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Old 09-25-17, 01:30 PM   #29
Supreme EcoRenovator
Join Date: Sep 2012
Location: Vancouver Island,Canada.
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The gains come from the COP it will always be there 24-7 the small influx of air will not cancel out the heat pumps Cop.

This might help clarify losses vs gains

Many houses have a heat exchange for fresh air intake that can run as high as 70 CFM

People heat their house fine with or without COP from a heat pump to supplement the heat exchanger losses.

I look at it as the air infiltration is just one loss to overcome and part of the heating bill as is conduction threw the walls floor and roof it all has to be overcome.

Which is why the heater is used in the first place. In short it will run more often but still save money over electric baseboard heat.

To overcome any losses by air in or conduction out the heat pump runs *longer* to heat the space the saving grace is the 2.7 COP it has while running

Again if I understand it correctly

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