As the sweltering summer sun starts to fade and the relief of fall starts to settle in, residents of McAllen start preparing their homes and yards for the wintertime. For many, that leads to the question of whether they need to cover their outside air conditioning unit for the winter.

While it may seem like a great idea, in reality there are a number of 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 sometimes cause problems.

Here, the experts at Cytech Heating & Cooling L.C. 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 designed to withstand harsh weather conditions like snow in the wintertime. These systems are built with durable materials and hardware that can handle the outdoor elements without damage. The coils and fins of the unit are specially developed to resist corrosion, and the housing is designed to protect the internal components from moisture and debris.

2. Covering AC Systems can Encourage Mold

One of the reasons you should not cover your outdoor air conditioning equipment 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 creates the perfect conditions for mold and mildew to flourish.

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. Additionally, 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 clean of debris, allowing for efficient airflow and preventing moisture buildup.

3. Your Covered Air Conditioning Unit Can Host Animals

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

Birds, mice, chipmunks and even rats often make nests inside covered air conditioners. Animals living in a covered air conditioning unit can cause numerous problems. Mice can chew through wires, insulation and other components, causing damage that may require costly repairs. Debris animals bring into the AC to make themselves a warm and comfortable home can obstruct airflow and ventilation, lowering the efficiency of the AC and potentially causing it to overheat. Additionally, animal excrement can result in unsanitary conditions and bad odors.

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

4. A Winter Cover for AC Units Restricts Airflow

Another reason you shouldn’t cover your air conditioner in the winter is because a cover blocks airflow through the unit. Adequate airflow is essential for the AC system because it assists heat exchange and permits the unit to cool properly. When airflow is restricted, the system has to work harder to maintain the desired temperature, resulting in greater energy consumption and strain on the components.

In addition, if you use your air conditioning without noticing that the exterior 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 necessary to ensure the outdoor unit is always cleared of any blockages and is not covered to maintain maximum airflow.

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

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

There are a number of key maintenance tasks you should prioritize to ensure optimal performance and longevity of your AC unit. First, it’s smart to look at your outdoor AC unit regularly and remove any debris such as leaves, sticks and dirt to allow 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 effective heat exchange or airflow.

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