10 Best HVAC Companies in San Francisco, CA

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Last Updated: February 25, 2025

If you're like the average American, over half of your energy bill (55%, according to the Department of Energy) goes toward heating and cooling your home. It's important to make sure the temperature control systems in your San Francisco home are functioning properly, so you can avoid spending more than necessary.

A talented HVAC contractor can get your system into its best shape ever, letting you keep your home comfortable while still saving money. That's why we've put together this guide to the best HVAC companies in San Francisco.

Top 10 Best HVAC Companies in San Francisco

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Precision Air Solutions

Precision Air Solutions Logo

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1090 Adams St Suite A-1, Benicia, CA 94510 (707) 741-1993 precisionhvacco.com

Prompt service delivery

Clear pricing policy

Informative resources

Reliable customer support

Free quotes

Services Offered

Ductless
Furnace installation
Ventilation
Furnace repair
Ac repair
Maintenance
Ac installation
Emergency services
Boiler installation
Filtration
Inspection
Indoor air quality

Baker's Heating and Air Conditioning

Baker's Heating and Air Conditioning Logo

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User Rating

751 Hoffman Ln, Brentwood, CA 94513 (925) 420-0400 bakerhvac.com

Prompt service delivery

Free quotes

Clear pricing policy

Reliable customer support

Services Offered

Indoor air quality
Ac installation
Furnace repair
Inspection
Emergency services
Ventilation
Furnace installation
Ac repair
Maintenance
Ductless

Comfort Energy, Inc.

Comfort Energy, Inc. Logo

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1465 N Milpitas Blvd, Milpitas, CA 95035 (408) 560-4050 comfortenergy.com

Reliable customer support

Clear pricing policy

Prompt service delivery

Informative resources

Free quotes

Services Offered

Indoor air quality
Duct cleaning
Maintenance
Boiler installation
Ac repair
Ac installation
Furnace installation
Ductless
Filtration
Furnace repair
Boiler repair

Contra Costa Heating & Air Conditioning

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14670 Wicks Blvd, San Leandro, CA 94577 (510) 343-9841 contracostaheating.com

Free quotes

Reliable customer support

Informative resources

Clear pricing policy

Services Offered

Ductless
Zoning systems
Furnace installation
Inspection
Ac repair
Emergency services
Furnace repair
Ventilation
Ac installation
Indoor air quality
Maintenance
Filtration

Ariston Heating and Cooling

Ariston Heating and Cooling Logo

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111 Center Ave Suite M, Pacheco, CA 94553 (925) 421-0888 aristonheatingandcooling.com

Clear pricing policy

Informative resources

Reliable customer support

Free quotes

Services Offered

Furnace repair
Ac repair
Indoor air quality
Smart home integration
Furnace installation
Ac installation
Ductless
Maintenance
Filtration

Clean Air HVAC

Clean Air HVAC Logo

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User Rating

428 N Buchanan Cir #1, Pacheco, CA 94553 (925) 689-7017 cahvac.com

Reliable customer support

Informative resources

Clear pricing policy

Services Offered

Furnace installation
Filtration
Ac installation
Ductless
Maintenance
Ac repair
Boiler installation
Ventilation
Furnace repair
Emergency services
Indoor air quality
Zoning systems

AC Heating and Cooling Service Inc.

AC Heating and Cooling Service Inc. Logo

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User Rating

945 Taraval St Suite 177, San Francisco, CA 94116 (415) 333-9903 acheatingandair.net

Reliable customer support

Prompt service delivery

Free quotes

Informative resources

Clear pricing policy

Services Offered

Emergency services
Inspection
Maintenance
Filtration
Duct cleaning
Ac repair
Ac installation
Ventilation
Indoor air quality
Furnace repair
Furnace installation

AC Heating & Cooling Services Inc

AC Heating & Cooling Services Inc Logo

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User Rating

3500 Clayton Rd, Concord, CA 94519 (925) 521-1807 acheatingandair.net

Prompt service delivery

Reliable customer support

Clear pricing policy

Free quotes

Informative resources

Services Offered

Ventilation
Furnace repair
Filtration
Inspection
Ac installation
Ac repair
Maintenance
Indoor air quality
Furnace installation
Duct cleaning
Emergency services

