As the scorching summer heat starts to fade and the refreshingly cool weather of fall starts to settle in, residents of Bartlesville start preparing their homes and yards for the winter. For many, that leads to the question of whether they need to cover their exterior air conditioning unit for the winter.

While it may seem like a smart idea, the fact is there are many reasons why you shouldn’t cover your AC unit in the winter. Along with not being something you need to do, covering your outdoor air conditioning equipment can even cause problems.

Here, the professionals at Farris Heating & Air 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 designed to withstand harsh weather conditions like snow in the wintertime. These units 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 designed to protect the internal elements from moisture and debris.

2. Covering AC Systems can Encourage 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 the opposite of what you want in your outdoor unit. That’s because sealing moisture inside the unit produces the perfect conditions for mold and mildew to flourish.

Mold and mildew not only have a bad aroma, but they can also create health risks, especially for household residents with respiratory issues or allergies. Also, the trapped 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 prepare for winter. Animals that live around your home are also hunting for a warm, cozy place to crash for the winter months. For many animals, a covered air conditioner is the perfect winter refuge.

Birds, mice, chipmunks and even rats commonly make winter dens inside covered air conditioners. Animals living in a covered air conditioner can cause numerous problems. Rats can chew through wires, insulation and other connections, causing damage that may require expensive repairs. Debris animals bring into the AC to create a warm and comfortable place to get out of the cold weather can block airflow and ventilation, reducing the efficiency of the appliance and potentially causing it to overheat. Additionally, animal excrement can result in unsanitary conditions and potent odors.

Leaving your air conditioner uncovered helps deter animals, because an uncovered AC gives them less shelter from the elements than a covered unit. That’s better for your AC—and leaves you with less mess to throw away and things to repair once the snow melts.

4. Covering Your Air Conditioner Restricts Airflow

Another reason you shouldn’t cover your AC unit in the winter is because a cover restricts airflow through the unit. Adequate airflow is crucial for the AC system because it assists heat exchange and enables the unit to cool efficiently. When airflow is restricted, the system has to work harder to reach the desired temperature, leading to additional energy consumption and strain on the components.

In addition, if you use your air conditioner without realizing that the outdoor unit is covered or because you simply forgot, it could result in a range of problems. One issue is that the shortage 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 has no blockages 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 much more effective to do a little maintenance for your cooling system than to cover your outside AC unit.

There are several key maintenance tasks you should prioritize to ensure optimal performance and longevity of your AC unit. First, it’s smart to check your outdoor AC unit regularly and get rid of any debris such as leaves, sticks and dirt to maintain proper airflow. Second, inspect and clean the coils, fins and filters to make sure they are free from dirt and dust buildup that would hinder successful heat exchange or airflow.

Routine 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, putting time and effort into routine air conditioning maintenance is a proactive strategy that can significantly benefit your entire HVAC system in the long run.