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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.

Our Rating
User Rating
Prompt service delivery
Clear pricing policy
Informative resources
Reliable customer support
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Services Offered

Our Rating
User Rating
Prompt service delivery
Free quotes
Clear pricing policy
Reliable customer support
Services Offered

Our Rating
User Rating
Reliable customer support
Clear pricing policy
Prompt service delivery
Informative resources
Free quotes
Services Offered

Our Rating
User Rating
Free quotes
Reliable customer support
Informative resources
Clear pricing policy
Services Offered

Our Rating
User Rating
Clear pricing policy
Informative resources
Reliable customer support
Free quotes
Services Offered

Our Rating
User Rating
Reliable customer support
Informative resources
Clear pricing policy
Services Offered

Our Rating
User Rating
Reliable customer support
Prompt service delivery
Free quotes
Informative resources
Clear pricing policy
Services Offered

Our Rating
User Rating
Prompt service delivery
Reliable customer support
Clear pricing policy
Free quotes
Informative resources
Services Offered

Our Rating
User Rating
Clear pricing policy
Informative resources
Free quote
Reliable customer support
Services Offered

Our Rating
User Rating
Informative resources
Reliable customer support
Free quotes
Clear pricing policy
Services Offered
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:
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:
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.
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:
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 Type | Cost | |
|---|---|---|
| Split | $2,044-$5,211 | |
| Hybrid Split | $4,142-$7,632 | |
| Heat Pump | $3,207-$32,682 | |
| Packaged Heating and Air | $268-$447 |
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.
| Service | Cost | |
|---|---|---|
| Filter Replacement | $67-$179 | |
| Condensor Cleaning | $1,342-$4,026 | |
| Thermostat Repair | $89-$224 | |
| Ductwork Cleaning | $429-$1,074 |
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.
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.
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.
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.
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.
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.
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:
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