10 Best HVAC Companies in Nesconset, NY

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Last Updated: February 25, 2025

If you're like the typical American homeowner, over half of your energy bill (55%, per the U.S. Department of Energy) goes toward heating and cooling your home. Energy costs in Nesconset can be steeper than in some other places, which means you're probably trying to save money on your bill.

Explore our list of the top HVAC companies in Nesconset to find the best one for you and your home. Our topic contractors can help you stay comfortable while reducing your bills.

Top 10 Best HVAC Companies in Nesconset

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Air Specialties Air Conditioning & Heating Inc

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

Free quotes

Informative resources

Reliable customer support

Prompt service delivery

Clear pricing policy

Services Offered

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

M&R Mechanical Services

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

Free quotes

Informative resources

Clear pricing policy

Reliable customer support

Services Offered

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

Aire Serv of Shelton

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

Clear pricing policy

Informative resources

Free quotes

Reliable customer support

Prompt service delivery

Services Offered

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

Onofreo Home Comfort Systems LLC

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

Clear pricing policy

Prompt service delivery

Reliable customer support

Free quotes

Services Offered

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

Danisi Energy

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

Clear pricing policy

Free quotes

Reliable customer support

Informative resources

Services Offered

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

Sears Heating and Air Conditioning

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

Free quotes

Reliable customer support

Services Offered

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

Absolute HVAC Mechanical Systems Inc.

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

Informative resources

Clear pricing policy

Free quotes

Reliable customer support

Prompt service delivery

Services Offered

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

GMG HVAC Inc.

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

Informative resources

Free quotes

Reliable customer support

Clear pricing policy

Services Offered

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

Innovative Air Solutions Inc.

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11 Kimball Pl, Mt Vernon, NY 10550 (914) 855-1888 innovativeairsolutions.com

Clear pricing policy

Free quotes

Informative resources

Services Offered

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

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

Clear pricing policy

Free quotes

Informative resources

Services Offered

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

An HVAC system that's malfunctioning or outdated likely needs professional attention for maintenance or replacement. Watch for these signals that your system needs service:

  • Temperature control issues or thermostat malfunctions
  • Corrosion, rust, or cracking
  • Strange noises when turning on
  • Poor air circulation or uneven heating/cooling
  • Frequent breakdowns and need for repairs
  • Refrigerant leaks
  • Higher than normal energy bills
  • An HVAC system that's over 15 years old

If you notice any of the above, it's wise to have a local HVAC technician inspect your system. They can identify problems and let you know whether repair or full HVAC replacement is needed.

Cost of HVAC Installation and Maintenance in Nesconset

Your HVAC installation or maintenance cost fluctuates depending on the style of unit. Common HVAC unit types include the following:

  • Split or mini-split: If your home lacks the right ductwork for central air or heating, you probably have a split HVAC system. Split or mini-split systems consist of indoor units that control the temperature in individual rooms. These interior units are all connected to an outdoor unit.
  • Hybrid split: A hybrid split HVAC unit operates similarly to a regular split system. It provides flexibility by having the option to use either electricity or gas for energy.
  • Heat pump: Heat pumps exchange warm and cool air between your home and outside. They don't make their own heating and cooling, so they work more effectively in more moderate climates.
  • Packaged heating and air: Packaged HVAC systems are a good choice for smaller houses. They have a single cooling and heating unit, normally in an attic or basement. This unit is often space-saving, energy-efficient, and easy to maintain.

The cost of HVAC maintenance also varies depending on what kind of work being done. HVAC systems are complicated and might require different kinds of maintenance. The prices of some common 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

Essential HVAC maintenance is important, but can be expensive. Luckily, homeowners can take steps to reduce wear and tear on their HVAC and lower future maintenance needs.

  • Monitor for potential problems. Keeping an eye out for problems, for instance by routinely checking your thermostat and energy bills, lets you resolve them before they get out of hand.
  • Keep your system clean. Keeping your condenser fan blades, ductwork, indoor evaporator coil, and grills clean helps your HVAC system function properly and lowers the risk of mold. The National Air Duct Cleaners Association suggests cleaning your HVAC system when you notice it starting to get dirty.
  • Change filters regularly. Replacing or cleaning your air filters every 1–3 months helps air flow efficiently through your system. Also try to keep debris away from the external sections of your HVAC system as much as possible.
  • Change the position of your blinds seasonally. During winter, leaving your blinds open allows your home to benefit from passive solar heating. In the summer, keeping your blinds shut helps to block out heat. Doing both lowers the amount of work your HVAC system is required to do.
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, warranties, and timeframes. Avoid providers that pressure you or demand upfront payment.

Check Credentials

Look for an HVAC company that employs qualified technicians who have the necessary licensure and training. HVAC contractors in all states must obtain a Section 608 Technician Certification from the Environmental Protection Agency (EPA). This certification is mandatory for all technicians who "maintain, service, repair or dispose of equipment that could release refrigerants into the atmosphere." Contractors 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 by the state.

There is no state-level HVAC licensing in New York. 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 an Oil Burning Equipment Installer or High Pressure Boiler Operating Engineer license from the NYC Department of Buildings, or a Certificate of Qualification for Refrigerating System Operating Engineer from the Fire Department of New York. Also check a company's reviews and complaints on sites such as Google Reviews, Yelp, and the Better Business Bureau (BBB). Pick a company with great feedback and stories of satisfied customers.

Understand Work Details

Always make sure you know the details of your project. For HVAC repairs, your provider should detail which parts need replacement and why. Confirm that your technician will clean and test the system after repairs are finished to ensure that it’s working properly. When replacing your HVAC, have the provider describe the new energy efficiency, features, estimated installation time, 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 provide warranties for their services. Broader coverage is better, so make sure to compare warranties between providers. Choose the one that provides the most comprehensive coverage at a reasonable cost.

Get Quote in Writing

Get written bids before starting HVAC work. The quote should outline costs for both labor and materials. Review all terms carefully before signing.

Frequently Asked Questions About HVAC in Nesconset, NY

Generally, you should have your HVAC system inspected twice a year. After that inspection, your HVAC technician will tell you what services are needed. You should also call a technician if you start to notice any issues, such as leaks, unusual smells, or strange noises. If your home has ductwork, it should be serviced every few years.

The best times of the year to have your HVAC system inspected are the spring and fall. Technicians are less busy during these times, which makes it easier to get an appointment. This also ensures that your system is ready for the summer and winter, which is when it normally 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. Always keep your thermostat as close to the outside temperature as possible, and avoid making drastic changes — adjust it only a few degrees at once. You may also consider installing a smart thermostat.

It takes around one to three days to have an HVAC system installed or replaced. If you only need a furnace or a single air conditioning unit, this might take anywhere from a few hours up to two days. This timeline will be determined by the size of your home, the accessibility of your system, and any issues your technician discovers.

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 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.

There are several ways you can make your HVAC system more energy-efficient:

  • Keep ductwork clean, and change or clean your air filters on a regular basis.
  • Have regular inspections to take care of problems as they come up.
  • 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 keeping the temperature indoors as close to the outside temperature as you can.
  • When it comes time to replace any part of your system, explore Energy Star-certified or other environmentally friendly options.

Other Nesconset, NY Home Services

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