Mackamul’s Heating And Air Conditioning
- 6913 La Praix Street, Highland, CA 92346
- (909) 519-4976
- September 15, 2026
M S B Construction operates out of Riverside in Riverside County and carries CSLB license #746882, classification A — General Engineering, B General Building, C8 Concrete, C10 Electrical, C13 Fencing, C17 Glazing, C20 Warm-Air Heating, Ventilating and Air-Conditioning, C21 Building Moving/Demolition, C27 Landscaping, C36 Plumbing, C53 Swimming Pool, C54 Ceramic and Mosaic Tile, D28 Doors, Gates and Activating Devices. The license was active and clear when this listing was compiled.
A C-20 license covers warm-air heating, ventilating and air-conditioning work — installing and servicing furnaces, air handlers, condensers, and the ductwork that distributes conditioned air.
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: Get the SEER2 rating and the permit status in writing. Equipment changes generally require a permit, and an unpermitted install can surface later at sale.
License status can change at any time. Confirm license #746882 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 — M S B 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.
There are no reviews yet.