Hello, It will depend on your surface area and how airtight the room is. Personally, 50m2 is not very airtight, but with a fabric window kit for the exit, it takes 2 hours for the cold to be felt everywhere.

150 mm

Thank you for the hint. A correction request has just been sent out.

For every air conditioner, the warm air must be drawn out of the window to be cooled using the exhaust hose. There is also a window kit to buy that fixes exhaust hose of the air conditioning drain in the window frame.