10 Best HVAC Companies in Mastic, NY

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Last Updated: February 25, 2025

According to the U.S. Department of Energy, approximately 55% of energy use in American homes goes toward heating and cooling. With the higher cost of living in Mastic, you're likely eager to find ways to save on your energy bills.

Read our list of the top HVAC companies in Mastic to find the best choice for you and your home. Our topic contractors can help you reduce your bills while still staying comfortable.

Top 10 Best HVAC Companies in Mastic

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Air Specialties Air Conditioning & Heating Inc

Air Specialties Air Conditioning & Heating Inc Logo

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25 Spring St, West Haven, CT 06516 (203) 533-4012 airspecialtiesac.com

Clear pricing policy

Prompt service delivery

Free quotes

Reliable customer support

Informative resources

Services Offered

Filtration
Ac repair
Inspection
Emergency services
Ventilation
Ductless
Boiler installation
Indoor air quality
Furnace repair
Maintenance
Boiler repair
Ac installation
Furnace installation

M&R Mechanical Services

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1050 Bridgeport Ave F3, Milford, CT 06460 (203) 951-5207 mandrmechanical.com

Informative resources

Free quotes

Reliable customer support

Clear pricing policy

Services Offered

Boiler installation
Boiler repair
Furnace installation
Ventilation
Ac installation
Indoor air quality
Ac repair
Filtration
Maintenance
Emergency services
Furnace repair
Duct cleaning
Ductless

Aire Serv of Shelton

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41 Clifton Ave, Ansonia, CT 06401 (203) 717-9527 aireserv.com

Free quotes

Informative resources

Reliable customer support

Clear pricing policy

Prompt service delivery

Services Offered

Furnace repair
Furnace installation
Inspection
Duct cleaning
Ac repair
Boiler repair
Boiler installation
Emergency services
Filtration
Maintenance
Ac installation
Indoor air quality

Onofreo Home Comfort Systems LLC

Onofreo Home Comfort Systems LLC Logo

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280 Quarry Rd, Milford, CT 06460 (203) 793-6811 onofreohomecomfort.com

Reliable customer support

Clear pricing policy

Prompt service delivery

Free quotes

Services Offered

Ac repair
Ductless
Indoor air quality
Boiler installation
Emergency services
Furnace installation
Maintenance
Ac installation
Ventilation
Filtration
Inspection

Danisi Energy

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3205 NY-112, Medford, NY 11763 (631) 732-6666 danisienergy.com

Reliable customer support

Clear pricing policy

Free quotes

Informative resources

Services Offered

Filtration
Indoor air quality
Furnace installation
Ductless
Inspection
Emergency services
Radiant heating
Ventilation
Boiler installation
Ac installation
Maintenance
Ac repair

Sears Heating and Air Conditioning

Sears Heating and Air Conditioning Logo

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User Rating

35 Melville Park Rd Ste 200, Melville, NY 11747 (631) 270-5310 searshomeservices.com

Reliable customer support

Free quotes

Services Offered

Furnace installation
Inspection
Filtration
Ductless
Ventilation
Indoor air quality
Ac installation
Maintenance
Ac repair
Boiler installation

Absolute HVAC Mechanical Systems Inc.

Absolute HVAC Mechanical Systems Inc. Logo

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User Rating

Granny Rd, Farmingville, NY 11738 (631) 320-0814 absolutehvacli.com

Prompt service delivery

Informative resources

Reliable customer support

Clear pricing policy

Free quotes

Services Offered

Indoor air quality
Ac repair
Ventilation
Furnace installation
Maintenance
Emergency services
Inspection
Boiler installation
Ac installation
Ductless

Grant Heating & Cooling

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48 E Hampton Sag Harbor Turnpike, East Hampton, NY 11937 (631) 324-0679 granthvac.com

Prompt service delivery

Services Offered

Indoor air quality
Emergency services
Zoning systems
Filtration
Boiler repair
Ac repair
Boiler installation
Ductless
Ac installation
Furnace installation
Ventilation
Maintenance
Furnace repair
Radiant heating
Duct cleaning

GMG HVAC Inc.

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77 Windsor Pl Suite 11, Central Islip, NY 11722 (631) 309-2535 gmghvac.com

Clear pricing policy

Free quotes

Reliable customer support

Informative resources

Services Offered

Emergency services
Maintenance
Ac installation
Furnace installation
Ventilation
Ac repair
Furnace repair
Filtration
Indoor air quality
Duct cleaning

ALL Seasons Air Conditioning

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User Rating

40 Field St, West Babylon, NY 11704 (631) 694-1616 seasonsair.com

Reliable customer support

Free quotes

Clear pricing policy

Informative resources

Services Offered

Inspection
Ac installation
Furnace installation
Ac repair
Ductless
Maintenance
Filtration
Emergency services
Ventilation
Indoor air quality
Today's Homeowner Ranking Methodology

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:

  • Company Experience
  • Real User Reviews
  • Company Reputation
  • Accreditations and Licenses
  • Service Area
  • Customer Service
Have questions about our methodology or company ratings? Reach out to FindAPro@TodaysHomeowner.com.

Signs You May Need HVAC Repair or Replacement

If your home's HVAC system is malfunctioning or suffering from a lot of wear and tear, you might need an HVAC contractor for repairs or replacement. Look for these common signs that your system needs expert attention:

  • Frequent breakdowns and need for repairs
  • Refrigerant leaks
  • Cracking, corrosion, or rust
  • Uneven heating/cooling or poor air circulation
  • Temperature control issues or thermostat malfunctions
  • Odd noises when the system turns on
  • Unusually high energy bills
  • An HVAC system that's over 15 years old

Arrange an inspection if you notice any of these problems. A local technician can inspect your system, identify problems, and decide whether you need to fix or replace your HVAC.

