I figure if their numbers are correct it would pay for it's self in 3 years, my co-home-owner likes the idea of have a dry basement so it would eliminate the need for a dehumidifier down there in the summer and help keep it cooler down there in the summer as well, in the winter we have to heat the house anyway, so it's either the electric heat leaching out of the water heater or it's the cheaper natural gas.
I'm sure that for $700 in parts you could get something that would heat your water, but it might cost alot more making units that don' work, this one they claim can take as little as an hour to install and that has alot of appeal that it's a complete ready to install unit that is self contained.
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