Have you ever wondered what happens if you don’t vent portable air conditioner? I have heard many people asking me this question. 

Portable air cooling systems are very convenient to use. It is perfect if you own small space. You can move it here and there and everywhere around your home. But do you know what happens if you don’t vent the portable air conditioner properly? Today we will learn about that. 

After reading this article, I hope you will get a proper answer to your question. So without any further ado, let’s get started. 

What Happens If You Don't Vent Portable Air Conditioner

What happens if you don’t vent portable air conditioner? 

if you don’t use an exhaust hose for venting, your portable air cooling system will not be able to cool down your home even if it is switched on.

How Does A Portable Air Conditioner Work?

Do you know how a portable air cooling system works? Today let’s learn about that first before going into the further conversation. 

Just like any other air cooling system, portable air cooling systems also absorb the warm air from your room to its components. Its motor system then cools down that air. After cooling down the air through the refrigerant, it starts circulating the air all around the room. 

You may now ask, do portable aircon not release warm air outside? The answer is, they do remove warm air and moisture outside. After cooling down the room, the extra leftover air and water go outside the component using the hose. 

What Does It Mean By Ventilation? 

Ventilation or ventilating is a process used for exchanging or replacing air to outside so that your inside air quality stays top-notch. This includes temperature control, oxygen replenishment, removing the bad smells, heat, impurities, dust, humidity, carbon dioxide, airborne bacterias, etc. 

By using ventilation, you remove all the harmful things which can be found inside your room’s air, so that you can inhale fresh air by staying inside of your house. 

Do Portable Air Conditioners Have To Be Vented Out Of The Window?

If you want to buy a portable cooling system, then let me tell you one thing, a portable aircon needs to be vented. A portable aircon uses an exhaust hose for venting. And for venting a portable aircon, you need a window or a wall where you can install the exhaust hose. 

You have to install that exhaust hose facing outside so that after using that aircon, you can vent down the moisture and warm air throughout that hose. 

Can You Use A Portable Air Conditioner In A Room With No Windows?

A portable air cooling system and a window air cooling system are almost alike. The work is the same, but they have so many similar qualities. 

Do you know you can use a portable air cooling system in a place with no windows? Yes, you heard me right. You can use a portable aircon in an area with no windows. Now you can ask me what about venting? 

You can vent it through the door or the ceiling, or the wall by using an exhaust hose. If you have a window or vent kit, you can also move it from one place to another. 

Where Does The Water Go In A Portable Air Conditioner?

You don’t need to add extra water to a portable air cooling system. A mobile air cooling system can build water inside. When a portable aircon absorbs warm air, it creates condensations. Now you can ask me where the water goes then? 

Well, the water is then held into the internal water reservoir. The aircon uses it whenever needed for its cooling process, and the extra water goes outside through a hose. 

Can You Use A Portable AC Without Venting?

You can easily use a portable aircon without venting if it is only in a dehumidifier mode. Otherwise, it would be best if you did not use it as it is. If you use your portable aircon in a dehumidifier mode, it will release warm air and raise your mood’s temperature. So using a dehumidifier mood is applicable if it is winter or so. 

Read more: How Do You Insulate Portable Air Conditioner Exhaust Hose?

How Long Does A Portable AC Last?

If you are willing to buy a portable aircon system but wondering about how many years it will last, then I have an answer to your question. 

A portable aircon system can last about 5 to 10 years. You can move a mobile aircon system anywhere in your house, and this is the reason why a portable aircon system does not last longer than any other aircon system. 

What Happens If You Don’t Vent Your Portable Air Conditioner?

If you can not drain water properly from your portable air cooling system, the system might get overloaded, leading the air cooler to switch down and not start. 

Can You Leave A Portable Air Conditioner On All Day?

Even though you can leave a portable aircon on all day long without any problems, there are still some demerits for doing so. For example- 

  1. It can be harmful to the environment.
  2. If you use it all day, it will be energy wastage. 
  3. Your portable aircon can be the reason for the high energy bill at the end of the month if you leave it on all day. 
  4. Its size can also be a problem. If it is too big for the room, it will start switching on and off every few minutes. If it is done, it will create a result for high energy consumption. It is called short cycling. And if your aircon starts short cycling, then it can never go into its highest efficiency. 
  5. If it is too small for the room, it will work more than its ability to cool down your space. Again it can be the reason for high energy consumption. 
  6. You need to do maintenance now and then. 
  7. Using a portable aircon all day long can also reduce the machine’s lifespan. Etc. 

Do All Portable Air Conditioners Need To Be Drained?

Not all portable aircon need to be drained. If you buy certain types of mobile aircon systems, then you don’t need to get tensed about draining water out of your mobile aircon system. Those types are- 

  1. Edgestar. 
  2. Avallon. 
  3. Koldfront.

These types of aircon don’t need to be drained because they use an exhaust system to drain condensations built during the cooling process or dehumidification. And about the humidity and warm air, these are vented throughout the exhaust hose. 

How Long Can You Run A Portable AC?

There is no time limit for using a portable air cooling system. You can leave it on the whole day, or you can use it whenever needed for a short time. It all depends on you. But there are some pros and cons of using a machine for the whole day and a short period. 

If you leave your portable aircon system on for a whole day, then it will raise your electricity bill a lot. Then it will also lower down the lifespan of its parts and the entire system. It can also be very harmful to the environment etc. 

On the other hand, if you use it for a short period, it will save you money and be less harmful to the environment. It won’t also lower down the lifespan that fast. We all know a portable aircon can be run only for 5 to 10 years which is the shortest timeline from any other aircon. So using it for a short time can be beneficial. 

Disadvantages Of Portable AC? Is It Bad For You?

There are some disadvantages behind all machines or devices. The same goes for aircon. Here are some known disadvantages of using a portable aircon. They are- 

  1. Unable to cool large spaces.
  2. Provides an awful smell during functioning. 
  3. The air conditioners are very loud, even at the lowest volume.
  4. Sometimes it can be challenging to move the heavy components.
  5. It is troublesome to drain water regularly. 
  6. Do not last long. As we all know, it can last for 5 to 10 years. Etc. 

So these are some known disadvantages of using a portable aircon. Now it is time to know if using a portable aircon can be bad for you or not. 

As you all know, portable aircon can only supply air outside but cannot bring fresh air inside so that this component can make a closed system.

And for this reason, we breathe the same air again and again, which is unhealthy for all of us who are using this system. This vacuum that this aircon creates is a mess that is very harmful to us. So you can say that using a portable aircon can be bad for us. 

Is It Safe To Leave A Portable Air Conditioner On When Not Home?

Are leaving your portable air cooling system on when not at home unsafe. If you do so, it can be pretty beneficial for you. 

If you leave your portable cooling system on while leaving your house, it will let the inside air supply be dehumidified. Again it will lower the possibilities of newly developed mold while you are not at home. 

So yeah, leaving a portable aircon on when not home is safe. 

How Much Will A Portable AC Raise Your Electric Bill?

Generally, for a 15000 BTU portable air cooling system, it will cost about $0.20 per hour to run. So if you use your mobile air cooling system for, say, eight hours per day, it will cost about $1.60 every day. So, if you use it for a month or so, it will cost you about $48. 


After reading this whole article, I guess you know what happens if you don’t vent your portable air conditioner. 

So from now on, ignore doing the things which can cause you extra hassles for not venting your mobile air cooling systems. 

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