Issue of venting the portable air conditioner.
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.
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.
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.
This would require drilling a hole through the side of the garage to fit the exhaust hose.
If you need to run a portable air conditioner without any exhaust vent tube set it to run in dry or dehumidifier mode and connect a garden hose to the top drain port so you can collect condensed water in a bucket or floor drain.
Slide your sliding door back far enough to allow for the vent hose.
If a window is not an option the other choices would be venting through the roof or wall.
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.
Let s say that the vent hose is five inches in diameter.
Garages usually do not have a traditional sliding window which is the most common way to vent a portable unit.