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Last Updated: February 25, 2025
On average, 55% of the energy used in American homes is for heating and cooling, according to the Department of Energy. It's important that the cooling and heating systems in your Costa Mesa home are functioning properly, so that you don't spend more than necessary.
We've assembled this guide to Costa Mesa's top HVAC companies to help you choose the best person for your job and get your system into top shape.

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

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

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

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

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

Our Rating
User Rating
Services Offered

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

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

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

Our Rating
User Rating
Reliable customer support
Informative resources
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 nearing the end of its lifespan, you may need to hire an HVAC contractor for maintenance or replacement. Look for these common signs that your system needs expert attention:
These HVAC red flags indicate that you should have your system evaluated. A local provider can complete an inspection, identify problems, and advise you whether you should repair or replace your HVAC unit.
What you spend on HVAC installation or maintenance is determined by your system type. Common HVAC unit styles include the following:
HVAC costs differ based on the services needed. HVAC systems are complicated and may need several types of maintenance. Costs for common jobs are as follows:
| HVAC Unit Type | Cost | |
|---|---|---|
| Split | $2,035-$5,187 | |
| Hybrid Split | $4,123-$7,596 | |
| Heat Pump | $3,193-$32,531 | |
| Packaged Heating and Air | $267-$445 |
HVAC upkeep is important, but can be expensive. Thankfully, there are steps homeowners can take to reduce wear and tear on their system and lower future maintenance needs.
| Service | Cost | |
|---|---|---|
| Filter Replacement | $67-$178 | |
| Condensor Cleaning | $1,336-$4,007 | |
| Thermostat Repair | $89-$223 | |
| Ductwork Cleaning | $427-$1,069 |
Knowing what makes a trustworthy HVAC company is crucial for a successful installation or repair. Hiring an experienced, credentialed HVAC contractor gives you confidence your system can provide reliable heating and air conditioning year-round.
Contact at least three HVAC providers for quotes. Explain the issues and have technicians visit to inspect your HVAC system if possible. Compare the companies' explanations, solutions, estimated costs, warranties, and timeframes. Avoid contractors that pressure you or demand payment upfront.
Look for an HVAC company that employs skilled technicians who have the necessary training and licenses. HVAC contractors in all states need to obtain a Section 608 Technician Certification from the Environmental Protection Agency (EPA). This certification is required for all contractors who "maintain, service, repair or dispose of equipment that could release refrigerants into the atmosphere." Contractors must pass an exam (the type of exam depends on the type of equipment they intend to work with) to be certified by the EPA. All other licensing requirements are handled at the state level.
HVAC contractors in California 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, and contractors with employees must also meet insurance requirements. Checking reviews on Yelp, the Better Business Bureau (BBB), Google Reviews, and similar sites can help your decision as well. Choose a provider with great reviews and reports of positive customer experiences.
Make sure you know the details of any project before starting. For HVAC repairs, have your provider list which parts require replacement and why. Confirm that your technician will clean and test the entire system after the repair to ensure that everything works. When getting a replacement, ask your contractor to explain the new HVAC system features, brand, energy efficiency, estimated installation time, and model. Before signing a contract, you should understand how your provider will size the system appropriately for your home and the price you'll pay.
Good HVAC companies offer warranties on repairs and equipment installations. The more complete the coverage, the better. Review warranty details between companies and pick the one that offers the best protection for a fair price.
Always get HVAC bids in writing before work begins. A thorough quote will cover costs for both materials and labor. Make sure that you agree to all terms before signing the contract.
Normally, your HVAC system should be inspected twice a year. After an inspection, your HVAC technician will tell you what, if any, services are needed. You should also have your system inspected and serviced if you notice any new issues, such as strange noises, leaks, or unusual smells. If you have ductwork in your home, it should be serviced every few years.
The best times to have an HVAC inspection are during the spring and fall. Technicians are generally less busy during these times, so it will be easier to get an appointment. This also helps get your system ready for the summer and winter, the times of the year when it sees the most use.
You can save energy during the summer by reducing the amount of power your HVAC system uses to keep your home cool. Set your thermostat as close to the outside temperature as you can, and avoid making drastic changes in temperature all at once. Keep your roof well-maintained and seal any window or door leaks to avoid letting cool air escape. Similarly, ensure that your attic is well ventilated to avoid trapping excess heat in your home.
Generally, whole-system HVAC installation or replacement takes between one and three days. Installing or replacing a furnace or air conditioning unit may take anywhere from a few hours up to two days. The exact amount of time will depend on factors like the size of your home, how easily accessible different sections are, and whether your technician discovers any problems.
For a 2,000-square-foot home, you'll want a furnace that's between 50,000 and 80,000 BTUs (British thermal units). In Costa Mesa, 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 between 2.5 and 5 tons of capacity. In Costa Mesa, you'll likely look for something on the higher end of this range. Generally, if your home is larger than 1,000 square feet, central air will be more effective than window air conditioning units.
Your HVAC company might have financing options via a third-party lender, or you may be able to obtain your own loan. It's smart to discuss payment options with your HVAC company and a financial advisor to make sure that you find the best option for you.
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