Best Licensed HVAC Contractors in Pittsburg, CA
18 HVAC contractors registered in Pittsburg 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 Pittsburg
- California requires workers' compensation cover for C-20 licensees: 17 of Pittsburg's 18 licenses (94.4%) carry a current policy with CSLB
- Median time licensed in Pittsburg: 7 years
- Longest Pittsburg licensure: since 1974
- 28 county licenses reach their expiration date within 90 days
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- Verified
- August 17, 2026
- Licensed since
- 1974
- Expires
- 2027-01-31
- Phone
- (925) 427-5522
- Verified
- August 17, 2026
- Licensed since
- 1998
- Expires
- 2028-03-31
- Phone
- (925) 381-7555
- Verified
- August 17, 2026
- Licensed since
- 1999
- Expires
- 2028-07-31
- Phone
- (925) 261-9313
- Verified
- August 17, 2026
- Licensed since
- 2013
- Expires
- 2028-06-30
- Phone
- (925) 689-2525
- Verified
- August 17, 2026
- Licensed since
- 2014
- Expires
- 2028-04-30
- Phone
- (925) 446-1112
6.Eco-pro
- Verified
- August 17, 2026
- Licensed since
- 2016
- Expires
- 2028-06-30
- Phone
- (844) 605-2194
- Verified
- August 17, 2026
- Licensed since
- 2017
- Expires
- 2027-03-31
- Phone
- (844) 860-3719
- Verified
- August 17, 2026
- Licensed since
- 2019
- Expires
- 2027-05-31
- Phone
- (925) 408-9397
Compare the top 6 at a glance
| Company | License | Workers' comp | Licensed since |
|---|---|---|---|
| Stewart Heating & Air Inc. | #290747 | On file | 1974 |
| Dei Monti Inc. | #747609 | On file | 1998 |
| Judieh Plumbing Heating & Air LLC | #760777 | On file | 1999 |
| Bay Area Hvac & Refrigeration | #981538 | On file | 2013 |
| Atlantis H V A C Service | #992458 | On file | 2014 |
| Eco-pro | #1014880 | On file | 2016 |
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 Pittsburg. CSLB also publishes a real original issue date, which Washington's registry does not, so tenure is measurable here: the median Pittsburg license has been held 7 years, and the longest-standing one dates to 1974. 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 Pittsburg'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 Pittsburg: common questions
How many licensed HVAC contractors are there in Pittsburg?
18 active C-20 heating and air conditioning licenses are registered in Pittsburg, out of 317 across Contra Costa County. 18 Pittsburg-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 Pittsburg and 317 across Contra Costa County, the longest-standing issued in 1974. 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 Pittsburg's 18 currently carry. 28 Contra Costa County licenses expire within 90 days.