Can You Vent A Portable Air Conditioner Into Another Room?

Are you struggling to find the perfect spot to vent your portable AC, especially when you’re faced with the challenge of not having a window in your room?

You’re not alone, and I am here to help! Welcome to my comprehensive guide that will answer your question if you can vent a portable air conditioner into another room.

This article is designed to provide you with valuable insights and solutions for those unique situations where traditional venting options just don’t cut it. As we dive into the world of alternative air conditioning, you’ll discover innovative ways to keep your living space comfortable and cool, even without a window to vent through.

So, buckle up, and let’s explore the possibilities together!

How to Vent A Portable Air Conditioner Into Another Room?

Here are some of the best ways of venting a portable air conditioner into another room.

Read more: Can You Vent a Portable Air Conditioner Through A Screen?

Through Ceiling

All portable air conditioners have a vent hose that helps in the venting process. If you have a long exhaust hose, then this will be very favorable for you. Even if you don’t, you can always make an extension that’ll help you in this process.

To do this, you’ll need a false ceiling as well. Remove a tile from the false ceiling, run the tube from one room, and route it to another. If you want to create absolute isolation, then you can cut that specific tile so it sits around the tube tightly.

This is indeed an alternative way of venting portable air conditioners into another room. It will help you route the exhaust tube a long way without disrupting the basic aesthetics of the indoors, and it’ll get the job done properly as well.

The only drawback with this is that you’ll need a false ceiling to do this.

Through Wall

If you don’t find a permanent hole in the wall between two rooms, then you may try this method. However, remember that this isn’t a DIY method, and you’ll need to hire a professional to get this done.

In this method, you’ll have to create a considerable size of the hole in the wall that’s joining the room in your house the AC will be in, and the one that’ll serve as a dump. Once the hole is dug out, you need to channel the exhaust tube through that hole, into the other room, and plaster the excess area surrounding the tube.

This will create good isolation, and it’ll help you vent a portable AC thru the wall into the next room. However, there are certain drawbacks to it. If the wall isn’t well isolated, then chances are that the warmth and the moisture will flow back into your room. Then again, you’ll need to go to great extents to hide the tube in the other room.

Should You Vent a Portable Air Conditioner into Another Room?

No, you should not. The short answer is that you should not vent your AC into another room if you can find any other solution.

Why? To answer that, we need to consider two issues.


You can vent a portable AC to the next room through certain methods. However, most internal walls aren’t built with proper heat isolation. If you’re venting warm air to the next room and filling up the room with cold air, chances are huge that some of that warm air will seep back into the room you want to condition.

This will create a situation where the AC will have to work against itself, and it definitely will minimize the efficiency of your AC. Thus, at the end of the day, you’ll find that your AC needs to work longer and harder to keep your room at the determined temperature.


Another major problem is moisture. Air coolers not only remove heat from one space and dump it into another, but it does the same with moisture as well. When you’re venting a portable air conditioner into another room, it will take a considerable amount of moisture from one room and dump it into the one it’s being vented to.

This in turn will double the moisture of the room that will show up as condensation, and it’s going to cause mold problems.

Can You Vent A Portable Air Conditioner Into The Garage?

Yes, you can certainly vent a portable air conditioner into the garage if you want to, but should you?

Like any other room in the home, the wall of the garage isn’t well isolated either. So, the things that you would experience if you had vented the hot air into another room, you’d experience the same if you’d vent the AC into the garage.

This is why we don’t recommend venting a portable AC into the garage at all.

Read more: How to Install Portable Air Conditioner in Sliding Door?


As you can see, there are multiple ways of venting a portable air conditioner into another room of your house or apartment. However, I don’t recommend doing this at all because it puts your entire home in a risky position. It will make your home warmer and it’ll also increase mold growth. So, I highly discourage this.

Related Articles

Leave a Reply

Your email address will not be published. Required fields are marked *