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Last Updated: February 25, 2025
If you're like the average American, more than half of your energy bill (55%, according to the U.S. Department of Energy) goes toward heating and cooling. In Chattanooga, you're probably looking to reduce your energy expenses and save money on your bills.
Our list of Chattanooga's top HVAC companies can help you save money by getting your HVAC system installed, repaired or replaced for a fair price by a skilled worker.

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

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

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

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

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

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

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

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

Our Rating
User Rating
Reliable customer support
Services Offered

Our Rating
User Rating
Free quotes
Reliable customer support
Informative resources
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 HVAC system is having issues or getting old, it likely needs repairs or replacement from an HVAC company. Watch for these signs your system needs service:
Book an inspection if you notice any of these problems. A local technician can inspect your system, detect problems, and decide whether you need to fix or replace your HVAC.
HVAC installation or maintenance costs vary depending on your system. Common HVAC unit varieties include the following:
The price of HVAC maintenance also varies depending on what kind of work being done. HVAC systems are complicated and may require different kinds of maintenance. The prices of some common jobs are as follows:
| HVAC Unit Type | Cost | |
|---|---|---|
| Split | $1,911-$4,873 | |
| Hybrid Split | $3,873-$7,135 | |
| Heat Pump | $2,999-$30,557 | |
| Packaged Heating and Air | $251-$418 |
It’s important to take care of HVAC repairs and replacements when they are required, 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 | $63-$167 | |
| Condensor Cleaning | $1,255-$3,764 | |
| Thermostat Repair | $84-$209 | |
| Ductwork Cleaning | $402-$1,004 |
Knowing what to look for in an HVAC company is crucial for a successful project. Look for an experienced, licensed contractor that can offer you peace of mind and ensure your system provides reliable air conditioning and heating for your home.
Request estimates from at least three HVAC providers. Explain your issues and ask if technicians can inspect your system in person. Compare each provider's diagnoses, recommended solutions, estimated cost, warranties, and timelines. Avoid contractors that pressure you or demand payment before work.
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 from the Environmental Protection Agency (EPA). To obtain the EPA Section 608 Technician Certification, a contractor 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 Tennessee, HVAC contractors are only required to be licensed if they work on projects valued at $25,000 or more. In these cases, they require a mechanical contractor license from the Department of Commerce and Insurance.
Many counties will require a Limited Licensed Electrician license to work on jobs involving electrical work, and there may be other local requirements for HVAC contractors. Be sure to confirm any requirements with your city or municipal government before signing a contract. Reviewing feedback on Yelp, Google Reviews, the Better Business Bureau (BBB), and similar sites can help your decision. Choose a company with great reviews and reports of positive customer experiences.
It’s important to understand what the work process is going to look like. For HVAC repairs, the company should explain the specific parts that need replacement and why. Confirm that your technician will clean and test the full system afterward to make sure everything is operating properly. When replacing your HVAC system, ask the installation company to provide details on the new model, energy efficiency, estimated installation time, features, and brand. Before work begins, make sure you understand the process your provider will use to select the correctly sized system 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 companies. Choose the one that gives you the most coverage at a fair cost.
Always get HVAC estimates in writing before work begins. A detailed quote covers costs for both materials and labor. Make sure that you agree to all terms before signing the contract.
You should have your HVAC system inspected about twice annually. At the time of the inspection, your technician will tell you what services are required. You should also have your system inspected if you start noticing issues such as strange noises, leaks, or unusual smells. If your system has ductwork, you should have it inspected every few years.
Usually, you should have your HVAC system inspected in the spring and fall, as technicians tend to be less busy at these times. This also helps make sure your system is prepared for the summer and winter, when it probably 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. Keep your thermostat temperature as close to the outside temperature as you comfortably can, and try to avoid making drastic changes in temperature all at once. Keep your roof well-maintained and seal any door or window leaks to help keep cool air in. Similarly, make sure your attic is well ventilated to avoid trapping excess heat in your home.
It takes roughly one to three days to have an HVAC system installed or replaced. If you only need a furnace or a single air conditioning unit, this can take anywhere from a few hours up to two days. This timeline can be affected by the size of your home, how easily accessible your system is, and any new issues your technician uncovers.
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 Chattanooga, 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. In Chattanooga, you'll likely want something on the higher end of this range. Typically, if your home is over 1,000 square feet, central air will be more effective than window air conditioning units.
Your HVAC company may have financing options through a third-party lender, or you may be able to obtain your own loan. It's a good idea to discuss payment options with your HVAC company and a financial advisor to make sure that you're choosing the best option for you.
There are several ways you can make your HVAC system more energy-efficient:
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