Carol Flynn Heating & Cooling

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Our Rating

User Rating

200 Valley Dr Ste 50, Brisbane, CA 94005 (650) 697-1535 carolflynn.com

Clear pricing policy

Informative resources

Free quote

Reliable customer support

Services Offered

Indoor air quality
Ventilation
Duct cleaning
Furnace installation
Ductless
Ac repair
Maintenance
Ac installation
Inspection

Hassler Heating and Air Conditioning, LLC

Hassler Heating and Air Conditioning, LLC Logo

Our Rating

User Rating

1537 S 56th St, El Cerrito, CA 94530 (510) 296-3231 hasslerheating.com

Informative resources

Reliable customer support

Free quotes

Clear pricing policy

Services Offered

Ductless
Filtration
Ac installation
Inspection
Ac repair
Ventilation
Maintenance
Indoor air quality
Furnace repair
Furnace installation
Today's Homeowner Ranking Methodology

Today's Homeowner looks at dozens of datapoints on hvac companies to come up with our data-driven rankings. It's not possible for a company to pay for preferential treatment in our rankings. We look at the following key factors in determining who should top our list:

  • Company Experience
  • Real User Reviews
  • Company Reputation
  • Accreditations and Licenses
  • Service Area
  • Customer Service
Have questions about our methodology or company ratings? Reach out to FindAPro@TodaysHomeowner.com.

Signs You May Need HVAC Repair or Replacement

If your home's HVAC system is malfunctioning or getting old, you may need to hire an HVAC contractor for repairs or replacement. Look for these common signs that your system needs expert attention:

  • Poor air circulation or uneven heating/cooling
  • Cracking, corrosion, or rust
  • Refrigerant leaks
  • Higher than normal energy bills
  • Odd noises when turning on
  • Frequent breakdowns and need for repairs
  • Temperature control issues or thermostat malfunctions
  • An HVAC system that's over 15 years old

If you notice any of these HVAC red flags, your system evaluated. A local company can complete an inspection, diagnose problems, and advise you whether you should repair or replace your HVAC unit.

Cost of HVAC Installation and Maintenance in San Francisco

The price of HVAC installation or maintenance will differ depending on the kind of unit you have. Common kinds of HVAC units include the following:

  • Split or mini-split: Homes without ductwork for central heating and cooling frequently have split or mini-split HVAC systems. These systems consist of indoor units in each room to regulate temperature. These indoor units connect to an outdoor unit.
  • Hybrid split: A hybrid split HVAC system functions very similarly to a standard split system. It has the benefit of being able to utilize either electricity or gas for power.
  • Heat pump: Heat pumps move warm and cool air between your home and the outside. These systems don't generate their own heat or AC, so they work better in moderate climates.
  • Packaged heating and air: Packaged HVAC systems work best in smaller houses. They consist of a single combined heating and air conditioning unit, commonly located in an attic or basement. This unit is typically small, energy-efficient, and straightforward to maintain.

HVAC maintenance prices vary based on the specific services needed. HVAC systems can be complex and potentially require several different services. Costs for typical jobs are as follows:

HVAC Unit TypeCost
Split$2,044-$5,211
Hybrid Split$4,142-$7,632
Heat Pump$3,207-$32,682
Packaged Heating and Air$268-$447

Ways to Save Money on HVAC Costs

It’s important to complete repairs or full-system HVAC replacements as needed, though they can be expensive. The good news is that homeowners have ways to reduce gradual wear and tear and reduce the frequency of breakdowns.

  • Keep your system clean. Regularly cleaning indoor evaporator coil, grills, ductwork, and condenser fan blades helps keep your HVAC system running efficiently and reduces your risk of mold. The National Air Duct Cleaners Association advises cleaning your heating and cooling system when it starts to look dirty.
  • Monitor for potential problems. Keeping a close eye on the efficiency of your HVAC system — for instance by reviewing your thermostat settings and energy bills — helps you identify and fix problems before they get out of hand.
  • Change the position of your blinds seasonally. Leaving your blinds open during the winter helps warm your home with passive solar heating. Closing the blinds in warmer seasons helps prevent some heat from getting inside. Doing both helps decrease the demand on your HVAC.
  • Change filters regularly. Replacing or cleaning your air filters every 30–90 days helps air flow smoothly through your system. Also try to keep debris away from the outside areas of your HVAC system as much as possible.
ServiceCost
Filter Replacement$67-$179
Condensor Cleaning$1,342-$4,026
Thermostat Repair$89-$224
Ductwork Cleaning$429-$1,074

How To Choose a Local HVAC Company

Knowing the right things to look for in an HVAC company is key for a smooth installation or repair. Established providers with certified technicians can offer assurance your HVAC system will deliver consistent heating and cooling year-round.

