As the hot summer sunshine starts to fade and the refreshingly cool weather of fall starts to settle in, residents of Neptune City start preparing their homes and yards for the winter. For many, that leads to the question of whether they should cover their outside air conditioner for the winter.

While it may seem like a great idea, in reality there are a number of 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 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 Unit Isn’t Damaged by Snow

Exterior AC units are supposed to withstand harsh weather conditions like snow in the winter season. These units are built with solid 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 manufactured to protect the internal components from moisture and debris.

2. Covered AC Systems may Encourage Mold Growth

One of the reasons you should avoid covering your outdoor air conditioning equipment in the cold months is because doing so can trap moisture—which is the opposite of what you want in your outdoor unit. That’s because allowing moisture to collect inside the unit produces the perfect conditions for mold and mildew to flourish.

Mold and mildew not only have an unpleasant odor, but they can also create health risks, especially for people with respiratory issues or allergies. Additionally, 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 free of debris, allowing for efficient airflow and preventing moisture buildup.

3. A Covered Air Conditioner Can Attract Animals

Humans aren’t the only ones who prepare for winter. Animals that live around your home are also searching for a warm, cozy place to crash for the wintry months. For many creatures, a covered air conditioner is an awesome winter home.

Birds, mice, chipmunks and even rats often make nests inside covered air conditioners. Animals living in a covered AC unit can cause many problems. Rats 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 bed can obstruct airflow and ventilation, lowering the efficiency of the unit and potentially causing it to overheat. Moreover, animal droppings can result in unsanitary conditions and foul odors.

Leaving your air conditioner uncovered helps deter creatures, because an uncovered AC offers less shelter from chilly temperatures than a covered unit. That’s better for your cooling system—and leaves you with less mess to throw away and things to repair in the spring.

4. A Winter Cover for AC Units Restricts Airflow

Another reason you shouldn’t cover your air conditioning equipment in the winter is because a cover blocks airflow through the unit. Proper airflow is crucial for the AC system because it assists heat exchange and allows the unit to cool properly. When airflow is restricted, the system has to work harder to maintain the desired temperature, resulting in increased energy consumption and strain on the components.

In addition, if you use your AC without noticing 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 appropriate airflow could cause the compressor to overheat, leading to its failure or damage.  That’s why it is vital to ensure the outdoor unit is free from barriers and is not covered to maintain maximum airflow.

5. AC Maintenance Offers More Benefits 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 outdoor AC unit.

There are a number of key maintenance tasks you should prioritize to ensure optimal operation and longevity of your AC unit. First, it’s a good idea to inspect your outdoor AC unit regularly and remove any debris such as leaves, twigs and dirt to maintain proper airflow. Second, inspect and clean the coils, fins and filters to make sure you don’t see any dirt and dust buildup that would hinder efficient heat exchange or airflow.

Regular air conditioning maintenance not only enhances efficiency, but it also helps extend the unit’s life span, decreases energy consumption and protects against costly repairs. Rather than using a cover, investing time and effort into routine air conditioning maintenance is a proactive plan of action that can significantly benefit your entire HVAC system in the long run.