As the hot summer sun starts to fade and the cooler temperatures of fall starts to settle in, residents of Zelienople start preparing their homes and yards for the the upcoming cold weather. For many, that leads to the question of whether they need to cover their outdoor air conditioning unit for the winter.

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

Here, the experts at Knoechel Heating share five reasons why covering your AC doesn’t need to be on your fall to-do list and what you should do instead.

1. Your AC can Handle Snow

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

2. Covering Your Air Conditioner Can Cause Mold

One of the reasons you shouldn’t cover your air conditioner in the winter is because doing so can trap moisture—which is the opposite of what you want in your outdoor unit. That’s because allowing moisture to collect inside the unit creates the perfect conditions for mold and mildew to thrive.

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

Instead of 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. Covered AC Systems Can Host Animals

You and your family aren’t the only ones who prepare for winter. Animals that live around your home are also hunting for a warm, cozy place to hide out for the wintry months. For many animals, a covered air conditioner is an awesome winter refuge.

Birds, mice, chipmunks and even rats frequently make nests inside covered air conditioners. Animals living in a covered AC unit can cause several problems. Rodents can chew through wires, insulation and other components, causing damage that may require expensive repairs. Debris animals bring into the AC to make themselves a warm and comfortable bed can block airflow and ventilation, reducing the efficiency of the appliance and potentially causing it to overheat. Additionally, animal excrement can result in unsanitary conditions and foul odors.

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

4. A Winter Cover for AC Units Restricts Airflow

Another reason not to cover your air conditioner in the winter is because a cover limits airflow through the unit. Adequate airflow is essential for the AC system because it facilitates heat exchange and enables the unit to cool effectively. When airflow is reduced, the system has to work harder to reach the desired temperature, causing increased energy consumption and strain on the components.

In addition, if you run your air conditioner without knowing that the outside unit is covered or because you simply forgot, it could result in a range of problems. One issue is that the shortage of proper airflow could cause the compressor to overheat, causing its failure or damage.  That’s why it is vital to ensure the outdoor unit is free from obstructions and is not covered to maintain the best possible 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 conditioning unit than to cover your outdoor AC unit.

There are several key maintenance projects you should prioritize to ensure optimal performance and longevity of your AC unit. First, it’s smart to look at your outdoor AC unit regularly and pull out any debris such as leaves, sticks and dirt to allow proper airflow. Second, examine and clean the coils, fins and filters to make sure there isn’t any dirt and dust buildup that would hinder effective heat exchange or airflow.

Scheduled air conditioning maintenance not only boosts efficiency, but it also helps extend the unit’s life span, lowers 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.