Best Licensed HVAC Contractors in San Ramon, CA
14 HVAC contractors registered in San Ramon 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; 14 registered in San Ramon
- California requires workers' compensation cover for C-20 licensees: 13 of San Ramon's 14 licenses (92.9%) carry a current policy with CSLB
- Median time licensed in San Ramon: 5 years
- Longest San Ramon licensure: since 2002
- 28 county licenses reach their expiration date within 90 days
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- Verified
- August 17, 2026
- Licensed since
- 2002
- Expires
- 2028-05-31
- Phone
- (925) 820-6938
- Verified
- August 17, 2026
- Licensed since
- 2004
- Expires
- 2026-08-31
- Phone
- (925) 895-2154
- Verified
- August 17, 2026
- Licensed since
- 2005
- Expires
- 2027-07-31
- Phone
- (408) 999-0305
- Verified
- August 17, 2026
- Licensed since
- 2006
- Expires
- 2028-05-31
- Phone
- (925) 899-0174
- Verified
- August 17, 2026
- Licensed since
- 2008
- Expires
- 2026-11-30
- Phone
- (844) 307-0832
- Verified
- August 17, 2026
- Licensed since
- 2009
- Expires
- 2027-11-30
- Phone
- (925) 337-3633
- Verified
- August 17, 2026
- Licensed since
- 2018
- Expires
- 2027-11-30
- Phone
- (209) 640-0957
- Verified
- August 17, 2026
- Licensed since
- 2020
- Expires
- 2026-09-30
- Phone
- (925) 984-5156
Compare the top 6 at a glance
| Company | License | Workers' comp | Licensed since |
|---|---|---|---|
| Legacy Mechanical & Energy Services Inc. | #808022 | On file | 2002 |
| Express Heating & Air Conditioning Inc. | #839831 | On file | 2004 |
| A & R Hvac | #861542 | On file | 2005 |
| Air Performance Heating & Cooling LLC | #876710 | On file | 2006 |
| Eco Systems Heating & Air | #924909 | On file | 2008 |
| S A Heating And Air Conditioning | #932696 | Expired 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, 14 of them registered in San Ramon. CSLB also publishes a real original issue date, which Washington's registry does not, so tenure is measurable here: the median San Ramon license has been held 5 years, and the longest-standing one dates to 2002. 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: 13 of San Ramon's 14 licenses (92.9%) 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 San Ramon: common questions
How many licensed HVAC contractors are there in San Ramon?
14 active C-20 heating and air conditioning licenses are registered in San Ramon, out of 317 across Contra Costa County. 14 San Ramon-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. 14 active C-20 heating and air conditioning licenses are registered in San Ramon and 317 across Contra Costa County, the longest-standing issued in 2002. 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 13 of San Ramon's 14 currently carry. 28 Contra Costa County licenses expire within 90 days.