Hayes, Jack
November 1987
Saturday Evening Post;Nov87, Vol. 259 Issue 8, p20
Heat pumps are little more than air conditioners that work in reverse during the winter. They take latent heat from the outside air and bring it inside. They use the same compressors, sealed tubing, and refrigerant as air conditioning, and they work on the same principle: condensation absorbs heat, evaporation releases it. The first thing to do if a person is considering a heat pump, is to compare relative energy costs in his area. In Atlanta and Birmingham, for example, natural gas is very competitive. But in rural parts of Georgia and Alabama, and many other parts of the South and West where bottled gas is the norm, electricity is cheaper, making heat pumps more attractive.


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