Q:

What size pool heater do I need?

A:

Quick Answer

The size of the pool heater needed to effectively heat a pool is based on the size and shape of the pool as well as the climate. A swimming pool heater is rated according to its British Thermal Unit output.

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What size pool heater do I need?
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Full Answer

One BTU can raise the overall temperature of 1 pound of water by 1 degree Fahrenheit. This means that a pool will be heated faster by a pool heater that produces a higher number of BTUs. The number of BTUs required to heat a pool is based on the pool's surface area, the degrees the temperature needs to rise and the heater's efficiency.

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