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Old 07-18-18, 11:12 AM   #7
Lurking Renovator
Join Date: Aug 2014
Location: Grand Rapids MI
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Originally Posted by NiHaoMike View Post
Design a low cost heat pump water heater based on modified window A/Cs?
Not scalable.

What I am doing now is studying using a wood stove coil in the furnace inline with cold water with a flow switch to turn on the fan.

I bought this and will report back with data after it's installed in a test home.
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