Dewildt Environmental Inc

Dewildt Environmental Inc of Oceanside holds California license 749748 (C20 Warm-Air Heating, Ventilating and Air-Conditioning, C38 Refrigeration). The CSLB file dated Oct 30, 2026 lists it as active.¹ It expires May 31, 2028.

Licensed 28 years, longer than 93% of 31 active Oceanside HVAC contractors.

Active

Dewildt Environmental Inc, Oceanside

License: 749748
Class: C20 Warm-Air Heating, Ventilating and Air-Conditioning; C38 Refrigeration
Expires: May 31, 2028
Bond: $25,000
Workers' comp: Insured to Jan 23, 2027

CSLB file dated Oct 30, 2026

From the CSLB file dated Oct 30, 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 30, 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: InsuredTechnology Insurance Company Inc, from Jan 23, 2026, to Jan 23, 2027

Who is on this license?

Responsible managing officer, CEO and president: Samuel J. DewildtSince May 20, 1998

What work does this license cover?

Issued May 20, 1998.

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

Pacific Coast Heating & Air Conditioning IncLicensed since 1997
H V A C Mechanalysis IncLicensed since 2002
American Plumbing Heating & Air ConditioningLicensed since 2005
WR Robbins CompanyLicensed since 2007
Ag Coastal Heating And Air LLCLicensed since 2026

California HVAC contractors

What should you check before hiring?

What to ask before you hire

Get the license number in writing. The name on the license should match the name on your contract and invoice.
Check the class covers the job. A license for one trade doesn't cover another. California license classes
Ask for a certificate of insurance sent to you by the insurance agent, not handed over by the contractor. How to read a COI
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.
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

Don't sign or pay a deposit until the CSLB shows the license active again.
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.
If work has started, hold further payments, keep the contract, receipts and photos, and file a complaint with Contractors State License Board (CSLB).
Check another contractor. California license lookup

Sources

CSLB License Master (cslb.ca.gov, Oct 30, 2026)
Contractors State License Board (CSLB)