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

While it may seem like a great idea, the truth is there are multiple reasons why you shouldn’t cover your AC unit in the winter. In addition to not being something you need to do, covering your outdoor air conditioning equipment can actually cause problems.

Here, the specialists at HCE Systems 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

Outside AC units are built to withstand harsh weather conditions like snow in the winter. These machines are built with solid materials and parts 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 components from moisture and debris.

2. Covering AC Systems can Encourage Mold

One of the reasons you should not cover your outdoor air conditioning equipment in the wintertime is because doing so can trap moisture—which is definitely not what you want in your outdoor unit. That’s because trapping moisture inside the unit produces the perfect conditions for mold and mildew to thrive.

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

As an alternative to covering the unit, instead ensure proper drainage and keep the area around the unit free of debris, allowing for efficient airflow and preventing moisture buildup.

3. Covered AC Systems Can Attract Animals

Human beings 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 critters, a covered air conditioner is the perfect winter home.

Birds, mice, chipmunks and even rats often make nests inside covered air conditioners. Animals dwelling in a covered air conditioning unit can cause numerous problems. Rats can chew through wires, insulation and other parts, causing damage that may require expensive repairs. Debris animals bring into the AC to construct a warm and comfortable place to get out of the cold weather can impair airflow and ventilation, limiting the efficiency of the unit and potentially causing it to overheat. Additionally, animal waste can result in unsanitary conditions and potent odors.

Leaving your air conditioner uncovered helps discourage animals, because an uncovered AC gives them less shelter from chilly temperatures than a covered unit. That’s better for your air conditioner—and leaves you with less mess to pick 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 air conditioning equipment in the winter is because a cover limits airflow through the unit. Adequate airflow is essential for the AC system because it assists heat exchange and permits the unit to cool properly. When airflow is reduced, the system has to work harder to achieve the desired temperature, causing 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 appropriate airflow could cause the compressor to overheat, leading to its failure or damage.  That’s why it is crucial to ensure the outdoor unit has no barriers and is not covered to maintain maximum 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 cooling system than to cover your exterior AC unit.

There are several key maintenance tasks you should prioritize to ensure maximum function and longevity of your AC unit. First, it’s smart to check your outdoor AC unit regularly and get rid of any debris such as leaves, small branches and dirt to promote proper airflow. Second, examine 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.

Routine air conditioning maintenance not only improves efficiency, but it also helps extend the unit’s life span, reduces energy consumption and avoids costly repairs. Rather than using a cover, investing 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.