My pump heats my outdoors pool in summer and the house in winter. Its more usual to have a small heat-pump just for the pool, though. These are surprisingly c

My pump heats my outdoors pool in summer and the house in winter. Its more usual to have a small heat-pump just for the pool, though. These are surprisingly cheap, considering the premium on all pool parts generally. I mean, a pool roof made of plastic costs 3x or 4x more.