Best Licensed HVAC Contractors in Millbrae, CA
7 HVAC contractors registered in Millbrae hold current CSLB licenses, verified against official records as of August 17, 2026. All 7 are listed below, ordered by years licensed.
- 135 active C-20 heating and air conditioning licenses in San Mateo County; 7 registered in Millbrae
- California requires workers' compensation cover for C-20 licensees: 7 of Millbrae's 7 licenses (100.0%) carry a current policy with CSLB
- Median time licensed in Millbrae: 18 years
- Longest Millbrae licensure: since 2000
- 13 county licenses reach their expiration date within 90 days
We earn a fee when you call businesses through numbers on this site. This never affects who is listed or how they rank.
- Verified
- August 17, 2026
- Licensed since
- 2000
- Expires
- 2026-09-30
- Phone
- (415) 317-9398
- Verified
- August 17, 2026
- Licensed since
- 2005
- Expires
- 2027-10-31
- Phone
- (415) 902-5804
- Verified
- August 17, 2026
- Licensed since
- 2007
- Expires
- 2027-09-30
- Phone
- (415) 812-3789
- Verified
- August 17, 2026
- Licensed since
- 2008
- Expires
- 2028-04-30
- Phone
- (415) 939-2632
- Verified
- August 17, 2026
- Licensed since
- 2022
- Expires
- 2026-08-31
- Phone
- (415) 748-6769
- Verified
- August 17, 2026
- Licensed since
- 2023
- Expires
- 2027-09-30
- Phone
- (650) 333-0594
- Verified
- August 17, 2026
- Licensed since
- 2026
- Expires
- 2028-01-31
- Phone
- (650) 222-3720
Compare the top 6 at a glance
| Company | License | Workers' comp | Licensed since |
|---|---|---|---|
| C & C General Engineering Inc. | #784535 | On file | 2000 |
| Penergy Engineering | #866729 | On file | 2005 |
| Radiant Construction | #900155 | On file | 2007 |
| Genuine Construction Inc. | #913541 | On file | 2008 |
| Kels Heating And Cooling | #1095352 | On file | 2022 |
| Thoren Construction Inc. | #1110508 | On file | 2023 |
San Mateo County HVAC licensure at a glance
California licenses contractors by classification and CSLB publishes one on every record, so supply can be counted exactly: 135 active C-20 heating and air conditioning licenses in San Mateo County, 7 of them registered in Millbrae. CSLB also publishes a real original issue date, which Washington's registry does not, so tenure is measurable here: the median Millbrae license has been held 18 years, and the longest-standing one dates to 2000. 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: 7 of Millbrae's 7 licenses (100.0%) carry a current policy in CSLB's file, and we do not rank on it. The contractor bond is not a signal here: 135 of the county's 135 licenses carry the same $25,000 bond California sets by statute. 13 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 Millbrae: common questions
How many licensed HVAC contractors are there in Millbrae?
7 active C-20 heating and air conditioning licenses are registered in Millbrae, out of 135 across San Mateo County. 7 Millbrae-registered companies passed our license verification, and all 7 are listed on this page. 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. 7 active C-20 heating and air conditioning licenses are registered in Millbrae and 135 across San Mateo County, the longest-standing issued in 2000. 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 7 of Millbrae's 7 currently carry. 13 San Mateo County licenses expire within 90 days.