تكييف الهواء
Air conditioning and heating equipment is sold to the residential replacement market, the commercial market and residential new construction market. The replacement market has increased in importance over the past several years as a result of the aging of the installed base of residential central air conditioners and furnaces, the introduction of new higher energy efficient models, the remodeling and expansion of existing homes, the addition of central air conditioning to homes that previously had only heating products and consumers’ overall unwillingness to live without air conditioning or heating products. The mechanical life of central air conditioning and furnaces varies by geographical region due to usage and ranges from approximately 8 to 20 years. According to data published by the Energy Information Administration, there are approximately 89 million central air conditioning and heating systems installed in the U.S. that have been in service for more than 10 years. Many installed units are currently reaching the end of their useful lives, thus providing a growing and stable replacement market.