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William's Heating

No ratings collected yet San Francisco, California

8 MADDUX AVE, San Francisco, CA 94124, USA

License checked License #766335 27 yrs experience

Verify this license yourself at the California Contractors State License Board (CSLB).

(415) 518-3675
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When San Francisco homeowners search for AC Services, they often have a specific problem in mind: a unit that will not cool a bedroom, a warm office that never reaches the set point, or a system that cycles on and off without warning. Others are planning ahead and want a technician who can review an older system before summer. Either way, they want clear answers, honest recommendations, and work done right the first time.

Local market — San Francisco

HVAC pros here

218

Have a website

56%

Cooling demand

113

Heating demand

2,909

Cooling/heating demand = annual degree days (NOAA). Electricity = state residential average (EIA).

Services Offered

AC Services in San Francisco Heating Services in San Francisco Ductwork Services in San Francisco Heat Pumps in San Francisco Furnace Services in San Francisco Thermostat Services in San Francisco Emergency HVAC in San Francisco Maintenance & Tune-up in San Francisco

Service Area

San Francisco, California All of California

Location

About William's Heating

William's Heating provides AC Services, Heating Services, Ductwork Services, Heat Pumps, Furnace Services, Thermostat Services, Emergency HVAC, and Maintenance & Tune-up. Cooling visits can include checking refrigerant charge and electrical components, cleaning coils, and clearing condensate drains. Ductwork inspections look for leaks and loose connections, while furnace work covers burner and heat exchanger checks. Heat pump service addresses both heating and cooling modes, and thermostat installation and programming help households keep runtimes steady. Scheduled tune-ups catch small faults before they turn into breakdowns.

William's Heating holds California contractor license #766335 and has been licensed since 1999, bringing more than 27 years of experience in the trade. The company serves San Francisco, where older homes, narrow stairwells, and shared buildings can make duct routing and equipment access more complicated than they appear on paper. Local familiarity matters when a technician needs to plan around those limits.

Anyone comparing local pros should ask for a written estimate, confirm the license number, and request a plain explanation of what needs fixing and why. William's Heating welcomes those questions. To compare more HVAC contractor options in the area, browse the listings on HVAC Service Fast.

Frequently Asked Questions

What services does William's Heating offer?
William's Heating offers AC Services, Heating Services, Ductwork Services, Heat Pumps, Furnace Services, Thermostat Services, Emergency HVAC, and Maintenance & Tune-up. Contact the company directly to confirm what it can address for your system.
Which areas does William's Heating serve?
William's Heating serves San Francisco, California. If you are outside the city, check with the company before scheduling to confirm coverage.
How do I choose a licensed, insured HVAC contractor in San Francisco?
Start by searching for an HVAC contractor near me and confirming the license number with the California state contractor registry. Ask whether the contractor carries liability and workers' compensation insurance, and request proof in writing.
What should I check before hiring an HVAC professional?
Ask for a written estimate that itemizes parts, labor, and any warranty terms. Compare at least two quotes and make sure the technician explains the problem and the recommended fix in plain language.
What are the signs it is time to call an HVAC professional?
Call a professional if your system stops heating or cooling, makes grinding or banging noises, produces uneven temperatures, or causes a sudden rise in energy bills. Gas odors, a furnace that shuts off repeatedly, or a unit that trips breakers also call for prompt service.

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