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Thread: bypassing a heat pump when not in use

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    Join Date
    Dec 2015
    Newington, Connecticut

    bypassing a heat pump when not in use

    Is it beneficial to have the option to bypass a heat pump when not in use. My thought is exposing the heat exchanger to corrosion at all times, however on the other hand I guess left over chemicals would remain. Maybe greater efficiency of the filtration system. Any thoughts?
    16'x34' Kidney 17000 Gallon IG Vinyl liner. Pentair IntelliXF vs pump, Sta-Rite System 3 DE filter. Liquidator, TF-100 Test kit w/ speed stir. Aqua Comfort heat pump, Dolphin Apollo robot, clear solar cover, stamped concrete deck.

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    JoyfulNoise's Avatar
    Join Date
    May 2015
    Tucson, AZ

    Re: bypassing a heat pump when not in use

    This thread might interest you - Bypass for heater

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    ps0303's Avatar
    Join Date
    Jul 2011

    Re: bypassing a heat pump when not in use

    It is beneficial to have an external bypass in case you need to work on the unit or if it should spring a leak. There are many many systems with no external bypass and the units last just as long. Just keep your water chemicals adjusted correctly and you'll be fine.

    A word of caution: When working with gas and electrical you might want to consider a licensed contractor. Consider the value of your life and others around you.

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    bdavis466's Avatar
    Join Date
    Aug 2014
    Riverside, CA

    Re: bypassing a heat pump when not in use

    I have a bypass on my heater primarily for efficiency gains (which are minimal [Edit - i"ve found this to not be true according to THIS]). I installed an automated valve that I have scheduled to open a couple times a week to allow a water exchange within the heater and set up so it is impossible for the heater to fire without the bypass valve activated.

    What corrosion are you referring to? If you water chemistry is that far out of balance, then damage will be done to more than just the heater.
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