As the hot summer heat starts to fade and the refreshingly cool weather of fall starts to settle in, residents of Brookfield start preparing their homes and yards for the winter. For many, that leads to the question of whether they should cover their exterior air conditioning unit for the winter.

While it may seem like a great idea, in reality there are many reasons why you shouldn’t cover your AC unit in the winter. On top of not being something you need to do, covering your outdoor air conditioning equipment can even cause problems.

Here, the professionals at Central Air LLC share five reasons why covering your air conditioner doesn’t need to be on your fall to-do list and what you should do instead.

1. Snow won’t Hurt Your AC

Exterior AC units are supposed to withstand harsh weather conditions like snow in the winter season. These systems are built with durable materials and parts that can handle the outdoor elements without damage. The coils and fins of the unit are constructed to resist corrosion, and the housing is designed to protect the internal components from moisture and debris.

2. Covered AC Systems may Encourage Mold Growth

One of the reasons you shouldn’t cover your AC unit in the winter is because doing so can trap moisture—which is not at all what you want in your outdoor unit. That’s because trapping moisture inside the unit creates the perfect conditions for mold and mildew to flourish.

Mold and mildew not only have a bad aroma, but they can also create health risks, especially for individuals with respiratory issues or allergies. Plus, the unwanted moisture can corrode the internal components of the AC unit.

As an alternative to covering the unit, instead make sure the unit has proper drainage and keep the area around the unit cleared of debris, allowing for efficient airflow and preventing moisture buildup.

3. Your Covered Air Conditioning Unit Can Host Animals

You and your family aren’t the only ones who make plans for winter. Animals that live around your home are also looking for a warm, cozy place to live for the wintry months. For many animals, a covered air conditioner is an ideal winter home.

Birds, mice, chipmunks and even rats often make homes inside covered air conditioners. Animals dwelling in a covered air conditioner can cause many problems. Rats can chew through wires, insulation and other components, causing damage that may require pricey repairs. Debris animals bring into the AC to construct a warm and comfortable place to get out of the cold weather can obstruct airflow and ventilation, lowering the efficiency of the appliance and potentially causing it to overheat. In addition, animal droppings can result in unsanitary conditions and bad odors.

Leaving your air conditioner uncovered helps deter wildlife, because an uncovered AC gives them less shelter from chilly temperatures than a covered unit. That’s better for your AC—and leaves you with less mess to clean up and things to repair when winter is over.

4. A Winter Cover for AC Units Restricts Airflow

Another reason it’s better that you don’t cover your AC unit in the winter is because a cover restricts airflow through the unit. Proper airflow is vital for the AC system because it facilitates heat exchange and permits the unit to cool properly. When airflow is reduced, the system has to work harder to reach the desired temperature, causing additional energy consumption and strain on the components.

In addition, if you turn on your AC without realizing that the exterior unit is covered or because you simply forgot, it could result in a range of problems. One issue is that the absence of proper airflow could cause the compressor to overheat, leading to its failure or damage.  That’s why it is essential to ensure the outdoor unit has no barriers and is not covered to maintain the best possible airflow.

5. AC Maintenance Offers More Benefits Than Covering Your Air Conditioner

The bottom line is, it’s much more effective to do a little maintenance for your air conditioning unit than to cover your outside AC unit.

There are several key maintenance activities you should prioritize to ensure maximum operation and longevity of your AC unit. First, it’s a good idea to inspect your outdoor AC unit regularly and pull out any debris such as leaves, twigs and dirt to promote proper airflow. Second, check and clean the coils, fins and filters to make sure you don’t see any dirt and dust buildup that would hinder successful heat exchange or airflow.

Routine air conditioning maintenance not only boosts efficiency, but it also helps extend the unit’s life span, decreases energy consumption and protects against costly repairs. Rather than using a cover, committing time and effort into routine air conditioning maintenance is a proactive approach that can greatly benefit your entire HVAC system in the long run.