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2answers
5k views

DIY pool heater - best methods? [duplicate]

Possible Duplicate: How can I efficiently heat a pool? I have an in-ground pool at around 20,000 gallons and I live in the northeast (Maine). My pool gets direct sunlight for about half ...
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7answers
6k views

How can I efficiently heat a pool?

Continuously heating a pool can be expensive and the best ways to lower the cost are to have a cumbersome pool cover in addition to the equipment needed (solar or an AC-like heat pump). There must be ...