How BTUs and EERs Work
How BTUs and EERs Work Most air conditioners have their capacity rated in BTUs, or British Thermal Units. A BTU is, generally, the amount of heat required to raise the temperature of one pound of water one degree F. Specifically, a BTU is 1,055 joules, but the first definition is easier to understand in real-life terms. One “ton”, in heating and cooling terms, is 12,000 BTUs. A typical window air conditioner that you find at…
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