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California contractor license

Dykier Inc

Dykier Inc of Chino Hills holds California license 439376 (C20 Warm-Air Heating, Ventilating and Air-Conditioning). The CSLB file dated Oct 29, 2026 lists it as active.1 It expires Sep 30, 2028.

Licensed 43 years, longer than 96% of 26 active Chino Hills HVAC contractors.

Active

Dykier Inc, Chino Hills

License
439376
Class
C20 Warm-Air Heating, Ventilating and Air-Conditioning
Expires
Sep 30, 2028
Bond
$25,000
Workers' comp
Insured to Apr 28, 2027

CSLB file dated Oct 29, 2026

From the CSLB file dated Oct 29, 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
InsuredPacific Compensation Insurance Company, from Jul 28, 2026, to Apr 28, 2027

Who is on this license?

Responsible managing officer, CEO and president
Paul S. DykierSince May 2, 1983

What work does this license cover?

Issued May 2, 1983. Reissued Sep 10, 2008.

Which other Chino Hills 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. Get the license number in writing. The name on the license should match the name on your contract and invoice.
  2. Check the class covers the job. A license for one trade doesn't cover another. California license classes
  3. Ask for a certificate of insurance sent to you by the insurance agent, not handed over by the contractor. How to read a COI
  4. 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.
  5. 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 29, 2026)
  2. Contractors State License Board (CSLB)