3 ms·
They do work, but with decreased efficency, which in the end line has an effect on total power output (not enough to satisfy heating capacity/needs of user’s in
by alekq 8y ago
They do work, but with decreased efficency, which in the end line has an effect on total power output (not enough to satisfy heating capacity/needs of user’s installation) and increased energy consumption.
Most of modern heat pumps (air to water) can work without issue all they way to -15/20* C.
- jhallenworld 8y agoYeah, they have two-stage pumps for cold weather. I thought about it when I upgraded my heat: gas furnace and electric heat pump had about the same running cost, but heat pump was much more expensive to install and much less reliable / more expensive to service.