As the sweltering summer sun starts to fade and the relief of fall starts to settle in, residents of Moline start preparing their homes and yards for the wintertime. 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 good idea, the reality is there are several reasons why you shouldn’t cover your AC unit in the winter. On top of not being needed, covering your outdoor air conditioning equipment can even cause problems.

Here, the experts at Freed Heating & Air Conditioning 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. Snow won’t Hurt Your AC

Outdoor AC units are supposed to withstand harsh weather conditions like snow in the wintertime. These systems are built with solid materials and components that can handle the outdoor elements without damage. The coils and fins of the unit are engineered to resist corrosion, and the housing is crafted 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 wintertime is because doing so can trap moisture—which is definitely not what you want in your outdoor unit. That’s because sealing moisture inside the unit produces the perfect conditions for mold and mildew to spread.

Mold and mildew not only have an unpleasant aroma, but they can also present health risks, especially for individuals with respiratory issues or allergies. Additionally, the excess 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 free 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 get ready for winter. Animals that live around your home are also looking for a warm, cozy place to live for the winter months. For many creatures, a covered air conditioner is the perfect winter refuge.

Birds, mice, chipmunks and even rats often make nests inside covered air conditioners. Animals living in a covered AC unit can cause many problems. Mice can chew through wires, insulation and other parts, causing damage that may require pricey repairs. Debris animals bring into the AC to create a warm and comfortable home can impair airflow and ventilation, decreasing the efficiency of the unit and potentially causing it to overheat. Moreover, animal excrement can result in unsanitary conditions and bad 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 cooling system—and leaves you with less mess to throw away and things to repair once the snow melts.

4. An AC Cover Restricts Airflow

Another reason not to cover your air conditioning equipment in the winter is because a cover restricts airflow through the unit. Adequate airflow is essential for the AC system because it facilitates heat exchange and permits the unit to cool efficiently. When airflow is restricted, the system has to work harder to reach the desired temperature, resulting in additional energy consumption and strain on the components.

In addition, if you run your air conditioner without realizing that the outside unit is covered or because you simply forgot, it could result in a range of problems. One issue is that the lack 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 obstructions 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 outside AC unit.

There are a number of 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 pull out 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 you don’t see any dirt and dust buildup that would hinder effective 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 prevents costly repairs. Rather than using a cover, putting time and effort into routine air conditioning maintenance is a proactive plan of action that can greatly benefit your entire HVAC system in the long run.