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How to Keep Critters Out of Your AC Unit

Pest-Proofing Your Air Conditioner

The AC switch has been flipped, but nothing happens. Is it old age? Faulty wiring? Broken parts? Nope. It’s pests. Mice and other pests are often attracted to the outside AC unit because it’s a comfortable, protective environment.

When mice and other critters burrow into an AC unit, they can do a lot of damage. Many components can get chewed up causing the system to stop working. The chewed wiring can even become a potential fire problem. Sometimes birds can also decide to nest in the unit and often get stuck in the fans.

The pest droppings or carcasses can affect indoor air quality by not only creating an unpleasant odor throughout the home, but also causing allergies to act up.

To prevent pests from taking over the outdoor AC unit and the problems associated with this, take these steps:

  1. Create a barrier

    Animals live in vegetation. If the unit is surrounded by bushes or trees, animals are more likely to investigate the AC unit. Keep a large area around the unit clear from any type of vegetation. Using a pet repellant can also help deter animals. Spray it on and around the unit to create an effective barrier.

  2. Maintain your AC

    Annual maintenance on the outdoor AC unit can find and get rid of pests before they create a huge issue. If pests have already taken over and ruined some of the components, Diamond Heating and Cooling’s technicians can make the necessary repairs before the AC is turned on.

  3. Turn off the condenser breaker

    One of the reasons animals are attracted to the unit during winter is because it stays warm due to the condenser breaker and the cover over the unit. Turn off the condenser breaker so it does not stay warm. Also consider getting rid of the insulating cover if one was used previously.

Keep an eye on the outdoor unit and call Diamond Heating and Cooling if it seems something might have nested inside or to schedule annual maintenance.