As the scorching summer sun starts to fade and the cooler temperatures of fall starts to settle in, residents of Genoa start preparing their homes and yards for the wintertime. For many, that leads to the question of whether they ought to cover their outdoor air conditioner 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 Assured Appliance & Heating & Air 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 Unit Isn’t Damaged by Snow

Outside AC units are designed to withstand harsh weather conditions like snow in the winter. 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 engineered to resist corrosion, and the housing is crafted 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 AC unit 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 trapping moisture inside the unit generates the perfect conditions for mold and mildew to thrive.

Mold and mildew not only have a bad odor, but they can also present health risks, especially for people with respiratory issues or allergies. Also, the trapped 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 clear of debris, allowing for efficient airflow and preventing moisture buildup.

3. Covered AC Systems Can Host Animals

People aren’t the only ones who make plans 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 refuge.

Birds, mice, chipmunks and even rats commonly make nests inside covered air conditioners. Animals dwelling in a covered air conditioner can cause numerous problems. Rodents 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 home can obstruct airflow and ventilation, reducing the efficiency of the AC and potentially causing it to overheat. Additionally, animal droppings can result in unsanitary conditions and bad odors.

Leaving your air conditioner uncovered helps discourage animals, because an uncovered AC gives them less shelter from chilly temperatures than a covered unit. That’s better for your cooling system—and leaves you with less mess to clean up and things to repair when winter is over.

4. Covering Your Air Conditioner Restricts Airflow

Another reason it’s better that you don’t cover your air conditioning equipment in the winter is because a cover restricts airflow through the unit. Adequate airflow is vital for the AC system because it assists heat exchange and enables the unit to cool properly. When airflow is severely limited, the system has to work harder to reach the desired temperature, resulting in additional 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 correct airflow could cause the compressor to overheat, causing its failure or damage.  That’s why it is essential to ensure the outdoor unit is always cleared of any obstructions and is not covered to maintain the best possible 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 air conditioner than to cover your outside AC unit.

There are several key maintenance activities you should prioritize to ensure the best possible operation and longevity of your AC unit. First, it’s a good idea to examine your outdoor AC unit regularly and get rid of any debris such as leaves, small branches and dirt to allow proper airflow. Second, examine and clean the coils, fins and filters to make sure there isn’t any dirt and dust buildup that would prevent successful heat exchange or airflow.

Routine air conditioning maintenance not only boosts efficiency, but it also helps extend the unit’s life span, lowers energy consumption and prevents costly repairs. Rather than using a cover, investing 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.