COMFORT SYSTEMS USA INC - Quarter Report: 2015 June (Form 10-Q)

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UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

Form 10-Q


(Mark One)
ý		QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934
For the quarterly period ended June 30, 2015
OR
o		TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934
For the transition period from to

Commission file number: 1-13011

COMFORT SYSTEMS USA, INC.
(Exact name of registrant as specified in its charter)


DELAWARE (State or other jurisdiction of Incorporation or Organization)		76-0526487 (I.R.S. Employer Identification No.)

675 Bering Drive
Suite 400
Houston, Texas 77057
(Address of Principal Executive Offices) (Zip Code)

Registrant's telephone number, including area code: (713) 830-9600

Indicate by check mark whether the registrant (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90 days. Yes ý No o

Indicate by check mark whether the registrant has submitted electronically and posted on its corporate Web site, if any, every Interactive Data File required to be submitted and posted pursuant to Rule 405 of Regulation S-T (Section 232.405 of this chapter) during the preceding 12 months (or for such shorter period that the registrant was required to submit and post such files). Yes ý No o

Indicate by check mark whether the Registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, or a smaller reporting company (as defined in Rule 12b-2 of the Exchange Act).


Large accelerated filer o		Accelerated filer ý		Non-accelerated filer o (Do not check if a smaller reporting company)		Smaller reporting company o

Indicate by check mark whether the registrant is a shell company (as defined in Exchange Act Rule 12b-2). Yes o No ý

The number of shares outstanding of the issuer's common stock as of July 23, 2015 was 37,549,699 (excluding treasury shares of 3,573,666).

Table of Contents

COMFORT SYSTEMS USA, INC.
INDEX TO FORM 10-Q
FOR THE QUARTER ENDED JUNE 30, 2015

		Page

Part I—Financial Information
Item 1—Financial Statements
Consolidated Balance Sheets			1
Consolidated Statements of Operations			2
Consolidated Statements of Stockholders' Equity			3
Consolidated Statements of Cash Flows			4
Condensed Notes to Consolidated Financial Statements			5
Item 2—Management's Discussion and Analysis of Financial Condition and Results of Operations			14
Item 3—Quantitative and Qualitative Disclosures about Market Risk			27
Item 4—Controls and Procedures			27
Part II—Other Information
Item 1—Legal Proceedings			29
Item 1A—Risk Factors			29
Item 2—Unregistered Sales of Equity Securities and Use of Proceeds			29
Item 6—Exhibits			31
Signatures			32

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COMFORT SYSTEMS USA, INC.

CONSOLIDATED BALANCE SHEETS

(In Thousands, Except Share Amounts)

	June 30, 2015			December 31, 2014

	(Unaudited)
ASSETS
CURRENT ASSETS:
Cash and cash equivalents	$	40,714		$	32,064
Accounts receivable, less allowance for doubtful accounts of $4,641 and $4,379, respectively		329,338			303,575
Other receivables		6,191			15,520
Inventories		10,204			8,646
Prepaid expenses and other		26,631			25,591
Costs and estimated earnings in excess of billings		33,568			27,620
Assets related to discontinued operations		176			176

Total current assets		446,822			413,192
PROPERTY AND EQUIPMENT, NET		57,613			55,759
GOODWILL		143,569			140,341
IDENTIFIABLE INTANGIBLE ASSETS, NET		44,123			45,666
OTHER NONCURRENT ASSETS		10,922			10,792

Total assets	$	703,049		$	665,750



LIABILITIES AND STOCKHOLDERS' EQUITY
CURRENT LIABILITIES:
Current maturities of long-term capital lease obligations	$	287		$	317
Accounts payable		117,780			106,211
Accrued compensation and benefits		50,739			44,683
Billings in excess of costs and estimated earnings		90,322			77,446
Accrued self-insurance expense		29,738			28,903
Other current liabilities		35,332			24,814
Liabilities related to discontinued operations		263			263

Total current liabilities		324,461			282,637
LONG-TERM DEBT		19,000			39,500
LONG-TERM CAPITAL LEASE OBLIGATIONS		396			529
DEFERRED INCOME TAX LIABILITIES		9,841			10,817
OTHER LONG-TERM LIABILITIES		7,838			10,874

Total liabilities		361,536			344,357
COMMITMENTS AND CONTINGENCIES
STOCKHOLDERS' EQUITY:
Preferred stock, $.01 par, 5,000,000 shares authorized, none issued and outstanding		—			—
Common stock, $.01 par, 102,969,912 shares authorized, 41,123,365 and 41,123,365 shares issued, respectively		411			411
Treasury stock, at cost, 3,573,666 and 3,853,586 shares, respectively		(41,486	)		(43,598	)
Additional paid-in capital		322,015			320,084
Retained earnings		43,375			29,384

Comfort Systems USA, Inc. stockholders' equity		324,315			306,281
Noncontrolling interests		17,198			15,112

Total stockholders' equity		341,513			321,393

Total liabilities and stockholders' equity	$	703,049		$	665,750

The accompanying notes are an integral part of these consolidated financial statements.

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COMFORT SYSTEMS USA, INC.

CONSOLIDATED STATEMENTS OF OPERATIONS

(In Thousands, Except Per Share Data)

(Unaudited)

	Three Months Ended June 30,						Six Months Ended June 30,

	2015			2014			2015			2014
REVENUE	$	416,567		$	362,801		$	786,114		$	684,182
COST OF SERVICES		334,518			300,942			639,377			570,174

Gross profit		82,049			61,859			146,737			114,008
SELLING, GENERAL AND ADMINISTRATIVE EXPENSES		57,369			50,573			111,065			100,958
GOODWILL IMPAIRMENT		—			727			—			727
GAIN ON SALE OF ASSETS		(151	)		(89	)		(327	)		(222	)

Operating income		24,831			10,648			35,999			12,545
OTHER INCOME (EXPENSE):
Interest income		67			2			68			13
Interest expense		(454	)		(462	)		(959	)		(798	)
Changes in the fair value of contingent earn-out obligations		125			(130	)		125			—
Other		9			24			27			92

Other income (expense)		(253	)		(566	)		(739	)		(693	)

INCOME BEFORE INCOME TAXES		24,578			10,082			35,260			11,852
INCOME TAX EXPENSE		8,796			3,746			12,589			4,438

INCOME FROM CONTINUING OPERATIONS		15,782			6,336			22,671			7,414
Loss from discontinued operations, net of income tax benefit of $—, $—, $— and $10		—			—			—			(15	)

NET INCOME INCLUDING NONCONTROLLING INTERESTS		15,782			6,336			22,671			7,399
Less: Net income attributable to noncontrolling interests		2,378			1,935			4,201			2,623

NET INCOME ATTRIBUTABLE TO COMFORT SYSTEMS USA, INC.	$	13,404		$	4,401		$	18,470		$	4,776



INCOME PER SHARE ATTRIBUTABLE TO COMFORT SYSTEMS USA, INC.:
Basic—
Income from continuing operations	$	0.36		$	0.12		$	0.49		$	0.13
Loss from discontinued operations		—			—			—			—

Net income	$	0.36		$	0.12		$	0.49		$	0.13



Diluted—
Income from continuing operations	$	0.35		$	0.12		$	0.49		$	0.13
Loss from discontinued operations		—			—			—			—

Net income	$	0.35		$	0.12		$	0.49		$	0.13



SHARES USED IN COMPUTING INCOME PER SHARE:
Basic		37,457			37,706			37,370			37,644



Diluted		37,917			37,880			37,761			37,914



DIVIDENDS PER SHARE	$	0.060		$	0.055		$	0.120		$	0.110

The accompanying notes are an integral part of these consolidated financial statements.

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COMFORT SYSTEMS USA, INC.

CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY

(In Thousands, Except Share Amounts)

	Common Stock				Treasury Stock

	Common Stock				Treasury Stock						Additional Paid-In Capital			Retained Earnings			Non- Controlling Interests			Total Stockholders' Equity
	Shares		Amount		Shares			Amount			Additional Paid-In Capital			Retained Earnings			Non- Controlling Interests			Total Stockholders' Equity
BALANCE AT DECEMBER 31, 2013		41,123,365	$	411		(3,488,438	)	$	(37,468	)	$	318,123		$	14,768		$	18,188		$	314,022
Net income		—		—		—			—			—			23,063			5,536			28,599
Issuance of Stock:
Issuance of shares for options exercised including tax benefit		—		—		103,619			1,132			79			—			—			1,211
Issuance of restricted stock		—		—		115,044			1,243			(1,243	)		—			—			—
Shares received in lieu of tax withholding payment on vested restricted stock		—		—		(34,657	)		(531	)		—			—			—			(531	)
Tax benefit from vesting of restricted stock		—		—		—			—			133			—			—			133
Stock-based compensation		—		—		—			—			2,992			—			—			2,992
Dividends		—		—		—			—			—			(8,447	)		—			(8,447	)
Distribution to noncontrolling interests		—		—		—			—			—			—			(8,612	)		(8,612	)
Share repurchase		—		—		(549,154	)		(7,974	)		—			—			—			(7,974	)

BALANCE AT DECEMBER 31, 2014		41,123,365		411		(3,853,586	)		(43,598	)		320,084			29,384			15,112			321,393
Net income (unaudited)		—		—		—			—			—			18,470			4,201			22,671
Issuance of Stock:
Issuance of shares for options exercised including tax benefit (unaudited)		—		—		197,528			2,282			195			—			—			2,477
Issuance of restricted stock & performance stock (unaudited)		—		—		200,015			2,292			(626	)		—			—			1,666
Shares received in lieu of tax withholding payment on vested restricted stock (unaudited)		—		—		(44,590	)		(937	)		—			—			—			(937	)
Tax benefit from vesting of restricted stock (unaudited)		—		—		—			—			261			—			—			261
Stock-based compensation (unaudited)		—		—		—			—			2,101			—			—			2,101
Dividends (unaudited)		—		—		—			—			—			(4,479	)		—			(4,479	)
Distribution to noncontrolling interests (unaudited)		—		—		—			—			—			—			(2,115	)		(2,115	)
Share repurchase (unaudited)		—		—		(73,033	)		(1,525	)		—			—			—			(1,525	)

BALANCE AT JUNE 30, 2015 (unaudited)		41,123,365	$	411		(3,573,666	)	$	(41,486	)	$	322,015		$	43,375		$	17,198		$	341,513

The accompanying notes are an integral part of these consolidated financial statements.

