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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 so much money spent on cooling and heating your Lemay home, you want to know that you're getting the best return on your investment.
We've assembled this guide to Lemay's top HVAC companies to help you choose the right person for your job and get your system into its best shape ever.

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

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

Our Rating
User Rating
Informative resources
Reliable customer support
Services Offered

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

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

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

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

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

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

Our Rating
User Rating
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:
An HVAC system that's broken or outdated likely needs professional attention for maintenance or replacement. Watch for these signals that your system needs service:
If you notice any of the above, it's wise to have a local HVAC technician inspect your system. They can pinpoint problems and determine whether repair or full HVAC replacement is needed.
What you pay for HVAC installation or maintenance depends on your system type. Common HVAC unit styles include the following:
HVAC maintenance costs vary depending on what services are needed. HVAC systems are complicated and might require different kinds of maintenance. Fees for common services are as follows:
| HVAC Unit Type | Cost | |
|---|---|---|
| Split | $1,973-$5,030 | |
| Hybrid Split | $3,998-$7,366 | |
| Heat Pump | $3,096-$31,544 | |
| Packaged Heating and Air | $259-$432 |
Repairing or replacing your HVAC system when needed is crucial, but can be expensive. Fortunately, there are actions you can take to reduce gradual wear and tear on your system.
| Service | Cost | |
|---|---|---|
| Filter Replacement | $65-$173 | |
| Condensor Cleaning | $1,295-$3,886 | |
| Thermostat Repair | $86-$216 | |
| Ductwork Cleaning | $414-$1,036 |
Knowing the indicators of a reliable HVAC company is key for a smooth repair or installation. Picking an established business with certified technicians gives you assurance your HVAC system will deliver consistent coolig and heating year-round.
Contact at least three HVAC companies for quotes. Explain the issues and have specialists visit to inspect your system if possible. Compare the contractors' explanations, solutions, estimated costs, warranties, and timeframes. Avoid providers that pressure you or demand payment upfront.
It's important to choose an HVAC company that employs technicians with the appropriate qualifications and expertise. In all states, HVAC contractors 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 intend 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 at the state level.
The state of Missouri doesn't have state-level HVAC contractor licensing requirements; however, most municipalities have local requirements. Make sure that you check with your local government to understand requirements for licenses like HVAC Contractor or HVAC Journeyman Contractor. You can also confirm that a company holds a valid business license. You should also look at reviews and complaints on sites like the Better Business Bureau (BBB), Yelp, and Google Reviews. Choose a company with glowing reviews and reports of fantastic customer experiences.
Always make sure you know the details of your project. For HVAC repairs, your provider should specify which parts need replacement and why. Confirm that your technician will clean and test the system after repairs are done to verify that it’s working properly. When replacing your HVAC, have the provider describe the new estimated installation time, energy efficiency, brand, features, and model. Before signing a contract, ask how your provider plans to accurately size the unit for your home and how much it will cost.
Good HVAC companies offer warranties on service and installations. The more complete the coverage, the better. Review warranty details between providers and pick the one that offers the most comprehensive protection for the fairest price.
Always get estimates for HVAC service in writing before committing to a provider. A detailed quote should cover both materials and labor. Make sure you understand all terms before signing a contract.
Generally, your HVAC system should be inspected twice a year. After an 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 unusual smells, strange noises, or leaks. If your home has ductwork, 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, which makes it 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 throughout the year by making it easier for your HVAC system to maintain your home's temperature. During all seasons, keep your thermostat as close to the outside temperature as possible, and try to adjust it only a few degrees at a time. You could also consider installing a smart thermostat.
For a 2,000-square-foot home, you should look for around 2.5 to 5 tons of air conditioning capacity. If your home is larger than 1,000 square feet, central air will be more effective than window units for cooling.
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).
Your HVAC company may provide financing options via a third-party lender, or you might be able to obtain your own loan. It's a good idea to discuss payment options with a financial advisor and your HVAC company 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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