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When you decide to sell your home, geoexchange is an added asset. According to a study conducted by the U.S. Department of Housing and Urban Development, home value increases by about $20.00 for every $1.00 reduction in annual utility bills. Ground heat exchangers are also maintenance free and will last 40+ years, as long as two or three conventional furnaces.
A geothermal system relies mostly on energy from the earth, which is free. The system itself is over 300% efficient, and compared with the average inflation rates for other energy sources, geothermal is the least expensive, and the most stable.
