Cover and table of contents

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Cover and table of contents

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

Form 10-Q


(Mark One)
☒	QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

For the quarterly period ended June 30, 2026


☐	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.)
9753 Katy FreewaySuite 700Houston, Texas 77024(Address of Principal Executive Offices) (Zip Code)

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

Securities registered pursuant to Section 12(b) of the Act:


Title of each class	Trading Symbol(s)	Name of each exchange on which registered
Common Stock, $0.01 par value	FIX	New York Stock Exchange

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 ⌧ No ◻

Indicate by check mark whether the registrant has submitted electronically every Interactive Data File required to be submitted 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 such files). Yes ⌧ No ◻

Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, a smaller reporting company, or an emerging growth company. See the definitions of “large accelerated filer,” “accelerated filer,” “smaller reporting company,” and “emerging growth company” in Rule 12b-2 of the Exchange Act.

Large accelerated filer ⌧	Accelerated filer ◻	Non-accelerated filer ◻	Smaller reporting company ☐	Emerging growth company ☐

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ◻

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

The number of shares outstanding of the issuer’s common stock as of July 17, 2026 was 35,194,329 (excluding treasury shares of 5,929,036).

COMFORT SYSTEMS USA, INC.

INDEX TO FORM 10-Q

FOR THE QUARTER ENDED JUNE 30, 2026


		Page
Part I—Financial Information		2
Item 1—Financial Statements		2
Consolidated Balance Sheets		2
Consolidated Statements of Operations		3
Consolidated Statements of Stockholders’ Equity		4
Consolidated Statements of Cash Flows		5
Condensed Notes to Consolidated Financial Statements		6
Item 2—Management’s Discussion and Analysis of Financial Condition and Results of Operations		21
Item 3—Quantitative and Qualitative Disclosures about Market Risk		33
Item 4—Controls and Procedures		33
Part II—Other Information		34
Item 1—Legal Proceedings		34
Item 1A—Risk Factors		34
Item 2—Unregistered Sales of Equity Securities and Use of Proceeds		34
Item 5—Other Information		35
Item 6—Exhibits		36
Signatures		37

PART I—FINANCIAL INFORMATION

Next: Item 1. Financial Statements