Best Licensed HVAC Contractors in Oakland, CA
49 HVAC contractors registered in Oakland hold current CSLB licenses, verified against official records as of August 17, 2026. The 8 below are the top-ranked, ordered by years licensed.
- 273 active C-20 heating and air conditioning licenses in Alameda County; 51 registered in Oakland
- California requires workers' compensation cover for C-20 licensees: 47 of Oakland's 51 licenses (92.2%) carry a current policy with CSLB
- Median time licensed in Oakland: 10 years
- Longest Oakland licensure: since 1979
- 20 county licenses reach their expiration date within 90 days
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- Verified
- August 17, 2026
- Licensed since
- 1979
- Expires
- 2027-11-30
- Phone
- (510) 533-2044
- Verified
- August 17, 2026
- Licensed since
- 1980
- Expires
- 2028-03-31
- Phone
- (510) 632-3173
- Verified
- August 17, 2026
- Licensed since
- 1983
- Expires
- 2027-10-31
- Phone
- (510) 701-4631
- Verified
- August 17, 2026
- Licensed since
- 1986
- Expires
- 2028-04-30
- Phone
- (510) 893-1343
- Verified
- August 17, 2026
- Licensed since
- 1986
- Expires
- 2028-04-30
- Phone
- (510) 593-3818
- Verified
- August 17, 2026
- Licensed since
- 1986
- Expires
- 2026-09-30
- Phone
- (510) 910-5469
- Verified
- August 17, 2026
- Licensed since
- 1987
- Expires
- 2026-10-31
- Phone
- (510) 655-5404
- Verified
- August 17, 2026
- Licensed since
- 1988
- Expires
- 2028-07-31
- Phone
- (510) 534-4296
Compare the top 6 at a glance
| Company | License | Workers' comp | Licensed since |
|---|---|---|---|
| J M Campbell Company Inc. | #384593 | On file | 1979 |
| Monterey And Mwh Constructors, A Joint Venture | #388361 | On file | 1980 |
| Chief's Refrigeration Air | #447976 | On file | 1983 |
| Your Warm Friend Inc. DBA Atlas Heating & Air-conditioning Co | #489501 | On file | 1986 |
| Heating Experts | #489735 | On file | 1986 |
| Stine Builders | #497655 | On file | 1986 |
Alameda County HVAC licensure at a glance
California licenses contractors by classification and CSLB publishes one on every record, so supply can be counted exactly: 273 active C-20 heating and air conditioning licenses in Alameda County, 51 of them registered in Oakland. CSLB also publishes a real original issue date, which Washington's registry does not, so tenure is measurable here: the median Oakland license has been held 10 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: 47 of Oakland's 51 licenses (92.2%) carry a current policy in CSLB's file, and we do not rank on it. The contractor bond is not a signal here: 273 of the county's 273 licenses carry the same $25,000 bond California sets by statute. 20 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 Oakland: common questions
How many licensed HVAC contractors are there in Oakland?
51 active C-20 heating and air conditioning licenses are registered in Oakland, out of 273 across Alameda County. 49 Oakland-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. 51 active C-20 heating and air conditioning licenses are registered in Oakland and 273 across Alameda 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 47 of Oakland's 51 currently carry. 20 Alameda County licenses expire within 90 days.