As the scorching summer sunshine starts to fade and the cooler temperatures of fall starts to settle in, residents of Litchfield Park start preparing their homes and yards for the winter. For many, that leads to the question of whether they ought to cover their outdoor AC for the winter.

While it may seem like a great idea, in reality there are several 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 experts at Cooler Tymes 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. Snow won’t Hurt Your AC

Outdoor AC units are designed to withstand harsh weather conditions like snow in the winter season. 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 specially developed to resist corrosion, and the housing is designed to protect the internal elements from moisture and debris.

2. Covering Your Air Conditioner Can Cause Mold

One of the reasons you should not cover your AC unit in the winter is because doing so can trap moisture—which is not at all 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 undesirable aroma, but they can also pose health risks, especially for household residents with respiratory issues or allergies. Also, the unwanted moisture can corrode the internal components of the AC unit.

Instead of 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. Covered AC Systems Can Attract Animals

Humans aren’t the only ones who get ready 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 creatures, a covered air conditioner is the perfect winter dwelling.

Birds, mice, chipmunks and even rats commonly make winter dens inside covered air conditioners. Animals living in a covered air conditioner can cause many problems. Mice 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, lowering 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 dissuade animals, because an uncovered AC gives them less shelter from chilly temperatures than a covered unit. That’s better for your AC—and leaves you with less mess to throw away and things to repair in the spring.

4. Covering Your Air Conditioner Restricts Airflow

Another reason not to cover your air conditioner in the winter is because a cover restricts airflow through the unit. Adequate airflow is vital for the AC system because it assists heat exchange and enables the unit to cool efficiently. When airflow is severely limited, the system has to work harder to achieve the desired temperature, resulting in additional energy consumption and strain on the components.

In addition, if you turn on 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 absence of appropriate airflow could cause the compressor to overheat, resulting in its failure or damage.  That’s why it is necessary 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 air conditioner than to cover your exterior AC unit.

There are numerous key maintenance tasks you should prioritize to ensure optimal function and longevity of your AC unit. First, it’s a good idea to inspect your outdoor AC unit regularly and clear any debris such as leaves, sticks and dirt to allow proper airflow. Second, check and clean the coils, fins and filters to make sure there isn’t any dirt and dust buildup that would hinder effective heat exchange or airflow.

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