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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. Energy costs in North Castle are often higher than in other places, meaning that you'd probably like to save money on your bill.
We've put together this guide to North Castle's top HVAC companies to help you find the best person for your job and get your system into its best shape ever.

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

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

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

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

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

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

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

Our Rating
User Rating
Free quotes
Clear pricing policy
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:
If your home's HVAC system is malfunctioning or getting old, you may need to hire an HVAC contractor for maintenance or replacement. Look for these common signs that your system needs expert attention:
Schedule an inspection if you notice any of these issues. A local technician can evaluate your system, detect problems, and figure out whether you need to fix or replace your HVAC.
What you pay for HVAC installation or maintenance depends on your system style. Common HVAC unit styles include the following:
The price of HVAC maintenance also depends on what kind of work being done. HVAC systems are complex and may require different kinds of maintenance. The prices of some common jobs are as follows:
| HVAC Unit Type | Cost | |
|---|---|---|
| Split | $1,974-$5,032 | |
| Hybrid Split | $4,000-$7,369 | |
| Heat Pump | $3,097-$31,558 | |
| Packaged Heating and Air | $259-$432 |
It’s important to complete repairs or full-system HVAC replacements as needed, though they can be expensive. The good news is that homeowners have ways to reduce gradual wear and tear and reduce the frequency of breakdowns.
| Service | Cost | |
|---|---|---|
| Filter Replacement | $65-$173 | |
| Condensor Cleaning | $1,296-$3,888 | |
| Thermostat Repair | $86-$216 | |
| Ductwork Cleaning | $415-$1,037 |
Knowing what to look for in an HVAC company is important for a successful project. Look for an experienced, licensed contractor that can give you peace of mind and make sure your system provides reliable heating and air conditioning for your home.
Contact at least three HVAC providers for quotes. Explain 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.
When looking for an HVAC provider, choose one with technicians that have the proper training, licenses, and experience. HVAC contractors in all states must obtain a Section 608 Technician Certification from the Environmental Protection Agency (EPA). This certification is mandatory for all contractors who "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 what kind of equipment they intend to work with) to be certified by the EPA. All other licensing requirements are handled at the state level.
There is no state-level HVAC licensing in New York. However, there may be local requirements, so be sure to check with your city or municipal 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 look at reviews and complaints on sites like the Better Business Bureau (BBB), Yelp, and Google Reviews. Pick a company with glowing reviews and reports of good customer experiences.
Always make sure you know what a company’s process looks like. When HVAC repairs are needed, ask your provider to explain which parts require replacement and why. Confirm that your technician will clean and test your system afterward to verify proper operation. When replacing your HVAC system, ask the contractor to describe the new estimated installation time, brand, features, energy efficiency, and model. 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 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 for the fairest price.
Always get HVAC quotes in writing before work begins. A comprehensive quote will cover costs for both labor and materials. Confirm that you agree to all terms before signing the contract.
You should have your HVAC system inspected twice annually. After the inspection, your technician will inform you if any services are needed. You should also call a technician if you start noticing issues such as leaks, strange noises, or unusual smells. If your home has ductwork, you should have it inspected every few years.
Normally, it's best to have your HVAC system inspected in the spring and fall, as these times tend to be less busy. This also helps make sure your system is prepared for the summer and winter, when it probably sees the most use.
You can save energy throughout the year by reducing the amount of power your HVAC system uses to maintain the temperature of your home. During all seasons, keep your thermostat as close to the outside temperature as possible, and avoid making drastic changes — adjust it only a few degrees at a time. You could also consider installing a smart thermostat.
Generally, HVAC installation or replacement takes one to three days for the entire system. Installing or replacing a furnace or air conditioning unit can take as little as half a day or as much as two days. The exact amount of time will be based on factors like the size of your home, how easily accessible different sections are, and whether your technician discovers any problems.
For a 2,000-square-foot home, you'll want 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 around 2.5 to 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.
Typically, HVAC financing is through a third-party lender. If your HVAC company doesn't have financing options, you may consider taking out a loan on your own. Be sure to speak with your HVAC company and a financial advisor to determine what options are available and appropriate for your situation.
There are a number of ways you can make your HVAC system more energy-efficient:
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