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California contractor license

Thermaxx Mechanical

Thermaxx Mechanical of Stockton holds California license 802624 (C20 Warm-Air Heating, Ventilating and Air-Conditioning, C38 Refrigeration). The CSLB file dated Oct 28, 2026 lists it as active.1 It expires Jan 31, 2028.

Doing business as Test Chamber Solutions Inc.

Licensed 24 years, longer than 73% of 45 active Stockton HVAC contractors.

Active

  • Workers' comp ends Dec 1, 2026 (34 days)

Thermaxx Mechanical, Stockton

License
802624
Class
C20 Warm-Air Heating, Ventilating and Air-Conditioning; C38 Refrigeration
Expires
Jan 31, 2028
Bond
$25,000
Workers' comp
Insured to Dec 1, 2026

CSLB file dated Oct 28, 2026

From the CSLB file dated Oct 28, 2026. Not a consumer report; check the board before you hire.

What bond, insurance and workers' comp are on file?

Bond
$25,000American Contractors Indemnity Company, from Jan 1, 2023, continuous
Liability insurance
Not in the CSLB fileCheck with the board
Workers' comp
InsuredTechnology Insurance Company Inc, from Dec 1, 2025, to Dec 1, 2026

What work does this license cover?

Issued Jan 2, 2002.

Which other Stockton businesses hold C20 Warm-Air Heating, Ventilating and Air-Conditioning?

California HVAC contractors

What should you check before hiring?

What to ask before you hire

  1. Ask whether it has been renewed. Something on this license ends within 60 days. Check again before you pay a deposit.
  2. Get the license number in writing. The name on the license should match the name on your contract and invoice.
  3. Check the class covers the job. A license for one trade doesn't cover another. California license classes
  4. Ask for a certificate of insurance sent to you by the insurance agent, not handed over by the contractor. How to read a COI
  5. Ask who will be on site. If a crew works on your property, ask for proof of workers' comp. An exemption on file means the contractor told the CSLB it has no employees.
  6. Put it in a written contract: license number, price, start date and payment schedule. Check the license again on the day you sign.

If the license is lapsed

  1. Don't sign or pay a deposit until the CSLB shows the license active again.
  2. Ask the contractor why. For a bond or insurance lapse, ask for proof that the new bond or policy was filed with the CSLB, then check again.
  3. If work has started, hold further payments, keep the contract, receipts and photos, and file a complaint with Contractors State License Board (CSLB).
  4. Check another contractor. California license lookup

Sources

  1. CSLB License Master (cslb.ca.gov, Oct 28, 2026)
  2. Contractors State License Board (CSLB)