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State files updated Oct 31, 2026
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California contractor license

Parker Boiler Co

Parker Boiler Co of Los Angeles holds California license 368870 (C4 Boiler, Hot Water Heating and Steam Fitting). The CSLB file dated Oct 31, 2026 lists it as active.1 It expires Feb 28, 2027.

Doing business as Parker Sid E Boiler MFG Company Inc.

Licensed 47 years, longer than 92% of 188 active Los Angeles HVAC contractors.

Active

Parker Boiler Co, Los Angeles

License
368870
Class
C4 Boiler, Hot Water Heating and Steam Fitting
Expires
Feb 28, 2027
Bond
$25,000
Workers' comp
Insured to Jan 1, 2027

CSLB file dated Oct 31, 2026

From the CSLB file dated Oct 31, 2026. Not a consumer report; check the board before you hire.

Has the board taken action on this license?

None in the CSLB file dated Oct 31, 2026. Confirm with the board: CSLB license check

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

Bond
$25,000Western Surety Company, from Apr 15, 2025, continuous
Liability insurance
Not in the CSLB fileCheck with the board
Workers' comp
InsuredOmaha National Casualty Company, from Jan 1, 2026, to Jan 1, 2027

Who is on this license?

Officer
Gregory E. DanehauerSince Jan 3, 1989
Officer
Sid C. DanenhauerSince Jan 7, 1997
Officer
Edward L. MarchakSince Jan 8, 2001
Responsible managing officer, CEO and president
Sid D. DanenhauerSince Feb 5, 1979

What work does this license cover?

Issued Feb 5, 1979.

Which other Los Angeles businesses hold C4 Boiler, Hot Water Heating and Steam Fitting?

HVAC Contractors in Los AngelesCalifornia 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 31, 2026)
  2. Contractors State License Board (CSLB)