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Last Updated: February 25, 2025
According to the U.S. Department of Energy, about 55% of energy use in American homes goes toward heating and cooling. With the higher cost of living in North Hempstead, you're likely eager to save money on your energy bills.
We've researched and assembled this guide to North Hempstead's top HVAC companies to help you hire the best person for your job and get your system into its best shape ever.

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

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

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

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

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

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

Our Rating
User Rating
Free quotes
Reliable customer support
Services Offered

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

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

Our Rating
User Rating
Clear pricing policy
Reliable customer support
Free quotes
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:
If your home's HVAC system isn't working correctly or getting old, you may need to hire an HVAC contractor for maintenance or replacement. Watch for these common signs that your system requires expert attention:
If you notice any of these HVAC red flags, your system evaluated. A local provider can complete an inspection, identify problems, and recommend repairing or replacing your HVAC unit.
What you spend on HVAC installation or maintenance varies based on your system type. Common HVAC unit styles include the following:
HVAC maintenance prices differ depending on what services are needed. HVAC systems are complex and can require different maintenance services. Prices for common services are as follows:
| HVAC Unit Type | Cost | |
|---|---|---|
| Split | $2,021-$5,153 | |
| Hybrid Split | $4,096-$7,546 | |
| Heat Pump | $3,171-$32,315 | |
| Packaged Heating and Air | $265-$442 |
Repairing or replacing your HVAC system when needed is crucial, but can be costly. Thankfully, there are actions you can take to minimize wear and tear over time on your system.
| Service | Cost | |
|---|---|---|
| Filter Replacement | $66-$177 | |
| Condensor Cleaning | $1,327-$3,981 | |
| Thermostat Repair | $88-$221 | |
| Ductwork Cleaning | $425-$1,062 |
Knowing what to look for in an HVAC company is crucial for a successful project. Look for an experienced, licensed contractor that can give you peace of mind and make sure your system provides reliable air conditioning and heating for your home.
Contact at least three HVAC contractors for quotes. Explain your issues and schedule an in-person inspection if possible. Compare contractors' diagnoses, suggested repairs, estimated costs, timeframes, and warranties. Avoid companies that pressure you or demand upfront payment.
Look for an HVAC company that employs qualified technicians with the necessary training and licenses. HVAC contractors in all states must 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." An individual must pass an exam (the type of exam depends on the type of equipment they intend to work with) to be certified by the EPA. All other licensing requirements are handled at the state level.
The state of New York doesn't have state-level HVAC licensing. However, many cities and municipalities have their own requirements, so be sure to check with your local government. For example, in some cases, a technician may need a High Pressure Boiler Operating Engineer or Oil Burning Equipment Installer license from the NYC Department of Buildings, or a Certificate of Qualification for Refrigerating System Operating Engineer from the Fire Department of New York. You should also check a provider's reviews and complaints with organizations such as the Better Business Bureau (BBB), Yelp, and Google Reviews. You'll want to select a company with positive reviews and a history of good customer service.
Make sure you understand the details of any 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 your system after the repair to ensure that everything works. When replacing your HVAC, ask the installation company to provide details on the new estimated installation time, brand, model, features, and energy efficiency. Before signing a contract, make sure you understand how your provider will properly size the new unit for your home and what the cost will be.
Good HVAC companies offer warranties on repairs and equipment installations. The more complete the coverage, the better. Review warranty details between providers and pick the one that offers the most comprehensive protection within your budget.
Always get HVAC estimates in writing before work begins. A thorough quote covers costs for both materials and labor. Make sure that you agree to all terms before signing the contract.
Generally, your HVAC system should be inspected twice a year. After an inspection, your HVAC technician will tell you what, if any, services are required. You should also have your system inspected and serviced 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 to have your HVAC system inspected are during 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 throughout the year by reducing the amount of work it takes for your HVAC system to maintain the temperature of your home. Always keep your thermostat as close to the outside temperature as is comfortable, and avoid making drastic changes — adjust it only a few degrees at a time. You may also consider purchasing a smart thermostat.
Generally, whole-system HVAC installation or replacement takes one to three days. Installing or replacing a furnace or air conditioning unit may take anywhere from a few hours up to two days. The exact amount of time will vary depending on things like the size of your house, how easily accessible different sections are, and whether your technician finds any problems.
For a 2,000-square-foot home, you need around 2.5 to 5 tons of air conditioning capacity. For homes over 1,000 square feet, central air will 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).
Your HVAC company may have financing options through a third-party lender, or you might choose 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 several ways you can make your HVAC system more energy-efficient:
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