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Thread: Is my heat pump big enough?

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    Join Date
    Nov 2015
    Lawrence, KS

    Is my heat pump big enough?

    We are building 20x40 inground vinyl liner, 30,000 gallons, and are equipping it with a Pentair 125,000 BTU heat/cool pump. We hope to use the pool from May thru October in Kansas. I wanted to make sure the heat pump was big enough to heat the pool to 85-88 degrees on a regular basis. Any thoughts or feedback are greatly appreciated.

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    mas985's Avatar
    Join Date
    May 2007
    Pleasanton, CA

    Re: Is my heat pump big enough?

    The heat pump will raise the water temperature about 0.5 degree per hour. So on demand heating will take quite awhile but if you run the heater every day, then it should be able keep up with the heat loss. It just might cost you a fortune though.
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    JoyfulNoise's Avatar
    Join Date
    May 2015
    Tucson, AZ

    Re: Is my heat pump big enough?

    A good solar cover (bubble type) will help you a lot. An opaque auto-cover would be good too but that adds a lot of cost to a pool build. As with any type of heating method (gas or heat pump), evaporative heat loss is the biggest driver of how well you can maintain a particular water temperature.

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  4. Back To Top    #4

    Re: Is my heat pump big enough?

    Do you have natural gas available?

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