As the sweltering summer sunshine starts to fade and the cooler temperatures of fall starts to settle in, residents of Moline 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 AC for the winter.

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

Here, the experts at J.L. Brady Company LLC 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 designed to withstand harsh weather conditions like snow in the wintertime. These machines are built with durable materials and parts 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 manufactured to protect the internal elements from moisture and debris.

2. Covering AC Systems can Encourage Mold

One of the reasons you should not cover your AC unit 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 trapping moisture inside the unit generates the perfect conditions for mold and mildew to flourish.

Mold and mildew not only have an unpleasant aroma, but they can also present health risks, especially for household residents with respiratory issues or allergies. Plus, the excess moisture can corrode the internal components of the AC unit.

Instead of covering the unit, instead ensure 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

People aren’t the only ones who prepare for winter. Animals that live around your home are also searching for a warm, cozy place to live for the winter months. For many critters, a covered air conditioner is an ideal winter home.

Birds, mice, chipmunks and even rats commonly 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 costly repairs. Debris animals bring into the AC to make themselves a warm and comfortable place to get out of the cold weather can obstruct airflow and ventilation, reducing the efficiency of the appliance and potentially causing it to overheat. In addition, animal excrement can result in unsanitary conditions and potent odors.

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

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. Adequate airflow is essential for the AC system because it assists heat exchange and permits the unit to cool effectively. When airflow is severely limited, the system has to work harder to achieve the desired temperature, leading to greater energy consumption and strain on the components.

In addition, if you use your air conditioning 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 shortage of correct airflow could cause the compressor to overheat, causing its failure or damage.  That’s why it is crucial to ensure the outdoor unit has no blockages and is not covered to maintain maximum 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 projects you should prioritize to ensure the best possible function and longevity of your AC unit. First, it’s a good idea to check your outdoor AC unit regularly and pull out any debris such as leaves, small branches and dirt to maintain proper airflow. Second, inspect and clean the coils, fins and filters to make sure they are free from dirt and dust buildup that would hinder successful heat exchange or airflow.

Regular air conditioning maintenance not only enhances efficiency, but it also helps extend the unit's life span, reduces energy consumption and protects against costly repairs. Rather than using a cover, committing time and effort into routine air conditioning maintenance is a proactive strategy that can significantly benefit your entire HVAC system in the long run.