As the scorching summer heat starts to fade and the relief of fall starts to settle in, residents of Mount Hope 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 outdoor AC for the winter.

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

Here, the professionals at Appalachian Heating 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

Exterior AC units are supposed to withstand harsh weather conditions like snow in the winter. These machines are built with durable materials and parts that can handle the outdoor elements without damage. The coils and fins of the unit are constructed 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 outdoor air conditioning equipment in the cold months 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 generates the perfect conditions for mold and mildew to thrive.

Mold and mildew not only have a bad odor, 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 make sure the unit has proper drainage and keep the area around the unit clean of debris, allowing for efficient airflow and preventing moisture buildup.

3. A Covered Air Conditioner Can Host Animals

Human beings aren’t the only ones who prepare for winter. Animals that live around your home are also hunting for a warm, cozy place to hide out for the cold months. For many creatures, a covered air conditioner is an awesome winter home.

Birds, mice, chipmunks and even rats often make nests inside covered air conditioners. Animals living in a covered AC unit can cause several problems. Rodents can chew through wires, insulation and other parts, causing damage that may require costly repairs. Debris animals bring into the AC to construct a warm and comfortable nest can impair airflow and ventilation, decreasing the efficiency of the AC and potentially causing it to overheat. In addition, animal droppings can result in unsanitary conditions and potent odors.

Leaving your air conditioner uncovered helps discourage creatures, because an uncovered AC provides less shelter from chilly temperatures than a covered unit. That’s better for your air conditioner—and leaves you with less mess to throw away and things to repair once the snow melts.

4. A Winter Cover for AC Units Restricts Airflow

Another reason not to cover your AC unit in the winter is because a cover limits airflow through the unit. Adequate 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 maintain the desired temperature, leading to additional energy consumption and strain on the components.

In addition, if you use your air conditioning without noticing 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 proper airflow could cause the compressor to overheat, resulting in its failure or damage.  That’s why it is essential to ensure the outdoor unit is always cleared of any 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 lot more effective to do a little maintenance for your air conditioner than to cover your outdoor AC unit.

There are several key maintenance projects you should prioritize to ensure the best possible performance and longevity of your AC unit. First, it’s wise to check your outdoor AC unit regularly and clear any debris such as leaves, twigs and dirt to promote proper airflow. Second, examine and clean the coils, fins and filters to make sure they are free from dirt and dust buildup that would impede effective heat exchange or airflow.

Regular air conditioning maintenance not only improves 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 strategy that can significantly benefit your entire HVAC system in the long run.