3021 E GARDI ST, Duarte, CA 91010, USA
Verify this license yourself at the California Contractors State License Board (CSLB).
Duarte sits in the San Gabriel Valley, where hot summers put heavy demand on air conditioning and cooler nights bring furnaces and heat pumps into regular use. Homes here often run equipment hard for much of the year, so reliable local service matters. Granillo David is an HVAC contractor based in Duarte, California, serving homeowners and property owners in the city and its surrounding neighborhoods.
Local market — Duarte
HVAC pros here
8
Have a website
13%
Cooling demand
1,399
Heating demand
1,290
Cooling/heating demand = annual degree days (NOAA). Electricity = state residential average (EIA).
The company's work covers the full range of residential and light commercial comfort needs. AC Services include diagnosing cooling faults, checking refrigerant levels, and repairing or replacing compressors and condensers. Heating Services and Furnace Services address ignition problems, burner and blower issues, and safety checks. Heat Pumps, Ductwork Services, and Thermostat Services round out the lineup, from sealing leaky ducts to programming and installing controls. For urgent breakdowns, Emergency HVAC service responds to no-cooling or no-heat calls, while Maintenance & Tune-up visits keep systems running efficiently between seasons.
Granillo David holds California state contractor license #841662 and has been licensed since 2004, giving it more than 22 years of experience in the trade. That record is a useful reference point for anyone verifying credentials through the state contractor registry before scheduling work.
Homeowners comparing local HVAC professionals should look for clear diagnoses, written estimates, and straightforward explanations of repair options. Granillo David welcomes that kind of comparison. Visitors to HVAC Service Fast can review its listed services and Duarte service area to see whether it fits their needs.
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