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

While it may seem like a great idea, the truth is there are many 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 Solar Air Inc. 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 can Handle Snow

Outside AC units are designed to withstand harsh weather conditions like snow in the winter season. These machines are built with solid materials and hardware 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 crafted to protect the internal parts from moisture and debris.

2. Covering AC Systems can Encourage Mold

One of the reasons you should avoid covering your AC unit in the wintertime is because doing so can trap moisture—which is not at all 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 spread.

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

Rather than 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 get ready for winter. Animals that live around your home are also searching for a warm, cozy place to hide out for the cold months. For many creatures, a covered air conditioner is the perfect winter home.

Birds, mice, chipmunks and even rats frequently make winter dens inside covered air conditioners. Animals dwelling in a covered air conditioner can cause numerous problems. Rats can chew through wires, insulation and other components, causing damage that may require expensive repairs. Debris animals bring into the AC to make themselves a warm and comfortable home can impair airflow and ventilation, limiting the efficiency of the unit and potentially causing it to overheat. Moreover, animal excrement can result in unsanitary conditions and foul odors.

Leaving your air conditioner uncovered helps deter creatures, because an uncovered AC offers less shelter from cold weather than a covered unit. That’s better for your AC—and leaves you with less mess to pick 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 blocks airflow through the unit. Proper airflow is crucial for the AC system because it facilitates heat exchange and enables the unit to cool efficiently. When airflow is reduced, the system has to work harder to reach the desired temperature, causing additional energy consumption and strain on the components.

In addition, if you turn on your air conditioning 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 lack of correct airflow could cause the compressor to overheat, leading to its failure or damage.  That’s why it is crucial 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 lots more effective to do a little maintenance for your air conditioning unit than to cover your outside AC unit.

There are several key maintenance tasks you should prioritize to ensure optimal operation and longevity of your AC unit. First, it’s wise to look at your outdoor AC unit regularly and remove 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 prevent efficient heat exchange or airflow.

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