Carrier air conditioning and heating products have been and the cutting edge of heating and cooling technology for over 50 years and offer a wide range of products to control temperature. These products are suitable for use in houses and workplaces with a wide range of products for every type of premises. The Carrier wall mounted air conditioners range in capacity from 2.5kw right up to 7.1kw in size and comprise a high wall mounted indoor unit with infra-red controller and outdoor unit, you also have the option of buying an air conditioning installation kit with these systems. These systems are air to air heat pumps and hence can provide either air conditioning or heating depending in which mode you put them in. The Carrier 42QHC012D8S is the most popular system followed by the larger capacity Carrier 42QHC018D8S 5kw model. All use the latest R32 refrigerant gas and offer a competitively priced wall mounted air conditioning and heat pump system.