Cost of HVAC Installation and Maintenance in Mastic

What you spend on HVAC installation or maintenance is determined by your system style. Common HVAC unit styles include the following:

  • Split or mini-split: If your home doesn't have the right ductwork for central heating or air, you likely have a split HVAC system. Split or mini-split systems consist of interior units that regulate the temperature in individual rooms. These interior units are all connected to an outdoor unit.
  • Hybrid split: A hybrid split HVAC system functions very similarly to a standard split system. It has the benefit of being able to utilize either gas or electricity for power.
  • Heat pump: Heat pumps exchange warm and cold air between your home and outside. They don't produce their own heat or AC, so they work best in temperate climates.
  • Packaged heating and air: Packaged HVAC systems are a practical choice for smaller homes. These systems have a single combined AC and heating, normally located in a basement or attic. They're small, energy-efficient, and easy to maintain.

HVAC maintenance prices differ based on the specific services required. HVAC systems can be complicated and potentially require several different services. Costs for typical jobs are as follows:

HVAC Unit TypeCost
Split$1,948-$4,966
Hybrid Split$3,947-$7,272
Heat Pump$3,056-$31,141
Packaged Heating and Air$256-$426

Ways to Save Money on HVAC Costs

Fixing your HVAC by repairing or replacing parts when needed is important, but can be costly. Thankfully, there are steps you can take to slow the wear and tear on your system.

  • Change the position of your blinds seasonally. Keeping your blinds closed in the summer helps block out passive solar heat. Keeping them open in the winter helps you take advantage of this same heat. Both of these measures help reduce the amount of work your HVAC system needs to do.
  • Keep your system clean. Regularly cleaning ductwork, grills, condenser fan blades, and indoor evaporator coil helps keep your HVAC system running efficiently and lowers your risk of mold. The National Air Duct Cleaners Association advises cleaning your heating and cooling system when it starts to look dirty.
  • Change filters regularly. Changing or cleaning your air filters every 30–90 days helps air flow efficiently through your HVAC system. We also recommend regularly clearing dirt and debris away from the outdoor sections of your system.
  • Monitor for potential problems. Keeping a close eye on the efficiency of your HVAC system — for instance by checking your thermostat settings and energy bills — helps you identify and fix problems before they get too expensive.
ServiceCost
Filter Replacement$64-$170
Condensor Cleaning$1,279-$3,836
Thermostat Repair$85-$213
Ductwork Cleaning$409-$1,023

How To Choose a Local HVAC Company

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.

Compare Multiple Bids

Contact at least three HVAC providers for quotes. Describe your issues and schedule an in-person inspection if possible. Compare companies' diagnoses, suggested repairs, estimated costs, timeframes, and warranties. Avoid providers that pressure you or demand upfront payment.

Check Credentials

Choose an HVAC company with well-trained technicians who have proper licensing and experience. HVAC contractors in all states have federal requirements set by the Environmental Protection Agency (EPA). To obtain the EPA Section 608 Technician Certification, a contractor must pass an exam (the type of exam depends on the 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.

The state of New York doesn't have state-level HVAC licensing; 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. Reviewing feedback on Google Reviews, the Better Business Bureau (BBB), Yelp, and similar sites can aid your decision. Choose a provider with great reviews and stories of positive experiences from customers.

Understand Work Details

It’s important to understand what the work process will look like. For HVAC repairs, the company should explain the specific parts that need replacement and why. Confirm that your technician will clean and test your system afterward to ensure proper functioning. When replacing your HVAC, ask the contractor to describe the new estimated installation time, features, energy efficiency, model, and brand. Before work starts, ask how your provider plans to accurately size the unit for your home and how much it will cost.

Compare Warranties

Trustworthy HVAC companies back their services with warranties. Look at warranties from different companies, remembering that more comprehensive coverage is better. Look for the provider that offers the most coverage for a reasonable price.

Get Quote in Writing

Get written estimates before beginning any HVAC work. The quote should cover costs for both materials and labor. Review all terms carefully before signing.

Frequently Asked Questions About HVAC in Mastic, NY

Typically, you should have your HVAC system inspected twice a year. After that inspection, your 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 strange noises, leaks, or unusual smells. If your home has ductwork, it should be serviced every few years.

The best times of the year to have an HVAC inspection are the spring and fall. Technicians tend to be less busy during these times, so it will be easier to get an appointment. This also helps get your system ready for the summer and winter, when it typically sees the most use.

You can save energy throughout the year by making it easier for your HVAC system to maintain your home's temperature. Always keep your thermostat as close to the outside temperature as possible, and try to 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 takes anywhere from about half a day up to two days. The exact amount of time will depend on things like how large your home is, how easily accessible different areas are, and whether your technician discovers 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. 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 via a third-party lender, or you might be able 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 a number of ways you can make your HVAC system more energy-efficient:

  • Keep your air ducts clean and change or clean your air filters on a regular basis.
  • Schedule regular inspections to take care of issues as they arise.
  • Make sure your doors and windows are well-sealed and keep your attic well-ventilated.
  • Install a smart thermostat. If you don't want to or can't buy one, try to keep your inside temperature as close to the outside temperature as is comfortable.
  • When it comes time to replace any part of your system, see if there are Energy Star-certified or similar environmentally friendly options.

Other Mastic, NY Home Services

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