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Digging deep into tax breaks, front yard to unearth cheap energy

No matter what climate chaos occurs aboveground in the Washington area, the temperature a few feet below the surface is always in the mid- to upper 50s. Geothermal heating and cooling saves energy by tapping that constant temperature to warm a house in winter and cool it in summer.

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Article | Just before Thanksgiving, my family swore off fossil fuels to heat and cool our 4,400-square-foot suburban home. Instead, we're relying on the Earth itself: We've converted to geothermal energy, which taps the constant temperature of the ground below our house. ΒΆ The project took us into complete...

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