Residential central air conditioning has a long history going back to the 1920s. But many decades would pass before central AC systems became common and affordable for homeowners. Today, 90% of new houses are constructed with central air conditioning systems, which is a significant change from only twenty years ago.
The central air conditioning system has replaced the old window units that were once the main way for homes to enjoy cooling. Window units have a limited use, conditioning only small areas. They’re also unattractive-looking, block light, and make a home less secure. All around, central air conditioning is the superior choice for a home, and it also allows for indoor air quality improvement additions.