As the sweltering summer sunshine starts to fade and the cooler temperatures of fall starts to settle in, residents of Hudsonville start preparing their homes and yards for the wintertime. For many, that leads to the question of whether they should cover their exterior air conditioning unit for the winter.

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

Here, the specialists at West Michigan Heating & Air Conditioning Services 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 supposed to withstand harsh weather conditions like snow in the winter season. These systems are built with durable materials and parts that can handle the outdoor elements without damage. The coils and fins of the unit are engineered to resist corrosion, and the housing is crafted to protect the internal components from moisture and debris.

2. Covering Your Air Conditioner Can Cause Mold

One of the reasons you shouldn’t cover your air conditioner 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 allowing moisture to collect inside the unit produces the perfect conditions for mold and mildew to flourish.

Mold and mildew not only have an undesirable smell, but they can also create health risks, especially for household residents with respiratory issues or allergies. Plus, the excess 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 free of debris, allowing for efficient airflow and preventing moisture buildup.

3. Covered AC Systems Can Host Animals

You and your family aren’t the only ones who prepare for winter. Animals that live around your home are also hunting for a warm, cozy place to live for the wintry months. For many animals, a covered air conditioner is the perfect winter refuge.

Birds, mice, chipmunks and even rats commonly make winter dens inside covered air conditioners. Animals residing in a covered AC unit can cause numerous problems. Mice can chew through wires, insulation and other parts, causing damage that may require costly repairs. Debris animals bring into the AC to make themselves a warm and comfortable nest can block airflow and ventilation, decreasing the efficiency of the unit and potentially causing it to overheat. Additionally, animal droppings can result in unsanitary conditions and foul odors.

Leaving your air conditioner uncovered helps discourage creatures, because an uncovered AC offers less shelter from the elements than a covered unit. That’s better for your cooling system—and leaves you with less mess to throw away and things to repair in the spring.

4. A Winter Cover for AC Units Restricts Airflow

Another reason not to cover your air conditioning equipment in the winter is because a cover restricts airflow through the unit. Adequate airflow is essential for the AC system because it helps with heat exchange and enables the unit to cool efficiently. When airflow is reduced, the system has to work harder to achieve the desired temperature, causing additional energy consumption and strain on the components.

In addition, if you run your air conditioner without realizing 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 proper 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 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 lot more effective to do a little maintenance for your air conditioning unit than to cover your outdoor AC unit.

There are numerous key maintenance activities you should prioritize to ensure optimal performance and longevity of your AC unit. First, it’s a good idea to examine your outdoor AC unit regularly and remove any debris such as leaves, sticks and dirt to maintain proper airflow. Second, check and clean the coils, fins and filters to make sure there isn’t any dirt and dust buildup that would prevent effective heat exchange or airflow.

Scheduled air conditioning maintenance not only improves efficiency, but it also helps extend the unit’s life span, reduces energy consumption and protects against costly repairs. Rather than using a cover, investing time and effort into routine air conditioning maintenance is a proactive plan of action that can greatly benefit your entire HVAC system in the long run.