As the sweltering summer sunshine starts to fade and the relief of fall starts to settle in, residents of Hodgenville start preparing their homes and yards for the the upcoming cold weather. For many, that leads to the question of whether they ought to cover their outdoor air conditioning unit for the winter.

While it may seem like a good idea, in reality 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 sometimes cause problems.

Here, the specialists at Phelps Heating & Cooling, Inc. 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

Outdoor AC units are supposed to withstand harsh weather conditions like snow in the winter. These systems are built with durable materials and parts 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 manufactured to protect the internal elements from moisture and debris.

2. Covered AC Systems may Encourage Mold Growth

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

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

Rather than covering the unit, instead provide proper drainage and keep the area around the unit cleared of debris, allowing for efficient airflow and preventing moisture buildup.

3. Your Covered Air Conditioning Unit Can Attract Animals

Humans 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 creatures, a covered air conditioner is an ideal winter refuge.

Birds, mice, chipmunks and even rats frequently make winter dens inside covered air conditioners. Animals residing in a covered AC unit can cause many problems. Rats can chew through wires, insulation and other components, causing damage that may require expensive repairs. Debris animals bring into the AC to construct a warm and comfortable place to get out of the cold weather can impair airflow and ventilation, lowering the efficiency of the appliance and potentially causing it to overheat. Additionally, animal waste can result in unsanitary conditions and bad odors.

Leaving your air conditioner uncovered helps deter creatures, because an uncovered AC gives them less shelter from cold weather than a covered unit. That’s better for your AC—and leaves you with less mess to pick up and things to repair in the spring.

4. A Winter Cover for AC Units Restricts Airflow

Another reason not to cover your air conditioner in the winter is because a cover blocks airflow through the unit. Proper airflow is vital for the AC system because it helps with heat exchange and enables the unit to cool properly. When airflow is reduced, the system has to work harder to reach the desired temperature, resulting in greater energy consumption and strain on the components.

In addition, if you use your air conditioning 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 lack of proper airflow could cause the compressor to overheat, leading to its failure or damage.  That’s why it is necessary to ensure the outdoor unit is always cleared of any barriers 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 much more effective to do a little maintenance for your air conditioning unit than to cover your outside AC unit.

There are several key maintenance activities you should prioritize to ensure the best possible performance and longevity of your AC unit. First, it’s a good idea to check your outdoor AC unit regularly and remove any debris such as leaves, sticks 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.

Routine air conditioning maintenance not only enhances efficiency, but it also helps extend the unit’s life span, decreases 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 substantially benefit your entire HVAC system in the long run.