Mackamul’s Heating And Air Conditioning
- 6913 La Praix Street, Highland, CA 92346
- (909) 519-4976
- September 15, 2026
Custom Homes Construction is a licensed California contractor based in Ontario, San Bernardino County, holding CSLB license #1045173 under classification B — General Building, C20 Warm-Air Heating, Ventilating and Air-Conditioning, C38 Refrigeration. The license was active and clear when this listing was compiled.
The C-20 classification covers complete HVAC systems: heating and cooling equipment, ducting, and the controls and venting that go with them.
Working in the Inland Empire: The region sits between the San Andreas and San Jacinto fault systems, so seismic requirements are woven through the building code here in ways they are not everywhere.
Before you hire any hvac or air conditioning contractor: Ask whether the duct system is being tested. California’s Title 24 energy code requires duct leakage testing on many change-outs, and leaky ducts waste a large share of what the equipment produces.
License status can change at any time. Confirm license #1045173 is current, and check bond and workers’ compensation coverage, using the CSLB license lookup before signing a contract or paying a deposit.
This profile was compiled from California State License Board public records and is unclaimed — Custom Homes Construction has not added its own details. Are you the owner? Claim this listing to add photos, services and a description of your work, or contact us to have it removed.
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