Best Licensed HVAC Contractors in Fairfield, CA
28 HVAC contractors registered in Fairfield hold current CSLB licenses, verified against official records as of August 17, 2026. The 8 below are the top-ranked, ordered by years licensed.
- 106 active C-20 heating and air conditioning licenses in Solano County; 28 registered in Fairfield
- California requires workers' compensation cover for C-20 licensees: 26 of Fairfield's 28 licenses (92.9%) carry a current policy with CSLB
- Median time licensed in Fairfield: 10 years
- Longest Fairfield licensure: since 1976
- 6 county licenses reach their expiration date within 90 days
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- Verified
- August 17, 2026
- Licensed since
- 1976
- Expires
- 2027-01-31
- Phone
- (707) 747-0422
- Verified
- August 17, 2026
- Licensed since
- 1992
- Expires
- 2028-02-29
- Phone
- (707) 434-9461
- Verified
- August 17, 2026
- Licensed since
- 1996
- Expires
- 2028-09-30
- Phone
- (707) 437-5020
- Verified
- August 17, 2026
- Licensed since
- 1998
- Expires
- 2028-01-31
- Phone
- (707) 422-9200
- Verified
- August 17, 2026
- Licensed since
- 2000
- Expires
- 2028-04-30
- Phone
- (707) 207-0100
- Verified
- August 17, 2026
- Licensed since
- 2001
- Expires
- 2027-08-31
- Phone
- (707) 580-7887
- Verified
- August 17, 2026
- Licensed since
- 2003
- Expires
- 2027-04-30
- Phone
- (707) 434-8622
- Verified
- August 17, 2026
- Licensed since
- 2005
- Expires
- 2027-07-31
- Phone
- (707) 718-6014
Compare the top 6 at a glance
| Company | License | Workers' comp | Licensed since |
|---|---|---|---|
| North Bay Air Systems Inc. | #325637 | Exempt or none on file | 1976 |
| Graydon Kouri Plumbing Heating Air Conditioning | #638681 | On file | 1992 |
| Nielson Mechanical Inc. | #725457 | On file | 1996 |
| Fairfield Heating And Air Conditioning | #749563 | On file | 1998 |
| R L Fuller Inc. DBA Superior Mechanica | #777757 | On file | 2000 |
| Redeemed Air | #798887 | On file | 2001 |
Solano County HVAC licensure at a glance
California licenses contractors by classification and CSLB publishes one on every record, so supply can be counted exactly: 106 active C-20 heating and air conditioning licenses in Solano County, 28 of them registered in Fairfield. CSLB also publishes a real original issue date, which Washington's registry does not, so tenure is measurable here: the median Fairfield license has been held 10 years, and the longest-standing one dates to 1976. 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: 26 of Fairfield's 28 licenses (92.9%) carry a current policy in CSLB's file, and we do not rank on it. The contractor bond is not a signal here: 106 of the county's 106 licenses carry the same $25,000 bond California sets by statute. 6 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 Fairfield: common questions
How many licensed HVAC contractors are there in Fairfield?
28 active C-20 heating and air conditioning licenses are registered in Fairfield, out of 106 across Solano County. 28 Fairfield-registered companies passed our license verification, and the 8 on this page are the top-ranked of those. 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. 28 active C-20 heating and air conditioning licenses are registered in Fairfield and 106 across Solano County, the longest-standing issued in 1976. 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 26 of Fairfield's 28 currently carry. 6 Solano County licenses expire within 90 days.