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Geothermal/Water Source

Look for the Leaf: R-410A is called an environmentally-friendly refrigerant because it does not contribute to the depletion of the earth's vital ozone layer, which provides a protective barrier against the sun's harmful UV rays. Soon all refrigerants used around the world will be replaced by non-ozone depleting refrigerants such as R-410A, which is already in use in many Comfort-Aire models. Look for equipment marked with the leaf, signifying that it's charged with R-410A.