geothermal on domestic well
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  1. #1
    Join Date
    Mar 2008
    Posts
    71

    geothermal on domestic well

    Is it safe or possible to install a wshp on my existing well used for domestic water? I think I saw this done about 20 years ago at a house. I am getting ready to replace my old lp furnace wiyh a heat pump, and was wondering if this was possible, or more accuratly is it safe? Can I dump the return water back down the well? Well is 700 ft deep with water at about 500ft.

  2. #2
    Join Date
    Jun 2008
    Posts
    80
    Was talking to a guy recently who's done boat loads of air and ground source heat pumps (he's the only guy I call for problems on my York BTW).

    He said setups that weren't closed loop tended to required more maintenance depending on water quality issues that might plug the lines and heat exchanger.

    I can't speak to the safety of mixing the return water back into drinking water supply, but that is a very important question IMHO.

  3. #3
    Join Date
    Apr 2005
    Location
    NE PA
    Posts
    698
    Water quality issues are one thing, the other is the cost of running the water pump and the capacity of the well. At 3 GMP per ton, that can be a lot of water from your well.

    paul

  4. #4
    Join Date
    Feb 2007
    Location
    out in the country
    Posts
    633
    Quote Originally Posted by tecman View Post
    Water quality issues are one thing, the other is the cost of running the water pump and the capacity of the well. At 3 GMP per ton, that can be a lot of water from your well.

    paul
    What he said! Save yourself a headache go closed loop
    I never let schooling interfere with my education... Mark Twain

  5. #5
    Join Date
    May 2004
    Location
    wiggins
    Posts
    77
    To pump back in to the same well will stir up the mud and discolor your water. As stated a closed loop is better but it is expensive if you do not have a pond.

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