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COMFORT SYSTEMS USA, INC.

CONSOLIDATED STATEMENTS OF CASH FLOWS

(In Thousands)

(Unaudited)

	Three Months Ended June 30,						Six Months Ended June 30,

	2015			2014			2015			2014
CASH FLOWS FROM OPERATING ACTIVITIES
Net income including noncontrolling interests	$	15,782		$	6,336		$	22,671		$	7,399
Adjustments to reconcile net income to net cash provided by (used in) operating activities—
Amortization of identifiable intangible assets		1,893			1,781			3,724			3,385
Depreciation expense		3,948			3,219			7,740			6,269
Goodwill impairment		—			727			—			727
Bad debt expense		683			202			894			235
Deferred tax expense (benefit)		(1,022	)		(1	)		(2,263	)		(1,623	)
Amortization of debt financing costs		65			65			158			130
Gain on sale of assets		(151	)		(89	)		(327	)		(222	)
Changes in the fair value of contingent earn-out obligations		(125	)		130			(125	)		—
Stock-based compensation expense		1,790			1,439			3,178			2,870
Changes in operating assets and liabilities, net of effects of acquisitions—
(Increase) decrease in—
Receivables, net		(20,845	)		(7,805	)		(17,991	)		(475	)
Inventories		(177	)		135			(1,440	)		(258	)
Prepaid expenses and other current assets		1,071			827			1,806			1,651
Costs and estimated earnings in excess of billings		(2,268	)		(3,816	)		(5,860	)		(8,259	)
Other noncurrent assets		(493	)		(84	)		(215	)		98
Increase (decrease) in—
Accounts payable and accrued liabilities		22,237			9,167			25,958			(2,002	)
Billings in excess of costs and estimated earnings		8,016			10,054			12,833			3,873
Other long-term liabilities		(159	)		98			(81	)		(197	)

Net cash provided by operating activities		30,245			22,385			50,660			13,601

CASH FLOWS FROM INVESTING ACTIVITIES:
Purchases of property and equipment		(5,685	)		(4,452	)		(9,308	)		(8,334	)
Proceeds from sales of property and equipment		279			323			485			540
Cash paid for acquisitions, net of cash acquired		(511	)		(47,359	)		(5,861	)		(51,359	)

Net cash used in investing activities		(5,917	)		(51,488	)		(14,684	)		(59,153	)

CASH FLOWS FROM FINANCING ACTIVITIES:
Proceeds from revolving line of credit		—			83,500			14,500			101,500
Payments on revolving line of credit		(18,000	)		(38,500	)		(35,000	)		(49,500	)
Payments on other long-term debt		—			(2,000	)		—			(2,000	)
Payments on capital lease obligations		(79	)		—			(163	)		—
Payments of dividends to shareholders		(2,242	)		(2,072	)		(4,479	)		(4,139	)
Share repurchase program		(1,525	)		(89	)		(1,525	)		(505	)
Shares received in lieu of tax withholding		(937	)		(531	)		(937	)		(531	)
Excess tax benefit of stock-based compensation		371			119			461			105
Proceeds from exercise of options		1,980			284			2,277			826
Distributions to noncontrolling interests		(2,074	)		(2,499	)		(2,115	)		(2,499	)
Payments for contingent consideration arrangements		—			—			(345	)		—

Net cash provided by (used in) financing activities		(22,506	)		38,212			(27,326	)		43,257

NET INCREASE (DECREASE) IN CASH AND CASH EQUIVALENTS		1,822			9,109			8,650			(2,295	)

CASH AND CASH EQUIVALENTS, beginning of period		38,892			40,650			32,064			52,054

CASH AND CASH EQUIVALENTS, end of period	$	40,714		$	49,759		$	40,714		$	49,759

The accompanying notes are an integral part of these consolidated financial statements.

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COMFORT SYSTEMS USA, INC.

CONDENSED NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

June 30, 2015

(Unaudited)

1. Business and Organization

Comfort Systems USA, Inc., a Delaware corporation, provides comprehensive heating, ventilation and air conditioning ("HVAC") installation, maintenance, repair and replacement services within the mechanical services industry. We operate primarily in the commercial, industrial and institutional HVAC markets and perform most of our services within office buildings, retail centers, apartment complexes, manufacturing plants and healthcare, education and government facilities. In addition to standard HVAC services, we provide specialized applications such as building automation control systems, fire protection, process cooling, electronic monitoring and process piping. Certain locations also perform related activities such as electrical service and plumbing. Approximately 48% of our consolidated 2015 revenue was attributable to installation of systems in newly constructed facilities, with the remaining 52% attributable to maintenance, repair and replacement services. The following service activities account for our consolidated 2015 revenue: HVAC 77%, plumbing 15%, building automation control systems 5% and other 3%. These service activities are within the mechanical services industry, which is the single industry segment we serve.

2. Summary of Significant Accounting Policies

Basis of Presentation

These interim statements should be read in conjunction with the historical Consolidated Financial Statements and related notes of Comfort Systems included in the Annual Report on Form 10-K as filed with the Securities and Exchange Commission ("SEC") for the year ended December 31, 2014 (the "Form 10-K").

The accompanying unaudited consolidated financial statements were prepared using generally accepted accounting principles for interim financial information and the instructions to Form 10-Q and applicable rules of Regulation S-X of the SEC. Accordingly, these financial statements do not include all the footnotes required by generally accepted accounting principles for complete financial statements and should be read in conjunction with the Form 10-K. We believe all adjustments necessary for a fair presentation of these interim statements have been included and are of a normal and recurring nature. Certain amounts in prior periods may have been reclassified to conform to the current year presentation. The effects of the reclassifications were not material to the unaudited consolidated financial statements. The results of operations for interim periods are not necessarily indicative of the results for the full fiscal year.

Use of Estimates

The preparation of financial statements in conformity with generally accepted accounting principles requires the use of estimates and assumptions by management in determining the reported amounts of assets and liabilities, revenue and expenses and disclosures regarding contingent assets and liabilities. Actual results could differ from those estimates. The most significant estimates used in our financial statements affect revenue and cost recognition for construction contracts, the allowance for doubtful accounts, self-insurance accruals, deferred tax assets, warranty accruals, fair value accounting for acquisitions and the quantification of fair value for reporting units in connection with our goodwill impairment testing.

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COMFORT SYSTEMS USA, INC.

CONDENSED NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued)

June 30, 2015

(Unaudited)

2. Summary of Significant Accounting Policies (Continued)

Recent Accounting Pronouncements

In May 2014, the FASB issued ASU No. 2014-09, "Revenue from Contracts with Customers (Topic 606)." ASU 2014-09 provides a framework that replaces the existing revenue recognition guidance. The guidance can be applied on a full retrospective or modified retrospective basis whereby the entity records a cumulative effect of initially applying this update at the date of initial application. It is effective for annual periods beginning after December 15, 2017, including interim periods within that reporting period. We are currently evaluating the potential impact of this authoritative guidance on our consolidated financial statements.

In April 2015, the FASB issued ASU No. 2015-03, "Simplifying the Presentation of Debt Issue Costs." Under ASU 2015-03, an entity presents debt issue costs related to a note in the balance sheet as a direct deduction from the related debt liability rather than as an asset. Entities would apply the new guidance retrospectively to all prior periods. ASU No. 2015-03 does not address the presentation of issuance costs associated with revolving debt agreements. It is effective for annual periods beginning after December 15, 2015, including interim periods within that reporting period. Currently, this authoritative guidance is not expected to have a material impact on our consolidated financial statements.

In July 2015, the FASB issued ASU No. 2015-11, "Simplifying the Measurement of Inventory", which requires that inventory within the scope of the guidance be measured at the lower of cost and net realizable value. Net realizable value is the estimated selling prices in the ordinary course of business, less reasonable predictable costs of completion, disposal and transportation. Inventory measured using last-in, first-out (LIFO) and the retail inventory method (RIM) are not impacted by the new guidance. Entities should apply the new guidance prospectively with earlier application permitted as of the beginning of an interim or annual reporting period. It is effective for fiscal years beginning after December 15, 2016, including interim periods within those fiscal years. We are currently evaluating the potential impact of this authoritative guidance on our consolidated financial statements.

