As the sweltering summer heat starts to fade and the refreshingly cool weather of fall starts to settle in, residents of Kankakee start preparing their homes and yards for the wintertime. For many, that leads to the question of whether they ought to cover their outside air conditioner for the winter.

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

Here, the specialists at Home Furniture, Plumbing & Heating 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

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

2. Covered AC Systems may Encourage Mold Growth

One of the reasons you shouldn’t cover 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 sealing moisture inside the unit generates the perfect conditions for mold and mildew to spread.

Mold and mildew not only have an unpleasant aroma, but they can also present health risks, especially for individuals with respiratory issues or allergies. Plus, the excess 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 free of debris, allowing for efficient airflow and preventing moisture buildup.

3. Covered AC Systems 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 live for the cold months. For many creatures, a covered air conditioner is the perfect winter refuge.

Birds, mice, chipmunks and even rats commonly make winter dens inside covered air conditioners. Animals dwelling in a covered AC unit can cause numerous problems. Mice 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 place to get out of the cold weather can block airflow and ventilation, limiting the efficiency of the unit and potentially causing it to overheat. In addition, animal droppings can result in unsanitary conditions and foul odors.

Leaving your air conditioner uncovered helps dissuade 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 throw away and things to repair when winter is over.

4. An AC Cover Restricts Airflow

Another reason not to cover your AC unit in the winter is because a cover limits airflow through the unit. Suitable airflow is crucial for the AC system because it assists heat exchange and enables the unit to cool efficiently. When airflow is constrained, the system has to work harder to maintain the desired temperature, causing additional energy consumption and strain on the components.

In addition, if you run your AC without noticing that the outside unit is covered or because you simply forgot, it could result in a range of problems. One issue is that the shortage of appropriate airflow could cause the compressor to overheat, leading to its failure or damage.  That’s why it is vital to ensure the outdoor unit is always cleared of any barriers and is not covered to maintain the best possible 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 cooling system than to cover your exterior AC unit.

There are several key maintenance activities you should prioritize to ensure the best possible operation and longevity of your AC unit. First, it’s smart to examine your outdoor AC unit regularly and clear any debris such as leaves, sticks and dirt to maintain 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 efficient heat exchange or airflow.

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