Best Licensed HVAC Contractors in Clayton, CA
8 HVAC contractors registered in Clayton hold current CSLB licenses, verified against official records as of August 17, 2026. All 8 are listed below, ordered by years licensed.
- 317 active C-20 heating and air conditioning licenses in Contra Costa County; 8 registered in Clayton
- California requires workers' compensation cover for C-20 licensees: 8 of Clayton's 8 licenses (100.0%) carry a current policy with CSLB
- Median time licensed in Clayton: 12 years
- Longest Clayton licensure: since 1987
- 28 county licenses reach their expiration date within 90 days
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- Verified
- August 17, 2026
- Licensed since
- 1987
- Expires
- 2027-03-31
- Phone
- (925) 672-0930
- Verified
- August 17, 2026
- Licensed since
- 1999
- Expires
- 2027-07-31
- Phone
- (925) 673-8987
- Verified
- August 17, 2026
- Licensed since
- 2004
- Expires
- 2028-01-31
- Phone
- (925) 331-8388
- Verified
- August 17, 2026
- Licensed since
- 2012
- Expires
- 2028-06-30
- Phone
- (925) 687-4771
- Verified
- August 17, 2026
- Licensed since
- 2014
- Expires
- 2026-12-31
- Phone
- (925) 953-3007
- Verified
- August 17, 2026
- Licensed since
- 2017
- Expires
- 2027-07-31
- Phone
- (925) 695-4074
- Verified
- August 17, 2026
- Licensed since
- 2022
- Expires
- 2027-04-30
- Phone
- (415) 882-6888
- Verified
- August 17, 2026
- Licensed since
- 2026
- Expires
- 2028-07-31
- Phone
- (925) 494-4188
Compare the top 6 at a glance
| Company | License | Workers' comp | Licensed since |
|---|---|---|---|
| Clayton Valley Mechanical Heating And Air Conditioning | #507324 | On file | 1987 |
| Apodaca Mechanical | #765801 | On file | 1999 |
| Clayton Brothers Heating And Air Inc. | #838282 | On file | 2004 |
| Polar Air Services | #974017 | On file | 2012 |
| 411 Heating & Ac LLC | #993500 | On file | 2014 |
| Christian Hvac | #1029082 | On file | 2017 |
Contra Costa County HVAC licensure at a glance
California licenses contractors by classification and CSLB publishes one on every record, so supply can be counted exactly: 317 active C-20 heating and air conditioning licenses in Contra Costa County, 8 of them registered in Clayton. CSLB also publishes a real original issue date, which Washington's registry does not, so tenure is measurable here: the median Clayton license has been held 12 years, and the longest-standing one dates to 1987. 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 Clayton'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: 317 of the county's 317 licenses carry the same $25,000 bond California sets by statute. 28 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 Clayton: common questions
How many licensed HVAC contractors are there in Clayton?
8 active C-20 heating and air conditioning licenses are registered in Clayton, out of 317 across Contra Costa County. 8 Clayton-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 Clayton and 317 across Contra Costa County, the longest-standing issued in 1987. 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 Clayton's 8 currently carry. 28 Contra Costa County licenses expire within 90 days.