Best Licensed HVAC Contractors in Cotati, CA
8 HVAC contractors registered in Cotati hold current CSLB licenses, verified against official records as of August 17, 2026. All 8 are listed below, ordered by years licensed.
- 177 active C-20 heating and air conditioning licenses in Sonoma County; 8 registered in Cotati
- California requires workers' compensation cover for C-20 licensees: 8 of Cotati's 8 licenses (100.0%) carry a current policy with CSLB
- Median time licensed in Cotati: 16 years
- Longest Cotati licensure: since 1991
- 13 county licenses reach their expiration date within 90 days
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- Verified
- August 17, 2026
- Licensed since
- 1991
- Expires
- 2028-08-31
- Phone
- (707) 795-5755
- Verified
- August 17, 2026
- Licensed since
- 2000
- Expires
- 2028-03-31
- Phone
- (707) 794-8513
- Verified
- August 17, 2026
- Licensed since
- 2005
- Expires
- 2028-03-31
- Phone
- (707) 792-6840
- Verified
- August 17, 2026
- Licensed since
- 2010
- Expires
- 2028-04-30
- Phone
- (707) 794-9360
- Verified
- August 17, 2026
- Licensed since
- 2010
- Expires
- 2028-07-31
- Phone
- (707) 408-4328
- Verified
- August 17, 2026
- Licensed since
- 2021
- Expires
- 2028-05-31
- Phone
- (707) 284-1039
- Verified
- August 17, 2026
- Licensed since
- 2021
- Expires
- 2027-09-30
- Phone
- (707) 364-3342
- Verified
- August 17, 2026
- Licensed since
- 2025
- Expires
- 2027-04-30
- Phone
- (707) 338-7545
Compare the top 6 at a glance
| Company | License | Workers' comp | Licensed since |
|---|---|---|---|
| Buckley Heating & Air Conditioning Inc. | #628812 | On file | 1991 |
| Hulbert Heating & Air Conditioning Inc. | #788948 | On file | 2000 |
| R J Mechanical Inc. | #856063 | On file | 2005 |
| Hvac Controls Corporation | #945947 | On file | 2010 |
| Next Day Air And Heating | #950046 | On file | 2010 |
| Elevated Comfort Inc. | #1073860 | On file | 2021 |
Sonoma County HVAC licensure at a glance
California licenses contractors by classification and CSLB publishes one on every record, so supply can be counted exactly: 177 active C-20 heating and air conditioning licenses in Sonoma County, 8 of them registered in Cotati. CSLB also publishes a real original issue date, which Washington's registry does not, so tenure is measurable here: the median Cotati license has been held 16 years, and the longest-standing one dates to 1991. 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: 8 of Cotati's 8 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: 177 of the county's 177 licenses carry the same $25,000 bond California sets by statute. 13 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 Cotati: common questions
How many licensed HVAC contractors are there in Cotati?
8 active C-20 heating and air conditioning licenses are registered in Cotati, out of 177 across Sonoma County. 8 Cotati-registered companies passed our license verification, and all 8 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. 8 active C-20 heating and air conditioning licenses are registered in Cotati and 177 across Sonoma County, the longest-standing issued in 1991. 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 8 of Cotati's 8 currently carry. 13 Sonoma County licenses expire within 90 days.