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Last Updated: February 25, 2025
On average, 55% of energy use in American homes goes toward heating and cooling, according to the U.S. Department of Energy. With Frankfort's higher cost of living, you're probably eager to save money on your energy bills.
Use our guide to the top HVAC companies in Frankfort to find the best choice for you and your home. Our topic contractors can help you reduce your bills while still staying comfortable.

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

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

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

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

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

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

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

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

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

Our Rating
User Rating
Free quotes
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 HVAC system is broken or getting near the end of its lifespan, it likely needs servicing or replacement from an HVAC company. Look for these signs your system needs service:
If you're experiencing any of these HVAC issues, have a technician inspect your system. A local professional can diagnose problems and determine whether repairing or getting a new HVAC unit is the correct solution.
HVAC installation or maintenance costs change depending on your system. Common HVAC unit varieties include the following:
The amount you spend on HVAC maintenance also varies depending on what kind of work you're having done. HVAC systems are complicated and might require different kinds of maintenance. The prices of some common jobs are as follows:
| HVAC Unit Type | Cost | |
|---|---|---|
| Split | $1,933-$4,928 | |
| Hybrid Split | $3,917-$7,216 | |
| Heat Pump | $3,033-$30,903 | |
| Packaged Heating and Air | $254-$423 |
It's important to fix or swap out your HVAC components when they become damaged, but it can also be expensive. Luckily, there are some steps you can take to slow the wear and tear on your system.
| Service | Cost | |
|---|---|---|
| Filter Replacement | $63-$169 | |
| Condensor Cleaning | $1,269-$3,807 | |
| Thermostat Repair | $85-$211 | |
| Ductwork Cleaning | $406-$1,015 |
Finding the right HVAC company is crucial for a successful installation or repair. An experienced, credentialed HVAC contractor gives you confidence your system can provide consistent heating and air conditioning year-round.
Request estimates from three or more HVAC companies. Describe your issues and ask if specialists can inspect your system in person. Compare each contractor's diagnoses, recommended solutions, estimated cost, warranties, and timeline. Avoid providers that pressure you or demand payment before work.
When looking for an HVAC company, choose one with technicians that have the appropriate training, licenses, and experience. HVAC contractors in all states need to obtain a Section 608 Technician Certification from the Environmental Protection Agency (EPA). This certification is required 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 what kind of equipment they intend to work with) to be certified by the EPA. All other licensing requirements are handled at the state level.
There are no state-level licensing requirements for contractors in Illinois. However, there may be local regulations. Be sure to check with your municipal government to confirm that your contractor meets all of the requirements. You can verify an Illinois business license on the Secretary of State's website. You should also look at reviews and complaints on sites like the Better Business Bureau (BBB), Google Reviews, and Yelp. Pick a company with positive reviews and testimonials about fantastic customer experiences.
Make sure you understand the details of your project before starting. When getting HVAC repairs, have your provider specify 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, request that the company explain the new features, brand, energy efficiency, estimated installation time, and model. Before signing paperwork, 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.
Good HVAC companies offer warranties on service and equipment installations. The more complete the coverage, the better. Review warranty details between companies and pick the one that provides the best protection for a fair price.
Always get quotes for HVAC service in writing before committing to a provider. A detailed quote should cover both labor and materials. Make sure you understand all terms before signing a 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 call a technician if you notice any new issues, such as leaks, strange noises, or unusual smells. If you have ductwork in your home, 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 are generally less busy during these times, which makes it easier to get an appointment. This also ensures that your system is ready for the summer and winter, when it typically 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 your home's temperature. During all seasons, keep your thermostat as close to the outside temperature as you can, and avoid making drastic changes — adjust it only a few degrees at a time. You might also consider purchasing a smart thermostat.
Generally, whole-system HVAC installation or replacement takes one to three days. Installing or replacing an air conditioning unit or a furnace 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 house, how easily accessible different sections are, and whether your technician runs into any problems.
For a 2,000-square-foot home, you'll need between 2.5 and 5 tons of air conditioning capacity. If your home is larger than 1,000 square feet, central air will generally be more effective for cooling than window units.
For a 2,000-square-foot home, you should also look for a furnace that is between 50,000 and 80,000 BTUs (British thermal units).
There are a number of ways you can make your HVAC system more energy-efficient:
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