Can Mice Get in Through Your Air Conditioner?

Air conditioning is a basic household need for most homeowners and especially during the warmer months of the year. Having a nice cool home is pleasant respite the harsh temperatures and humidity outside. Your home AC is built to last, but just like any other household appliance is prone to fail, and it’s worse when it fails due to rodent damage when mice come through the air vents. The insulation in air conditioning units often attracts mice, since its warm and suitable for nesting. Mice can get in through your air conditioner via air vents, pipe entries, block access panels and cable entries. The first sign of mice living in your air conditioner is mice droppings around outdoor air conditioning units, and occasionally you will spot dead mice which look like they have been electrocuted. There are many pests that will invade your air conditioning unit, but mice and rats are the most worrisome. Mice will gnaw on wiring or build nests that can put a strain on the unit. Even more disturbing is that mice can enter your home through an air conditioner. Fortunately, you can avoid problems by mouse proofing your home and AC units by calling your local mice exterminator in Toronto

How They Get In

First, you need to understand how they get in. Mice will slip into the tiniest of spaces. An air conditioner is a perfect place for a mouse because the air ducts contain materials they can use to build suitable nests. Unfortunately, mice are notorious for chewing, which means they can cause significant damages to electrical wiring and refrigerant lines found inside the unit.

The damages created by a mouse may prove hazardous for you and expensive to repair. Therefore, finding ways to keep mice out of your AC unit, and therefore out of your home, is of the utmost importance. Mice will find gaps leading into your home or into your air ducts to gain entry from the AC unit, so it is best to stop them in their tracks.

Pest Proofing

Pest proofing is something you should do no matter if you have a pest problem or not. Because there are many other critters that would like to make your AC a home, you should make pest proofing a part of regular maintenance.

You can pest proof in various ways. The following are just some of the ways you can prevent mice and other pests from entering your AC and gaining access to your home:

  • Install covers: You can find special coverings and mesh screens specifically made for AC units that cover air vents and flues. Make sure you cover your vents and flue pipes to prevent mice from getting into your home. In case you spot a crack or duct, repair promptly since mice can get in through air vent cracks and ducts.
  • Seal entry points: The air ducts of your AC serve as the perfect way for a mouse to get into your home. Make sure you seal any cracks or gaps in the ducts so mice cannot get in and repair damage ducts immediately. Mice can fit through a hole that is half the size of a nickel, ensure your air ducts are properly sealed to discourage mice from moving in.
  • Prevent moisture: Moisture buildup around the AC unit is one reason pests, such as mice, will invade the unit. The moisture provides them with something to drink, and hydration is necessary for mice. Prevent moisture by redirecting puddles from rain or condensation that form around the unit.
  • Guard your condenser. Most times, rodents such as mice move into your AC unit through its air vents. Clear all vegetation around the unit including stacked up material near the AC since they could attract mice.

Repeat this routine occasionally and through the seasons. You will need to be extra careful during seasons when your air conditioning system is not in use since they are most likely to attack them. If you are unsure of how to go about this, contact your local pest control service to help you out. Dealing with mice in your AC unit is a big deal. Dealing with them using your AC to enter your home is even bigger. Fortunately, preventing them from entering your AC in your home is simple. If you need additional help getting mice out of your air conditioning unit, contact a pest control professional for assistance.

Can Mice Travel Through Air Vents and Build Nests Inside Your Home?

mice can get inside your home via AC unit
mice can get inside your home via AC unit

Mice will be drawn to your home due to three simple reasons. They are looking for a safe, warm place stocked with food. When mice invade your home, they will normally use the darkest corridors they can find, and more often it’s usually your air vents. They will use your air vents to run around in search of food. Mice have the capability of climbing and slipping through holes as tiny as a coin size. Therefore there is no stopping them if they go undetected.

Your air conditioning system is an integral part of your home, and it’s more useful to the family during summer. Having your air conditioning run fine is always a nice thing especially when it is scorching outside. While most AC’sare built with durability in mind, like any other piece of equipment, itis prone to failure. It’s very annoying to find out that your AC system is damaged due to an infestation. Well, when mice use your air vents as passages while they forage for food, they could easily end up inside your HVAC equipment where they are known to cause damage to the equipment by chewing up the wires and cabling.

The insulation that is used in your HVAC system is what attracts mice in the first place. It’s warm and offers a safe place for nesting. When mice get into your AC system through the vents, they block the access panels with debris. One of the first signs that you might have mice in your HVAC system is when you spot mice droppings. They are usually crunchy and resemble a rice grain. You can easily spot them around your outdoor air conditioning systems.

So How Do They Get In?

Well, as explained earlier, mice can fit through the tiniest of places. They can squeeze themselves through a dime size hole. They will also use your air vents since it contains materials that they could use to build their nests. Mice are destructive when it comes to chewing; they will gnaw through the AC system’s wiring and cabling damaging the line that is found inside the unit.

While these are damages that could be fixed by your HVAC dealer, it’s a fire hazard and often expensive to repair. It’s therefore important that homeowners hire a professional pest control company to help prevent mice from getting in through their air vents.

What Should I Do

The best line of action would be to implement pest proofing. This is something that matters whether you have a pest problem or not. Since there are several other critters that could get into your home through your air vents, it is important that this exercise be part of regular maintenance.

How to remove mice from air vents

Your air vents are the likely areas that mice will use as they look for food and a safe place to sleep. While mice often die inside these ducts, they can send a rank odor throughoutyour living areas. In case you notice you have mice in your air vents do the following.

  • Switch off your AC system allowing the grates to get to room temperature. Remove the grates that are used to cover your heat vents.
  • Bait a snap trap with food that mice love such as chocolates, peanut butter or raisings
  • Place these traps in each air vent.
  • Check the traps regularly each morning using a flashlight. If any mice have been trapped, remove them. Use rubber gloves and dispose ofthe mice in a Ziplock bag.

To prevent this type of infestation through your air vents, seal off any small holes that could give entry into your air vents. Also perform a thorough inspection of your house for silvers between ducts, wall or your roof. Ensure that they are covered with mesh to prevent the mice from slipping through.

In caseyou notice any rodent activity in your air vents, the best line of action would be to call an exterminator. They are more experienced in getting rid of rodents in difficult to reach areas in your home. They will also perform this task with minimal effort and damage to your home.

How Can I Stop Mice from Getting Through AC Air Vents?

If you can fit a ball pen through a hole, a mouse can fit in. Mice are determined little critters, making it a challenge to prevent this type of damage. In case you notice signs of mice in your air conditioner, it’s important that you contact a pest control professional. Mice in your air conditioning system might mean you have a bigger rodent problem, and chances are, they have moved in through your AC’s air vent since they have grown in number with limited places to nest.

A pest control service will not only be able to get rid of the mice in your AC, but they will carry out an inspection to determine how and why the mice got in through your AC’s air vents. With this information, they will be in a better position to prevent future invasion into your AC unit. The Exterminators Inc. offers commercial and residential mouse control services as well as mouse control products for DIY enthusiasts. Call us at 647-496-2211 for a consultation.

Article Updated:  November 19th, 2018

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Joe The Exterminator
Joe The Exterminator

Joe is a professional pest control exterminator with over 15 years of experience and enjoys sharing his knowledge about different pests and how you can deal with them.