Best Licensed HVAC Contractors in Fairfax, CA
3 HVAC contractors registered in Fairfax hold current CSLB licenses, verified against official records as of August 17, 2026. All 3 are listed below, ordered by years licensed.
- 41 active C-20 heating and air conditioning licenses in Marin County; 3 registered in Fairfax
- California requires workers' compensation cover for C-20 licensees: 3 of Fairfax's 3 licenses (100.0%) carry a current policy with CSLB
- Median time licensed in Fairfax: 5 years
- Longest Fairfax licensure: since 1979
- 4 county licenses reach their expiration date within 90 days
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- Verified
- August 17, 2026
- Licensed since
- 1979
- Expires
- 2028-04-30
- Phone
- (415) 457-0607
- Verified
- August 17, 2026
- Licensed since
- 2021
- Expires
- 2027-03-31
- Phone
- (415) 250-1414
- Verified
- August 17, 2026
- Licensed since
- 2026
- Expires
- 2028-02-29
- Phone
- (415) 798-6131
Compare the top 3 at a glance
| Company | License | Workers' comp | Licensed since |
|---|---|---|---|
| Fitzpatrick's Heating Inc. | #371959 | On file | 1979 |
| Marin Heating And Air | #1074408 | On file | 2021 |
| Ro Heating And Air Conditioning Inc. | #1150853 | On file | 2026 |
Marin County HVAC licensure at a glance
California licenses contractors by classification and CSLB publishes one on every record, so supply can be counted exactly: 41 active C-20 heating and air conditioning licenses in Marin County, 3 of them registered in Fairfax. CSLB also publishes a real original issue date, which Washington's registry does not, so tenure is measurable here: the median Fairfax license has been held 5 years, and the longest-standing one dates to 1979. California law requires workers' compensation cover for C-20 licensees, so it is a legal baseline rather than a way to tell two contractors apart: 3 of Fairfax's 3 licenses (100.0%) carry a current policy in CSLB's file, and we do not rank on it. The contractor bond is not a signal here: 41 of the county's 41 licenses carry the same $25,000 bond California sets by statute. 4 county licenses reach their expiration date within the next 90 days. CSLB cannot link straight to a license record, so every listing above shows its number for you to type into CSLB's license lookup. How we verify.
HVAC Contractors in Fairfax: common questions
How many licensed HVAC contractors are there in Fairfax?
3 active C-20 heating and air conditioning licenses are registered in Fairfax, out of 41 across Marin County. 3 Fairfax-registered companies passed our license verification, and all 3 are listed on this page. Only licenses CSLB shows as CLEAR and unexpired are listed.
Does California license HVAC contractors?
Yes. California licenses contractors by classification, and C-20 is the CSLB classification that authorises this work. 3 active C-20 heating and air conditioning licenses are registered in Fairfax and 41 across Marin County, the longest-standing issued in 1979. Only CLEAR, unexpired licenses appear here.
How do I check an HVAC contractor's license in California?
Every listing above shows its CSLB license number. CSLB cannot link straight to a record, so open its license lookup and type the number in: it shows status, expiration, the contractor bond and workers' compensation cover, which California requires of C-20 licensees and 3 of Fairfax's 3 currently carry. 4 Marin County licenses expire within 90 days.