We have one house here with a small pool and an electric heater, and another house with a large pool and a solar/gas heater. If the pools is small, the electric works fine. For a larger pool it could get expensive in the winter. For our larger pool the gas heater didn’t turn on until a few weeks ago, the solar heating it until then. Now the gas just makes up for the non-sunny days. We swim year-round, and want the pool above 88
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