As the hot summer sunshine starts to fade and the refreshingly cool weather of fall starts to settle in, residents of Hasbrouck Heights start preparing their homes and yards for the winter. For many, that leads to the question of whether they ought to cover their exterior air conditioner for the winter.

While it may seem like a great idea, in reality there are a number of reasons why you shouldn’t cover your AC unit in the winter. On top of not being something you need to do, covering your outdoor air conditioning equipment can even cause problems.

Here, the experts at ACE Solutions 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 supposed to withstand harsh weather conditions like snow in the winter season. 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 parts from moisture and debris.

2. Covering AC Systems can Encourage Mold

One of the reasons you shouldn’t cover your air conditioner in the wintertime 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 generates the perfect conditions for mold and mildew to thrive.

Mold and mildew not only have an undesirable odor, but they can also present health risks, especially for individuals with respiratory issues or allergies. Also, the trapped 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. Covered AC Systems Can Attract Animals

You and your family aren’t the only ones who get ready for winter. Animals that live around your home are also hunting for a warm, cozy place to crash for the winter months. For many critters, a covered air conditioner is an awesome winter home.

Birds, mice, chipmunks and even rats frequently make homes inside covered air conditioners. Animals living in a covered air conditioning unit can cause several problems. Mice can chew through wires, insulation and other connections, 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 block airflow and ventilation, reducing the efficiency of the appliance and potentially causing it to overheat. Additionally, animal excrement can result in unsanitary conditions and foul odors.

Leaving your air conditioner uncovered helps dissuade 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 when winter is over.

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 limits airflow through the unit. Proper airflow is vital for the AC system because it helps with heat exchange and permits the unit to cool effectively. When airflow is severely limited, the system has to work harder to maintain the desired temperature, causing additional energy consumption and strain on the components.

In addition, if you run your AC without realizing 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, causing its failure or damage.  That’s why it is necessary to ensure the outdoor unit is always cleared of any obstructions and is not covered to maintain maximum 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 air conditioning unit than to cover your outdoor AC unit.

There are numerous key maintenance projects you should prioritize to ensure optimal 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, small branches and dirt to maintain proper airflow. Second, check and clean the coils, fins and filters to make sure they are free from dirt and dust buildup that would hinder efficient heat exchange or airflow.

Routine air conditioning maintenance not only boosts efficiency, but it also helps extend the unit’s life span, reduces energy consumption and avoids costly repairs. Rather than using a cover, committing time and effort into routine air conditioning maintenance is a proactive plan of action that can greatly benefit your entire HVAC system in the long run.