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Licensed HVAC Contractors in Walnut, California

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

  • 22licensed HVAC contractors
  • 22active (Clear)
  • 0%with a suspension
  • 0%workers' comp exempt
  • 9.4 yrsmedian time licensed
  • 63.6%corp / LLC / partnership (36.4% sole owner)
  • 1new in the last 12 months
  • —change tracking began November 1, 2026

Walnut is home to 22 HVAC contractors in CSLB's license file, ranking #48 of 52 Los Angeles County cities for this trade. 100% are Clear.

About 0% report a workers' comp exemption, roughly the statewide norm for HVAC contractors. The share with a suspension, 0%, is 4.8 points lower than the Los Angeles County rate for the same license (4.8%).

1 of these licenses is less than a year old, while 45.5% have been held for 10 years or more. The median is 9.4 years.

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 Walnut

  1. Find the business in the list below, or search all 22 Walnut 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 0% of Walnut listings here already show a suspension.
  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 22 HVAC contractors in Walnut

Walnut 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 Walnut
Business nameLicense #StatusYearsWorkers' compBond
Air Temperature Control 449261 Clear 42 Insured On file
Weatherite Corporation 451778 Clear 42 Insured On file
Jay's Services 732053 Clear 29 Insured On file
David's Repair Center 750042 Clear 28 Insured On file
Alliance Industrial Refrigeration Services INC 825297 Clear 23 Insured On file
Cinda Construction INC 890143 Clear 19 Insured On file
S T W HVAC 968650 Clear 14 Insured On file
I Go Heating & Air Conditioning 998354 Clear 12 Insured On file
J C Air Conditioning INC 1009208 Clear 10 Insured On file
Pomona Valley Plumbing Heating Air Conditioning CO INC 1019549 Clear 10 Insured On file
Excellent G M E P Construction INC 1026917 Clear 9 Insured On file
Steve's Heating & Air Conditioning 1029672 Clear 9 Insured On file
I Go Heating & Air Conditioning INC 1049231 Clear 7 Insured On file
Air Caresaver Corp 1054832 Clear 7 Insured On file
Lz Comfort Home 1081673 Clear 5 Insured On file
Quinto Heating and Air 1082953 Clear 5 Insured On file
Jd Air 1091749 Clear 4 Insured On file
Aurum Construction 1111999 Clear 3 Insured On file
Expert HVAC Service INC 1115612 Clear 2 Insured On file
D L HVAC 1120809 Clear 2 Insured On file
Hy HVAC Service 1145147 Clear 1 Insured On file
Aolus HVAC 1159822 Clear <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 Walnut?

CSLB's current public file lists 22 HVAC contractors with a Walnut mailing address. 22 have a Clear status, and 95.5% 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?

CSLB issues the C-20 Warm-Air Heating, Ventilating and Air-Conditioning Contractor classification for this work. In Los Angeles County, 100% of Walnut's holders are Clear right now. The license requirement starts at $1,000 per job (the minor-work rule).

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 Walnut HVAC contractors, 0% are exempt (no employees), 100% insured and 0% without current coverage. Verify a policy with CSLB's insurer search (step by step).

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Guides