Best Licensed HVAC Contractors in Redwood City, CA
25 HVAC contractors registered in Redwood City hold current CSLB licenses, verified against official records as of August 17, 2026. The 8 below are the top-ranked, ordered by years licensed.
- 135 active C-20 heating and air conditioning licenses in San Mateo County; 25 registered in Redwood City
- California requires workers' compensation cover for C-20 licensees: 25 of Redwood City's 25 licenses (100.0%) carry a current policy with CSLB
- Median time licensed in Redwood City: 17 years
- Longest Redwood City licensure: since 1959
- 13 county licenses reach their expiration date within 90 days
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- Verified
- August 17, 2026
- Licensed since
- 1959
- Expires
- 2027-04-30
- Phone
- (650) 366-5393
- Verified
- August 17, 2026
- Licensed since
- 1971
- Expires
- 2027-04-30
- Phone
- (650) 364-8081
- Verified
- August 17, 2026
- Licensed since
- 1979
- Expires
- 2027-07-31
- Phone
- (650) 868-4524
- Verified
- August 17, 2026
- Licensed since
- 1981
- Expires
- 2027-12-31
- Phone
- (669) 292-5300
- Verified
- August 17, 2026
- Licensed since
- 1983
- Expires
- 2028-05-31
- Phone
- (650) 368-4408
- Verified
- August 17, 2026
- Licensed since
- 1990
- Expires
- 2028-05-31
- Phone
- (650) 508-0522
- Verified
- August 17, 2026
- Licensed since
- 1990
- Expires
- 2028-05-31
- Phone
- (650) 367-8143
- Verified
- August 17, 2026
- Licensed since
- 1992
- Expires
- 2028-04-30
- Phone
- (650) 533-8323
Compare the top 6 at a glance
| Company | License | Workers' comp | Licensed since |
|---|---|---|---|
| John A Boudreau Plumbing And Heating Inc. | #182224 | On file | 1959 |
| Aire Sheet Metal Inc. | #271264 | On file | 1971 |
| West Bay Heating And Air Conditioning | #378639 | On file | 1979 |
| Janal Heating & Air Conditioning | #398495 | On file | 1981 |
| Bodnar Heating & Air Conditioning Inc. | #444468 | On file | 1983 |
| Bay Area Plumbing & Heating | #584345 | On file | 1990 |
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, 25 of them registered in Redwood City. CSLB also publishes a real original issue date, which Washington's registry does not, so tenure is measurable here: the median Redwood City license has been held 17 years, and the longest-standing one dates to 1959. 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: 25 of Redwood City's 25 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 Redwood City: common questions
How many licensed HVAC contractors are there in Redwood City?
25 active C-20 heating and air conditioning licenses are registered in Redwood City, out of 135 across San Mateo County. 25 Redwood City-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. 25 active C-20 heating and air conditioning licenses are registered in Redwood City and 135 across San Mateo County, the longest-standing issued in 1959. 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 25 of Redwood City's 25 currently carry. 13 San Mateo County licenses expire within 90 days.