If you’re planning to purchase a new air conditioner before summer arrives, you might find yourself inundated with information. To make an informed decision, however, there are three basic terms that you’ll need to know: SEER, EER and COP. Once you have these three under your belt, your choice will be a lot easier.
Seasonal Energy Efficiency Ratio (SEER)
The SEER of an air conditioner or heat pump is calculated by the ratio between the cooling output during the cooling season and the total electric input during that same period. Equipment rated with a higher SEER will be more energy-efficient than systems with lower ratings, though the higher-rated systems will cost more to purchase and install. The current federal minimum SEER for a split-system A/C or heat pump is SEER 13.
Energy Efficiency Ratio (EER)
An A/C’s EER is the same as its SEER, except that it doesn’t rely on the cooling season for its rating. This is a measurement of the same ratio (cooling output vs electric input), but is rated based on cooling efficiency during a particularly hot day. Like SEER, a higher rating indicates a more energy-efficient system.
Coefficient of Performance (COP)
The COP is very similar to the SEER and EER measurements. It compares the amount of power input to that of power output. Like the other two terms, a higher rating indicates a more efficient piece of equipment.
Using These Terms Wisely
Although there are a number of factors to consider when purchasing a new A/C for your home, these terms should be used to help make your decision. Whatever you choose, make sure that you’re only considering equipment that is backed by Energy Star. If possible, purchase a system that meets the more stringent requirements of Energy Star’s Most Efficient program.
For more expert advice on SEER, EER and COP, or if you have any other home comfort issues, contact the friendly professionals at Ace Hardware Home Services, Inc. We’ve been serving the HVAC needs of Dayton, Springfield and the surrounding area since 2000.
Our goal is to help educate our customers in Dayton, Ohio about energy and home comfort issues (specific to HVAC systems).
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