this post was submitted on 01 Aug 2024
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Two tubes still means it pulls in hot air from the outside that it then needs to cool down first. The split ACs are basically the only sane ones (but expensive).
While it does pull in hot air from outside, it is not cooled, but rather heated. AC units are divided with a cool side that lowers temp in a room and a hot side that extracts heat.
Warm air is used by the condenser (a radiator that collects the heat from the room) and sent back outside hotter than it sucked in.
The air on the cold side of the AC unit is recirculated into the room.
So they have two airflows? Then I assume in contrast to the ones with just one exhaust they need two fans? One for circulating (and cooling) the air from the room and one to circulate the air from (and to) the outside?
Then I assume that would make them even noisier then the single exhaust ones, right? (More moving parts.)
Yup, two fans. The increased noise is compensated by them not needing to run as much due to the increased efficiency.