How to Get Roaches Out of Air Conditioner


You may want to remove roaches from the air conditioner if they are infesting your house. These annoying insects are often ignored, but their population can be dangerous to everyone living in a home. Roaches can cause respiratory problems and allergic reactions when ingested.

How to Get Roaches Out of Air Conditioner

In addition, you should not let these pests live inside your walls because they might end up nesting there and spreading. In this article, I will be discussing how to get roaches out of air conditioner. So let us get started.

Do Roaches Damage the Air Conditioners?

Well, it is not that roaches are destroying the AC itself. It’s just they create a lot of odor and contaminates allergens when they take shelter inside your air conditioner.

You usually won’t notice when your AC has new tenants, since you’re not at home every day to check. The smell usually starts kicking in before you notice, but by then it’s usually too late to get rid of them.

Suppose there’s one thing we all love about the summer season – besides its tropical weather-is our air conditioners since they keep our homes cool. However, keeping our air conditioners clean and free from pests seems impossible during these hot days.

In fact, many homeowners would likely have encountered several problems after getting roaches in the air conditioning system, and it is truly not an easy thing to get rid of them.

For those of you who are worried about cockroaches taking up residence in your air conditioner, there are a few signs to look for that may indicate an infestation, such as live sightings of cockroaches or cockroach feces on your air conditioner’s vents.

These pests love to hide in dark, hidden places, so be on the lookout for other signs of their presence, like bug bombs or pesticide cans near your air conditioner, or even dead roaches behind the appliance itself.

Step-wise Guide on How to Get Roaches Out of Air Conditioner

Step 1: Examine the Air Conditioner

Please take a closer look at your conditioner and examine it thoroughly. If you find any hidden areas covered by a grille, be sure to open them and check for cockroaches. Keeping your AC unit clean will ensure that no unwanted pests are hiding inside.

If any such area remains uncleaned, they will start multiplying again, resulting in further infestation later on. So just for your own good, don’t forget to thoroughly inspect the entire air conditioner for cockroaches or other pests before starting with the cleaning process.

Step 2: Vacuum Cleaning Trick (for soft surfaces)

Cockroaches like to hide in small, dark places. Even if you don’t see any, they could be hiding on wires and cables. To make sure you get rid of all of them, vacuum clean all potential hiding spots.

Use a Professional  Pest Control

Step 3: Spray Foam into Seams (for Hard Surfaces)

If your air conditioner has hard surfaces on its body, you can kill the roaches hiding on it by spraying foam into every tiny space between the hard surfaces.

Acid-based foam is highly poisonous for roaches and anything else that comes in contact with it. The foam will not be able to reach cockroaches hiding in soft surfaces, but for some reason, you want to kill every single cockroach inside the AC unit, then this method can help you do that.

Step 4: Use a Professional Pest Control

If none of these methods have helped you get rid of cockroaches from your air conditioner, it may be time to call pest control. Attempting to do such work on your own can be dangerous.

A professional company has many ways to control pests even when hidden away somewhere unreachable by common household pesticides and poisons, using techniques involving different chemicals and equipment such as ‘hot shot’ to be sprayed into the air conditioning unit or a ‘gunk gun’.

Step 5: Clean Outdoor Condenser Unit

To avoid further cockroach infestation, homeowners must clean their outdoor condenser unit. If you find any insects on your air conditioner, try to catch them alive without damaging them using a sponge, paper, or anything else that can help you do so safely.

Then, take the caught insect outside, and release it into the wild. If you leave it inside your house, other cockroaches will come crawling out of fear for their lives. Since they don’t seem like finding their way back (if they ever did come from inside your AC unit), they will most probably die if you don’t get them out.

Also, check for water leaks on the outdoor AC unit of your air conditioner because cockroaches love these places to take shelter during hot summer days, and that way, they can keep away from being dehydrated, which is a lot worse than death itself.

Finally, make every effort possible to eliminate any possible source of water from near or around the condenser so that there is no chance for roaches to find their home near your house where it is more comfortable for them.

Cleaning Outdoor  Condenser Unit

Precautions While Performing How to Get Roaches Out of Air Conditioner

  • Ensure no one is present when the cleaner is sprayed, as this might lead to human death due to gas poisoning.
  • Do not spray on flowers or plants, as they are sensitive and may die after being exposed to chemicals for a prolonged period of time.
  • Keep all people and animals away from the room air conditioners while spraying roaches out of them. That will help avoid accidents occurring due to breathing in gasses contaminating the area around them.
  • Children must also be kept away from the area sprayed for getting rid of roaches who may inhale insecticide by mistake and get ill, thereby suffering an injury that can prove fatal if not treated properly within the time limit (depending upon the amount ingested).
  • Also, ensure that your pets or animals are not exposed to insecticide since they have sensitive bodies and might die if sprayed on them.

Which Pesticides Are Suitable for Roaches?

Pesticides are substances that are used to kill insects. They are commonly used to get rid of roaches. The most common pesticides include boric acid, oil, or aerosol insecticides. Many homeowners opt to use these when dealing with a roach problem in the house rather than professional services because they save money and can do it themselves.

That Are Used to Kill Insects

How Long Do They Last?

Boric Acid Stored Properly:

It is straightforward to store properly because it doesn’t have any special storage. You need a small jar and place the bait inside tightly. Once you put the bait into a corner where roaches frequently go through, roaches will find and eat it. One thing that makes this hard for pest control professionals is the long time frame between treatment and seeing any results.

Sugar-Based Baits:

These baits work on the principle that roaches are attracted to sweet things and continue to return for more. Basically, when a roach eats it, it will stick to their stomach and slowly reduce them until they die of hunger. As far as effectiveness goes, this one is on about par with high pesticide concentration sprays.

Cooking Oils:

Some people use cooking oils mixed with ant poisons or boric acid powder to deal with a cockroach problem in your house effectively. Since it’s only used internally by the roaches, it means that most of them won’t avoid poisoned food sources once they are already inside your house and can’t smell any danger signs from outside.

Professional Pest Control:

There are several effective ways for professionals to deal with roaches. For example, gels, powders, and spray pesticides can be used for extra effectiveness. However, if you want to clear your house completely, you’ll need professional help, as many different types of live insecticides that are used are too dangerous for the general public to handle.

Frequently Asked Questions

Can Cockroaches Come in Through the Air Conditioner?

Yes, cockroaches can come in through the air conditioner. They are able to do this because they have a strong sense of smell and can detect carbon dioxide.

Cockroaches Can Come  in the Air Conditioner


I hope this article has helped provide all the relevant information on how to get roaches out of air conditioner. Thank you and have a nice day!

Jennifer Branett
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