Thread: water source heat pumps

Hi
I have 2 water source heat pumps that require 18 gpm. They are fed from the same well that feeds my house. The well is a 4" well 170' deep with a 1 hp submersible pump hanging 40 down in the the well.
I would like to either drill another well and use a 1/2 hp pump or put another 1/2 hp pump in the same well to save electric costs.
Can a 1/2 hp pump supply the volume I need? Would a jet pump on a 2 inch well be able to supply the volume?
Thanks,
Eric

You can't get 2 submersibles in 4" casing. If the water level stays higher that 25', you may be able to get a foot valve and 1 1/4" pipe down with the sub, so a ½ HP jet can do the heat pump. If the water level is lower than 25', it won't work.

You could also use a ½ HP sub in the well. This won't build the pressure you need for the house but, will supply the heat pump fine. Then you can use the ½ HP jet pump to boost the pressure when needed for the house. You could also use the ½ HP sub to not only run the heat pump but, also fill a storage tank. Then the jet pump can draw water from the storage tank for the house as needed.

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