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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 Department of Energy. You want to be comfortable in your Ferguson home, but you also don't want to waste your money on ineffective cooling and heating.
Our guide to the top HVAC companies in Ferguson can help you save money by getting your HVAC system repaired, installed or replaced for a fair price by a skilled worker.

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

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

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

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

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

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

Our Rating
User Rating
Clear pricing policy
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:
An HVAC system that's not working properly or past its lifespan likely needs professional attention for repairs or replacement. Watch for these signs that your system needs service:
Book an inspection if you notice any of these issues. A local technician can assess your system, detect problems, and determine whether you need repairs or a new HVAC unit.
The cost of HVAC installation or maintenance changes depending on the type of unit you have. Common kinds of HVAC units include the following:
HVAC expenses vary based on the work needed. HVAC systems are complicated and may need a number of types of maintenance. Costs for common jobs are as follows:
| HVAC Unit Type | Cost | |
|---|---|---|
| Split | $1,987-$5,064 | |
| Hybrid Split | $4,025-$7,416 | |
| Heat Pump | $3,117-$31,760 | |
| Packaged Heating and Air | $261-$435 |
HVAC system repairs and replacements are important, but can be pricey. Thankfully, there are steps homeowners can take to reduce wear and tear on their HVAC and lower future maintenance needs.
| Service | Cost | |
|---|---|---|
| Filter Replacement | $65-$174 | |
| Condensor Cleaning | $1,304-$3,912 | |
| Thermostat Repair | $87-$217 | |
| Ductwork Cleaning | $417-$1,043 |
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 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 HVAC system if possible. Compare the providers' explanations, solutions, estimated costs, timeframes, and warranties. Avoid companies 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 set by the Environmental Protection Agency (EPA). To obtain the EPA Section 608 Technician Certification, individuals 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 on a state-by-state basis.
The state of Missouri doesn't have state-level HVAC contractor licensing requirements; however, most municipalities have local requirements. Be sure to check with your local government to understand requirements for licenses like HVAC Contractor or HVAC Journeyman Contractor. You can also check that a company holds a valid business license. You should also read reviews and complaints on sites like Google Reviews, the Better Business Bureau (BBB), and Yelp. Choose a company with positive reviews and testimonials about fantastic customer experiences.
It’s important to understand what the work process will look like. For HVAC repairs, the company should explain the particular parts that need replacement and why. Confirm that your technician will clean and test your system afterward to ensure proper functioning. When getting a replacement, ask your contractor to explain the new HVAC system features, brand, model, estimated installation time, and energy efficiency. Before starting the project, you should understand the process your provider will use to properly size the system for your home and the price you'll pay.
Trustworthy HVAC companies back their work with warranties. Look at warranties from different companies, keeping in mind that more comprehensive coverage is better. Look for the company that provides the most coverage for a fair price.
Always get estimates for HVAC service in writing before committing to a provider. A detailed quote should cover both labor and materials. Make sure you agree to all terms before signing a contract.
You should have your HVAC system inspected twice a year. Following an inspection, your technician will tell you if any services are needed. You should also have your system inspected if you notice new issues such as unusual smells, leaks, or strange noises. If your system has ductwork, you should have it inspected every few years.
Normally, it's a good idea to 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 likely sees the most use.
You can save energy throughout the year by reducing the amount of power your HVAC system uses 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 once. You may 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 may take anywhere from a few hours up to two days. The exact amount of time will vary depending on factors like how large your home is, how easily accessible different parts of the system are, and whether your technician finds any problems.
For a 2,000-square-foot home, try to purchase a furnace that's between 50,000 and 80,000 BTUs (British thermal units).
For a 2,000-square-foot home, you'll also want an air conditioning unit with between 2.5 and 5 tons of capacity. 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 offer financing options via a third-party lender, or you may 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're choosing the best option for you.
There are a number of ways you can make your HVAC system more energy-efficient:
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