Best Licensed HVAC Contractors in Oakley, CA
18 HVAC contractors registered in Oakley hold current CSLB licenses, verified against official records as of August 17, 2026. The 8 below are the top-ranked, ordered by years licensed.
- 317 active C-20 heating and air conditioning licenses in Contra Costa County; 18 registered in Oakley
- California requires workers' compensation cover for C-20 licensees: 17 of Oakley's 18 licenses (94.4%) carry a current policy with CSLB
- Median time licensed in Oakley: 19 years
- Longest Oakley licensure: since 1978
- 28 county licenses reach their expiration date within 90 days
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- Verified
- August 17, 2026
- Licensed since
- 1978
- Expires
- 2028-07-31
- Phone
- (925) 783-9417
- Verified
- August 17, 2026
- Licensed since
- 1988
- Expires
- 2028-06-30
- Phone
- (925) 625-4963
- Verified
- August 17, 2026
- Licensed since
- 1999
- Expires
- 2027-03-31
- Phone
- (925) 772-0538
- Verified
- August 17, 2026
- Licensed since
- 2000
- Expires
- 2028-05-31
- Phone
- (925) 381-3387
- Verified
- August 17, 2026
- Licensed since
- 2000
- Expires
- 2028-08-31
- Phone
- (925) 625-9423
- Verified
- August 17, 2026
- Licensed since
- 2001
- Expires
- 2027-04-30
- Phone
- (925) 754-2730
- Verified
- August 17, 2026
- Licensed since
- 2005
- Expires
- 2026-08-31
- Phone
- (925) 548-5699
- Verified
- August 17, 2026
- Licensed since
- 2005
- Expires
- 2027-04-30
- Phone
- (925) 825-3455
Compare the top 6 at a glance
| Company | License | Workers' comp | Licensed since |
|---|---|---|---|
| Jim's Heating And Air Conditioning | #360458 | On file | 1978 |
| Fairview Heating & Air Conditioning | #533790 | On file | 1988 |
| Sup Air Man Cooling And Heating | #760021 | On file | 1999 |
| Mendez Air Heating & Air Conditioning | #778884 | On file | 2000 |
| Stevenson Mechanical Inc. | #783316 | On file | 2000 |
| Fertado Heating & Air | #792474 | On file | 2001 |
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, 18 of them registered in Oakley. CSLB also publishes a real original issue date, which Washington's registry does not, so tenure is measurable here: the median Oakley license has been held 19 years, and the longest-standing one dates to 1978. 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: 17 of Oakley's 18 licenses (94.4%) 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 Oakley: common questions
How many licensed HVAC contractors are there in Oakley?
18 active C-20 heating and air conditioning licenses are registered in Oakley, out of 317 across Contra Costa County. 18 Oakley-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. 18 active C-20 heating and air conditioning licenses are registered in Oakley and 317 across Contra Costa County, the longest-standing issued in 1978. 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 17 of Oakley's 18 currently carry. 28 Contra Costa County licenses expire within 90 days.