HVAC Services
We offer the following HVAC services:

Professional HVAC Services
on Long Island, NY and All of Nassau & Suffolk County

When you need HVAC services, you can always depend on the outstanding work of GallettAir Inc. Equipped with the right equipment, training, and products, we'll have your heating and air conditioning system up and running in no time.


As a fully licensed and insured HVAC contractor, it’s our pleasure to provide outstanding residential and commercial HVAC services, such as prompt repairs, detailed service contracts, system replacements, and complete installations on Long Island, NY, and the surrounding communities of Suffolk County and Nassau County.


With more than 40 years of experience, we’ve built up a reputation for quality, honesty, and reliability. We have the expertise to provide everything from basic maintenance service as well as installations of air conditioning, heating boilers, furnaces, heat pumps, and ductless heating systems to complex design and spec. applications. We also offer air duct cleaning and sanitizing services, as well as special pricing on high efficiency water heaters and tankless water heaters. 


Contact us today to schedule a service appointment or request an estimate on your project!

GallettAir Inc. is a professional and trusted name in the Heating and Air Conditioning Industry.

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Heating Services
GallettAir Inc. provides professional and affordable heating installation and repair services for both Commercial and Residential properties. From natural gas heating systems to heat pump systems, ductless heating systems, residential water heaters, commercial boilers, oil to gas conversions and everything else heating-related, we have the knowledge and skills to handle even the toughest challenges.
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Air Conditioning Installation, Maintenance & Repair Services
If your air conditioner needs a tune-up or a full replacement, or if you've never had an air conditioner and you need one installed, turn to the experts at GallettAir Inc. You can rest assured that our air conditioning service team will get the job done right. Our NATE-certified technicians have the expertise to tackle any air conditioning installation or repair, no matter how complex.
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Residential Home Services
If you’re looking for fantastic residential services, GallettAir Inc. has just what you need. We offer outstanding heating and cooling services 24 hours a day, seven days a week. All of our work is backed up by our superior 10-year* guarantee! When you combine our services with a variety of financing options and an amazing track record for excellence, you can rest assured that your heating and cooling systems are in good hands.
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Commercial HVAC Services
Every business needs a fully functioning HVAC system. Adequate heating in the winter and adequate air conditioning in the summer are both essential parts of the customer experience. After all, if your customers are uncomfortable and unhappy, they're not likely to return! If your commercial HVAC system needs repair or replacement, don't wait. Call now for comprehensive commercial HVAC services.
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Water Heaters
If your water heater needs simple maintenance services, or if it's beyond repair and you need a reliable replacement company, you can count on GallettAir Inc. to perform the services you need efficiently and affordably. We sell, service, and install all makes and models of water heaters, including natural gas, LP gas, indirect, & tankless water heaters.
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Duct Cleaning & Sanitizing
When it comes to professional duct cleaning and sanitizing services, at GallettAir Inc. we utilize the most effective techniques and the latest advancements in technology to ensure the best results when professionally cleaning and sanitizing air ducts. Our patented pneumatic duct whip cleaning procedure and power vacuum trucks will clean and sanitize your entire system to like-new condition. Call today to receive a free* air duct cleaning estimate.
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Service Contracts
Keep your HVAC system running all year round with a reliable service contract from GallettAir Inc.
Offering Parts and Labor Gas Contracts for as low as $275.00* plus tax per year. All of our service agreements include many high cost parts, unlimited service calls throughout the year, 24-hour emergency services, weekend and holiday emergency services, and preventative maintenance at no extra charge. As with all insurance policies, terms and conditions may vary according to the age of your home, type and make of appliance, original manufacturer warranties, and other factors. Please talk to one of our friendly technicians or customer service representatives to find out more!
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For the best commercial & residential HVAC service on Long Island, call today!