The attic i want to vent into is above my garage, it is pretty big (2 car garage) and has 2 passively vented hoods on the roof.
Venting portable ac to attic. Portable air conditioners send as much moisture out with the exhaust air as they can. They are designed this way to minimize. A hole must be cut in the ceiling panel to vent the portable air conditioner to fit the hose.
Set up the unit relatively close to a traditional window attach. Venting a portable ac into an attic. Place the ac unit right in front of the hole you’ve made, with its exhaust hose or vent passing through the opening you cut into the exterior wall.
The shorter the hose, the more challenging it will be for you to vent it to the attic. It's not a great idea. It is possible to vent a portable air conditioner into an attic, however, this depends on the size.
First, attach the vent hose to the returned of the ac. One is ventilating to the attic. The next step is to connect the exhaust hose to the exhaust.
Every cubic inch of air you blow out of the room into the attic has to be. Smaller attics will heat up quickly due as hot air is vented from the portable air conditioner,. I have a dyson cooling fan and that thing cools down a room like a mini air conditioner.
If not, obviously, the portable air conditioner won’t be able to remove hot air during operation. To vent your portable air conditioner through a wall, you essentially cut a hole in the wall and attach a venting kit to it. Say you use a single hose portable air conditioner.