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Annual Fuel Utilization Efficiency. A measure of a gas furnace’s efficiency in converting fuel to energy—the higher the rating, the more efficient the unit.
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Call Us Now: (641) 753-3524
Call Us Now: (641) 753-3524
Call Us Now: (641) 753-3524
Annual Fuel Utilization Efficiency. A measure of a gas furnace’s efficiency in converting fuel to energy—the higher the rating, the more efficient the unit.