How do outdoor swimming pools lose heat?
Outdoor swimming pools lose heat in a variety of ways, but evaporation is by far the largest source of energy loss for swimming pools. The reason evaporation has such an impact is that evaporating water requires tremendous amounts of energy. It only takes 1 BTU to raise 1 pound of water 1 degree Fahrenheit, but each pound of 80F water that evaporates takes away a staggering 1048 Btu’s of heat out of the pool. Covering your pool when it’s not in use is the single most effective way of reducing pool-heating costs.
