As the hot summer sunshine starts to fade and the relief of fall starts to settle in, residents of Kankakee 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 outside AC for the winter.

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

Here, the experts at Home Furniture, Plumbing & 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

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

2. Covered AC Systems may Encourage Mold Growth

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 sealing moisture inside the unit creates the perfect conditions for mold and mildew to spread.

Mold and mildew not only have a bad odor, but they can also present health risks, especially for household residents with respiratory issues or allergies. Plus, the unwanted 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 clear of debris, allowing for efficient airflow and preventing moisture buildup.

3. Your Covered Air Conditioning Unit Can Host Animals

Humans aren’t the only ones who prepare for winter. Animals that live around your home are also searching for a warm, cozy place to crash for the cold months. For many creatures, a covered air conditioner is an ideal winter refuge.

Birds, mice, chipmunks and even rats often make winter dens inside covered air conditioners. Animals dwelling in a covered air conditioning unit can cause many problems. Mice can chew through wires, insulation and other connections, causing damage that may require pricey repairs. Debris animals bring into the AC to create a warm and comfortable nest can obstruct airflow and ventilation, lowering the efficiency of the appliance and potentially causing it to overheat. Moreover, animal excrement can result in unsanitary conditions and foul odors.

Leaving your air conditioner uncovered helps discourage animals, because an uncovered AC gives them 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. A Winter Cover for AC Units Restricts Airflow

Another reason you shouldn’t cover your air conditioning equipment in the winter is because a cover blocks airflow through the unit. Proper airflow is essential for the AC system because it assists heat exchange and enables the unit to cool properly. When airflow is constrained, the system has to work harder to achieve the desired temperature, causing greater energy consumption and strain on the components.

In addition, if you run your AC 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 appropriate airflow could cause the compressor to overheat, leading to 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 optimal airflow.

5. AC Maintenance Offers More Benefits Than Covering Your Air Conditioner

The bottom line is, it’s lots more effective to do a little maintenance for your air conditioner than to cover your exterior AC unit.

There are several key maintenance tasks you should prioritize to ensure maximum operation and longevity of your AC unit. First, it’s a good idea to inspect your outdoor AC unit regularly and clear any debris such as leaves, twigs and dirt to allow proper airflow. Second, inspect and clean the coils, fins and filters to make sure you don’t see any dirt and dust buildup that would prevent successful heat exchange or airflow.

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