I am wondering if I should get a heater. I live in southeast Pennsylvania. Pools typically open in May here and close by September at the latest. Really, "good" swimming is only from mid-june through August on average.
I just asked my pool salesman on the cost of a heater. He says a gas heater will go for about $2,600, but are not as efficient as a heat pump which are double the price but that a gas heater will heat quicker. I don't see myself heating the pool all during the season....probably just in May and September to extend my season. I'm leaning towards gas.