As the hot summer sun starts to fade and the cooler temperatures of fall starts to settle in, residents of Neptune City start preparing their homes and yards for the the upcoming cold weather. For many, that leads to the question of whether they ought to cover their exterior air conditioning unit for the winter.

While it may seem like a good idea, the truth 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 actually cause problems.

Here, the professionals at Aggressive Mechanical 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 designed to withstand harsh weather conditions like snow in the winter. These systems are built with sturdy materials and hardware that can handle the outdoor elements without damage. The coils and fins of the unit are engineered 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 cold months 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 creates the perfect conditions for mold and mildew to flourish.

Mold and mildew not only have a bad aroma, but they can also pose health risks, especially for individuals with respiratory issues or allergies. Also, the excess moisture can corrode the internal components of the AC unit.

As an alternative to 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. Covered AC Systems Can Attract Animals

Human beings aren’t the only ones who make plans for winter. Animals that live around your home are also searching for a warm, cozy place to hide out for the wintry months. For many creatures, a covered air conditioner is an awesome winter refuge.

Birds, mice, chipmunks and even rats frequently make winter dens inside covered air conditioners. Animals dwelling in a covered air conditioning unit can cause several problems. Rats can chew through wires, insulation and other connections, causing damage that may require pricey repairs. Debris animals bring into the AC to create a warm and comfortable bed can impair airflow and ventilation, lowering 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 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 pick up and things to repair in the spring.

4. Covering Your Air Conditioner 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. Proper airflow is essential for the AC system because it helps with heat exchange and enables the unit to cool effectively. When airflow is severely limited, the system has to work harder to maintain the desired temperature, causing increased energy consumption and strain on the components.

In addition, if you run your air conditioning without realizing that the exterior unit is covered or because you simply forgot, it could result in a range of problems. One issue is that the lack of proper airflow could cause the compressor to overheat, causing its failure or damage.  That’s why it is necessary to ensure the outdoor unit is free from 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 a lot more effective to do a little maintenance for your air conditioning unit than to cover your outside AC unit.

There are numerous key maintenance projects you should prioritize to ensure optimal performance and longevity of your AC unit. First, it’s a good idea to examine your outdoor AC unit regularly and get rid of any debris such as leaves, twigs and dirt to maintain 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 protects against costly repairs. Rather than using a cover, putting time and effort into routine air conditioning maintenance is a proactive approach that can significantly benefit your entire HVAC system in the long run.