Remember that if you move the coil to the outside, then your fridge will effectively be a heat pump that removes heat from the kitchen. In other words, the refrigerator may use less electricity, but the heating system will need more energy to make up for the heat that the house has lost.
During a heat wave in the summer this is OK, since your fridge will act as a small air conditioner for the kitchen, though at the cost of slightly increased electrical usage.
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Ecorenovation - the bottomless piggy bank that tries to tame the energy hog.
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