Thornton Heating & Sheetmetal is a locally owned HVAC and custom metalwork company serving Southern Idaho since 1973. Based in Ketchum, the business works with homeowners and commercial customers in Hailey, Bellevue, Ketchum, Sun Valley, Stanley, Carey, and across Blaine and Camas counties. Its experienced technicians provide year-round heating and cooling services, including furnace and boiler repair, installation, replacement, and maintenance; air conditioning service; heat pumps; mini-split systems; and commercial HVAC.

The company also specializes in hydronic heating, with services for radiant floor heating, snow melt systems, and Lochinvar boilers. To support healthier indoor environments, Thornton offers humidifiers, air filtration and purification, ventilation improvements, and smart thermostats. Its in-house sheet metal shop produces custom ductwork, range hoods, chimney caps, dryer vents, HVAC fittings, and architectural and specialty metalwork in materials including stainless steel and copper.

Thornton emphasizes dependable service, honest recommendations, and quality workmanship, and identifies itself as a Carrier Factory Authorized Dealer. Customers can request emergency repairs, new equipment, routine maintenance, or tailored solutions for residential and commercial properties