3 ms·
It is. Modern high-efficiency single stage air-source heat pumps will only have a COP of between 2-2.2 in -20°c/-4°F, so your 500W heat pump would output 1000W-
by sitharus 2y ago
It is. Modern high-efficiency single stage air-source heat pumps will only have a COP of between 2-2.2 in -20°c/-4°F, so your 500W heat pump would output 1000W-1200W of heat.
However at 0°C/32°F this bumps to 3.5-3.8, so you'd be getting much closer to the quoted 2000W.
If you're operating in -20°C or below for much of the year a heat pump might not be the best option, but even in Yellowknife that's only three months of the year and it's still twice the heat per kW.
I guess it's a concern if you live in Norilsk?