3 ms·
Sounds like the units you are describing don't have an efficient (read 'big enough') heat-exchanger which is why they aren't being effective in not-so-low tempe
by simonblack 3y ago
Sounds like the units you are describing don't have an efficient (read 'big enough') heat-exchanger which is why they aren't being effective in not-so-low temperatures. The temperature of the cold-side should not be below outside ambient temperatures if the heat exchanger coils are sufficient.
In other words heat-energy should be going into cold side of the heat-pump (even at a low temperatures) at the same rate as it is coming out the hot-side at high temperatures. Reduce the heat in, and you will reduce the heat out.
- rayiner 3y agoIt’s a typical size for a heat pump in a US home: https://www.amana-hac.com/products/heat-pumps/18-seer-aszc18?bvstate=pg:2/ct:r https://www.amana-hac.com/products/heat-pumps/18-seer-aszc18... My understanding is that improved low temperature performance has something to do with varying the amount of refrigerant in the loop: https://www.mitsubishicomfort.com/articles/keep-warm-this-winter-inverter-technology-for-any-climate https://www.mitsubishicomfort.com/articles/keep-warm-this-wi...