I don’t get it. How is cold, even freezing air turned into heat? How is it less energy consuming than other heating systems?
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Just want to add a clarification to the energy efficiency discussion: “more energy efficient” does not necessarily equate to “reduced carbon emissions” unless you have a relatively clean grid mix. If you switch from natural gas to a heat pump but your grid electricity comes from mostly coal, then you’ve take a step backwards. If carbon reduction is your aim, look into your grid mix using a tool like eGrid to see if an air source heat pump makes sense.
I know the OP didn’t ask about carbon, this is more for people who might be looking into from a carbon standpoint.
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