Staying Cool How To Replace Your Old Central Air Conditioner
Media Platforms Design Team(Photograph by Dan Chavkin)Like so many powerful innovations, central air conditioning is easy to take for granted. The cool, dry air that whispers unceasingly from wall and ceiling registers can lull us into a false sense of security. Then an electric bill arrives, or the system starts to falter. Suddenly we realize that basic maintenance was called for–just cleaning the air filter would have cut cooling costs 5 to 15 percent....