Financial Instruments

Our financial instruments consist of cash and cash equivalents, accounts receivable, other receivables, accounts payable, life insurance policies, notes to former owners, capital leases and a revolving credit facility. We believe that the carrying values of these instruments on the accompanying balance sheets approximate their fair values.

Segment Disclosure

Our activities are within the mechanical services industry, which is the single industry segment we serve. Each operating subsidiary represents an operating segment and these segments have been aggregated, as the operating units meet all of the aggregation criteria.

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COMFORT SYSTEMS USA, INC.

CONDENSED NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued)

June 30, 2015

(Unaudited)

3. Fair Value Measurements

We classify and disclose assets and liabilities carried at fair value in one of the following three categories:

•: Level 1—quoted prices in active markets for identical assets and liabilities;
•: Level 2—observable market based inputs or unobservable inputs that are corroborated by market data; and
•: Level 3—significant unobservable inputs in which little or no market data exists, therefore requiring an entity to develop its own assumptions.

The following table summarizes the fair values and levels within the fair value hierarchy in which the fair value measurements fall for assets and liabilities measured on a recurring basis as of June 30, 2015 (in thousands):

			Fair Value Measurements at Reporting Date Using

	Total		Quoted Prices In Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)
Cash and cash equivalents	$	40,714	$	40,714	$	—	$	—
Life insurance—cash surrender value	$	3,397	$	—	$	3,397	$	—
Contingent earn-out obligations	$	300	$	—	$	—	$	300

Cash and cash equivalents consist primarily of highly rated money market funds at a variety of well-known institutions with original maturities of three months or less. The original cost of these assets approximates fair value due to their short term maturity.

One of our operations has life insurance policies covering 46 employees with a combined face value of $42.6 million. The policy is invested in mutual funds and the fair value measurement of the cash surrender balance associated with these policies is determined using Level 2 inputs within the fair value hierarchy and will vary with investment performance. The cash surrender value of these policies was $3.4 million as of June 30, 2015. These assets are included in "Other Noncurrent Assets" in our consolidated balance sheets.

We value contingent earn-out obligations using a probability weighted discounted cash flow method. This fair value measurement is based on significant unobservable inputs in the market and thus represents a Level 3 measurement within the fair value hierarchy. This analysis reflects the contractual terms of the purchase agreements (e.g., minimum and maximum payments, length of earn-out periods, manner of calculating any amounts due, etc.) and utilizes assumptions with regard to future cash flows, probabilities of achieving such future cash flows and a discount rate. The contingent earn-out obligations are measured at fair value each reporting period and changes in estimates of fair value are recognized in earnings.

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COMFORT SYSTEMS USA, INC.

CONDENSED NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued)

June 30, 2015

(Unaudited)

3. Fair Value Measurements (Continued)

The table below presents a reconciliation of the fair value of our contingent earn-out obligations that use significant unobservable inputs (Level 3) (in thousands):


Balance at beginning of year	$	670
Issuances		100
Settlements		(345	)
Adjustments to fair value		(125	)

Balance at end of period	$	300

We measure certain assets at fair value on a nonrecurring basis. These assets are recognized at fair value when they are deemed to be other-than-temporarily impaired. During the quarter ended June 30, 2014, we recorded a goodwill impairment charge of $0.7 million based on Level 3 measurements. We did not recognize any impairments, in the current year, on those assets required to be measured at fair value on a nonrecurring basis.

4. Acquisitions

Acquisition of DynaTen

On May 1, 2014, we closed a transaction to acquire DynaTen Corporation ("DynaTen") which reports as a separate operating location in Northern Texas. DynaTen is a regional mechanical contractor based in Fort Worth, Texas which engages in a broad range of mechanical contracting projects, HVAC services and controls, in the Dallas/Fort Worth metroplex and in surrounding areas. The total purchase price, which was finalized in the first quarter of 2015 was $40.5 million, of which $19.8 million was allocated to goodwill.

Other Acquisitions

We completed two acquisitions in the first quarter of 2015. In addition to the DynaTen acquisition noted above, additional acquisitions were completed in the first and second quarter of 2014. These acquisitions were not material and were "tucked-in" with existing operations. The total purchase price for the "tucked-in" acquisitions, including earn-outs, was $6.7 million and $9.5 million for the six months ended June 30, 2015 and 2014, respectively. Our consolidated balance sheet includes preliminary allocations of the purchase price, related to the two acquisitions completed in the fiscal year 2015, to the assets acquired and liabilities assumed based on estimates of fair value, pending completion of final valuation and purchase price adjustments. The results of operations of acquisitions are included in our consolidated financial statements from their respective acquisition dates. Additional contingent purchase price ("earn-out") has been or will be paid if certain acquisitions achieve predetermined profitability targets.

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COMFORT SYSTEMS USA, INC.

CONDENSED NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued)

June 30, 2015

(Unaudited)

5. Goodwill

The changes in the carrying amount of goodwill are as follows (in thousands):

	June 30, 2015		December 31, 2014

Balance at beginning of year	$	140,341	$	114,588
Additions		3,228		26,480
Impairment adjustment		—		(727	)

Balance at end of period	$	143,569	$	140,341

6. Long-Term Debt Obligations

Long-term debt obligations consist of the following (in thousands):

	June 30, 2015			December 31, 2014

Revolving credit facility	$	18,000		$	38,500
Notes to former owners		1,000			1,000
Capital lease obligations		683			846

Total debt		19,683			40,346
Less—current portion		(287	)		(317	)

Total long-term portion of debt	$	19,396		$	40,029

Revolving Credit Facility

We have a $250.0 million senior credit facility (the "Facility") provided by a syndicate of banks which is available for borrowings and letters of credit. The Facility expires in October 2019 and is secured by a first lien on substantially all of our personal property, except for assets related to projects subject to surety bonds and assets held by certain unrestricted subsidiaries, and a second lien on our assets related to projects subject to surety bonds. As of June 30, 2015, we had $18.0 million of outstanding borrowings, $48.0 million in letters of credit outstanding and $184.0 million of credit available.

There are two interest rate options for borrowings under the Facility, the Base Rate Loan Option and the Eurodollar Rate Loan Option. These rates are floating rates determined by the broad financial markets, meaning they can and do move up and down from time to time. Additional margins are then added to these two rates.

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COMFORT SYSTEMS USA, INC.

CONDENSED NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued)

June 30, 2015

(Unaudited)

6. Long-Term Debt Obligations (Continued)

The following is a summary of the additional margins:

	Consolidated Total Indebtedness to Credit Facility Adjusted EBITDA

	Less than 0.75			0.75 to 1.50			1.50 to 2.25			2.25 or greater
Additional Per Annum Interest Margin Added Under:
Base Rate Loan Option		0.25	%		0.50	%		0.75	%		1.00	%
Eurodollar Rate Loan Option		1.25	%		1.50	%		1.75	%		2.00	%

The weighted average interest rate applicable to the borrowings under the Facility was approximately 1.4% as of June 30, 2015.

Certain of our vendors require letters of credit to ensure reimbursement for amounts they are disbursing on our behalf, such as to beneficiaries under our self-funded insurance programs. We have also occasionally used letters of credit to guarantee performance under our contracts and to ensure payment to our subcontractors and vendors under those contracts. Our lenders issue such letters of credit through the Facility for a fee. We have never had a claim made against a letter of credit that resulted in payments by a lender or by us and believe such claim is unlikely in the foreseeable future. The letter of credit fees range from 1.25% to 2.00% per annum, based on the ratio of Consolidated Total Indebtedness to Credit Facility Adjusted EBITDA, as defined in the credit agreement.

Commitment fees are payable on the portion of the revolving loan capacity not in use for borrowings or letters of credit at any given time. These fees range from 0.20% to 0.35% per annum, based on the ratio of Consolidated Total Indebtedness to Credit Facility Adjusted EBITDA, as defined in the credit agreement.

The Facility contains financial covenants defining various financial measures and the levels of these measures with which we must comply. Covenant compliance is assessed as of each quarter end.

The Facility's principal financial covenants include:

Leverage Ratio—The Facility requires that the ratio of our Consolidated Total Indebtedness to our Credit Facility Adjusted EBITDA not exceed 2.75 through maturity. The leverage ratio as of June 30, 2015 was 0.23.

Fixed Charge Coverage Ratio—The Facility requires that the ratio of Credit Facility Adjusted EBITDA, less non-financed capital expenditures, tax provision, dividends and amounts used to repurchase stock to the sum of interest expense and scheduled principal payments of indebtedness be at least 2.00; provided that the calculation of the fixed charge coverage ratio excludes stock repurchases and the payment of dividends at any time that the Company's Net Leverage Ratio does not exceed 1.50. The Facility also allows the fixed charge coverage ratio not to be reduced for stock repurchases through September 30, 2015 in an aggregate amount not to exceed $25 million if at the time of and after giving effect to such repurchase the Company's Net Leverage Ratio was less than or equal to 1.50. Capital expenditures, tax provision, dividends and stock repurchase payments are defined under the Facility for purposes of this covenant to be amounts for the four quarters ending as of any given

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COMFORT SYSTEMS USA, INC.

