As the scorching summer heat starts to fade and the cooler temperatures of fall starts to settle in, residents of Lodi start preparing their homes and yards for the the upcoming cold weather. For many, that leads to the question of whether they need to cover their outside air conditioner for the winter.

While it may seem like a smart 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 Tokay 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

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

2. Covered AC Systems may Encourage Mold Growth

One of the reasons you should avoid covering your air conditioner 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 sealing moisture inside the unit creates the perfect conditions for mold and mildew to thrive.

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

3. Your Covered Air Conditioning Unit Can Attract Animals

Human beings aren’t the only ones who make plans for winter. Animals that live around your home are also hunting for a warm, cozy place to live for the cold months. For many critters, a covered air conditioner is an ideal winter dwelling.

Birds, mice, chipmunks and even rats often make winter dens inside covered air conditioners. Animals dwelling 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 place to get out of the cold weather can impair airflow and ventilation, decreasing the efficiency of the unit and potentially causing it to overheat. In addition, animal droppings can result in unsanitary conditions and potent odors.

Leaving your air conditioner uncovered helps deter animals, because an uncovered AC offers less shelter from the elements than a covered unit. That’s better for your AC—and leaves you with less mess to throw away and things to repair in the spring.

4. A Winter Cover for AC Units Restricts Airflow

Another reason it’s better that you don’t cover your AC unit in the winter is because a cover blocks airflow through the unit. Proper airflow is crucial for the AC system because it facilitates heat exchange and allows the unit to cool properly. When airflow is severely limited, the system has to work harder to achieve the desired temperature, leading to increased energy consumption and strain on the components.

In addition, if you turn on your air conditioner 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 lack of correct airflow could cause the compressor to overheat, resulting in its failure or damage.  That’s why it is necessary to ensure the outdoor unit has no obstructions 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 lots more effective to do a little maintenance for your air conditioner than to cover your outside AC unit.

There are a number of key maintenance projects you should prioritize to ensure maximum function and longevity of your AC unit. First, it’s a good idea to check your outdoor AC unit regularly and get rid of any debris such as leaves, small branches 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 impede effective heat exchange or airflow.

Scheduled air conditioning maintenance not only enhances efficiency, but it also helps extend the unit’s life span, lowers energy consumption and avoids 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.