As the sweltering 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 need to cover their exterior air conditioning unit for the winter.

While it may seem like a smart idea, the fact is there are several reasons why you shouldn’t cover your AC unit in the winter. Along with not being necessary, covering your outdoor air conditioning equipment can even cause problems.

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

1. Your AC Unit Isn’t Damaged by Snow

Outside AC units are supposed to withstand harsh weather conditions like snow in the wintertime. These machines are built with durable materials and hardware that can handle the outdoor elements without damage. The coils and fins of the unit are engineered to resist corrosion, and the housing is designed to protect the internal parts 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 definitely not 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 an unpleasant odor, but they can also present health risks, especially for people with respiratory issues or allergies. Additionally, the trapped moisture can corrode the internal components of the AC unit.

Rather than covering the unit, instead make sure the unit has proper drainage and keep the area around the unit clean of debris, allowing for efficient airflow and preventing moisture buildup.

3. A Covered Air Conditioner Can Attract Animals

Humans 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 hide out for the cold months. For many creatures, a covered air conditioner is the perfect winter home.

Birds, mice, chipmunks and even rats commonly make winter dens inside covered air conditioners. Animals residing in a covered AC unit can cause many problems. Mice can chew through wires, insulation and other connections, causing damage that may require expensive repairs. Debris animals bring into the AC to create a warm and comfortable place to get out of the cold weather can obstruct airflow and ventilation, reducing the efficiency of the AC and potentially causing it to overheat. In addition, animal droppings can result in unsanitary conditions and foul odors.

Leaving your air conditioner uncovered helps dissuade wildlife, because an uncovered AC gives them less shelter from cold weather than a covered unit. That’s better for your air conditioner—and leaves you with less mess to throw away and things to repair in the spring.

4. Covering Your Air Conditioner Restricts Airflow

Another reason not to cover your AC unit in the winter is because a cover blocks airflow through the unit. Suitable airflow is vital for the AC system because it facilitates heat exchange and enables the unit to cool efficiently. When airflow is constrained, the system has to work harder to reach the desired temperature, causing increased energy consumption and strain on the components.

In addition, if you use your air conditioner 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 appropriate airflow could cause the compressor to overheat, causing its failure or damage.  That’s why it is necessary to ensure the outdoor unit has no obstructions and is not covered to maintain optimal airflow.

5. AC Maintenance Is More Effective Than Covering Your Air Conditioner

The bottom line is, it’s a lot more effective to do a little maintenance for your air conditioner than to cover your exterior AC unit.

There are several key maintenance tasks you should prioritize to ensure optimal function and longevity of your AC unit. First, it’s a good idea to check your outdoor AC unit regularly and clear any debris such as leaves, sticks and dirt to promote proper airflow. Second, inspect and clean the coils, fins and filters to make sure there isn’t any dirt and dust buildup that would impede effective heat exchange or airflow.

Regular air conditioning maintenance not only enhances 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 plan of action that can substantially benefit your entire HVAC system in the long run.