Best Licensed HVAC Contractors in Menlo Park, CA
9 HVAC contractors registered in Menlo Park 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; 10 registered in Menlo Park
- California requires workers' compensation cover for C-20 licensees: 10 of Menlo Park's 10 licenses (100.0%) carry a current policy with CSLB
- Median time licensed in Menlo Park: 13 years
- Longest Menlo Park licensure: since 1977
- 13 county licenses reach their expiration date within 90 days
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- Verified
- August 17, 2026
- Licensed since
- 1977
- Expires
- 2027-05-31
- Phone
- (650) 854-4221
- Verified
- August 17, 2026
- Licensed since
- 1986
- Expires
- 2028-03-31
- Phone
- (650) 327-3200
- Verified
- August 17, 2026
- Licensed since
- 1991
- Expires
- 2027-03-31
- Phone
- (510) 264-1298
- Verified
- August 17, 2026
- Licensed since
- 2011
- Expires
- 2027-08-31
- Phone
- (408) 202-2231
- Verified
- August 17, 2026
- Licensed since
- 2012
- Expires
- 2026-10-31
- Phone
- (650) 492-1236
- Verified
- August 17, 2026
- Licensed since
- 2018
- Expires
- 2026-08-31
- Phone
- (408) 482-5861
- Verified
- August 17, 2026
- Licensed since
- 2022
- Expires
- 2028-05-31
- Phone
- (650) 237-9095
- Verified
- August 17, 2026
- Licensed since
- 2022
- Expires
- 2026-12-31
- Phone
- (408) 505-0274
Compare the top 6 at a glance
| Company | License | Workers' comp | Licensed since |
|---|---|---|---|
| Guy Plumbing & Heating Inc. | #330785 | On file | 1977 |
| Dura - Foam Inc. | #488066 | On file | 1986 |
| I L Mechanical Inc. | #615750 | On file | 1991 |
| A N A Building And Design Inc. | #964480 | On file | 2011 |
| Dblin Construction LLC | #978548 | On file | 2012 |
| All Bay Builders Performance | #1042837 | On file | 2018 |
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, 10 of them registered in Menlo Park. CSLB also publishes a real original issue date, which Washington's registry does not, so tenure is measurable here: the median Menlo Park license has been held 13 years, and the longest-standing one dates to 1977. 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: 10 of Menlo Park's 10 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 Menlo Park: common questions
How many licensed HVAC contractors are there in Menlo Park?
10 active C-20 heating and air conditioning licenses are registered in Menlo Park, out of 135 across San Mateo County. 9 Menlo Park-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 Menlo Park and 135 across San Mateo County, the longest-standing issued in 1977. 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 10 of Menlo Park's 10 currently carry. 13 San Mateo County licenses expire within 90 days.