CONDENSED NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued)

June 30, 2015

(Unaudited)

6. Long-Term Debt Obligations (Continued)

quarterly covenant compliance measurement date. The fixed charge coverage ratio as of June 30, 2015 was 24.05.

Other Restrictions—The Facility permits acquisitions of up to $25.0 million per transaction, provided that the aggregate purchase price of such an acquisition and of acquisitions in the same fiscal year does not exceed $60.0 million. However, these limitations only apply when the Company's Net Leverage Ratio is equal to or greater than 2.00.

While the Facility's financial covenants do not specifically govern capacity under the Facility, if our debt level under the Facility at a quarter-end covenant compliance measurement date were to cause us to violate the Facility's leverage ratio covenant, our borrowing capacity under the Facility and the favorable terms that we currently have could be negatively impacted by the lenders.

We were in compliance with all of our financial covenants as of June 30, 2015.

Notes to Former Owners

We issued a subordinated note to the former owners of an acquired company as part of the consideration used to acquire the company. This note had an outstanding balance of $1.0 million as of June 30, 2015 and bears interest, payable quarterly, at a weighted average interest rate of 2.5%. The principle is due in equal installments on October 2016 and 2017.

Other Debt

In conjunction with our acquisition of our northern Texas operation, we acquired capital lease obligations of $0.7 million. Currently, $0.7 million of capital lease obligations are outstanding, of which $0.3 million is considered current.

Our majority owned subsidiary, Environmental Air Systems, LLC, has a revolving $2.5 million credit line that is available for temporary working capital needs and expires May 31, 2016. As of June 30, 2015, we had no outstanding borrowings and, therefore, $2.5 million of credit available. We estimate that the weighted average interest rate applicable to borrowings under this variable rate credit line would be approximately 2.0% as of June 30, 2015.

7. Commitments and Contingencies

Claims and Lawsuits

We are subject to certain legal and regulatory claims, including lawsuits arising in the normal course of business. We maintain various insurance coverages to minimize financial risk associated with these claims. We have estimated and provided accruals for probable losses and related legal fees associated with certain litigation in the accompanying consolidated financial statements. While we cannot predict the outcome of these proceedings, in management's opinion and based on reports of counsel, any liability arising from these matters individually and in the aggregate will not have a material effect on our operating results, cash flows or financial condition, after giving effect to provisions already recorded.

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COMFORT SYSTEMS USA, INC.

CONDENSED NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued)

June 30, 2015

(Unaudited)

7. Commitments and Contingencies (Continued)

Surety

Many customers, particularly in connection with new construction, require us to post performance and payment bonds issued by a financial institution known as a surety. If we fail to perform under the terms of a contract or to pay subcontractors and vendors who provided goods or services under a contract, the customer may demand that the surety make payments or provide services under the bond. We must reimburse the surety for any expenses or outlays it incurs. To date, we are not aware of any losses to our sureties in connection with bonds the sureties have posted on our behalf, and do not expect such losses to be incurred in the foreseeable future.

Surety market conditions have seen some strengthening as the commercial construction markets have started to rebound. Bonding capacity remains adequate in the current market conditions along with acceptable terms and conditions. Historically, approximately 25% to 35% of our business has required bonds. While we currently have strong surety relationships to support our bonding needs, future market conditions or changes in the sureties' assessment of our operating and financial risk could cause the sureties to decline to issue bonds for our work. If that were to occur, the alternatives include doing more business that does not require bonds, posting other forms of collateral for project performance such as letters of credit or cash, and seeking bonding capacity from other sureties. We would likely also encounter concerns from customers, suppliers and other market participants as to our creditworthiness. While we believe our general operating and financial characteristics would enable us to ultimately respond effectively to an interruption in the availability of bonding capacity, such an interruption would likely cause our revenue and profits to decline in the near term.

Self-Insurance

We are substantially self-insured for workers' compensation, employer's liability, auto liability, general liability and employee group health claims, in view of the relatively high per-incident deductibles we absorb under our insurance arrangements for these risks. Losses up to deductible amounts are estimated and accrued based upon known facts, historical trends and industry averages. Loss estimates associated with the larger and longer-developing risks, such as workers' compensation, auto liability and general liability, are reviewed by a third-party actuary quarterly.

8. Stockholders' Equity

Earnings Per Share

Basic earnings per share ("EPS") is computed by dividing net income by the weighted average number of shares of common stock outstanding during the period. Diluted EPS is computed considering the dilutive effect of stock options, contingently issuable restricted stock and restricted stock units.

There were no anti-dilutive stock options for the three and six months ended June 30, 2015, respectively. There were no anti-dilutive stock options for the six months ended June 30, 2014. There were approximately 0.2 million anti-dilutive stock options excluded from the calculation of diluted EPS for the three months ended June 30, 2014.

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COMFORT SYSTEMS USA, INC.

CONDENSED NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued)

June 30, 2015

(Unaudited)

8. Stockholders' Equity (Continued)

The following table reconciles the number of shares outstanding with the number of shares used in computing basic and diluted earnings per share for each of the periods presented (in thousands):

	Three Months Ended June 30,						Six Months Ended June 30,

	2015			2014			2015			2014
Common shares outstanding, end of period		37,550			37,748			37,550			37,748
Effect of using weighted average common shares outstanding		(93	)		(42	)		(180	)		(104	)

Shares used in computing earnings per share—basic		37,457			37,706			37,370			37,644
Effect of shares issuable under stock option plans based on the treasury stock method		289			144			260			165
Effect of restricted shares		171			30			131			105

Shares used in computing earnings per share—diluted		37,917			37,880			37,761			37,914

Share Repurchase Program

On March 29, 2007, our Board of Directors (the "Board") approved a stock repurchase program to acquire up to 1.0 million shares of our outstanding common stock. Subsequently, the Board has from time to time approved extensions of the program to acquire additional shares. Since the inception of the repurchase program, the Board has approved 7.6 million shares to be repurchased.

The share repurchases will be made from time to time at our discretion in the open market or privately negotiated transactions as permitted by securities laws and other legal requirements, and subject to market conditions and other factors. The Board may modify, suspend, extend or terminate the program at any time. During the six months ended June 30, 2015, we repurchased 0.1 million shares for approximately $1.5 million at an average price of $20.88 per share. Since the inception of the program in 2007 through June 30, 2015, we have repurchased a cumulative total of 6.6 million shares at an average price of $11.40 per share.

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Item 2. Management's Discussion and Analysis of Financial Condition and Results of Operations

The following discussion and analysis should be read in conjunction with our historical Consolidated Financial Statements and related notes included elsewhere in this Form 10-Q and the Annual Report on Form 10-K filed with the Securities and Exchange Commission for the year ended December 31, 2014 (the "Form 10-K"). This discussion contains "forward-looking statements" regarding our business and industry within the meaning of the Private Securities Litigation Reform Act of 1995. These statements are based on our current plans and expectations and involve risks and uncertainties that could cause our actual future activities and results of operations to be materially different from those set forth in the forward-looking statements. Important factors that could cause actual results to differ include risks set forth in "Item 1A. Risk Factors" included in our Form 10-K. We undertake no obligation to revise or publicly release the results of any revision to these forward-looking statements, except as required by law. Given these risks and uncertainties, readers are cautioned not to place undue reliance on such forward-looking statements. The terms "Comfort Systems," "we," "us," or "the Company," refer to Comfort Systems USA, Inc. or Comfort Systems USA, Inc. and its consolidated subsidiaries, as appropriate in the context.

Introduction and Overview

We are a national provider of comprehensive HVAC installation, maintenance, repair and replacement services within the mechanical services industry. We operate primarily in the commercial, industrial and institutional HVAC markets and perform most of our services within office buildings, retail centers, apartment complexes, manufacturing plants, and healthcare, education and government facilities. In addition to standard HVAC services, we provide specialized applications such as building automation control systems, fire protection, process cooling, electronic monitoring and process piping. Certain locations also perform related activities such as electrical service and plumbing.

Nature and Economics of Our Business

Approximately 83% of our revenue is earned on a project basis for installation of HVAC systems in newly constructed facilities or for replacement of HVAC systems in existing facilities. Customers hire us to ensure such systems deliver specified or generally expected heating, cooling, conditioning and circulation of air in a facility. This entails installing core system equipment such as packaged heating and air conditioning units, or in the case of larger facilities, separate core components such as chillers, boilers, air handlers, and cooling towers. We also typically install connecting and distribution elements such as piping and ducting. Our responsibilities usually require conforming the systems to pre-established engineering drawings and equipment and performance specifications, which we frequently participate in establishing. Our project management responsibilities include staging equipment and materials to project sites, deploying labor to perform the work, and coordinating with other service providers on the project, including any subcontractors we might use to deliver our portion of the work.

When competing for project business, we usually estimate the costs we will incur on a project, and then propose a bid to the customer that includes a contract price and other performance and payment terms. Our bid price and terms are intended to cover our estimated costs on the project and provide a profit margin to us commensurate with the value of the installed system to the customer, the risk that project costs or duration will vary from estimate, the schedule on which we will be paid, the opportunities for other work that we might forego by committing capacity to this project, and other costs that we incur more broadly to support our operations but which are not specific to the project. Typically customers will seek bids from competitors for a given project. While the criteria on which customers select the winning bid vary widely and include factors such as quality, technical expertise, on-time performance, post-project support and service, and company history and financial strength, we

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believe that price is the most influential factor for most customers in choosing an HVAC installation and service provider.

