Best Licensed HVAC Contractors in Sonoma, CA
11 HVAC contractors registered in Sonoma hold current CSLB licenses, verified against official records as of August 17, 2026. The 8 below are the top-ranked, ordered by years licensed.
- 177 active C-20 heating and air conditioning licenses in Sonoma County; 11 registered in Sonoma
- California requires workers' compensation cover for C-20 licensees: 11 of Sonoma's 11 licenses (100.0%) carry a current policy with CSLB
- Median time licensed in Sonoma: 5 years
- Longest Sonoma licensure: since 1957
- 13 county licenses reach their expiration date within 90 days
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- Verified
- August 17, 2026
- Licensed since
- 1957
- Expires
- 2028-06-30
- Phone
- (707) 938-8481
- Verified
- August 17, 2026
- Licensed since
- 1986
- Expires
- 2028-01-31
- Phone
- (707) 935-3625
- Verified
- August 17, 2026
- Licensed since
- 1987
- Expires
- 2027-04-30
- Phone
- (707) 938-3929
- Verified
- August 17, 2026
- Licensed since
- 1992
- Expires
- 2027-02-28
- Phone
- (707) 996-8683
- Verified
- August 17, 2026
- Licensed since
- 2006
- Expires
- 2028-02-29
- Phone
- (415) 233-2803
- Verified
- August 17, 2026
- Licensed since
- 2021
- Expires
- 2027-04-30
- Phone
- (707) 931-8777
- Verified
- August 17, 2026
- Licensed since
- 2021
- Expires
- 2027-10-31
- Phone
- (707) 721-6292
- Verified
- August 17, 2026
- Licensed since
- 2022
- Expires
- 2028-04-30
- Phone
- (707) 501-0657
Compare the top 6 at a glance
| Company | License | Workers' comp | Licensed since |
|---|---|---|---|
| Peterson Mechanical Inc. | #171486 | On file | 1957 |
| Lennon Heating & Air Conditioning Inc. | #486309 | On file | 1986 |
| Severson Heating & Cooling | #508393 | On file | 1987 |
| Boden Plumbing Inc. | #659920 | On file | 1992 |
| Pearce Home Comfort Inc. | #882004 | On file | 2006 |
| Healing Comfort Heating Air & Plumbing | #1075338 | On file | 2021 |
Sonoma County HVAC licensure at a glance
California licenses contractors by classification and CSLB publishes one on every record, so supply can be counted exactly: 177 active C-20 heating and air conditioning licenses in Sonoma County, 11 of them registered in Sonoma. CSLB also publishes a real original issue date, which Washington's registry does not, so tenure is measurable here: the median Sonoma license has been held 5 years, and the longest-standing one dates to 1957. 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: 11 of Sonoma's 11 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: 177 of the county's 177 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 Sonoma: common questions
How many licensed HVAC contractors are there in Sonoma?
11 active C-20 heating and air conditioning licenses are registered in Sonoma, out of 177 across Sonoma County. 11 Sonoma-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. 11 active C-20 heating and air conditioning licenses are registered in Sonoma and 177 across Sonoma County, the longest-standing issued in 1957. 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 11 of Sonoma's 11 currently carry. 13 Sonoma County licenses expire within 90 days.