As the sweltering summer sun starts to fade and the relief of fall starts to settle in, residents of Front Royal start preparing their homes and yards for the winter. For many, that leads to the question of whether they ought to cover their exterior AC for the winter.

While it may seem like a smart idea, the reality is 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 experts at Dave's Diversified Services 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 wintertime. 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 designed to protect the internal parts from moisture and debris.

2. Covering AC Systems can Encourage Mold

One of the reasons you should avoid covering your outdoor air conditioning equipment in the winter is because doing so can trap moisture—which is definitely not what you want in your outdoor unit. That’s because sealing moisture inside the unit generates the perfect conditions for mold and mildew to thrive.

Mold and mildew not only have an unpleasant smell, 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.

Instead of covering the unit, instead ensure 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 Host Animals

You and your family 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 wintry months. For many creatures, a covered air conditioner is an ideal winter refuge.

Birds, mice, chipmunks and even rats frequently make winter dens inside covered air conditioners. Animals dwelling in a covered air conditioning unit can cause numerous problems. Rats can chew through wires, insulation and other parts, causing damage that may require pricey 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 AC and potentially causing it to overheat. Moreover, animal droppings can result in unsanitary conditions and bad odors.

Leaving your air conditioner uncovered helps deter animals, because an uncovered AC gives them less shelter from the elements than a covered unit. That’s better for your air conditioner—and leaves you with less mess to pick up and things to repair in the spring.

4. Covering Your Air Conditioner Restricts Airflow

Another reason it’s better that you don’t cover your AC unit in the winter is because a cover limits airflow through the unit. Adequate airflow is essential for the AC system because it facilitates heat exchange and permits the unit to cool effectively. When airflow is constrained, 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 run your AC 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 absence of proper airflow could cause the compressor to overheat, causing its failure or damage.  That’s why it is vital to ensure the outdoor unit is always cleared of any obstructions 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 much more effective to do a little maintenance for your air conditioning unit than to cover your outside AC unit.

There are a number of key maintenance projects you should prioritize to ensure the best possible operation 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, twigs and dirt to allow proper airflow. Second, examine and clean the coils, fins and filters to make sure there isn’t any dirt and dust buildup that would hinder effective 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 avoids costly repairs. Rather than using a cover, putting time and effort into routine air conditioning maintenance is a proactive plan of action that can substantially benefit your entire HVAC system in the long run.