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Licensed HVAC Contractors in Livermore, California

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

  • 58licensed HVAC contractors
  • 55active (Clear)
  • 5.2%with a suspension
  • 0%workers' comp exempt
  • 17.7 yrsmedian time licensed
  • 74.1%corp / LLC / partnership (25.9% sole owner)
  • 3new in the last 12 months
  • —change tracking began November 1, 2026

Livermore is home to 58 HVAC contractors in CSLB's license file, ranking #1 of 6 Alameda County cities for this trade. 94.8% are Clear.

About 0% report a workers' comp exemption, roughly the statewide norm for HVAC contractors. The share with a suspension (5.2%) is close to the Alameda County rate for the same license (4.4%).

The median HVAC contractor here has held a license for 17.7 years (more than the statewide median of 11.6), and 3 licenses were 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 Livermore

  1. Find the business in the list below, or search all 58 Livermore listings, and open its profile. You want a Clear status and the C-20 classification (a B license can also cover it as part of a multi-trade job).
  2. Re-check the same number on CSLB's Instant License Check the day you sign; our copy is refreshed weekly and 5.2% of Livermore listings here already show a suspension.
  3. Get the bid and contract in writing with the license number on it. If the job tops $1,000 in labor and materials, a licensed HVAC contractor is required by law. See the $1,000 rule.

50 of 58 HVAC contractors in Livermore

Livermore 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 Livermore
Business nameLicense #StatusYearsWorkers' compBond
Miller's Air Conditioning & Heating 253756 Clear 58 Insured On file
Ok Heating and Air Conditioning INC 332447 Clear 49 Insured On file
J D General Construction INC 391749 Clear 46 Insured On file
Marina Mechanical Services 416198 Clear 44 Insured On file
Delcon Heating and Air Conditioning 493271 Clear 40 Insured On file
Miller Dale A 516223 Clear 39 Insured On file
Alpine Mechanical Service Company INC 553780 Clear 37 Insured On file
Robert James Cortez 606942 Clear 35 Insured On file
South Bay Mechanical 627316 Clear 35 Insured On file
Mountain Air 630391 Clear 35 Insured On file
Signal Heating & Air Conditioning 638992 Clear 34 Insured On file
Eagle Air 668002 Clear 33 Insured On file
Fault Line Plumbing INC 737079 Clear 29 Insured On file
Kinetics Mechanical Service INC 753650 Clear 28 Insured On file
Awesome Heating and Air Conditioning INC 813172 Clear 24 Insured On file
Key Mechanical Company 813609 Clear 24 Insured On file
Prime Mechanical Service INC 819114 Clear 23 Insured On file
Central Heating & Air Conditioning 825661 Clear 23 Insured On file
Ambient Heating and Air 837170 Clear 22 Insured On file
Bay Valley Heating and Air Conditioning 838243 Clear 22 Insured On file
Air Concepts INC 839627 Clear 22 Insured On file
Bradford Air & Heating 839474 Clear 22 Insured On file
Swift Heating & Air 838919 Clear 22 Insured On file
Superior Mechanical Services INC 854680 Clear 21 Insured On file
Richard's Heating & Air Repair INC 883458 Clear 20 Insured On file
Ais Heating and Air Conditioning 919756 Clear 18 Insured On file
Select Mechanical INC 928189 Clear 17 Insured On file
Your Energy Solutions 928652 Clear 17 Insured On file
Airteks.com INC 930172 Clear 17 Insured On file
Daniel Mechanical Services 984060 Clear 13 Insured On file
Matafied Mechanical 986098 Clear 13 Insured On file
Livermore Mechanical INC 986999 Clear 13 Insured On file
Kell Mechanical Heating and Air Conditioning INC 993569 Clear 12 Insured On file
Five Or Free Electrical Solutions INC 1002667 Clear 11 Insured On file
Streamline Power 1007841 Clear 11 Insured On file
East Bay Heating & Air 1015658 Clear 10 Insured On file
Omni Mechanical Solutions 1028951 Clear 9 Insured On file
Killen Mechanical INC 1034453 Clear 8 Insured On file
T 3 Mechanical INC 1038631 Clear 8 Insured On file
Left Coast Heating and Air Conditioning 1040611 Clear 8 Insured On file
Barker Heating & Cooling 1043930 Clear 8 Insured On file
Helfrich Refrigeration & Mechanical Services LLC 1047255 Clear 7 Insured On file
Service Experts Heating & Air Conditioning 1074641 Clear 5 Insured On file
Vargas Mechanical Services INC 1077486 Clear 5 Insured On file
Iron Horse Heating and Cooling 1083103 Clear 5 Insured On file
Sound HVAC Solutions 1092266 Clear 4 Insured On file
Ais Heating & Air Conditioning INC 1098502 Clear 4 Insured On file
CA Heating and Air Conditioning 1099080 Clear 3 Insured On file
Cohen Air Conditioning & Heating 1105472 Clear 3 Insured On file
Melgar & Associates Mechanical INC 1140422 Clear 1 Insured On file

See all 58 HVAC contractors in Livermore

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 Livermore?

CSLB's current public file lists 58 HVAC contractors with a Livermore mailing address. 55 have a Clear status, and 84.5% 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. 58 businesses in Livermore 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 Livermore HVAC contractors, 0% are exempt (no employees), 98.3% insured and 1.7% without current coverage. Verify a policy with CSLB's insurer search (step by step).

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