The balance point of an air source heat pump Is the temperature at which
A) the system low side and high side pressures are the same
B) the heat pump cooling capacity matches the heat pump heating capacity
C) the cost of operating the heat pump is the same as the cost of operating a fossil fuel furnace
D) the heat pump heating capacity just matches the building heat loss
D
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Fill in the blank(s) with the appropriate word(s).
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What will be an ideal response?
What material are electric heater coils often made from?
What will be an ideal response?