Air Conditioning portable unit

Air Conditioning portable unit

This topic has 3 replies, 3 voices, and was last updated 13 November 2026 at 10:54 by BOB BLACKSHAW 1.

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13 November 2026 at 09:15 #874179
BOB BLACKSHAW 1
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@bobblackshaw1
Hello all. I’m looking ahead to next years heatwave and I’m looking to buy a portable AC unit for a 5m x 4m x2.5 m room. Theirs so many to choose from that a recommended unit would help please. A Meacocool is a top unit recommended by A I but the reviews vary from good to bad. They also come with dehumidifiers combined, I have a dehumidifier which is bullet proof around 45 years old .

Thanks Bob
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13 November 2026 at 09:46 #874183
howardb
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@howardb
We have been using a Comfee 7000 btu portable aircon unit for about 4 years to reduce the temperature of our main bedroom to a reasonable 20 to 22 C temperature during heatwaves in north-west France, it’s been 100% reliable.

It came via Lidl and cost about €200 together with the vent kit.

But during the last heatwave this year we had to run it 24 hours a day/night for 4 days straight to keep the temperature down to reasonable levels, so we bought a bigger 12000 btu unit which is capable of dropping the temperature from 26-27 C to the 20-22 C level in about 2 – 3 hours, it came from Amazon and is quieter than the 7000 btu unit.

The window vent kits supplied are a PITA, I made a plywood blank to carry the 150 mm dia warm air outlet hose fitting in the window opening – that will depend on the sort of windows you have, our’s open inwards here.

The moral of the story is don’t buy a small aircon unit and hope it will cope when it’s really hot.
13 November 2026 at 10:39 #874187
Bazyle
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@bazyle
Bear in mind that all the one that have a hose going out the window are expelling air from the room/house. That means new air has to come in somewhere and that will be the hot air you are trying to escape from.
There are a few that mount more permanently in a window so can run external air over their heat exchanger and seal the room from the outside air. This is the classic style that has been around for a century in hot countries.
For a situation whre you are not going to be moving it around the house look for the mini-split type.
13 November 2026 at 10:54 #874188
BOB BLACKSHAW 1
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@bobblackshaw1
Thanks for the reply, that didn’t come to mind what air goes out hot air comes in.

Bob
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