Best Licensed HVAC Contractors in Discovery Bay, CA
10 HVAC contractors registered in Discovery Bay 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; 10 registered in Discovery Bay
- California requires workers' compensation cover for C-20 licensees: 9 of Discovery Bay's 10 licenses (90.0%) carry a current policy with CSLB
- Median time licensed in Discovery Bay: 16 years
- Longest Discovery Bay licensure: since 1985
- 28 county licenses reach their expiration date within 90 days
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1.Fairway
- Verified
- August 17, 2026
- Licensed since
- 1985
- Expires
- 2027-09-30
- Phone
- (510) 471-5911
- Verified
- August 17, 2026
- Licensed since
- 2001
- Expires
- 2027-10-31
- Phone
- (925) 634-8859
- Verified
- August 17, 2026
- Licensed since
- 2006
- Expires
- 2028-01-31
- Phone
- (925) 584-0800
- Verified
- August 17, 2026
- Licensed since
- 2006
- Expires
- 2027-04-30
- Phone
- (925) 855-1560
- Verified
- August 17, 2026
- Licensed since
- 2007
- Expires
- 2027-01-31
- Phone
- (925) 776-4835
- Verified
- August 17, 2026
- Licensed since
- 2009
- Expires
- 2027-11-30
- Phone
- (925) 634-4689
- Verified
- August 17, 2026
- Licensed since
- 2016
- Expires
- 2028-04-30
- Phone
- (925) 315-1468
- Verified
- August 17, 2026
- Licensed since
- 2017
- Expires
- 2027-12-31
- Phone
- (925) 477-8906
Compare the top 6 at a glance
| Company | License | Workers' comp | Licensed since |
|---|---|---|---|
| Fairway | #479802 | On file | 1985 |
| Ambient Air Inc. | #789422 | On file | 2001 |
| A G Heating & Air Conditioning | #871499 | On file | 2006 |
| Air Masters Heating And Air Conditioning Inc. | #873520 | Expired on file | 2006 |
| Christy Plumbing | #888948 | On file | 2007 |
| Delta Climate Control | #940106 | On file | 2009 |
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, 10 of them registered in Discovery Bay. CSLB also publishes a real original issue date, which Washington's registry does not, so tenure is measurable here: the median Discovery Bay license has been held 16 years, and the longest-standing one dates to 1985. 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: 9 of Discovery Bay's 10 licenses (90.0%) 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 Discovery Bay: common questions
How many licensed HVAC contractors are there in Discovery Bay?
10 active C-20 heating and air conditioning licenses are registered in Discovery Bay, out of 317 across Contra Costa County. 10 Discovery Bay-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. 10 active C-20 heating and air conditioning licenses are registered in Discovery Bay and 317 across Contra Costa County, the longest-standing issued in 1985. 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 9 of Discovery Bay's 10 currently carry. 28 Contra Costa County licenses expire within 90 days.