After a customer accepts our bid, we generally enter into a contract with the customer that specifies what we will deliver on the project, what our related responsibilities are, and how much and when we will be paid. Our overall price for the project is typically set at a fixed amount in the contract, although changes in project specifications or work conditions that result in unexpected additional work are usually subject to additional payment from the customer via what are commonly known as change orders. Project contracts typically provide for periodic billings to the customer as we meet progress milestones or incur cost on the project. Project contracts in our industry also frequently allow for a small portion of progress billings or contract price to be withheld by the customer until after we have completed the work, typically for six months. Amounts withheld under this practice are known as retention or retainage.

Labor and overhead costs account for the majority of our cost of service. Accordingly, labor management and utilization have the most impact on our project performance. Given the fixed price nature of much of our project work, if our initial estimate of project costs is wrong or we incur cost overruns that cannot be recovered in change orders, we can experience reduced profits or even significant losses on fixed price project work. We also perform some project work on a cost-plus or a time and materials basis, under which we are paid our costs incurred plus an agreed-upon profit margin although such projects are sometimes subject to a guaranteed maximum cost. These margins are frequently less than fixed-price contract margins because there is less risk of unrecoverable cost overruns in cost-plus or time and materials work.

Our average project takes six to nine months to complete, with an average contract price of approximately $496,000. We also perform larger HVAC projects. Generally, projects closer in size to $1 million will be completed in one year or less. It is unusual for us to work on a project that exceeds two years in length. Our projects generally require working capital funding of equipment and labor costs. Customer payments on periodic billings generally do not recover these costs until late in the job. Our average project duration together with typical retention terms as discussed above generally allow us to complete the realization of revenue and earnings in cash within one year. We have what we believe is a well-diversified distribution of revenue across end-use sectors that we believe reduces our exposure to negative developments in any given sector. Because of the integral nature of HVAC and related controls systems to most buildings, we have the legal right in almost all cases to attach liens to buildings or related funding sources when we have not been fully paid for installing systems, except with respect to some government buildings. The service work that we do, which is discussed further below, usually does not give rise to lien rights.

A stratification of projects in progress as of June 30, 2015, by contract price, is as follows:

Contract Price of Project		Aggregate Contract Price Value (millions)

Under $1 million	3,798	$	422.5
$1 million - $5 million	312		699.1
$5 million - $10 million	63		424.2
$10 million - $15 million	20		239.8
Greater than $15 million	15		303.4

Total	4,208	$	2,089.0

In addition to project work, approximately 17% of our revenue represents maintenance and repair service on already installed HVAC and controls systems. This kind of work usually takes from a few

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hours to a few days to perform. Prices to the customer are usually based on the equipment and materials used in the service as well as technician labor time. We usually bill the customer for service work when it is complete, typically with payment terms of up to thirty days. We also provide maintenance and repair service under ongoing contracts. Under these contracts, we are paid regular monthly or quarterly amounts and provide specified service based on customer requirements. These agreements typically cover periods ranging from one to three years with thirty- to sixty-day cancellation notice periods.

A relatively small portion of our revenue comes from national and regional account customers. These customers typically have multiple sites, and contract with us to perform maintenance and repair service. These contracts may also provide for us to perform new or replacement systems installation. We operate a national call center to dispatch technicians to sites requiring service. We perform the majority of this work with our own employees, with the balance being subcontracted to third parties that meet our performance qualifications. We will also typically use proprietary information systems to maintain information on the customer's sites and equipment, including performance and service records, and related cost data. These systems track the status of ongoing service and installation work, and may also monitor system performance data. Under these contractual relationships, we usually provide consolidated billing and credit payment terms to the customer.

Profile and Management of Our Operations

We manage our 36 operating units based on a variety of factors. Financial measures we emphasize include profitability, and use of capital as indicated by cash flow and by other measures of working capital principally involving project cost, billings and receivables. We also monitor selling, general, administrative and indirect project support expense, backlog, workforce size and mix, growth in revenue and profits, variation of actual project cost from original estimate, and overall financial performance in comparison to budget and updated forecasts. Operational factors we emphasize include project selection, estimating, pricing, management and execution practices, labor utilization, safety, training, and the make-up of both existing backlog as well as new business being pursued, in terms of project size, technical application and facility type, end-use customers and industries, and location of the work.

Most of our operations compete on a local or regional basis. Attracting and retaining effective operating unit managers is an important factor in our business, particularly in view of the relative uniqueness of each market and operation, the importance of relationships with customers and other market participants such as architects and consulting engineers, and the high degree of competition and low barriers to entry in most of our markets. Accordingly, we devote considerable attention to operating unit management quality, stability, and contingency planning, including related considerations of compensation, and non-competition protection where applicable.

Economic and Industry Factors

As an HVAC and building controls services provider, we operate in the broader nonresidential construction services industry and are affected by trends in this sector. While we do not have operations in all major cities of the United States, we believe our national presence is sufficiently large that we experience trends in demand for and pricing of our services that are consistent with trends in the national nonresidential construction sector. As a result, we monitor the views of major construction sector forecasters along with macroeconomic factors they believe drive the sector, including trends in gross domestic product, interest rates, business investment, employment, demographics, and the general fiscal condition of federal, state and local governments.

Spending decisions for building construction, renovation and system replacement are generally made on a project basis, usually with some degree of discretion as to when and if projects proceed. With larger amounts of capital, time, and discretion involved, spending decisions are affected to a

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significant degree by uncertainty, particularly concerns about economic and financial conditions and trends. We have experienced periods of time when economic weakness caused a significant slowdown in decisions to proceed with installation and replacement project work.

Operating Environment and Management Emphasis

Nonresidential building construction and renovation activity, as reported by the federal government, declined over the four year period from 2009 to 2012, and 2013 and 2014 activity levels have been relatively stable at the low levels of the preceding years. While we expect that activity levels and the underlying environment for nonresidential construction activity will remain below prior peaks, we have seen industry conditions gradually improve during the first half of 2015.

As a result of our continued strong emphasis on cash flow, we currently have modest indebtedness under our revolving credit facility and we have substantial uncommitted cash balances, as discussed further in "Liquidity and Capital Resources" below. We have a credit facility in place with considerably less restrictive terms than those of our previous facilities; this facility does not expire until October 2019. We have strong surety relationships to support our bonding needs, and we believe our relationships with the surety markets are strong and benefit from our solid current results and financial position. We have generated positive free cash flow in each of the last sixteen calendar years and will continue our emphasis in this area. We believe that the relative size and strength of our balance sheet and surety support as compared to most companies in our industry represent competitive advantages for us.

As discussed at greater length in "Results of Operations" below, we expect price competition to continue as our customers and local and regional competitors respond cautiously to changing conditions. We will continue our efforts expand and improve our service business, to find the more active sectors in our markets, and to increase our regional and national account business. Our primary emphasis for the remainder of 2015 will be on execution and cost control, but we are beginning to seek growth based on our belief that industry conditions are beginning to improve, and we believe that activity levels will permit us to earn reasonable profits while preserving our core workforce. We have increased our focus on project qualification, estimating, pricing and management; and overall we are investing in service growth and improved performance.

Cyclicality and Seasonality

Historically, the construction industry has been highly cyclical. As a result, our volume of business may generally be adversely affected by declines in new installation and replacement projects in various geographic regions of the United States during periods of economic weakness.

The HVAC industry is subject to seasonal variations. Specifically, the demand for new installation and replacement is generally lower during the winter months (the first quarter of the year) due to reduced construction activity during inclement weather and less use of air conditioning during the colder months. Demand for HVAC services is generally higher in the second and third calendar quarters due to increased construction activity and increased use of air conditioning during the warmer months. Accordingly, we expect our revenue and operating results generally will be lower in the first and fourth calendar quarters.

