The Goodman GPG13 is a discontinued packaged gas/electric unit which operated as an electricity-powered air conditioner and a gas-fueled furnace. The GPG13 had an efficiency of 80% AFUE and 13 SEER. The unit was equipped with a corrosion-resistant, aluminized steel tubular heat exchanger and a coil made of refrigeration-grade copper tubing and aluminum fins to maximize the surface area. The cabinet was constructed of heavy-gauge galvanized steel with a powder paint finish to protect the unit and resist corrosion, and the blower compartment was insulated for sound reduction. The GPG13 used the environmentally-friendly R-410A refrigerant.
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