When it comes to Thru-The-Wall air conditioning and heating, Major Air Service Corp. is the most respected name in the industry and has been for over 45 years. Major Air is not a full-service heating and air conditioning company, instead we specialize in air-cooled Package Terminal Air Conditioning (PTAC’s) and water-cooled Package Terminal Heat Pumps (PTHP’s). Major Air’s only business is Thru-The-Wall air conditioning and heating units.

Major Air leads the industry with expertise, experience, and dedication. Our resources include the latest state-of-the-art equipment and technology to provide you with the service needed to keep your units up and running at peak performance to keep you comfortable throughout the heating and cooling seasons.

More than just sales and service our factory-trained technicians and sales personnel deliver the necessary analytical and mechanical skills required for your cost analysis, installation, repair, and maintenance of every major brand of Thru-The-Wall air conditioning and heating units.

Our clientele includes some of the largest builders, developers, and managers of luxury high-rises in Manhattan (co-ops, condos, and rentals), hotels, hospitals, and nursing homes.