Compare Multiple Bids

Contact at least three HVAC companies for quotes. Describe the issues and have technicians visit to inspect your HVAC system if possible. Compare the companies' explanations, solutions, estimated costs, timeframes, and warranties. Avoid contractors that pressure you or demand payment upfront.

Check Credentials

It's important to choose an HVAC company that employs technicians with the proper qualifications and expertise. HVAC contractors in all states have federal requirements set by the Environmental Protection Agency (EPA). To obtain the EPA Section 608 Technician Certification, contractors must pass an exam (the type of exam depends on what kind of equipment they plan to work with). Section 608 certification is required for all technicians who "maintain, service, repair or dispose of equipment that could release refrigerants into the atmosphere." All other licensing requirements are handled by the state.

In California, HVAC contractors must be licensed by the Department of Consumer Affairs Contractors State License Board (CSLB). The CSLB considers HVAC contractors to be specialty contractors. All contractors are required to have four years of experience and to be bonded. Contractors with employees must also meet insurance requirements. You should also look at a company's reviews and complaints on sites such as the Better Business Bureau (BBB), Yelp, and Google Reviews. Pick a company with glowing feedback and stories of satisfied customers.

Understand Work Details

Make sure you understand the details of your project before starting. When getting HVAC repairs, have your provider list which parts require replacement and why. Confirm that your technician will clean and test the system after the repair to verify that everything works. When replacing your HVAC, have the contractor explain the new brand, model, estimated installation time, energy efficiency, and features. Before work starts, be sure you understand the process your provider will use to size the new HVAC system appropriately for your home and what the price will be.

Compare Warranties

A trustworthy HVAC company will back its repair services and installations with a warranty. The longer and more comprehensive the warranty coverage, the better. Carefully review the fine print for each contractor and choose the provider that offers the most protection at a reasonable price.

Get Quote in Writing

Always get estimates for HVAC service in writing before work begins. A comprehensive quote should cover both labor and materials. Make sure you agree to all terms before signing a contract.

Frequently Asked Questions About HVAC in San Francisco, CA

Normally, you should have your HVAC system inspected twice a year. After that inspection, your technician will tell you what services are needed. You should also have your system inspected and serviced if you notice any new issues, like leaks, unusual smells, or strange noises. If you have ductwork in your home, it should be serviced every few years.

The best times to have your HVAC system inspected are the spring and fall. Technicians are often less busy during these times, making it easier to get an appointment. This also ensures that your system is ready for the summer and winter, the times of the year when it gets the most use.

You can save energy throughout the year by reducing the amount of work it takes for your HVAC system to maintain the temperature of your home. Always keep your thermostat as close to the outside temperature as possible, and try to adjust it only a few degrees at once. You may also consider a smart thermostat.

Generally, whole-system HVAC installation or replacement takes one to three days. Installing or replacing a furnace or air conditioning unit can take as little as half a day or as much as two days. The exact amount of time will vary depending on factors like the size of your house, how easily accessible different areas are, and whether your technician discovers any problems.

For a 2,000-square-foot home, you should look for a furnace that's between 50,000 and 80,000 BTUs (British thermal units). In San Francisco, you may be able to make do with a furnace on the lower end of this range.

For a 2,000-square-foot home, you'll also want to look for an air conditioning unit with around 2.5 to 5 tons of capacity. Usually, if your home is larger than 1,000 square feet, central air will be more effective than window air conditioning units.

Typically, HVAC financing is through a third-party lender. If your HVAC company doesn't offer financing, you could consider taking out your own loan. Be sure to speak with a financial advisor and your HVAC company to learn what options are available and appropriate for your situation.

There are several ways you can make your HVAC system more energy-efficient:

  • Keep your air ducts clean and change or clean your air filters on a regular basis.
  • Schedule regular inspections to take care of issues as they come up.
  • Keep your attic well-ventilated and make sure all doors and windows are well-sealed.
  • Install a smart thermostat. If you don't want to or can't buy one, try to keep your inside temperature as close to the outside temperature as you can.
  • When you need to replace part of your HVAC system, explore Energy Star-certified or other environmentally friendly options.

Other San Francisco, CA Home Services

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