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Licensed HVAC Contractors in Petaluma, California

Updated November 1, 2026 from CSLB's public license file · C-20 Warm-Air Heating, Ventilating and Air-Conditioning Contractor

  • 26licensed HVAC contractors
  • 21active (Clear)
  • 19.2%with a suspension
  • 0%workers' comp exempt
  • 20.5 yrsmedian time licensed
  • 61.5%corp / LLC / partnership (38.5% sole owner)
  • 1new in the last 12 months
  • —change tracking began November 1, 2026

Petaluma is home to 26 HVAC contractors in CSLB's license file, ranking #2 of 2 Sonoma County cities for this trade. 80.8% are Clear.

About 0% report a workers' comp exemption, roughly the statewide norm for HVAC contractors. The share with a suspension, 19.2%, is 12.3 points higher than the Sonoma County rate for the same license (6.9%).

The median HVAC contractor here has held a license for 20.5 years (more than the statewide median of 11.6), and 1 license was issued in the last 12 months.

In California this work generally calls for the C-20 Warm-Air Heating, Ventilating and Air-Conditioning Contractor license (or a B license when it is part of a larger multi-trade job). See the C-20 Warm-Air Heating, Ventilating and Air-Conditioning Contractor guide for what the license covers.

How to check a HVAC contractor's license in Petaluma

  1. Look the company up by name or license number (search Petaluma). On the profile, confirm three things: Clear status, the C-20 license for this kind of work, and a contractor's bond on file.
  2. Confirm it live with CSLB's Instant License Check. Statuses change between our weekly refreshes, especially workers' comp and bond suspensions.
  3. Ask for the pocket license and a photo ID and match the name to your contract. Work of $1,000 or more needs a license (the $1,000 rule), and a down payment can't exceed $1,000 or 10% (down payment rules).

All 26 HVAC contractors in Petaluma

Petaluma HVAC contractors sorted with Clear licenses first, then by years licensed. Badges reflect CSLB's file dated November 1, 2026, not a rating of anyone's work.

Licensed HVAC contractors in Petaluma
Business nameLicense #StatusYearsWorkers' compBond
Tri-County Heating and Sheet Metal INC 212733 Clear 64 Insured On file
Ongaro & Sons 215233 Clear 63 Insured On file
Masterson Bryan Enterprises 271933 Clear 55 Insured On file
Adams Refrigeration Service INC A California Corporation 279103 Clear 54 Insured On file
Paramount Plmg & Htg 390434 Clear 46 Insured On file
Owens John Services INC 501853 Clear 39 Insured On file
Bkb Heating Air Conditioning & Sheet Metal 610945 Clear 35 Insured On file
Galvaknight Sheet Metal Solutions INC 761646 Clear 27 Insured On file
M T B 762453 Clear 27 Insured On file
Milano Mechanical INC 797754 Clear 25 Insured On file
Ledesma Heating & Air 901153 Clear 19 Insured On file
E M L HVAC INC 993226 Clear 12 Insured On file
Jm HVAC 1001595 Clear 11 Insured On file
Core Heating & Air Conditioning 1038373 Clear 8 Insured On file
Greenlief Energy INC 1059505 Clear 7 Insured On file
McIsaac Heating 1071345 Clear 5 Insured On file
Grupe HVAC 1076376 Clear 5 Insured On file
Castle Heating & Air 1079375 Clear 5 Insured On file
Martin Electric & HVAC 1080015 Clear 5 Insured On file
Stat Heating & Air Corporation 1123282 Clear 2 Insured On file
Green Core Heating & Air INC 1131183 Clear 1 Insured On file
Acrat Plumbing & Heating LLC 623720 Susp: employee/worker bond 35 Insured On file
Herrin Steve P 668660 Susp: workers' compensation 33 None On file
Gibbs Heating & Air Conditioning 855710 Susp: workers' compensation 21 None On file
Miller Scott M 1006302 Susp: contractor's bond 11 Insured On file
Sunshine Heating and Air 1154409 Susp: employee/worker bond <1 Insured On file

Source: CSLB public data · Updated November 1, 2026 Status can change at any time. Verify on CSLB's Instant License Check.

Frequently asked questions

How many licensed HVAC contractors are in Petaluma?

CSLB's current public file lists 26 HVAC contractors with a Petaluma mailing address. 21 have a Clear status, and 73.1% show no issues at all in the file (no suspension, no pending action, bond on file, not near expiration).

What license does a HVAC contractor need in California?

Look for C-20 on the license. 26 businesses in Petaluma hold it. Small jobs under $1,000 with no permit and no employees are exempt; everything else needs a license (details).

How do I check a HVAC contractor's workers' comp?

Each profile shows the workers' comp type, insurer and policy dates from CSLB's file. Among Petaluma HVAC contractors, 0% are exempt (no employees), 92.3% insured and 7.7% without current coverage. Verify a policy with CSLB's insurer search (step by step).

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