As the scorching summer sun starts to fade and the cooler temperatures of fall starts to settle in, residents of Plover start preparing their homes and yards for the winter. For many, that leads to the question of whether they should cover their exterior AC for the winter.

While it may seem like a smart idea, in reality there are multiple reasons why you shouldn’t cover your AC unit in the winter. In addition to not being something you need to do, covering your outdoor air conditioning equipment can actually cause problems.

Here, the experts at Point Heating & Cooling 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 can Handle Snow

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

2. Covered AC Systems may Encourage Mold Growth

One of the reasons you should not cover your outdoor air conditioning equipment in the cold months is because doing so can trap moisture—which is definitely not what you want in your outdoor unit. That’s because allowing moisture to collect inside the unit produces the perfect conditions for mold and mildew to thrive.

Mold and mildew not only have an unpleasant smell, but they can also create health risks, especially for people with respiratory issues or allergies. Additionally, the unwanted 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. Your Covered Air Conditioning Unit Can Attract 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 winter months. For many critters, a covered air conditioner is an awesome winter home.

Birds, mice, chipmunks and even rats frequently make winter dens inside covered air conditioners. Animals living in a covered air conditioning unit can cause numerous problems. Rats can chew through wires, insulation and other connections, causing damage that may require pricey repairs. Debris animals bring into the AC to create a warm and comfortable nest can block airflow and ventilation, limiting the efficiency of the appliance and potentially causing it to overheat. In addition, animal waste can result in unsanitary conditions and foul odors.

Leaving your air conditioner uncovered helps dissuade creatures, because an uncovered AC provides less shelter from cold weather than a covered unit. That’s better for your air conditioner—and leaves you with less mess to pick up and things to repair once the snow melts.

4. A Winter Cover for AC Units Restricts Airflow

Another reason you shouldn’t cover your AC unit in the winter is because a cover limits airflow through the unit. Suitable airflow is essential for the AC system because it helps with heat exchange and enables the unit to cool properly. When airflow is severely limited, the system has to work harder to maintain the desired temperature, leading to greater energy consumption and strain on the components.

In addition, if you use your AC without knowing 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, leading to its failure or damage.  That’s why it is essential to ensure the outdoor unit has no blockages and is not covered to maintain maximum airflow.

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

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

There are a number of key maintenance tasks you should prioritize to ensure optimal performance and longevity of your AC unit. First, it’s smart to inspect your outdoor AC unit regularly and clear any debris such as leaves, twigs and dirt to maintain proper airflow. Second, examine and clean the coils, fins and filters to make sure you don’t see any dirt and dust buildup that would impede successful heat exchange or airflow.

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