Preferred Air Inc. has been servicing homes on the North Shore of the Boston area since 1991. We provide residential and commercial HVAC installations, maintenance and service on a variety of systems. These systems include AC, heating, indoor air quality, ductless split systems, and geothermal. Preferred Air Inc. also offers a full-service sheet metal department, including a custom duct fabrication division. We do complete design-build jobs and offer engineering services to meet your needs. We have earned a community-wide reputation for honesty, professionalism, and courteous service. Preferred Air prides itself on using leading technologies in the field. We can help customers get the most from their existing system in terms of comfort, safety, and energy savings. Our technicians are factory trained and available 24-hours a day for emergencies.