It might surprise you to know that buying a bigger room air-conditioning unit won't necessarily make you feel more comfortable during the hot summer months. In fact, a room air conditioner that's too big for the area it is supposed to cool will perform less efficiently and less effectively than a smaller, properly sized unit. This is because room units work better if they run for relatively long periods of time than if they are continually, switching off and on. Longer run times allow air conditioners to maintain a more constant room temperature.
Sizing is equally important for central air-conditioning systems, which need to be sized by professionals. If you have a central air system in your home, set the fan to shut off at the same time as the cooling unit (compressor). In other words, don't use the system's central fan to provide circulation, but instead use circulating fans in individual rooms.
Copyright U.S. Department of Energy, www.eren.doe.gov.
For more information, or if you have questions about heating and air conditioning, contact Aire Serv at (573) 778-9007 or by email firstname.lastname@example.org. Or, visit their location at 1403 W. Highway 53 in Poplar Bluff, Missouri. Dexter residents may call (573) 624-8866.