As the scorching summer heat starts to fade and the cooler temperatures 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 should cover their outdoor air conditioning unit for the winter.

While it may seem like a great idea, in reality there are several reasons why you shouldn’t cover your AC unit in the winter. Along with not being necessary, covering your outdoor air conditioning equipment can even cause problems.

Here, the experts at Cytech Heating & Cooling L.C. 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 Unit Isn’t Damaged by Snow

Outdoor AC units are designed to withstand harsh weather conditions like snow in the wintertime. These units are built with solid materials and components 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 crafted to protect the internal elements from moisture and debris.

2. Covered AC Systems may Encourage Mold Growth

One of the reasons you shouldn’t cover your air conditioner in the winter is because doing so can trap moisture—which is the opposite of 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 an undesirable aroma, but they can also create health risks, especially for individuals with respiratory issues or allergies. Additionally, the unwanted moisture can corrode the internal components of the AC unit.

Rather than 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. A Covered Air Conditioner Can Attract Animals

You and your family 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 animals, a covered air conditioner is an ideal winter dwelling.

Birds, mice, chipmunks and even rats frequently make homes inside covered air conditioners. Animals dwelling in a covered air conditioner can cause numerous problems. Rodents can chew through wires, insulation and other connections, causing damage that may require costly repairs. Debris animals bring into the AC to construct a warm and comfortable bed can obstruct airflow and ventilation, reducing the efficiency of the unit and potentially causing it to overheat. Moreover, animal droppings can result in unsanitary conditions and potent odors.

Leaving your air conditioner uncovered helps deter animals, because an uncovered AC provides less shelter from chilly temperatures than a covered unit. That’s better for your air conditioner—and leaves you with less mess to throw away and things to repair when winter is over.

4. Covering Your Air Conditioner Restricts Airflow

Another reason you shouldn't cover your air conditioner in the winter is because a cover restricts airflow through the unit. Adequate airflow is essential for the AC system because it assists heat exchange and enables the unit to cool effectively. When airflow is restricted, the system has to work harder to reach the desired temperature, resulting in increased energy consumption and strain on the components.

In addition, if you run your air conditioning without knowing that the exterior unit is covered or because you simply forgot, it could result in a range of problems. One issue is that the shortage of appropriate airflow could cause the compressor to overheat, leading to its failure or damage.  That’s why it is vital to ensure the outdoor unit has no barriers and is not covered to maintain maximum airflow.

5. AC Maintenance Works Better Than Covering Your Air Conditioner

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

There are numerous key maintenance tasks you should prioritize to ensure optimal operation and longevity of your AC unit. First, it’s wise to inspect your outdoor AC unit regularly and clear any debris such as leaves, twigs and dirt to maintain proper airflow. Second, examine and clean the coils, fins and filters to make sure they are free from dirt and dust buildup that would impede successful heat exchange or airflow.

Regular air conditioning maintenance not only boosts efficiency, but it also helps extend the unit's life span, decreases energy consumption and prevents 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.