4 ms·
Mechanically, there’s a reversing valve and defrost elements and controls to turn an AC into a heat pump. (So, it’s small, but not zero, mechanical differences.
by sokoloff 3y ago
Mechanically, there’s a reversing valve and defrost elements and controls to turn an AC into a heat pump. (So, it’s small, but not zero, mechanical differences.)
- tharkun__ 3y agoThabks for the assist on the tech! And I can definitely attest to the heating element aka defrost. We don't have actual resistive heat in the pump as we have the baseboards anyway but the lower the outside temp goes the more it has to defrost the outside as it freezes up. As winter goes by, icicles form underneath the outside unit where the defrosted ice drains out and refreezes. It's actually amazing that the thing can extract heat from -10C air outside to heat up air that's already 21C inside to heat it up even further!