As the hot summer heat starts to fade and the relief of fall starts to settle in, residents of Wyandotte start preparing their homes and yards for the winter. For many, that leads to the question of whether they ought to cover their outdoor AC for the winter.

While it may seem like a smart idea, in reality there are several reasons why you shouldn’t cover your AC unit in the winter. On top of not being necessary, covering your outdoor air conditioning equipment can actually cause problems.

Here, the professionals at Gee & Missler Heating & Air Conditioning share five reasons why covering your AC 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

Outside AC units are designed to withstand harsh weather conditions like snow in the winter. These units are built with sturdy materials and hardware that can handle the outdoor elements without damage. The coils and fins of the unit are engineered to resist corrosion, and the housing is designed to protect the internal components from moisture and debris.

2. Covering AC Systems can Encourage Mold

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

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

As an alternative to covering the unit, instead provide 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 make plans for winter. Animals that live around your home are also looking for a warm, cozy place to live for the winter months. For many critters, a covered air conditioner is an ideal winter dwelling.

Birds, mice, chipmunks and even rats commonly make nests inside covered air conditioners. Animals living in a covered air conditioner can cause many problems. Rodents can chew through wires, insulation and other components, causing damage that may require pricey repairs. Debris animals bring into the AC to construct a warm and comfortable home can obstruct airflow and ventilation, limiting the efficiency of the unit and potentially causing it to overheat. In addition, animal waste can result in unsanitary conditions and bad odors.

Leaving your air conditioner uncovered helps dissuade animals, because an uncovered AC provides less shelter from cold weather than a covered unit. That’s better for your air conditioner—and leaves you with less mess to clean up and things to repair when winter is over.

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. Proper airflow is crucial for the AC system because it helps with heat exchange and allows the unit to cool properly. When airflow is restricted, the system has to work harder to achieve the desired temperature, resulting in 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 appropriate airflow could cause the compressor to overheat, causing its failure or damage.  That’s why it is essential to ensure the outdoor unit has no blockages and is not covered to maintain maximum airflow.

5. AC Maintenance Is More Effective Than Covering Your Air Conditioner

The bottom line is, it’s a whole lot more effective to do a little maintenance for your cooling system than to cover your exterior AC unit.

There are several key maintenance activities you should prioritize to ensure optimal operation and longevity of your AC unit. First, it’s smart to examine your outdoor AC unit regularly and pull out any debris such as leaves, sticks and dirt to promote proper airflow. Second, examine and clean the coils, fins and filters to make sure you don’t see any dirt and dust buildup that would impede efficient heat exchange or airflow.

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