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Results of Operations (dollars in thousands):

	Three Months Ended June 30,												Six Months Ended June 30,

	2015			%			2014			%			2015			%			2014			%
Revenue	$	416,567			100.0	%	$	362,801			100.0	%	$	786,114			100.0	%	$	684,182			100.0	%
Cost of services		334,518			80.3	%		300,942			82.9	%		639,377			81.3	%		570,174			83.3	%

Gross profit		82,049			19.7	%		61,859			17.1	%		146,737			18.7	%		114,008			16.7	%
Selling, general and administrative expenses		57,369			13.8	%		50,573			13.9	%		111,065			14.1	%		100,958			14.8	%
Goodwill impairment		—			—			727			0.2	%		—			—			727			0.1	%
Gain on sale of assets		(151	)		—			(89	)		—			(327	)		—			(222	)		—

Operating income		24,831			6.0	%		10,648			2.9	%		35,999			4.6	%		12,545			1.8	%
Interest income		67			—			2			—			68			—			13			—
Interest expense		(454	)		(0.1	)%		(462	)		(0.1	)%		(959	)		(0.1	)%		(798	)		(0.1	)%
Changes in the fair value of contingent earn-out obligations		125			—			(130	)		—			125			—			—			—
Other income (expense)		9			—			24			—			27			—			92			—

Income before income taxes		24,578			5.9	%		10,082			2.8	%		35,260			4.5	%		11,852			1.7	%
Income tax expense		8,796						3,746						12,589						4,438

Income from continuing operations		15,782						6,336						22,671						7,414
Loss from discontinued operations, net of tax		—						—						—						(15	)

Net income including noncontrolling interests		15,782			3.8	%		6,336			1.7	%		22,671			2.9	%		7,399			1.1	%
Less: Net income attributable to noncontrolling interests		2,378			0.6	%		1,935			0.5	%		4,201			0.5	%		2,623			0.4	%

Net income attributable to Comfort Systems USA, Inc.	$	13,404					$	4,401					$	18,470					$	4,776

We had 37 operating locations as of December 31, 2014. We completed two acquisitions in the first quarter of 2015 and none in the second quarter of 2015. These acquisitions were not material and were "tucked-in" with existing operations. In addition, we merged two operating locations during the first quarter. As of June 30, 2015, we had 36 operating locations. Acquisitions are included in our results of operations from the respective acquisition date. The same-store comparison from 2015 to 2014, as described below, excludes four months of results for our Northern Texas operation, which was acquired in May 2014. An operating location is included in the same-store comparison on the first day it has comparable prior year operating data. An operating location is excluded from the same-store comparison in the current year and comparable prior years when it is properly characterized as a discontinued operation under applicable accounting standards.

Revenue—Revenue increased $53.8 million, or 14.8%, to $416.6 million for the second quarter of 2015 compared to the same period in 2014. The increase included a 13.5% increase in revenue related to same-store activity and a 1.3% increase related to the acquisition of our Northern Texas operation. The same-store revenue increase is primarily due to our Environmental Air Systems, LLC ("EAS") operation ($16.6 million), our large operation headquartered in Virginia ($9.5 million), our Arizona operation ($6.9 million) and our Arkansas operation ($4.9 million). These operations, as well as many of our other operating locations, experienced increased project work compared to the prior quarter in multiple markets, but primarily the industrials sector.

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Revenue increased $101.9 million, or 14.9%, to $786.1 million for the first six months of 2015 compared to the same period in 2014. The increase included a 12.0% increase in revenue related to same-store activity and a 2.9% increase related to the acquisition of our Northern Texas operation. The same-store revenue increase is primarily due to our EAS operation ($40.0 million), our large operation headquartered in Virginia ($16.7 million), our Arizona operation ($8.7 million) and our Arkansas operation ($16.0 million). These operations, as well as many of our other operating locations, experienced increased project work compared to the prior year in multiple markets, but primarily the industrials sector.

Backlog reflects revenue still to be recognized under contracted or committed installation and replacement project work. Project work generally lasts less than one year. Service agreement revenue and service work and short duration projects which are generally billed as performed do not flow through backlog. Accordingly, backlog represents only a portion of our revenue for any given future period, and it represents revenue that is likely to be reflected in our operating results over the next six to twelve months. As a result, we believe the predictive value of backlog information is limited to indications of general revenue direction over the near term, and should not be interpreted as indicative of ongoing revenue performance over several quarters.

Backlog as of June 30, 2015 was $712.3 million, a 0.8% decrease from March 31, 2015 backlog of $718.0 million, and a 5.7% increase from June 30, 2014 backlog of $673.7 million. Sequential backlog decreased at approximately half of our operating locations, primarily those in southeastern locations, due to the completion of project work during the quarter. This was almost fully offset by increases in backlog at the other half of our operating locations which experienced increased project bookings during the quarter. The year-over-year backlog increase was primarily due to increased project bookings at one of our Virginia operations ($17.3 million), our EAS operation ($16.1 million) and our Colorado operation ($14.7 million). This was partially offset by a decrease at our Wisconsin operation ($22.1 million) due to the completion of project work during the quarter.

We experienced significant industry activity declines in 2009 through 2012 with activity levels stabilizing in 2013 and 2014. Based on our backlog and forecasts from industry construction analysts, we expect that activity levels in our industry are likely to gradually improve over the next twelve months, particularly in the area of new construction.

Gross Profit—Gross profit increased $20.2 million, or 32.6%, to $82.0 million for the second quarter of 2015 as compared to the same period in 2014. The increase included a $0.8 million, or 1.3%, increase related to the acquisition of our Northern Texas operation and a $19.4 million, or 31.3%, increase on a same-store basis. The same-store increase in gross profit was due to overall increased margins at a majority of operating locations. Specifically, we saw improved project execution at our large operation headquartered in Virginia ($4.0 million) and continued improvement at our Southern California operation ($3.5 million) which had experienced job underperformance in 2014. As a percentage of revenue, gross profit increased from 17.1% in 2014 to 19.7% in 2015 primarily due to the factors discussed above.

Gross profit increased $32.7 million, or 28.7%, to $146.7 million for the first six months of 2015 as compared to the same period in 2014. The increase included a $3.4 million, or 3.0%, increase related to the acquisition of our Northern Texas operation and a $29.3 million, or 25.7%, increase on a same-store basis. The same-store increase in gross profit was primarily due to job underperformance at our Southern California operation in 2014 ($6.2 million) and improved project execution at our large operation headquartered in Virginia ($5.0 million). In addition, there was a $4.7 million increase in profitability in 2015 at our EAS operation due to improved project execution. As a percentage of revenue, gross profit increased from 16.7% in 2014 to 18.7% in 2015 primarily due to the factors discussed above.

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Selling, General and Administrative Expenses ("SG&A")—SG&A increased $6.8 million, or 13.4%, to $57.4 million for the second quarter of 2015 as compared to 2014. On a same-store basis, excluding amortization expense, SG&A increased $6.3 million, or 12.9%. This increase is primarily due to increased compensation accruals based on operating results ($3.4 million) and expanded service activities at certain locations ($1.5 million). Amortization expense remained relatively flat during the period. As a percentage of revenue, SG&A decreased from 13.9% in 2014 to 13.8% in 2015 primarily due to an increase in large-project revenues at EAS which did not require a corresponding increase in SG&A and better SG&A management at our large operation headquartered in Virginia.

SG&A increased $10.1 million, or 10.0%, to $111.1 million for the first six months of 2015 as compared to the same period in 2014. On a same-store basis, excluding amortization expense, SG&A increased $8.1 million, or 8.3%. This increase is primarily due to increased compensation accruals based on operating results ($5.4 million) and expanded service activities at certain locations ($3.0 million). Amortization expense increased $0.2 million, or 5.0%. As a percentage of revenue, SG&A decreased from 14.8% in 2014 to 14.1% in 2015 primarily due to the factors discussed above.

We have included same-store SG&A, excluding amortization, because we believe it is an effective measure of comparative results of operations. However, same-store SG&A, excluding amortization, is not considered under generally accepted accounting principles to be a primary measure of an entity's financial results, and accordingly, should not be considered an alternative to SG&A as shown in our consolidated statements of operations.

	Three Months Ended June 30,						Six Months Ended June 30,

	2015			2014			2015			2014
	(in thousands)
SG&A	$	57,369		$	50,573		$	111,065		$	100,958
Less: SG&A from companies acquired		(405	)		—			(1,843	)		—
Less: Amortization expense		(1,747	)		(1,664	)		(3,432	)		(3,268	)

Same-store SG&A, excluding amortization expense	$	55,217		$	48,909		$	105,790		$	97,690

Goodwill Impairment—No goodwill impairment has been recorded in 2015. We recorded a goodwill impairment charge of $0.7 million during the second quarter of 2014. Based on market activity declines and write-downs incurred on several jobs, we determined that the operating environment, conditions and performance at our operating location based in Southern California could no longer support the related goodwill balance.

Interest Expense—Interest expense remained relatively flat at $0.5 million for the second quarter of 2015 and 2014. Interest expense increased $0.2 million, or 20.2%, to $1.0 million for the first six months of 2015 as compared to the same period in 2014. This increase was due to the increase in borrowings on the revolving credit facility in the first quarter of 2015.

Changes in the Fair Value of Contingent Earn-out Obligations—The contingent earn-out obligations are measured at fair value each reporting period and changes in estimates of fair value are recognized in earnings. There was a gain of $0.1 million from changes in the fair value of contingent earn-out obligations for the second quarter of 2015 as compared to a loss of $0.1 million in the prior year. Based on updated measurements of estimated future cash flows for our contingent obligations in the second quarter of 2015, we decreased our obligation related to a prior year acquisition resulting in the current quarter gain.

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Income from changes in the fair value of contingent earn-out obligations for the first six months of 2015 was $0.1 million which was all due to second quarter activity. There was no net change in the fair value of contingent earn-out obligations for the first six months of 2014.

Income Tax Expense—We perform work throughout the United States in virtually all of the fifty states as well as in Puerto Rico. Our effective tax rate varies based upon our relative profitability, or lack of profitability, in states with varying state tax rates and rules. In addition, discrete events, judgments and legal structures can affect our effective tax rate. These items can include the tax treatment for impairment of goodwill and other intangible assets and changes in fair value of acquisition related assets and liabilities, tax reserves associated with regulatory audits, accounting for losses associated with underperforming operations and the partial ownership of consolidated entities.

