Quote:
Originally Posted by Ormston
As the outside temperature falls you will get a lower and lower the COP will also fall until it is cooling not heating the house.
What you need to figure out is what outside temperature this will work down too before becoming useless.
Steve
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Not quite in this instance. Since the unit is working solely indoors, it is also using heat from other sources. That outside air is first warmed before it hits the unit. It's measured COP should be about what it is rated at.