As the sweltering summer sun starts to fade and the relief of fall starts to settle in, residents of Goshen start preparing their homes and yards for the the upcoming cold weather. For many, that leads to the question of whether they need to cover their exterior AC for the winter.

While it may seem like a smart idea, the reality is there are a number of reasons why you shouldn’t cover your AC unit in the winter. In addition to not being necessary, covering your outdoor air conditioning equipment can sometimes cause problems.

Here, the experts at Just Right Heating and Cooling 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

Outdoor AC units are built to withstand harsh weather conditions like snow in the wintertime. These systems are built with durable 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 designed to protect the internal parts from moisture and debris.

2. Covering Your Air Conditioner Can Cause Mold

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

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

Rather than covering the unit, instead provide 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

You and your family aren’t the only ones who make plans for winter. Animals that live around your home are also looking for a warm, cozy place to live for the cold months. For many creatures, a covered air conditioner is an awesome winter home.

Birds, mice, chipmunks and even rats frequently make homes inside covered air conditioners. Animals living in a covered AC unit 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 construct a warm and comfortable nest can obstruct airflow and ventilation, lowering the efficiency of the appliance and potentially causing it to overheat. Moreover, animal excrement can result in unsanitary conditions and potent odors.

Leaving your air conditioner uncovered helps dissuade animals, because an uncovered AC provides less shelter from the elements than a covered unit. That’s better for your cooling system—and leaves you with less mess to clean up and things to repair in the spring.

4. A Winter Cover for AC Units Restricts Airflow

Another reason not to cover your air conditioning equipment in the winter is because a cover limits airflow through the unit. Proper airflow is vital for the AC system because it assists heat exchange and permits the unit to cool effectively. When airflow is severely limited, the system has to work harder to achieve the desired temperature, resulting in increased energy consumption and strain on the components.

In addition, if you run 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 absence of proper airflow could cause the compressor to overheat, causing its failure or damage.  That’s why it is essential to ensure the outdoor unit is always cleared of any blockages and is not covered to maintain optimal 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 several key maintenance activities you should prioritize to ensure the best possible function and longevity of your AC unit. First, it’s wise to check your outdoor AC unit regularly and pull out any debris such as leaves, small branches and dirt to promote proper airflow. Second, check and clean the coils, fins and filters to make sure you don't see any dirt and dust buildup that would hinder effective heat exchange or airflow.

Routine air conditioning maintenance not only boosts efficiency, but it also helps extend the unit's life span, lowers energy consumption and protects against costly repairs. Rather than using a cover, putting time and effort into routine air conditioning maintenance is a proactive strategy that can substantially benefit your entire HVAC system in the long run.