{"url_path":"/sec/fix/8-k/2026-05-21/cover-page","section_key":"cover-page","section_title":"Cover Page","topic":"sec","document":{"doc_type":"8-K","doc_date":"2026-05-21","source_url":"https://www.sec.gov/Archives/edgar/data/1035983/0001104659-26-065127-index.html","accession_number":"0001104659-26-065127","cik":"0001035983","ticker":"FIX","issuer_name":"COMFORT SYSTEMS USA INC","edgar_url":"https://www.sec.gov/Archives/edgar/data/1035983/0001104659-26-065127-index.html","primary_entity_key":"0001035983","primary_entity_name":"COMFORT SYSTEMS USA INC"},"word_count":309,"has_tables":true,"body_markdown":"false\n0001035983\n\n0001035983\n\n2026-05-18\n2026-05-18\n\niso4217:USD\n\nxbrli:shares\n\niso4217:USD\n\nxbrli:shares\n\n \n\n \n\n \n\n**UNITED STATES\nSECURITIES AND EXCHANGE COMMISSION**\n\n**Washington, D.C. 20549**\n\n \n\n**FORM 8-K**\n\n \n\n**CURRENT\nREPORT**\n\n**Pursuant\nto Section 13 OR 15(d) of The Securities Exchange Act of 1934**\n\n \n\nDate of Report (Date of\nearliest event reported) **May 18, 2026**\n\n \n\n**Comfort\nSystems USA, Inc.**\n\n(Exact name of registrant\nas specified in its charter)\n\n \n\n**Delaware**\n \n**1-13011**\n \n**76-0526487**\n\n(State or other jurisdiction\n \n(Commission\n \n(IRS Employer\n\nof incorporation)\n \nFile Number)\n \nIdentification No.)\n\n \n\n**9753 Katy Freeway****, Suite\n700**\n \n \n\n**Houston****,\nTexas**\n \n**77024**\n\n(Address of principal executive offices)\n \n(Zip Code)\n\n \n\nRegistrant’s telephone number,\nincluding area code **(713****) 830-9600**\n\n \n\n(Former name or former address, if changed\nsince last report.)\n\n \n\nCheck the appropriate box below if the Form 8-K\nfiling is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions:\n\n \n\n¨ Written\ncommunications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)\n\n¨ Soliciting\nmaterial pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)\n\n¨ Pre-commencement\ncommunications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))\n\n¨ Pre-commencement\ncommunications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))\n\n \n\nSecurities registered pursuant to Section 12(b) of the Act:\n\n \n\n**Title\nof each class**\n \n**Trading\nSymbol(s)**\n \n**Name\nof each exchange on which registered**\n\nCommon\nStock, $0.01 par value\n \nFIX\n \nNew\nYork Stock Exchange\n\n \n\nIndicate by check mark whether the registrant\nis an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§230.405 of this chapter) or Rule 12b-2 of the\nSecurities Exchange Act of 1934 (§240.12b-2 of this chapter).\n\n \n\nEmerging growth company ¨\n\n \n\nIf an emerging growth company, indicate by check\nmark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting\nstandards provided pursuant to Section 13(a) of the Exchange Act. ¨"}