HVAC contractor (C-20) in Petaluma, CA

There are 3 HVAC contractor (C-20) licenses with an address of record in Petaluma, CA, in the CSLB License Master data checked Oct 27, 2026. That is 0.2% of the 1,847 such licenses statewide; Petaluma ranks #189 of 425 CA cities for this license type. They are spread across 2 ZIP codes; the most common are 94952 (2), 94954 (1). Most list Sonoma County. By business type: Corporation 2, Sole Owner 1. The median first-issue year is 2018; the oldest license dates from 2015. 2 of them come up for renewal or expiration in the next 12 months, so re-check status before you sign a contract.

What a HVAC contractor (C-20) license covers

Warm-Air Heating, Ventilating and Air-Conditioning (C-20) covers furnaces, heat pumps, air-conditioning units, ducts and ventilation systems.

How to verify a license

Enter the license number in CSLB Instant License Check and confirm the status is active, the classification matches the work, and the contractor has a current bond and workers' compensation coverage (or a valid exemption). California requires the license number on contracts and advertising. Official lookup: CSLB Instant License Check.

HVAC contractor (C-20) licenses in Petaluma

Showing 3 of 3, A to Z. Listing order is alphabetical, not a recommendation.