In normal cooling modes portable air conditioners evaporate the collected water and send it outside but just circulating the humidity over and over is a waste of electricity.
Vent portable ac through garage door.
Some portable ac units come with sliding window sliding door kits designed to help you adapt your sliding door area for a vent hose.
One option which seems to be preferred by some people is actually using a wall vent to remove hot air from a portable air conditioner.
Gulrear sliding door air conditioner kit max adjustable length 220cm 87inch sliding door ac vent kit suit for 13cm 5 1inch exhaust hose 4 3 out of 5 stars 434 48 99 48.
Slide your sliding door back far enough to allow for the vent hose.
You can use this method to vent your portable ac unit to the outside or into another room such as a laundry room storage area or garage.
The air conditioner must vent the hot air somewhere.
You ll need a space of 6 7 inches.
Issue of venting the portable air conditioner.
If a window is not an option the other choices would be venting through the roof or wall.
This would require drilling a hole through the side of the garage to fit the exhaust hose.