A broken AC can be a headache in the middle of summer. An AC pro in Foster City, California, can resolve your issue easily.

We recommend hiring a licensed and insured AC repair company rather than attempt to fix the problem on your own.

AC repair pros are trained to safely perform electrical work and work with refrigerants, which are toxic materials that require a license to handle.

Your AC unit is a key home system, especially during the summer. When you need repairs, find the best AC pro for you by reviewing quotes from multiple providers.

Find the best local AC repair company for you in Foster City

Look for AC repair companies in Foster City with at least 3.5 out of 5 stars on Google Reviews and a good rating on Better Business Bureau (BBB). Use the filters below to help you find the right company for your needs.



This provider is within 5 miles of this city


ResidentialAC InstallationMaintenanceFurnace InstallationFiltration

1160 Industrial Rd STE 2, San Carlos, CA 94070

(650) 596-2920

Bodnar Heating & Air Conditioning, Inc. Logo

Bodnar Heating & Air Conditioning, Inc.

MaintenanceAC RepairFurnace InstallationAC InstallationSmart Home IntegrationResidential

1251 Fifth Ave, Redwood City, CA 94063

(650) 368-4408

All About Air Logo

All About Air

ResidentialInspectionAC RepairAC InstallationFurnace InstallationFiltrationDuctlessIndoor Air QualityVentilationMaintenance

2415 Radley Ct Suite 8, Hayward, CA 94545

(510) 538-2247

Bay Area Climate Control Logo

Bay Area Climate Control

DuctlessAC RepairVentilationFurnace InstallationAC InstallationResidentialFurnace RepairMaintenance

1930 W Winton Ave # 4, Hayward, CA 94545

(510) 477-6793

Work Atlas Heating Logo

Work Atlas Heating

AC InstallationMaintenanceIndoor Air QualityVentilationFurnace InstallationResidential

407 Cabot Rd, South San Francisco, CA 94080

(650) 873-7000

JC HVAC Refrigeration & Appliance Logo

JC HVAC Refrigeration & Appliance

This provider is within 5 miles of this city


Indoor Air QualityFurnace RepairResidentialAC RepairAC InstallationVentilationEmergency ServicesMaintenanceFurnace Installation

1017 Norton St, San Mateo, CA 94401

(650) 444-5210

Techpro Builders

This provider is within 5 miles of this city


MaintenanceAC InstallationFurnace InstallationResidential

71 Glenn Way # 6, San Carlos, CA 94070

(650) 360-9337

Finest Heating & Air

ResidentialIndoor Air QualityFurnace RepairAC RepairAC InstallationMaintenanceDuctlessFurnace Installation

2100 Geng Rd Suite 210, Palo Alto, CA 94303

(650) 223-2028

Absolute Air Solutions Logo

Absolute Air Solutions

ResidentialZoning SystemsMaintenanceAC InstallationFurnace Installation

26349 Regal Ave, Hayward, CA 94544

(510) 901-7166

Carol Flynn Heating & Cooling Logo

Carol Flynn Heating & Cooling

AC RepairInspectionFurnace InstallationMaintenanceVentilationResidentialDuct CleaningIndoor Air Quality

200 Valley Dr Ste 50, Brisbane, CA 94005

(650) 697-1535

What are signs your AC unit needs to be repaired?

Here are some signs your AC unit needs to be repaired:

