As the hot summer heat starts to fade and the refreshingly cool weather of fall starts to settle in, residents of Zelienople start preparing their homes and yards for the winter. For many, that leads to the question of whether they should cover their outdoor air conditioning unit for the winter.

While it may seem like a great idea, the truth is there are many reasons why you shouldn’t cover your AC unit in the winter. In addition to not being something you need to do, covering your outdoor air conditioning equipment can actually cause problems.

Here, the specialists at Knoechel 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

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

2. Covering Your Air Conditioner Can Cause Mold

One of the reasons you should not cover your AC unit 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 trapping moisture inside the unit produces the perfect conditions for mold and mildew to thrive.

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

Instead of 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

Human beings 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 hide out for the winter months. For many critters, a covered air conditioner is the perfect winter dwelling.

Birds, mice, chipmunks and even rats commonly make nests inside covered air conditioners. Animals dwelling in a covered air conditioning unit can cause many problems. Rats can chew through wires, insulation and other connections, causing damage that may require pricey repairs. Debris animals bring into the AC to make themselves a warm and comfortable home can obstruct airflow and ventilation, limiting the efficiency of the appliance and potentially causing it to overheat. Moreover, animal excrement can result in unsanitary conditions and bad 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 pick up and things to repair when winter is over.

4. Covering Your Air Conditioner Restricts Airflow

Another reason you shouldn’t cover your AC unit in the winter is because a cover blocks airflow through the unit. Adequate airflow is essential 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 achieve the desired temperature, causing increased energy consumption and strain on the components.

In addition, if you run your air conditioner without noticing that the outside 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 vital to ensure the outdoor unit is always cleared of any barriers and is not covered to maintain the best possible airflow.

5. AC Maintenance Works Better Than Covering Your Air Conditioner

The bottom line is, it’s a whole lot more effective to do a little maintenance for your air conditioning unit 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 a good idea to look at your outdoor AC unit regularly and clear any debris such as leaves, small branches and dirt to promote proper airflow. Second, inspect and clean the coils, fins and filters to make sure they are free from dirt and dust buildup that would prevent effective heat exchange or airflow.

Routine air conditioning maintenance not only improves efficiency, but it also helps extend the unit’s life span, lowers 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.