Serving San Francisco Bay Area | Santa Clara County
    Top Appliance Repair
    Foster City, CA · San Mateo County

    Air Conditioner Repair in Foster City, CA — Same-Day Service

    Need air conditioner repair in Foster City? Our factory-trained HVAC techs service all AC brands across San Mateo County. From refrigerant leaks to compressor failures, we restore your cooling fast with same-day appointments.

    (510) 930-0404
    4.9 from 1,100+ reviews 35 min response 90-day guarantee

    Air Conditioner Repair Cost in Foster City

    Typical Cost

    $150–$600

    Parts & labor included

    Avg. Repair Time

    1–3 hours

    Most repairs same visit

    Diagnostic Fee

    $89

    Waived with repair

    Common Air Conditioner Repair Problems in Foster City

    AC not cooling properly

    Low refrigerant, a dirty condenser coil, or a failing compressor can reduce cooling. We'll diagnose the root cause and restore comfort.

    AC blowing warm air

    Often caused by low refrigerant, a faulty compressor, or thermostat issues. We'll identify and fix the problem same day.

    AC making loud noises

    Banging, squealing, or grinding sounds indicate fan motor, compressor, or loose component issues. We'll pinpoint and repair the source.

    AC unit leaking water

    Clogged condensate drain lines or a frozen evaporator coil are common causes. We'll clear the blockage and prevent water damage.

    AC short cycling (turning on and off)

    This can indicate an oversized unit, refrigerant leak, or electrical issue. We'll diagnose the cycling problem.

    Thermostat not controlling AC

    Faulty wiring, a dead thermostat, or compatibility issues can prevent proper control. We'll repair or replace it.

    Why Choose Top Appliance Repair in Foster City?

    Same-day & next-day appointments available
    Licensed & insured — CA License #49404
    90-day parts and labor guarantee
    Upfront pricing — no hidden fees
    Factory-trained, certified technicians
    OEM parts carried on every truck
    4.9★ rating from 1,100+ verified reviews
    Locally owned & operated since 2016

    Brands We Repair in Foster City

    Our technicians are factory-trained to service all major appliance brands.

    Samsung repair in Foster CitySamsung
    LG repair in Foster CityLG
    Whirlpool repair in Foster CityWhirlpool
    GE repair in Foster CityGE
    Maytag repair in Foster CityMaytag
    KitchenAid repair in Foster CityKitchenAid
    Frigidaire repair in Foster CityFrigidaire
    Bosch repair in Foster CityBosch
    Sub-Zero repair in Foster CitySub-Zero
    Viking repair in Foster CityViking
    Thermador repair in Foster CityThermador
    Miele repair in Foster CityMiele
    Electrolux repair in Foster CityElectrolux
    JennAir repair in Foster CityJennAir

    Air Conditioner Repair FAQs — Foster City

    Manufacturer Resources

    Energy Star AC Guide Carrier AC Support Energy.gov Cooling Tips

    Need Appliance Repair?
    Call Us Today!

    Our certified technicians are ready to help. Same-day and next-day appointments available.

    (510) 930-0404