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California contractor license

Professional Duct Cleaning Co

Professional Duct Cleaning Co of Los Angeles holds California license 984738 (B General Building, C20 Warm-Air Heating, Ventilating and Air-Conditioning, C38 Refrigeration, D64). The CSLB file dated Oct 31, 2026 lists it as active.1 It expires Jun 30, 2027.

Doing business as Optimum Indoor Air And Environmental Inc.

Licensed 13 years, longer than 56% of 188 active Los Angeles HVAC contractors.

Active

Professional Duct Cleaning Co, Los Angeles

License
984738
Class
B General Building; C20 Warm-Air Heating, Ventilating and Air-Conditioning; C38 Refrigeration; D64
Expires
Jun 30, 2027
Bond
$25,000
Workers' comp
Insured to Jun 24, 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
$25,000American Contractors Indemnity Company, from Jan 1, 2023, continuous
Liability insurance
Not in the CSLB fileCheck with the board
Workers' comp
InsuredOmaha National Casualty Company, from Jun 24, 2026, to Jun 24, 2027

Who is on this license?

Responsible managing officer, CEO and president
Gregory C. LandersSince Jun 25, 2013

What work does this license cover?

Issued Jun 25, 2013.

What other licenses does this business hold?

Which other Los Angeles businesses hold B General Building?

HVAC Contractors in Los AngelesCalifornia HVAC contractorsGeneral Contractors in Los AngelesCalifornia general 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)