[CHICAGOFARMER]

Its called a Water Furnace and provides both heating and cooling. We have four 200 foot wells with a closed loop system connected to a heat exchanger and compressor. We put it in when the house was built last year. Works best as an AC since incoming water temp is 59-60 F and getting chilled air from this is easy (and cheap).

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lets see 4 wells times 200 feet each times 16 dollars per foot equalls 12,800 dollars divided by 120 (30 years summer months only) months equals another 3.55 cents per day. 3.55 plus 1.56 equals 5.11 per day or 153.30 dollars per day. That is more that I pay for 3000 sq feet.

[Eric in the Ozarks]

Our power bill was $45 for July.