How to Redirect Airflow From Window AC


Everyone will like to have a cool room when it is hot outside. During this time, we sometimes use the AC of our homes to make us feel more comfortable. But did you know that not all of the air from your AC goes into your room? If you live in an old house, some of the air from your AC may go out through windows because there is leakage in your house’s walls. Once you turn on the AC and try to use it, much of the cold air will be wasted with no gain at all. There are several ways for you to redirect airflow coming from your Window AC back towards people or stuff in your room to solve this problem. Today I am going to discuss some tips on how to redirect airflow from window AC. So let us get into the topic.

How to Redirect Airflow From Window AC

A Guide on How to Redirect Airflow From Window AC 

Option 1:

You can use an air deflector(from a Home Depot or Lowe’s) to redirect airflow from your Window AC. To do this, you hang the air deflector in front of the outlet on your Window AC. Airflow will be redirected into the room so you can feel cool and comfy while using your AC.

Option 2:

If you are handy with tools, you may also make an air deflector yourself by using some wood. Place a board in front of the outlet on your Window AC then attach a round mesh sheet onto it using thin metal wires. Securely fasten them together for best results. To improve its effectiveness, stick more foam sheets around the edges of this homemade air deflector to ensure that it will work as well as possible.

Option 3:

To redirect airflow coming out of your Window AC, you may also add a plastic cover onto the outlet where cold air comes out from. This object should fit tightly into the outlet so that air will have no way of escaping through gaps or holes in between the object and the outlet.

Option 4:

You can use a cardboard box to divert airflow from your Window AC. First, cut an L shape piece on one end of the box, then stick it into one of the side openings in front of your Window AC’s outlet. You may want to tape it down to prevent it from moving after cutting some holes at both ends for better breathability. Since cardboard is porous, air will be able to go out through the box and into your room in time.

Option 5:

You can also have a more advanced option with this one by adding some more features to your homemade AC deflector. One thing that you may want to add is a motorized fan. Find a cheap portable fan from there or anywhere else, then attach it to your box using zip-ties or other kinds of ties. To redirect airflow coming out of your Window AC, turn on the fan so that cold air leaks into your room as well. Another way for you to direct airflow is by installing vents at the four corners of the top surface of this box. By doing so, you can place an oscillating fan that has the ability to redirect airflow towards every corner of your room.

Add Is a Motorized Fan for Ac Deflector

Option 6:

You can also try out this option in redirecting the airflow coming out from your Window AC. First, get a metal plate and cut some holes on it so that air will be able to go through as well. Next, buy some gasket material (from Home Depot) or an old ring belt and install them around the edges of the plate to prevent any leakage into your room. Make sure that there are no spaces between these gaskets and the plate. Last but not least, you may want to add a layer of foam on top of those gaskets to ensure better breathability while using AC.

Option 7:

This is probably one of the cheapest solutions out there, and it is also one of the most effective ones. Trying to redirect airflow coming from your Window AC? Add a plastic cover over its outlet. This will ensure that air leaking will be directed into your room rather than just going anywhere else.

Frequently Asked Questions

What is a Window AC Airflow Deflector?

A window AC airflow deflector is a plastic or metal hinge that attaches to the window frame and allows you to redirect, adjust, and re-direct your window air conditioner’s cold airflow. An airflow deflector is great because if you get tired of running air in front of your face or constantly blasting the ceiling fans with cold air, you adjust it so that the flow travels instead of at waist height more comfortable and cooler environment for everyone.

How Does a Window Air Conditioning Deflector Work?

An AC airflow deflector is used to redirect and change the direction of airflow from your home’s indoor air conditioning unit. They can be installed on any standard size Windows AC unit.

Ac Airflow Deflector Is Used 
to Redirect and Change
 the Direction of Airflow

It helps focus the cooling area in one direction to blow throughout an entire room as central air does. Instead, window AC units cool down rooms by blowing out hot air trapped inside a room into vents outside the house to be released into the outdoors.

Precautions While Performing How to Redirect Airflow From Window AC 

  • Ensure that the window AC is not turned on when doing this process, as it can cause damage to your electronic items.
  • Always use good quality ducting along with tape. Sometimes we have seen taping done so bad that the duct gets damaged while removing them from the wall. The malfunctioning of your electronic devices cannot be attributed to me, so please make sure that you are using the correct ducts and tapes for the job.
  • If there is any chance of water seepage through cracks or leakage of coolant, try to seal them first. The plaster will do just fine at times. Also, ensure the drainage hole is free from any obstruction like mud particles, etc., it may result in water accumulation and failure of your electronic devices.
  • While removing the AC from the wall, check for any electric wiring or plumbing pipelines nearby. Again, it is better to make sure that these things are not damaged in any way while pulling off the AC.
  • There are chances of leakage of gases like hydrogen or chlorine during this process. So it is always recommended to do this step in a well-ventilated area (don’t say I didn’t warn you). Remember, any gas leak inside your house can be really disastrous. You never know when your domestic animals may start acting weirdly if exposed to these gases.
  • This method should only be used if necessary, else it defeats the purpose of having a window AC.
  • The duct must be sealed very carefully by the person carrying out this process. If any air leakage is noticed while doing this job, it should not be done because it just defeats the purpose, and you may end up with a stuffy room that can even threaten your health if the excessive accumulation of moisture happens.
  • Ensure that there is no single sharp object like a nail or screw stuck near the place where you are planning to put in the new ducting.


I hope this article on how to redirect airflow from window AC helped you out in some way!  If you liked it, don’t forget to share it with your friends and family!  Always keep your safe while operating electric types of machinery while performing the process. Thank you, and best of luck!

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