As the scorching summer sun starts to fade and the refreshingly cool weather of fall starts to settle in, residents of Covington start preparing their homes and yards for the wintertime. For many, that leads to the question of whether they ought to cover their outside air conditioning unit for the winter.

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

Here, the specialists at Covington Air Systems 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

Outside AC units are built to withstand harsh weather conditions like snow in the winter season. These systems are built with solid 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 crafted to protect the internal parts from moisture and debris.

2. Covered AC Systems may Encourage Mold Growth

One of the reasons you should not cover your air conditioner in the cold months 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 creates the perfect conditions for mold and mildew to flourish.

Mold and mildew not only have an unpleasant aroma, but they can also pose health risks, especially for people with respiratory issues or allergies. Additionally, the trapped moisture can corrode the internal components of the AC unit.

As an alternative to covering the unit, instead make sure the unit has proper drainage and keep the area around the unit free 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 prepare for winter. Animals that live around your home are also searching for a warm, cozy place to live for the winter months. For many animals, a covered air conditioner is the perfect winter dwelling.

Birds, mice, chipmunks and even rats often make winter dens inside covered air conditioners. Animals residing in a covered air conditioning unit can cause many problems. Rats can chew through wires, insulation and other components, causing damage that may require pricey repairs. Debris animals bring into the AC to create a warm and comfortable nest can obstruct airflow and ventilation, reducing the efficiency of the unit and potentially causing it to overheat. Additionally, animal droppings can result in unsanitary conditions and bad odors.

Leaving your air conditioner uncovered helps deter wildlife, because an uncovered AC gives them less shelter from the elements 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 it’s better that you don’t cover your AC unit in the winter is because a cover limits airflow through the unit. Suitable airflow is essential for the AC system because it facilitates heat exchange and permits the unit to cool effectively. When airflow is severely limited, the system has to work harder to reach the desired temperature, causing greater energy consumption and strain on the components.

In addition, if you turn on 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 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 has no 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 a lot 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 function 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, examine and clean the coils, fins and filters to make sure they are free from dirt and dust buildup that would hinder effective heat exchange or airflow.

Scheduled air conditioning maintenance not only boosts 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 plan of action that can substantially benefit your entire HVAC system in the long run.