As the scorching summer heat starts to fade and the cooler temperatures of fall starts to settle in, residents of Greensburg 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 air conditioner for the winter.

While it may seem like a smart idea, in reality there are a number of 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 sometimes cause problems.

Here, the specialists at Wallpe Heating & Cooling share five reasons why covering your air conditioner 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 designed to withstand harsh weather conditions like snow in the winter season. These systems are built with durable materials and parts 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 manufactured 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 outdoor air conditioning equipment in the wintertime is because doing so can trap moisture—which is definitely not what you want in your outdoor unit. That’s because trapping moisture inside the unit generates the perfect conditions for mold and mildew to thrive.

Mold and mildew not only have an unpleasant aroma, but they can also pose health risks, especially for household residents with respiratory issues or allergies. Also, the trapped 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

People aren’t the only ones who get ready for winter. Animals that live around your home are also looking for a warm, cozy place to crash for the wintry months. For many animals, a covered air conditioner is the perfect winter home.

Birds, mice, chipmunks and even rats frequently make homes inside covered air conditioners. Animals living in a covered air conditioner can cause numerous problems. Rodents can chew through wires, insulation and other connections, causing damage that may require costly repairs. Debris animals bring into the AC to make themselves a warm and comfortable home can impair airflow and ventilation, decreasing the efficiency of the appliance and potentially causing it to overheat. Moreover, animal droppings can result in unsanitary conditions and potent odors.

Leaving your air conditioner uncovered helps deter creatures, because an uncovered AC provides less shelter from chilly temperatures than a covered unit. That’s better for your cooling system—and leaves you with less mess to pick 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. Proper airflow is vital for the AC system because it facilitates heat exchange and allows the unit to cool efficiently. When airflow is restricted, 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 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 proper airflow could cause the compressor to overheat, leading to its failure or damage.  That’s why it is essential to ensure the outdoor unit has no obstructions 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 whole lot more effective to do a little maintenance for your air conditioning unit than to cover your exterior AC unit.

There are a number of key maintenance activities you should prioritize to ensure the best possible operation and longevity of your AC unit. First, it’s wise to look at your outdoor AC unit regularly and clear any debris such as leaves, small branches 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 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 avoids costly repairs. Rather than using a cover, investing time and effort into routine air conditioning maintenance is a proactive approach that can substantially benefit your entire HVAC system in the long run.