International Comfort Products (ICP) makes sure you aren't too hot or too cold, but just right. A United Technologies subsidiary (and part of its Carrier operating unit), ICP makes oil and gas furnaces, heat pumps, and central air-conditioning systems for residential and commercial customers. It sells home heating and cooling systems under the Heil, Tempstar, Comfortmaker, Arcoaire, Day & Night, and KeepRite brands. Its commercial units, with up to 20 tons of cooling capacity, are sold under the ICP Commercial, Heil, Arcoaire, Tempstar, and KeepRite names. ICP produces more than a million units a year at plants in the US, Mexico, and Canada. Products are sold through distributors, primarily in the US.