How To Vent A Portable Air Conditioner

Science has progressed and granted us many inventions that defy our common sense and make our lives easier. We could never have thought about soaring the skies, or traversing the sea, we couldn’t dream of tall towers and how we could climb them in mere seconds. But, we are living life beyond the dreams of our predecessors. And things are progressing even now. One of such tools that make our life easier is the Portable Air Conditioner.

The machine that cools the room we stay in, the air conditioner. A complex machine which has been simplified into 3 sections: compressor, condenser and evaporator. Essentially the AC works in the same way as a fridge, the only difference is that it cools a greater area i.e. the entire enclosed room or space. In layman’s terms the AC uses a cooling agent, a chemical which continuously converts from liquid to gas and vice versa, without any mass being lost in the process. This interchanging of the agents’ state is responsible for the heat being absorbed from the inside of the room and then being released to the outside. Essentially the AC has two sections, the primary part is used to suck in heat from the room and release cool air, while the part that stays outside, is responsible for releasing the heat to the environment.

As technology would have it, progress is mandatory. The portable air conditioner is one product of such progress. Because the AC consumes too much space and fitting requirements are quite high maintenance, the portable air conditioner was invented. The PAC is run on the same principle as an AC but it’s a single unit mechanism, where there’s no secondary unit serving as an exhaust on the other side of the wall. Consequently, there, however exists a need for an exhaust so, an exhaust hose is used to enable the heat to escape. Thus, the portable conditioner requires positioning near a wall outlet, a window or a door.

When the portable AC cools a room, it takes in the heat from the room and extracts moisture too, both of which need to be removed and outside of the room to boot. If the exhaust is placed inside the room, the escaped heat will be released into the room as well as the absorbed moisture. Even without knowledge about the laws of thermodynamics, it can be concluded that the temperature won’t change and the AC will just be running without any proper result to achieve. More importantly, the moisture might damage the walls too, as a result.

Sliding Doors

Regarding ventilation or exhaust on the other side of the door, a kit should be installed if wall outlets are not preferred. There’s a window outlet kit, provided with the AC which can be attached to any window and the hose can be attached to the kit and the room stays airtight. In case of doors, a kit can be bought, Sylvian kits would be recommended, and attached to the door which consequently can be attached to the hose of the Portable Air Conditioner. Once attached, it can be removed easily too, when one leaves the house of doesn’t require the use of the AC. Though the door cannot be fully closed, the room still stays airtight because of the kit which can be fitted to the size of the door.


The Portable air conditioner requires an exhaust and the casement window poses a viable hindrance to that option. But, there’s an easy solution to that problem. The answer is polycarbonate. Aluminum framing on the polycarbonate similar to the size of a window which is roughly 40 inches, can be a used for the window. And, a small round cut to the size of the kit given, enables us to fit the kit and can be used to attach the exhaustion hose to the kit. This allows casement windows to allow fitting of kits for the Portable Air conditioner.

Without Options

In case of a situation where there persists an absence of windows, in order to vent the Portable Air conditioner multiple options are available. For example, the hose can be vented directly through the wall to the outside, or it can also be opened to the garage or storage room where visitors are limited and not frequent. Though, that would require minute insulation to ensure air tightness. Other options include dropping the hose through a panel ceiling, e.g. to the server room in case of floors or through dryer vents in case of the presence of ventilation.

Through wall

With all options lost the last resort would involve a minor reconstruction procedure. That is a hole needs to be made next to the wall where one’d place the Portable air conditioner, in order to vent it. This option comes with its fair share of problems like the landowner might not allow it or the concrete and brick walls are too thick to cut into. But, other than that, it’s pretty simple. All we need to do is break in a certain part of the wall to the other side, roughly a bit bigger than the size of the hose. Put the hose through, and seal it. It can be sealed permanently or temporarily, depending on future plans.

Dryer Vents

In America, dryer vents are mostly 4 inches in diameter, but that isn’t the case for all the dryer vents. Though not recommended the hose can be fit into the dryer vent and it allows exhaustion of the heat and moisture to the environment. But, most hoses that come with portable air conditioners are of larger diameters, so it might not be applicable for all forms of rooms.


In case of an office space with no windows to spare and the best option is to avail to a drop ceiling vent kit, recommended providers are compact appliance. The first step involved removing a tile from the drop ceiling and replacing it with the insulated metal tile that comes in the kit. The second step will be to connect the insulated vent hose, which also comes with the kit and allows the no heat to escape. The final step would be connecting the product provided hose in the kit and enjoying the cool office.

With that said, the portable air conditioning is a fine replacement for two part air conditioners that require you to go out of your way. And, the only issue with portable air conditioners was their need for venting. However, now we know of every possible way to vent, from windows and doors to ceilings and floors. And, it doesn’t require experienced help.