Q: I am one of a growing number of Americans with a new mini-split heat pump. I have no idea how to maintain it or use it efficiently. I’ve talked with many other owners and we are all largely in the ...

"There is a quick drop in efficiency as you cross the freezing threshold." ...

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Ductless heat pumps, or mini/multi split heat pumps, are an alternative to radiator or baseboard heating, as well as replacement for window units for cooling. A head unit, or multiple head units, are ...