2 ms·
> A 500W heatpump will produce as much heat as a 2000W resistive heater. Isn’t this highly dependent on the outside temperature?
by lotsofpulp 2y ago
> A 500W heatpump will produce as much heat as a 2000W resistive heater.
Isn’t this highly dependent on the outside temperature?
- sitharus 2y agoIt 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?
- floxy 2y agohttps://www.engineeringtoolbox.com/docs/documents/1117/cop_heat_pump_theoretical.png https://www.engineeringtoolbox.com/docs/documents/1117/cop_h...