As the sweltering summer heat starts to fade and the cooler temperatures of fall starts to settle in, residents of Streamwood start preparing their homes and yards for the wintertime. For many, that leads to the question of whether they need to cover their outside AC for the winter.

While it may seem like a good idea, in reality there are many reasons why you shouldn’t cover your AC unit in the winter. On top of not being something you need to do, covering your outdoor air conditioning equipment can actually cause problems.

Here, the experts at Pure Comfort Heating and Air Conditioning 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. Your AC can Handle Snow

Exterior AC units are designed to withstand harsh weather conditions like snow in the winter. These units are built with sturdy 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 parts from moisture and debris.

2. Covering Your Air Conditioner Can Cause Mold

One of the reasons you should avoid covering your air conditioner in the cold months is because doing so can trap moisture—which is definitely not what you want in your outdoor unit. That’s because allowing moisture to collect inside the unit generates the perfect conditions for mold and mildew to spread.

Mold and mildew not only have a bad odor, but they can also create health risks, especially for household residents 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 cleared 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 searching for a warm, cozy place to crash for the winter months. For many creatures, a covered air conditioner is an ideal winter dwelling.

Birds, mice, chipmunks and even rats often make nests inside covered air conditioners. Animals residing 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 home can obstruct airflow and ventilation, decreasing the efficiency of the appliance and potentially causing it to overheat. Additionally, animal droppings can result in unsanitary conditions and bad odors.

Leaving your air conditioner uncovered helps dissuade wildlife, because an uncovered AC gives them less shelter from cold weather than a covered unit. That’s better for your cooling system—and leaves you with less mess to clean up and things to repair once the snow melts.

4. Covering Your Air Conditioner Restricts Airflow

Another reason not to cover your air conditioner in the winter is because a cover limits airflow through the unit. Suitable airflow is vital for the AC system because it helps with heat exchange and permits the unit to cool effectively. When airflow is reduced, the system has to work harder to reach the desired temperature, resulting in increased energy consumption and strain on the components.

In addition, if you use your air conditioning 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 absence of correct airflow could cause the compressor to overheat, leading to its failure or damage.  That’s why it is vital to ensure the outdoor unit has no obstructions and is not covered to maintain the best possible 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 air conditioning unit than to cover your outdoor AC unit.

There are several key maintenance tasks you should prioritize to ensure optimal operation and longevity of your AC unit. First, it’s a good idea to look at your outdoor AC unit regularly and clear any debris such as leaves, twigs and dirt to promote proper airflow. Second, examine and clean the coils, fins and filters to make sure there isn’t any dirt and dust buildup that would impede efficient heat exchange or airflow.

Scheduled air conditioning maintenance not only improves efficiency, but it also helps extend the unit’s life span, lowers energy consumption and avoids costly repairs. Rather than using a cover, investing time and effort into routine air conditioning maintenance is a proactive approach that can significantly benefit your entire HVAC system in the long run.