How to Keep Bugs Out When Using a Window Air Conditioner


Many people think that they cannot use their window air conditioner because it will attract bugs. However, you can still have your central air conditioning system even with insects in your house. To prevent this from happening, you need first to learn how these creatures can live inside your home or business. In this article, I will discuss how to keep bugs out when using a window air conditioner. So let us get started.

How to Keep Bugs Out When Using a Window Air Conditioner

What Makes Them Come Inside?

When an air conditioner is switched on and running at high speeds, some amount of cold air or cool air will be pushed into the room that leads outside of the building itself. This causes a pressure difference between the inside and the outside area, making it more difficult for smaller creatures like bees, ants, and mosquitoes to stay in place.

Considering these factors, you need to make sure that the air conditioner unit remains in good and working order at all times. This can be done by regularly checking and maintaining the AC system itself for any errors or problems it might have. It will make the cooling process more efficient and reduce the chances of being visited by bugs inside your home.

Step-wise Guide on How to Keep Bugs Out When Using a Window Air Conditioner:


The Window AC unit should be placed where there are no water leakage or moisture problems. This is because these units can easily get damaged by this moisture/water all over them. Also, prevent any unnecessary direct sunlight from falling on the unit, which can heat the unit more quickly than usual, resulting in energy wastage.


Place the AC directly opposite to a crosswind from an open window so that there is proper ventilation of cool or warm air inside your room and blocks entry of outdoor pests such as flies etc., to prevent them from landing on it; eventually moving towards you!


Always keep your window AC unit dry from outside by wiping it with a wet cloth or an antistatic duster to prevent the entry of moisture/water inside.


If you are using a Window AC in attics or basements, where there is no airflow, get an exhaust fan installed, which will help in moving out warm air and at the same time sucking in fresh cool air. This will help you keep the temperature comfortable inside and prevent the entry of bugs into your room.


It is essential to clean your window AC unit regularly and wash it regularly with a mild soap solution every week or fortnight. If you don’t do so, you will find that dust, pet hair, lint, etc. will stick on it, restricting proper air flow, which may lead to overheating and ultimately damage of the system due to which even though you think it’s cooling your room properly, but actually it isn’t! So always ensure regular cleaning & maintenance of the unit!

Maintenace of A Window Air Conditioner Unit:

1.Check for Air Leaks Around the Window Unit Itself:

Air Conditioning units are not meant to be sealed tight against walls. Allow a space of at least 5 inches between the unit and any wall, ceiling, or floor close by, as this will allow greater airflow that will greatly enhance the efficiency of your unit.

Make sure that the front grille is free from obstructions and bugs! If there is a gap between the top of the AC and the bottom portion of your window frame, you can seal it with mastic tape. Another option is to install a simple screen in place of your current grill if insects are an ongoing problem. This way, you should be able to get rid of most bugs if they fly into it.

2.Check for Proper Ducting and Airflow:

Make sure that your A/C unit has enough room around it to allow for proper airflow. The amount of space you need will vary depending on the size of your air condition unit, as well as what type (there are four main types used in residential applications: window, through-the-wall “packaged,” portable, and central units).

Every HVAC technician should be able to advise you how much room is required by your particular model if you’re unsure what size or shape would best suit your home. Finally, make sure that the air coming out of the vents isn’t hot! If it is, there could be several problems with your A/C system.

3.Clean Your A/C unit and the Rest of It;

It would help if you cleaned the outer shell of your A/C unit often, as this will keep it free of dust buildup or any other contaminants that can affect its functioning and efficiency (your HVAC technician will recommend how often you need to do this). You should also make sure that you clean out your filters regularly, as these accumulate a lot of debris throughout the year.

The relatively large capacity for such things makes them ideal breeding grounds for mold, mildew, and bacteria, where they can make people sick if not cleaned regularly.

This problem only worsens with the regular use of air conditioners during hot weather periods! Again, it’s recommended to consult with a professional to determine what type and how often you need to clean your filters. If your A/C unit is located in a basement or other area where the temperature remains relatively constant, this may not be as crucial for you, but if it’s exposed to many outside elements (sunlight included), it might be something worth looking into.

4. Check the Air Coming From the Blower:

Always Check the Air 
Coming From the Blower

The blower on an air conditioning unit can sometimes get clogged with dirt, hair, leaves, and so on from its surroundings that will jam up its works and reduce airflow considerably! This is usually easy enough to fix yourself — locate the housing covering its fan blade(s), remove the obstruction(s) found inside, then clean and dry the blower. Reassemble, and it should be working as new! If you’re unsure of what to do or not sure if your air conditioner is jammed up, consult a qualified HVAC technician about it.


If your air conditioner is not turning on properly, or if it’s blowing hot air instead of cold (even when set to cooler temperatures), then it may need to be looked at by an HVAC technician. The same goes for any other issues you’re having with the system that are either time-consuming or potentially dangerous!

You should always be prepared for bug investigation on your AC. I hope this article has been beneficial for learning how to keep bugs out when using a window air conditioner. Thank you and have a nice day!

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