For the six months ended June 30, 2015 our tax expense was $12.6 million with an effective tax rate of 35.7% as compared to tax expense of $4.4 million with an effective tax rate of 37.4% for the six months ended June 30, 2014. The effective rate for 2015 is higher than the federal statutory rate of 35.0% primarily due to state income taxes (3.7%) and non-deductible expenses (1.1%) partially offset by the impact of the noncontrolling interest of EAS which for tax purposes is treated as a partnership (3.0%) and the production activity deduction (1.8%). The effective rate for 2014 is higher than the federal statutory rate of 35.0% primarily due to state income taxes (4.0%) and non-deductible expenses (1.5%) which were partially offset by the impact of the noncontrolling interest of EAS which for tax purposes is treated as a partnership (2.4%) and the production activity deduction (2.1%). Tax reserves are analyzed and adjusted quarterly as events occur to warrant such changes. Adjustments to tax reserves are a component of the effective tax rate. We currently estimate our effective tax rate for 2015 will be between 35% and 40%.

Net Income Attributable to Noncontrolling Interests—Net income attributable to noncontrolling interests increased $0.4 million to $2.4 million for the second quarter of 2015 as compared to the same quarter in 2014. This increase reflects the impact of higher earnings at EAS, our non-wholly owned consolidated subsidiary, which was due primarily to increased revenues and margins on jobs performed in the current quarter.

Net income attributable to noncontrolling interests increased $1.6 million to $4.2 million for the first six months of 2015 as compared to the same period in 2014. The increase was primarily due to higher earnings at EAS in the current year caused by increased margins on jobs performed in 2015.

Outlook

While we expect that activity levels and the underlying environment for nonresidential construction activity will remain below prior peaks, we have seen industry conditions gradually improve during the first half of 2015. Our emphasis for the remainder of 2015 will be on execution, including a focus on cost discipline and efficient project performance, labor force development, and investing in growth, particularly in service and small projects. Based on our backlog, and in light of economic conditions for our industry, we expect that revenue will be above the levels that we have experienced in recent years, and that 2015 profitability is likely to improve as compared to 2014.

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Liquidity and Capital Resources (in thousands):

	Three Months Ended June 30,						Six Months Ended June 30,

	2015			2014			2015			2014
Cash provided by (used in):
Operating activities	$	30,245		$	22,385		$	50,660		$	13,601
Investing activities		(5,917	)		(51,488	)		(14,684	)		(59,153	)
Financing activities		(22,506	)		38,212			(27,326	)		43,257

Net increase (decrease) in cash and cash equivalents	$	1,822		$	9,109		$	8,650		$	(2,295	)



Free cash flow:
Cash provided by operating activities	$	30,245		$	22,385		$	50,660		$	13,601
Purchases of property and equipment		(5,685	)		(4,452	)		(9,308	)		(8,334	)
Proceeds from sales of property and equipment		279			323			485			540

Free cash flow	$	24,839		$	18,256		$	41,837		$	5,807

Cash Flow

Our business does not require significant amounts of investment in long-term fixed assets. The substantial majority of the capital used in our business is working capital that funds our costs of labor and installed equipment deployed in project work until our customer pays us. Customary terms in our industry allow customers to withhold a small portion of the contract price until after we have completed the work, typically for six months. Amounts withheld under this practice are known as retention or retainage. Our average project duration together with typical retention terms generally allow us to complete the realization of revenue and earnings in cash within one year.

Cash Provided by Operating Activities—Cash flow from operations is primarily influenced by demand for our services and operating margins, but can also be influenced by working capital needs associated with the various types of services that we provide. In particular, working capital needs may increase when we commence large volumes of work under circumstances where project costs, primarily associated with labor, equipment and subcontractors, are required to be paid before the receivables resulting from the work performed are billed and collected. Working capital needs are generally higher during the late winter and spring months as we prepare and plan for the increased project demand when favorable weather conditions exist in the summer and fall months. Conversely, working capital assets are typically converted to cash during the late summer and fall months as project completion is underway. These seasonal trends are sometimes offset by changes in the timing of major projects which can be impacted by the weather, project delays or accelerations and other economic factors that may affect customer spending.

Cash provided by operating activities was $30.2 million during the second quarter of 2015 compared with $22.4 million during the second quarter of 2014. The increase was primarily due to higher net income in the second quarter of 2015 ($15.8 million) compared to the second quarter of 2014 ($6.3 million) and an increase in accounts payable and accrued liabilities of $13.1 million compared to the prior year, primarily caused by timing of payments. These sources of operating cash flow were partially offset by an increase in receivables during the second quarter of 2015 primarily related to our EAS operation, one of our Virginia locations and one of our New York locations caused by increased revenue and timing of collections.

Cash provided by operating activities during the first six months of 2015 was $50.7 million compared with $13.6 million during the same period in 2014. The increase in cash provided by operations primarily relates an increase in accounts payable and accrued liabilities of $28.0 million

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compared to the prior year, primarily caused by timing of payments, to billings in excess of costs and estimated earnings which had a positive impact of $9.0 million on the comparison of cash flows due to the timing of customer billings and payments primarily at our EAS operation and higher net income in the current year period ($22.7 million) compared to the prior year period ($7.4 million). These sources of operating cash flow were partially offset by a $17.5 million negative impact due to increased receivables in the current year period primarily at our EAS operation caused by increased revenue and timing of collections.

Cash Used in Investing Activities—During the second quarter of 2015, cash used in investing activities was $5.9 million compared to $51.5 million during the second quarter of 2014. The $45.6 million decrease in cash used primarily relates to cash paid for the two acquisitions that were completed in the second quarter 2014.

Cash used in investing activities was $14.7 million for the first six months of 2015 compared to $59.2 million during 2014. The $44.5 million decrease in cash used primarily relates to cash paid for the three acquisitions that were completed in the first six months of 2014.

Cash Provided by (Used in) Financing Activities—Cash used in financing activities was $22.5 million for the second quarter of 2015 compared to cash provided by financing activities of $38.2 million during the second quarter of 2014. The primary reason for the $60.7 million decrease in cash provided by financing activities is due to net payments on the revolving credit facility during the current quarter of $18.0 million compared to net borrowings of $45.0 million during the second quarter of 2014.

Cash used in financing activities was $27.3 million for the first six months of 2015 compared to cash provided by financing activities of $43.3 million during the first six months of 2014. The $70.6 million decrease in cash provided by financing activities primarily relates to $20.5 million of net payments on the revolving line of credit in 2015 compared to $52.0 million of net borrowings in 2014.

Free Cash Flow—We define free cash flow as cash provided by operating activities, less customary capital expenditures, plus the proceeds from asset sales. We believe free cash flow, by encompassing both profit margins and the use of working capital over our approximately one year working capital cycle, is an effective measure of operating effectiveness and efficiency. We have included free cash flow information here for this reason, and because we are often asked about it by third parties evaluating us. However, free cash flow is not considered under generally accepted accounting principles to be a primary measure of an entity's financial results, and accordingly free cash flow should not be considered an alternative to operating income, net income, or amounts shown in our consolidated statements of cash flows as determined under generally accepted accounting principles. Free cash flow may be defined differently by other companies.

Share Repurchase Program

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Debt

Revolving Credit Facility

The Facility contains financial covenants defining various financial measures and the levels of these measures with which we must comply. Covenant compliance is assessed as of each quarter end.

The Facility's principal financial covenants include:

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We were in compliance with all of our financial covenants as of June 30, 2015.

Notes to Former Owners

Other Debt

Outlook

We have generated positive net free cash flow for the last sixteen calendar years, much of which occurred during challenging economic and industry conditions. We also expect to have significant borrowing capacity under our credit facility, and we maintain what we feel are reasonable cash balances. We believe these factors will provide us with sufficient liquidity to fund our operations for the foreseeable future.

Off-Balance Sheet Arrangements and Other Commitments

As is common in our industry, we have entered into certain off-balance sheet arrangements in the ordinary course of business that result in risks not directly reflected in our balance sheets. Our most significant off-balance sheet transactions include liabilities associated with noncancelable operating leases. We also have other off-balance sheet obligations involving letters of credit and surety guarantees.

We enter into noncancelable operating leases for many of our facility, vehicle and equipment needs. These leases allow us to conserve cash by paying a monthly lease rental fee for use of facilities, vehicles and equipment rather than purchasing them. At the end of the lease, we have no further obligation to the lessor. If we decide to cancel or terminate a lease before the end of its term, we would typically owe the lessor the remaining lease payments under the term of the lease.

Certain of our vendors require letters of credit to ensure reimbursement for amounts they are disbursing on our behalf, such as to beneficiaries under our self-funded insurance programs. We have

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also occasionally used letters of credit to guarantee performance under our contracts and to ensure payment to our subcontractors and vendors under those contracts. The letters of credit we provide are actually issued by our lenders through the Facility as described above. A letter of credit commits the lenders to pay specified amounts to the holder of the letter of credit if the holder demonstrates that we have failed to perform specified actions. If this were to occur, we would be required to reimburse the lenders. Depending on the circumstances of such a reimbursement, we may also have to record a charge to earnings for the reimbursement. Absent a claim, there is no payment or reserving of funds by us in connection with a letter of credit. However, because a claim on a letter of credit would require immediate reimbursement by us to our lenders, letters of credit are treated as a use of the Facility's capacity just the same as actual borrowings. Claims against letters of credit are rare in our industry. To date we have not had a claim made against a letter of credit that resulted in payments by a lender or by us. We believe that it is unlikely that we will have to fund claims under a letter of credit in the foreseeable future.

