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Licensed HVAC Contractors in Fremont, California

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

  • 27licensed HVAC contractors
  • 25active (Clear)
  • 7.4%with a suspension
  • 0%workers' comp exempt
  • 14.4 yrsmedian time licensed
  • 66.7%corp / LLC / partnership (33.3% sole owner)
  • 1new in the last 12 months
  • —change tracking began November 1, 2026

There are 27 HVAC contractors based in Fremont in CSLB's current file. 25 (92.6%) have a Clear status as of November 1, 2026.

About 0% report a workers' comp exemption, roughly the statewide norm for HVAC contractors. The share with a suspension, 7.4%, is 3 points higher than the Alameda County rate for the same license (4.4%).

Experience varies: 55.6% have been licensed 10+ years and 1 is new this year (median 14.4 years, vs 11.6 statewide).

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 Fremont

  1. Look the company up by name or license number (search Fremont). 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. Before any money changes hands, verify the license on CSLB's own lookup. Our data comes from CSLB's weekly file, so a very recent change may not show here yet.
  3. Match the license holder's name to the name on the written contract and the person you meet. Ask for proof of workers' comp if anyone besides the owner will work on site. Hiring checklist.

All 27 HVAC contractors in Fremont

Fremont 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 Fremont
Business nameLicense #StatusYearsWorkers' compBond
A H Construction 566329 Clear 37 Insured On file
R J Heating & Air Conditioning 619678 Clear 35 Insured On file
Aircal Heating 723257 Clear 30 Insured On file
R C's Mechanical Services 724430 Clear 30 Insured On file
J F K Builders 744983 Clear 28 Insured On file
All Bay Contractors INC 764575 Clear 27 Insured On file
A Sanchez Mechanical 798316 Clear 25 Insured On file
Lopez Hector 929383 Clear 17 Insured On file
Skyblue Heating & Air Conditioning INC 948387 Clear 16 Insured On file
Airice HVAC Services 954031 Clear 16 Insured On file
Pacific Breeze Mechanical 955976 Clear 15 Insured On file
Amor Plumbing 972156 Clear 14 Insured On file
Ame Mechanical INC 973132 Clear 14 Insured On file
C S L Construction INC 1004724 Clear 11 Insured On file
Giant H V A C INC 1044940 Clear 8 Insured On file
Infinity Mechanical INC 1067088 Clear 6 Insured On file
Service Rescue INC 1082095 Clear 5 Insured On file
Impulse Pro 1082988 Clear 5 Insured On file
Heating and Air Experts LLC 1111796 Clear 3 Insured On file
Qiang HVAC Service 1122339 Clear 2 Insured On file
Tesla Construction INC 1127593 Clear 2 Insured On file
J&M Heating & Cooling LLC 1127824 Clear 2 Insured On file
The Refrigeration Group 1143665 Clear 1 Insured On file
Utmate Powers INC 1143603 Clear 1 Insured On file
Toto Heating and Cooling 1146057 Clear 1 Insured On file
Alton Air Conditioning & Heating INC 511296 Susp: workers' compensation 39 None On file
Grassrock Corporation 1058407 Susp: workers' compensation 7 None 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 Fremont?

CSLB's current public file lists 27 HVAC contractors with a Fremont mailing address. 25 have a Clear status, and 85.2% 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. 27 businesses in Fremont 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 Fremont HVAC contractors, 0% are exempt (no employees), 92.6% insured and 7.4% without current coverage. Verify a policy with CSLB's insurer search (step by step).

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