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Guide to Home Heating and Cooling - Energy

Guide to Home Heating and Cooling - Energy

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Performance Factor (HSPF) is the ratio of the total heat output of a heat pump during the normal heating season divided by the total energy consumed during that period. ENERGY STAR qualified heat pumps have a HSPF of eight or greater. Furnaces. Furnaces use fuel (natural gas and oil) to create heat. The Annual Fuel Utilization Efficiency (AFUE)

  Performance, Pumps

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