Many customers, particularly in connection with new construction, require us to post performance and payment bonds issued by a financial institution known as a surety. If we fail to perform under the terms of a contract or to pay subcontractors and vendors who provided goods or services under a contract, the customer may demand that the surety make payments or provide services under the bond. We must reimburse the sureties for any expenses or outlays they incur. To date, we are not aware of any losses to our sureties in connection with bonds the sureties have posted on our behalf, and we do not expect such losses to be incurred in the foreseeable future.

Surety market conditions have seen some strengthening as the commercial construction markets have started to rebound. Bonding capacity remains adequate in the current market conditions along with acceptable terms and conditions. Historically, approximately 25% to 35% of our business has required bonds. While we currently have strong surety relationships to support our bonding needs, future market conditions or changes in our sureties' assessment of our operating and financial risk could cause our sureties to decline to issue bonds for our work. If that were to occur, our alternatives include doing more business that does not require bonds, posting other forms of collateral for project performance such as letters of credit or cash, and seeking bonding capacity from other sureties. We would likely also encounter concerns from customers, suppliers and other market participants as to our creditworthiness. While we believe our general operating and financial characteristics, would enable us to ultimately respond effectively to an interruption in the availability of bonding capacity, such an interruption would likely cause our revenue and profits to decline in the near term.

Contractual Obligations

As of June 30, 2015, we have $48.0 million in letter of credit commitments, of which $20.3 million will expire in 2015 and $27.7 million will expire in 2016. The substantial majority of these letters of credit are posted with insurers who disburse funds on our behalf in connection with our workers' compensation, auto liability and general liability insurance program. These letters of credit provide additional security to the insurers that sufficient financial resources will be available to fund claims on our behalf, many of which develop over long periods of time, should we ever encounter financial duress. Posting of letters of credit for this purpose is a common practice for entities that manage their self-insurance programs through third-party insurers as we do. While most of these letter of credit commitments expire in 2015, we expect nearly all of them, particularly those supporting our insurance programs, will be renewed annually.

As of June 30, 2015, there have been no material changes in the contractual obligations as previously disclosed in "Item 7. Management's Discussion and Analysis of Financial Condition and Results of Operations" of our Annual Report on Form 10-K.

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Item 3. Quantitative and Qualitative Disclosures about Market Risk

We are exposed to market risk primarily related to potential adverse changes in interest rates as discussed below. We are actively involved in monitoring exposure to market risk and continue to develop and utilize appropriate risk management techniques. We are not exposed to any other significant financial market risks including commodity price risk, foreign currency exchange risk or interest rate risks from the use of derivative financial instruments. We do not use derivative financial instruments.

We have exposure to changes in interest rates under our revolving credit facility and the EAS credit line. We have a modest level of indebtedness under our debt facility and our indebtedness could increase in the future. Our debt with fixed interest rates consists of a note to former owners of an acquired company.

The following table presents principal amounts (stated in thousands) and related average interest rates by year of maturity for our debt obligations and their indicated fair market value at June 30, 2015:

	Twelve Months Ended June 30,

	2016		2017			2018			2019		2020		Thereafter		Fair Value
Fixed Rate Debt	$	—	$	500		$	500		$	—	$	—	$	—	$	1,000
Average Interest Rate		—		2.5	%		2.5	%		—		—		—		2.5	%
Variable Rate Debt	$	—	$	—		$	—		$	—	$	18,000	$	—	$	18,000

The weighted average interest rate applicable to borrowings under the Facility was approximately 1.4% as of June 30, 2015.

We measure certain assets at fair value on a nonrecurring basis. These assets are recognized at fair value when they are deemed to be other-than-temporarily impaired. We did not recognize any impairments in the current year on those assets required to be measured at fair value on a nonrecurring basis.

The valuation of our contingent earn-out payments is determined using a probability weighted discounted cash flow method. This analysis reflects the contractual terms of the purchase agreements (e.g., minimum and maximum payment, length of earn-out periods, manner of calculating any amounts due, etc.) and utilizes assumptions with regard to future cash flows, probabilities of achieving such future cash flows and a discount rate.

Item 4. Controls and Procedures

Evaluation of Disclosure Controls and Procedures

Our executive management is responsible for ensuring the effectiveness of the design and operation of our disclosure controls and procedures. We carried out an evaluation under the supervision and with the participation of our management, including our Chief Executive Officer and Chief Financial Officer, of the effectiveness of the design and operation of our disclosure controls and procedures (as defined in Rules 13a-15(e) and 15d-15(e) under the Securities Exchange Act of 1934) as of the end of the period covered by this report. Based on that evaluation, our Chief Executive Officer and Chief Financial Officer have concluded that our disclosure controls and procedures (as defined in Rules 13a-15(e) and 15d-15(e) of the Securities Exchange Act of 1934) are effective as of the end of the period covered by this report.

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Changes in Internal Control over Financial Reporting

There have not been any changes in our internal control over financial reporting (as such term is defined in Rules 13a-15(f) and 15d-15(f) under the Securities Exchange Act of 1934) during the three months ended June 30, 2015 that have materially affected, or are reasonably likely to materially affect, our internal control over financial reporting.

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COMFORT SYSTEMS USA, INC.
PART II—OTHER INFORMATION

Item 1. Legal Proceedings

We are subject to certain claims and lawsuits arising in the normal course of business. We maintain various insurance coverages to minimize financial risk associated with these claims. We have estimated and provided accruals for probable losses and related legal fees associated with certain of our litigation in our consolidated financial statements. Although management currently believes that resolving claims against us, individually or in aggregate, will not have a material adverse impact on our operating results, cash flows or financial condition, these matters are subject to inherent uncertainties and management's view of these matters may change in the future.

Item 1A. Risk Factors

In addition to the other information set forth in this report, you should carefully consider the factors discussed in Part 1, "Item 1A. Risk Factors" in our Annual Report on Form 10-K for the year ended December 31, 2014, which could materially affect our business, financial condition, or future results. Additional risks and uncertainties not currently known to us or that we currently deem to be immaterial also may materially adversely affect our business, financial condition, or future results.

Item 2. Unregistered Sales of Equity Securities and Use of Proceeds

Recent Sales of Unregistered Securities

None.

Issuer Purchases of Equity Securities

During the quarter ended June 30, 2015, we purchased our common shares in the following amounts at the following average prices:

Period		Average Price Paid Per Share

April 1 - April 30	43,750	$	20.61	6,610,118	951,065
May 1 - May 31	29,283	$	21.28	6,639,401	921,782
June 1 - June 30	—	$	—	6,639,401	921,782

	73,033	$	20.88	6,639,401	921,782

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Under our 2012 Equity Plan, employees may elect to have us withhold common shares to satisfy minimum statutory federal, state and local tax withholding obligations arising on the vesting of restricted stock unit awards and exercise of options. When we withhold these shares, we are required to remit to the appropriate taxing authorities the market price of the shares withheld, which could be deemed a purchase of the common shares by us on the date of withholding.

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Item 6. Exhibits

			Incorporated by Reference to the Exhibit Indicated Below and to the Filing with the Commission Indicated Below

Exhibit Number		Description of Exhibits	Exhibit Number		Filing or File Number
	3.1	Second Amended and Restated Certificate of Incorporation of the Registrant		3.1	333-24021
	3.2	Certificate of Amendment dated May 21, 1998		3.2	1998 Form 10-K
	3.3	Certificate of Amendment dated July 9, 2003		3.3	2003 Form 10-K
	3.4	Amended and Restated Bylaws of Comfort Systems USA, Inc.		3.1	March 26, 2012 Form 8-K
	31.1	Certification of Chief Executive Officer pursuant to Section 302 of the Sarbanes-Oxley Act of 2002			Filed Herewith
	31.2	Certification of Chief Financial Officer pursuant to Section 302 of the Sarbanes-Oxley Act of 2002			Filed Herewith
	32.1	Certification of Chief Executive Officer pursuant to Section 906 of the Sarbanes-Oxley Act of 2002			Furnished Herewith
	32.2	Certification of Chief Financial Officer pursuant to Section 906 of the Sarbanes-Oxley Act of 2002			Furnished Herewith
	101.INS	XBRL Instance Document
	101.SCH	XBRL Taxonomy Extension Schema Document
	101.CAL	XBRL Taxonomy Extension Calculation Linkbase Document
	101.DEF	XBRL Taxonomy Extension Definition Linkbase Document
	101.LAB	XBRL Taxonomy Extension Label Linkbase Document
	101.PRE	XBRL Taxonomy Extension Presentation Linkbase

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SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the Registrant has duly caused this report to be signed on its behalf by the undersigned thereunto duly authorized.


	COMFORT SYSTEMS USA, INC.
July 30, 2015	By:	/s/ BRIAN E. LANE Brian E. Lane President, Chief Executive Officer and Director
July 30, 2015	By:	/s/ WILLIAM GEORGE William George Executive Vice President and Chief Financial Officer
July 30, 2015	By:	/s/ JULIE S. SHAEFF Julie S. Shaeff Senior Vice President and Chief Accounting Officer