What is the hspf of the most efficient air-to-air heat pumps

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Reference no: EM131373985

1. What type of heat pump is the most common, and why?

2. What is the relationship between air-to-air heat pump heating capacity and outside air temperature?

3. What is a dual-fuel heat pump? What is the HSPF of the most efficient air-to-air heat pumps?

Reference no: EM131373985

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