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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 Hattiesburg home, you want to make sure you're getting the best return on your investment.
Read our list of the top HVAC companies in Hattiesburg to find the best choice for you and your home. Our topic contractors can help you reduce your bills while still staying comfortable.

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

Our Rating
User Rating
Reliable customer support
Informative resources
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
Services Offered

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

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

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

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

Our Rating
User Rating
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:
An HVAC system that's not working properly or past its lifespan likely needs professional attention for maintenance or replacement. Watch for these signs that your system needs service:
Schedule an inspection if you notice any of these problems. A local technician can inspect your system, detect problems, and decide whether you need repairs or a new HVAC unit.
What you spend on HVAC installation or maintenance depends on your system style. Common HVAC unit styles include the following:
The cost of HVAC maintenance also depends on the kind of work you're having done. HVAC systems are complicated and can require different kinds of maintenance. The cost of some common repairs is as follows:
| HVAC Unit Type | Cost | |
|---|---|---|
| Split | $1,765-$4,499 | |
| Hybrid Split | $3,576-$6,588 | |
| Heat Pump | $2,769-$28,215 | |
| Packaged Heating and Air | $232-$386 |
Essential HVAC maintenance is important, but can be pricey. Thankfully, homeowners can take steps to reduce wear and tear on their HVAC and lower future maintenance needs.
| Service | Cost | |
|---|---|---|
| Filter Replacement | $58-$154 | |
| Condensor Cleaning | $1,159-$3,476 | |
| Thermostat Repair | $77-$193 | |
| Ductwork Cleaning | $371-$927 |
It's important to know what makes a good HVAC company. Working with a contractor that's properly licensed and highly experienced will give you confidence that they can maintain your HVAC system properly, providing you with effective heating and cooling in your home.
Request estimates from three or more HVAC providers. Explain your issues and ask if specialists can inspect your system in person. Compare each provider's diagnoses, recommended solutions, estimated cost, warranties, and timeline. Avoid providers that pressure you or demand payment before work.
It's important to choose an HVAC company that employs technicians with the appropriate qualifications and expertise. HVAC contractors in all states have federal requirements set by the Environmental Protection Agency (EPA). To obtain the EPA Section 608 Technician Certification, individuals must pass an exam (the specific 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 at the state level.
In Mississippi, HVAC contractors and subcontractors are required to be licensed by the Mississippi State Board of Contractors. To be licensed, contractors need to provide proof of general liability insurance. They must also have workers' compensation insurance if they have above a certain number of employees. Reviewing feedback on the Better Business Bureau (BBB), Google Reviews, Yelp, and similar sites can assist your decision as well. Choose a provider with stellar reviews and reports of positive customer experiences.
Always make sure you understand what a company’s process is like. When HVAC repairs are needed, ask your provider to list which parts need replacement and why. Confirm that your technician will clean and test your system after finishing the work to verify proper operation. When replacing your HVAC, ask the provider to explain the new energy efficiency, estimated installation time, model, features, and brand. Before signing paperwork, make sure you understand how your provider will determine the right system size for your home and what the price will be.
Trustworthy HVAC companies provide warranties for their work. Broader coverage is better, so make sure to compare warranties between companies. Choose the one that offers the best coverage at a fair cost.
Get written bids before beginning any HVAC work. The quote should outline costs for both labor and materials. Review all terms carefully before signing.
Generally, you should have your HVAC system inspected twice a year. After an inspection, your HVAC technician will tell you what, if any, services are needed. You should also have your system inspected and serviced if you start to notice any issues, such as unusual smells, strange noises, or leaks. If your home has ductwork, it should be serviced every few years.
The best times to have your HVAC system inspected are the spring and fall. Technicians are generally 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 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. Set your thermostat as close to the outside temperature as you can, and try to avoid making drastic changes in temperature all at once. Keep your roof in good shape and seal any window or door 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 around one to three days to have an HVAC system installed or replaced. If you need just a furnace or a single air conditioning unit, this might take anywhere from a few hours up to two days. This timeline can be affected by the size of your home, the accessibility of your system, and any new issues your technician discovers.
For a 2,000-square-foot home, you'll want a furnace that's between 50,000 and 80,000 BTUs (British thermal units). In Hattiesburg, 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 purchase an air conditioning unit with around 2.5 to 5 tons of capacity. In Hattiesburg, you'll likely want a unit on the higher end of this range. In general, 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 have financing options through a third-party lender, or you may choose to obtain your own loan. It's smart to discuss payment options with a financial advisor and your HVAC company 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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