"Micro” heat pumps aren’t as powerful as whole-home versions, but they’re portable, plug into a 120V outlet — and they’re increasingly effective in the cold.
TL;DW units with one hose pull interior air over the coils to do the energy exchange, then blow that air out the hose. This makes your space become a negative pressure zone and the air is replaced with unconditioned outside air which must be conditioned.
Beware the one-hose energy suckers!
https://m.youtube.com/watch?v=_-mBeYC2KGc
TL;DW units with one hose pull interior air over the coils to do the energy exchange, then blow that air out the hose. This makes your space become a negative pressure zone and the air is replaced with unconditioned outside air which must be conditioned.