As the hot summer sun starts to fade and the relief of fall starts to settle in, residents of Macon start preparing their homes and yards for the winter. For many, that leads to the question of whether they ought to cover their exterior air conditioner 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 sometimes cause problems.

Here, the specialists at Air Temperature Control 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

Outdoor AC units are supposed to withstand harsh weather conditions like snow in the wintertime. 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 manufactured to protect the internal components from moisture and debris.

2. Covering AC Systems can Encourage Mold

One of the reasons you shouldn’t cover your air conditioner in the cold months is because doing so can trap moisture—which is the opposite of what you want in your outdoor unit. That’s because sealing moisture inside the unit generates 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 individuals with respiratory issues or allergies. Plus, 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. Your Covered Air Conditioning Unit Can Attract Animals

Humans aren’t the only ones who get ready for winter. Animals that live around your home are also looking for a warm, cozy place to live for the cold months. For many creatures, a covered air conditioner is an ideal winter home.

Birds, mice, chipmunks and even rats commonly make nests inside covered air conditioners. Animals living in a covered air conditioning unit can cause several problems. Rodents 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 home can block airflow and ventilation, limiting the efficiency of the unit and potentially causing it to overheat. Additionally, animal excrement can result in unsanitary conditions and foul odors.

Leaving your air conditioner uncovered helps deter animals, because an uncovered AC provides less shelter from cold weather than a covered unit. That’s better for your cooling system—and leaves you with less mess to pick 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 air conditioning equipment in the winter is because a cover restricts airflow through the unit. Proper airflow is crucial for the AC system because it facilitates heat exchange and permits the unit to cool efficiently. When airflow is constrained, the system has to work harder to maintain the desired temperature, resulting in greater energy consumption and strain on the components.

In addition, if you run your air conditioner 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 shortage of correct airflow could cause the compressor to overheat, resulting in its failure or damage.  That’s why it is vital to ensure the outdoor unit is free from blockages and is not covered to maintain optimal airflow.

5. AC Maintenance Works Better 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 exterior AC unit.

There are several key maintenance projects 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, small branches and dirt to allow 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.

Scheduled 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, putting time and effort into routine air conditioning maintenance is a proactive strategy that can significantly benefit your entire HVAC system in the long run.