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Last Updated: February 25, 2025
According to the Department of Energy, about 55% of the energy used in American homes is used for heating and cooling. This may not surprise you if you live in Boulder and spend all winter running your heat. The average resident spends $180 a month on their heating.
Explore our list of the top HVAC companies in Boulder to find the best one for you and your home. Our topic contractors can help you reduce your bills while still staying comfortable.

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

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

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

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

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

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

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

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

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

Our Rating
User Rating
Free quotes
Informative resources
Reliable customer support
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 isn't working correctly or suffering from a lot of wear and tear, you might need an HVAC contractor for maintenance or replacement. Look for these common indicators that your system needs professional attention:
If you notice any of the above, have a local HVAC technician inspect your system. They can diagnose problems and let you know whether repair or full HVAC replacement is the better solution.
What you spend on HVAC installation or maintenance is determined by your system type. Common HVAC unit styles include the following:
The cost of HVAC maintenance also varies depending on the kind of work you're having done. HVAC systems are complex and might require different kinds of maintenance. The cost of some common repairs is as follows:
| HVAC Unit Type | Cost | |
|---|---|---|
| Split | $2,008-$5,120 | |
| Hybrid Split | $4,069-$7,497 | |
| Heat Pump | $3,151-$32,106 | |
| Packaged Heating and Air | $264-$439 |
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 minimize progressive deterioration and reduce the frequency of breakdowns.
| Service | Cost | |
|---|---|---|
| Filter Replacement | $66-$176 | |
| Condensor Cleaning | $1,318-$3,955 | |
| Thermostat Repair | $88-$220 | |
| Ductwork Cleaning | $422-$1,055 |
Knowing what to look for in an HVAC company is crucial for a successful project. Partnering with an experienced, licensed contractor can offer you peace of mind and make sure your system provides reliable air conditioning and heating for your home.
Contact at least three HVAC companies for quotes. Describe the issues and have technicians visit to inspect your system if possible. Compare the providers' explanations, solutions, estimated costs, warranties, and timeframes. Avoid companies that pressure you or demand payment upfront.
When looking for an HVAC company, choose one with technicians that have the right training, licenses, and experience. In all states, HVAC contractors need to obtain a Section 608 Technician Certification from the Environmental Protection Agency (EPA). This certification is mandatory for any individual who helps "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 by the state.
The state of Colorado doesn't have state-level HVAC contractor licensing requirements; however, anyone who operates an HVAC business is required to have a Colorado business license, plus insurance. It's a good idea to check with your municipal government to find out if there are any local licensing requirements for HVAC contractors. Additionally, contractors that do electrical or plumbing work in addition to HVAC work must register with the State Plumbing Board or the Colorado Electrical Board, respectively. You should also look at reviews and complaints on sites like the Better Business Bureau (BBB), Yelp, and Google Reviews. Pick a company with glowing reviews and reports of great customer experiences.
Always make sure you know what a company’s process is like. When getting HVAC repairs, ask your provider to explain which parts need replacement and explain why. Confirm that your technician will clean and test your system after finishing the work to verify proper operation. When replacing your HVAC system, ask the installation company to provide details on the new features, estimated installation time, energy efficiency, model, and brand. Before signing a contract, make sure you understand how your provider will properly size the new unit for your home and what the cost will be.
Reliable HVAC companies provide warranties for their services. The broader the coverage, the better, so make sure to review warranties between providers. Choose the one that gives you the most coverage at a reasonable cost.
Always get quotes for HVAC service in writing before work begins. A comprehensive quote should cover both materials and labor. Make sure you review all terms before signing a contract.
Typically, your HVAC system should be inspected twice a year. After that inspection, your technician will tell you what, if any, services are needed. You should also call a technician if you start to notice any issues, like leaks, unusual smells, or strange noises. If your home has ductwork, it should be serviced every few years.
The best times of the year to have your HVAC system inspected are the spring and fall. Technicians tend to be less busy during these times, so it will be easier to get an appointment. This also ensures that your system is ready for the summer and winter, which is when it normally sees the most use.
You can save energy throughout the year by reducing the amount of work it takes for your HVAC system to maintain your home's temperature. Always keep your thermostat as close to the outside temperature as possible, and try to adjust it only a few degrees at a time. You might also consider getting a smart thermostat.
Generally, HVAC installation or replacement takes between one and three days for the entire system. Installing or replacing an air conditioning unit or a furnace takes anywhere from about half a day up to two days. The exact amount of time will depend on factors like the size of your house, how easily accessible different areas are, and whether your technician finds 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 Boulder, you'll likely look for a furnace on the higher end of or above 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 general, if your home is larger than 1,000 square feet, central air will be more effective than window air conditioning units.
Your HVAC company may have financing options via a third-party lender, or you might be able to obtain a loan on your own. It's a good idea to discuss payment options with your HVAC company and a financial advisor to make sure that you find the best option for you.
There are a number of ways you can make your HVAC system more energy-efficient:
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