So funny thing about that… It doesn’t.
It creates a negative pressure, which draws in outside air through openings in the apartment/house.
It still cools of the air inside, but this does lower the effective cooling a bit.
All 'mobile' aircon units are extremely noisy and extremely heavy!
If you're just looking at using it in only one room, maybe look at the wall mounted permanent ones. I regret not doing that in hindsight.
The one I bought was a decent one from John Lewis and had a super silent mode, which dropped it from as loud as a passing train, to as loud as a diesel taxi idling in the corner of the bedroom. A Meaco MC8000. Works really well apart from the noise.
They're expensive now because it's hot. I got one in winter. A 8000btu meaco for £230. Now a similar unit is £350 or more because everyone wants one.
I can put this in the office, the living room, the bedroom, the kids room as needed.
Obviously it's not as good as "proper" AC but it does the job.
At some point I will install proper AC but I reckon for 4 rooms that's probably getting on for 2k and it's not something one can order on Amazon and have the next day.
>ProBreeze
Check their price right now.
This one is Meaco which is usually considered a better brand (I have Probreeze bought for £150 on sale).
Maybe less noise as this one is 52 dB.
Have a meacocool for a fair few years. Has lasted well through several heat waves. It is loud but that is more bearable than the heat. However my wife complains about being "too cold" with it on during heatwaves so I can't bloody win
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