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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. Since such a significant portion of your utility bill goes toward heating and cooling, you'll want to make sure the HVAC system in your Waterbury home is functioning properly.
Our guide to Waterbury's top HVAC companies can help you get your system into top shape, allowing you to keep comfortable while saving money.

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

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

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

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

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

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

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

Our Rating
User Rating
Clear pricing policy
Reliable customer support
Free quotes
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 old likely needs professional attention for maintenance or replacement. Watch for these signs that 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.
What you spend on HVAC installation or maintenance is determined by your system style. Common HVAC unit styles include the following:
HVAC maintenance costs vary depending on the particular service needed. HVAC systems are complex and can require different maintenance services. Prices for some common services are as follows:
| HVAC Unit Type | Cost | |
|---|---|---|
| Split | $1,930-$4,921 | |
| Hybrid Split | $3,911-$7,206 | |
| Heat Pump | $3,029-$30,860 | |
| Packaged Heating and Air | $253-$422 |
Fixing your HVAC by repairing or replacing parts when needed is important, but can be costly. Fortunately, there are steps you can take to slow the wear and tear on your system.
| Service | Cost | |
|---|---|---|
| Filter Replacement | $63-$169 | |
| Condensor Cleaning | $1,267-$3,801 | |
| Thermostat Repair | $84-$211 | |
| Ductwork Cleaning | $405-$1,014 |
Finding the right HVAC company is crucial for a smooth installation or repair. An experienced, credentialed HVAC contractor gives you confidence your system can provide consistent heating and air conditioning year-round.
Contact at least three HVAC providers for quotes. Describe your issues and schedule an in-person inspection if possible. Compare providers' diagnoses, suggested repairs, estimated costs, warranties, and timeframes. Avoid providers that pressure you or demand upfront payment.
Choose an HVAC company with skilled technicians who have appropriate licensing and experience. 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 at the state level.
All individuals in Connecticut who work on HVAC systems must be licensed by the Connecticut State Department of Consumer Protection. An individual can be licensed as a journeyperson or a contractor. Both license types have requirements related to education and work experience. Always check a company's reviews and complaints with organizations such as Google Reviews, Yelp, and the Better Business Bureau (BBB). You want to hire a company with glowing reviews and stories of positive service experiences.
It’s important to understand what the work process is going to look like. For HVAC repairs, the company should detail the exact parts that need replacement and why. Confirm that your technician will clean and test the full system afterward to guarantee everything is working correctly. When replacing your HVAC, request that the installation company describe the new model, energy efficiency, brand, features, and estimated installation time. Before work starts, ask about the process your provider will use to properly size the new system for your home and how much it will cost.
Reliable HVAC companies provide warranties for their work. The broader the coverage, the better, so make sure to compare warranties between providers. Choose the one that offers the best coverage at a reasonable cost.
Get written estimates before starting any HVAC work. The quote should include costs for both labor and materials. Review all terms carefully before signing.
Generally, your HVAC system should be inspected twice a year. After that inspection, your HVAC technician will tell you what services are required. You should also have an inspection if you notice any new issues, like unusual smells, strange noises, or leaks. If you have ductwork in your home, it should be serviced every few years.
The best times of the year to have an HVAC inspection are the spring and fall. Technicians are often 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, the times of the year when it gets 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 may also consider a smart thermostat.
Generally, HVAC installation or replacement takes one to three days for the entire system. Installing or replacing an air conditioning unit or a furnace can take as little as half a day or as much as two days. The exact amount of time will vary depending on things 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, look for 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 to look for an air conditioning unit with between 2.5 and 5 tons of capacity. Typically, if your home is over 1,000 square feet, central air will be more effective than window air conditioning units.
There are a number of ways you can make your HVAC system more energy-efficient:
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