  • Rising energy bills: Consistently higher or rising energy bills may indicate your AC is using more electricity than usual. The typical local spending on energy is $128 per month, based on data from the Department of Energy (DOE) and U.S. Energy Information Administration (EIA).
  • Inconsistent temperatures: Your home’s AC unit is meant to provide even cooling in all rooms. Big temperature swings could indicate your HVAC system needs repairs.
  • The internal temperature doesn’t match the thermostat: Discrepancies between your home’s actual temperature and the thermostat’s means there may be a problem with your AC or thermostat.
  • Leaks around the AC unit: Moisture around your AC is a problem that warrants professional care. It could be caused by leaking refrigerant or water from a broken or blocked tube.
  • Weird noises: Loud or unusual noises, such as screeching, bubbling or clicking, can signal a larger issue.
  • Strange odors: An AC will typically let off a smell after months of being unused, but it’s unusual for an in-use AC to develop a sudden weird odor.
  • Weak airflow: When your AC has poor or weak airflow, that’s a sign your AC isn’t working efficiently or the duct or vent is blocked.
  • Warm air: Warm air indicates a potential problem with your ductwork or that your system’s compressor is low on refrigerant.
  • Frequent cycles: AC systems go through regular cooling cycles. Your system should turn on more frequently on warmer days, but it shouldn’t cycle on and off constantly.

How do you choose the best AC repair company in Foster City?

Consider these factors when looking for the best AC repair company for you in Foster City.

Make sure the company is licensed in California

Only book AC repair companies with proper licensing and insurance. The California Contractors State License Board requires HVAC contractors to maintain proper licensing. The Environmental Protection Agency (EPA) requires all HVAC pros who work with refrigerants to be certified. Other requirements include worker’s compensation insurance and a cash bond or surety.

Look for national accreditations

While not required, there are national accreditations for AC pros, such as the American Society of Heating, Refrigerating, and Air Conditioning Engineers (ASHRAE) and the Air Conditioning Contractors of America (ACCA). Having a certification from one of these professional associations offers proof of a technician’s knowledge and skill in the industry.

Get a free estimate

Most AC repair companies provide free estimates in which a professional visits your home to diagnose the issue, suggests solutions and gives you a quote. The technician should thoroughly inspect your AC system before diagnosing the issue.

Compare costs

Request detailed estimates from several companies. Comparing several quotes gives you a sense of the rates in your area. Use caution with providers that have disproportionately high or low rates.

Assess experience

Make sure the technician has experience repairing your type of AC system. HVAC pros typically have experience with many AC systems, but some specialize in particular brands.

Read reviews

Your family and friends may have recommendations for AC repair companies in your area. Regardless, make sure to look up each company’s online reviews.

Feedback helps you get a sense of what kind of customer service and work quality you can expect from the company. Look for consistently bad reviews or a recent rise in negative feedback.

What are popular types of AC units in Foster City?

These are the most common AC unit types in Foster City and the homes they work best for:

  • Central: Standard central AC units are reliable and designed to efficiently cool entire homes.
  • Ductless mini-split: The ductless mini-split offers zoned cooling without the need for ductwork.
  • Hybrid: Hybrid systems combine heat pumps with furnaces to provide both heating and cooling.
  • Heat pumps: More Foster City homeowners are opting for heat pumps, which are more economical in warmer climates.
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Our methodology for selecting AC repair companies

The Homefront Local team employs a proprietary scoring algorithm that evaluates companies based on key factors you value, such as average customer review ratings and trustworthiness indicators. Our method for determining trust involves a comparative analysis of the number of reviews a company receives compared to its local competitors. This leads to companies that have earned more trust from your local community being awarded a higher score.

Contact us at feedback@homefront.usatoday.com is you have questions or feedback on this article

Editorial note: The name “Homefront” refers to the alliance between USA TODAY and Home Solutions that publishes review, comparison, and informational articles designed to help USA TODAY readers make smarter purchasing and investment decisions about their home. Under the alliance, Homefront provides and publishes research and articles about home service and home improvement topics. Homefront has an affiliate disclosure policy. The opinions, analyses, reviews or recommendations expressed in this article are those of the Homefront editorial staff alone (see About Homefront). Homefront adheres to strict editorial integrity standards. The information is believed to be accurate as of the publish date, but always check the provider’s website for the most current information. Go back to top

Our editors may use AI as an input tool to tailor information in local markets. All content goes through a rigorous research and review process led by our team of writers and editors.

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