As the scorching summer sunshine starts to fade and the relief of fall starts to settle in, residents of Fredericksburg start preparing their homes and yards for the wintertime. For many, that leads to the question of whether they ought to cover their exterior air conditioning unit for the winter.

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

Here, the professionals at Childress Heating & AC share five reasons why covering your air conditioner 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 sturdy 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 elements from moisture and debris.

2. Covering Your Air Conditioner Can Cause Mold

One of the reasons you should avoid covering your outdoor air conditioning equipment in the wintertime is because doing so can trap moisture—which is the opposite of what you want in your outdoor unit. That’s because allowing moisture to collect inside the unit generates the perfect conditions for mold and mildew to flourish.

Mold and mildew not only have an undesirable smell, but they can also pose health risks, especially for people with respiratory issues or allergies. Also, 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 free of debris, allowing for efficient airflow and preventing moisture buildup.

3. A Covered Air Conditioner Can Attract Animals

Human beings aren’t the only ones who get ready for winter. Animals that live around your home are also looking for a warm, cozy place to hide out for the winter months. For many animals, a covered air conditioner is an awesome winter refuge.

Birds, mice, chipmunks and even rats often make winter dens inside covered air conditioners. Animals dwelling in a covered air conditioner can cause many problems. Mice can chew through wires, insulation and other parts, causing damage that may require expensive repairs. Debris animals bring into the AC to make themselves a warm and comfortable bed can obstruct airflow and ventilation, limiting the efficiency of the AC and potentially causing it to overheat. In addition, animal excrement can result in unsanitary conditions and potent odors.

Leaving your air conditioner uncovered helps deter animals, because an uncovered AC provides less shelter from cold weather than a covered unit. That’s better for your cooling system—and leaves you with less mess to clean up and things to repair in the spring.

4. Covering Your Air Conditioner Restricts Airflow

Another reason not to cover your air conditioning equipment in the winter is because a cover blocks airflow through the unit. Adequate airflow is crucial for the AC system because it helps with heat exchange and permits the unit to cool effectively. When airflow is constrained, the system has to work harder to maintain the desired temperature, resulting in increased energy consumption and strain on the components.

In addition, if you use 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 lack of appropriate airflow could cause the compressor to overheat, leading to its failure or damage.  That’s why it is necessary 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 conditioning unit than to cover your outdoor AC unit.

There are several key maintenance tasks you should prioritize to ensure the best possible performance and longevity of your AC unit. First, it’s wise to check your outdoor AC unit regularly and get rid of any debris such as leaves, small branches and dirt to maintain proper airflow. Second, inspect 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.

Scheduled 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 plan of action that can greatly benefit your entire HVAC system in the long run.