International Comfort Products Corporation (ICP) is a company that designs, manufactures and markets central air conditioning (HVAC) systems and gas and oil furnaces for use in homes and commercial buildings.

ICP makes oil and gas furnaces, heat pumps, and central air-conditioning systems for residential and commercial customers.

ICP's Tempstar has international sales with support in Shanghai, China; Canoas, Brazil; Bucharest, Romania and Wiener Neudorf, Austria.

Heil was established in 1962; the Tempstar brand was introduced in the 1980s in response to increased market demands for a full line of heating and cooling products.

Independent wholesalers sell residential and light commercial products to installers in the replacement and renovation sectors and to contractors in new construction.