As the scorching summer heat starts to fade and the relief of fall starts to settle in, residents of Circleville start preparing their homes and yards for the the upcoming cold weather. For many, that leads to the question of whether they should cover their outdoor air conditioning unit for the winter.

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

Here, the experts at Stephen Hurst Pack Heating and 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. Snow won’t Hurt Your AC

Exterior AC units are designed to withstand harsh weather conditions like snow in the wintertime. These units are built with solid 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. Covered AC Systems may Encourage Mold Growth

One of the reasons you should not cover your air conditioner in the winter 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 creates the perfect conditions for mold and mildew to thrive.

Mold and mildew not only have an unpleasant smell, 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.

Instead of 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 Host Animals

Human beings 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 live for the winter months. For many creatures, a covered air conditioner is the perfect winter dwelling.

Birds, mice, chipmunks and even rats commonly make winter dens inside covered air conditioners. Animals dwelling in a covered AC unit can cause many problems. Rats can chew through wires, insulation and other parts, causing damage that may require pricey repairs. Debris animals bring into the AC to make themselves a warm and comfortable bed can block airflow and ventilation, reducing the efficiency of the AC and potentially causing it to overheat. Moreover, animal waste can result in unsanitary conditions and foul odors.

Leaving your air conditioner uncovered helps deter creatures, because an uncovered AC offers 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 it’s better that you don’t cover your air conditioning equipment in the winter is because a cover blocks airflow through the unit. Suitable airflow is crucial for the AC system because it helps with heat exchange and permits the unit to cool properly. 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 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 absence of proper airflow could cause the compressor to overheat, causing its failure or damage.  That’s why it is crucial to ensure the outdoor unit is always cleared of any barriers and is not covered to maintain maximum airflow.

5. AC Maintenance Works Better 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 tasks you should prioritize to ensure optimal performance and longevity of your AC unit. First, it’s wise to inspect your outdoor AC unit regularly and clear any debris such as leaves, sticks and dirt to allow proper airflow. Second, check and clean the coils, fins and filters to make sure they are free from dirt and dust buildup that would prevent effective 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 protects against costly repairs. Rather than using a cover, putting time and effort into routine air conditioning maintenance is a proactive plan of action that can significantly benefit your entire HVAC system in the long run.