heat pump explained (with boiler)

I found this while snooping around on the internet.  For those of you who keep hearing about heat pumps but still know nothing about them, this is a pretty good visualization.

A fridge but in reverse? The fascinating science of heat pumps – visualised – The Guardian (newspaper in the UK)

…except that boilers are certainly not the norm here in western Canada.  Substitute boiler with heat exchanger.

So I’ve had a heat pump at 520 for over a year now, and it works well.  To be honest, though, we still haven’t had much of a winter yet this winter.  If / when it ever gets down to -40°C, then we’ll actually put it to the test.

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