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Originally Posted by Xringer
Anyways, this is heat, pumped from the air outdoors, without any electrical heating elements for boost..
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Not directly at least.... They do have defrosters which is why the data has this footnote
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Above data does not take Defrost Operation, Overload Prevention Protection, and/or Cold Air Prevention Protection during heating operation into account. For this reason, the value may vary from the actual heating characteristics.
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Page 41 explains the frost detection and defrost cycle (up to 12 minutes max).
I like these cooling systems - much more efficient than window units and are scalable
But that said - electric heating elements have less losses than any heat pump
