As the sweltering summer heat starts to fade and the cooler temperatures of fall starts to settle in, residents of Corpus Christi start preparing their homes and yards for the wintertime. For many, that leads to the question of whether they should cover their outdoor air conditioner for the winter.

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

Here, the experts at Total Assurance AC & Heating 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 can Handle Snow

Outdoor AC units are built to withstand harsh weather conditions like snow in the winter. These systems 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 parts from moisture and debris.

2. Covering AC Systems can Encourage Mold

One of the reasons you should avoid covering your AC unit in the winter is because doing so can trap moisture—which is not at all what you want in your outdoor unit. That’s because sealing moisture inside the unit creates the perfect conditions for mold and mildew to flourish.

Mold and mildew not only have an unpleasant odor, but they can also pose health risks, especially for people with respiratory issues or allergies. Plus, the excess 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 clear of debris, allowing for efficient airflow and preventing moisture buildup.

3. A Covered Air Conditioner Can Host Animals

People aren’t the only ones who prepare for winter. Animals that live around your home are also hunting for a warm, cozy place to hide out for the winter months. For many critters, a covered air conditioner is the perfect winter home.

Birds, mice, chipmunks and even rats often make nests inside covered air conditioners. Animals dwelling in a covered air conditioner can cause numerous problems. Rats can chew through wires, insulation and other connections, causing damage that may require expensive repairs. Debris animals bring into the AC to make themselves a warm and comfortable place to get out of the cold weather can obstruct airflow and ventilation, lowering the efficiency of the appliance and potentially causing it to overheat. Additionally, animal droppings can result in unsanitary conditions and potent odors.

Leaving your air conditioner uncovered helps discourage wildlife, because an uncovered AC gives them 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 once the snow melts.

4. Covering Your Air Conditioner Restricts Airflow

Another reason not to cover your AC unit in the winter is because a cover blocks airflow through the unit. Proper airflow is vital for the AC system because it facilitates heat exchange and allows the unit to cool efficiently. When airflow is severely limited, 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 knowing that the outdoor unit is covered or because you simply forgot, it could result in a range of problems. One issue is that the lack of correct airflow could cause the compressor to overheat, causing its failure or damage.  That’s why it is crucial to ensure the outdoor unit has no blockages and is not covered to maintain optimal 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 cooling system than to cover your outside AC unit.

There are numerous key maintenance tasks you should prioritize to ensure the best possible performance and longevity of your AC unit. First, it’s wise to look at your outdoor AC unit regularly and pull out any debris such as leaves, twigs and dirt to maintain proper airflow. Second, inspect and clean the coils, fins and filters to make sure you don’t see any dirt and dust buildup that would prevent successful 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 avoids costly repairs. Rather than using a cover, committing time and effort into routine air conditioning maintenance is a proactive strategy that can substantially benefit your entire HVAC system in the long run.