Mackamul’s Heating And Air Conditioning
- 6913 La Praix Street, Highland, CA 92346
- (909) 519-4976
- September 15, 2026
Precision One Services INC operates out of Beaumont in Riverside County and carries CSLB license #1075895, classification C10 — Electrical, C20 Warm-Air Heating, Ventilating and Air-Conditioning, C36 Plumbing. License status at the time of compiling this listing: active, with no suspension recorded.
HVAC contractors carry the C-20 classification, which covers equipment replacement, duct systems, and the airflow and combustion venting that make them work safely.
Working in the San Gorgonio Pass: Wind-driven dust and debris are constant, and they shorten the service life of exterior finishes, seals and filtration more quickly than in the valleys below.
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 #1075895 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 — Precision One Services INC 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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