As the scorching summer heat starts to fade and the cooler temperatures of fall starts to settle in, residents of Covington start preparing their homes and yards for the the upcoming cold weather. For many, that leads to the question of whether they should cover their outdoor 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. On top of not being necessary, covering your outdoor air conditioning equipment can actually cause problems.

Here, the professionals at Covington Air Systems share five reasons why covering your air conditioner 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

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

2. Covering AC Systems can Encourage Mold

One of the reasons you shouldn’t cover your air conditioner in the wintertime 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 thrive.

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

Instead of covering the unit, instead provide proper drainage and keep the area around the unit cleared of debris, allowing for efficient airflow and preventing moisture buildup.

3. A Covered Air Conditioner 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 winter months. For many animals, a covered air conditioner is an ideal winter refuge.

Birds, mice, chipmunks and even rats often make nests inside covered air conditioners. Animals residing in a covered AC unit can cause numerous problems. Mice can chew through wires, insulation and other components, causing damage that may require pricey repairs. Debris animals bring into the AC to create a warm and comfortable nest can obstruct airflow and ventilation, lowering the efficiency of the unit and potentially causing it to overheat. Additionally, animal droppings can result in unsanitary conditions and potent odors.

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

4. Covering Your Air Conditioner Restricts Airflow

Another reason you shouldn’t cover your air conditioner in the winter is because a cover limits airflow through the unit. Suitable airflow is crucial for the AC system because it facilitates heat exchange and allows the unit to cool effectively. When airflow is restricted, the system has to work harder to achieve the desired temperature, causing increased energy consumption and strain on the components.

In addition, if you run your AC without noticing that the outdoor 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, resulting in its failure or damage.  That’s why it is vital to ensure the outdoor unit is always cleared of any blockages 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 much more effective to do a little maintenance for your cooling system than to cover your exterior AC unit.

There are several key maintenance tasks you should prioritize to ensure maximum operation and longevity of your AC unit. First, it’s smart to examine your outdoor AC unit regularly and get rid of any debris such as leaves, small branches 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 prevent 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 protects against costly repairs. Rather than using a cover, committing time and effort into routine air conditioning maintenance is a proactive approach that can significantly benefit your entire HVAC system in the long run.