As the sweltering summer sun starts to fade and the cooler temperatures of fall starts to settle in, residents of Laurel 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, the truth is there are a number of 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 even cause problems.

Here, the professionals at H&C Heating and Cooling 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 systems are built with solid materials and hardware 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 components from moisture and debris.

2. Covered AC Systems may Encourage Mold Growth

One of the reasons you should avoid covering your AC unit in the winter is because doing so can trap moisture—which is not at all what you want in your outdoor unit. That’s because allowing moisture to collect 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 present health risks, especially for people with respiratory issues or allergies. Additionally, the excess 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 cleared of debris, allowing for efficient airflow and preventing moisture buildup.

3. Your Covered Air Conditioning Unit Can Host Animals

Human beings aren’t the only ones who prepare for winter. Animals that live around your home are also looking for a warm, cozy place to hide out for the wintry months. For many animals, a covered air conditioner is an awesome winter home.

Birds, mice, chipmunks and even rats frequently make homes inside covered air conditioners. Animals dwelling in a covered AC unit can cause numerous problems. Rodents can chew through wires, insulation and other parts, causing damage that may require expensive repairs. Debris animals bring into the AC to make themselves a warm and comfortable nest can block airflow and ventilation, limiting the efficiency of the appliance and potentially causing it to overheat. In addition, animal excrement can result in unsanitary conditions and bad odors.

Leaving your air conditioner uncovered helps dissuade creatures, because an uncovered AC provides less shelter from chilly temperatures than a covered unit. That’s better for your AC—and leaves you with less mess to pick up and things to repair once the snow melts.

4. An AC Cover Restricts Airflow

Another reason not to cover your air conditioning equipment 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 permits the unit to cool effectively. When airflow is reduced, the system has to work harder to maintain the desired temperature, causing increased energy consumption and strain on the components.

In addition, if you run your air conditioner without realizing 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, resulting in its failure or damage.  That’s why it is vital to ensure the outdoor unit has no blockages and is not covered to maintain optimal airflow.

5. AC Maintenance Works Better Than Covering Your Air Conditioner

The bottom line is, it’s much more effective to do a little maintenance for your air conditioner than to cover your exterior AC unit.

There are several key maintenance activities you should prioritize to ensure maximum function and longevity of your AC unit. First, it’s smart to examine your outdoor AC unit regularly and get rid of any debris such as leaves, sticks and dirt to maintain proper airflow. Second, examine and clean the coils, fins and filters to make sure they are free from dirt and dust buildup that would impede successful heat exchange or airflow.

Scheduled air conditioning maintenance not only boosts efficiency, but it also helps extend the unit’s life span, decreases energy consumption and prevents costly repairs. Rather than using a cover, putting time and effort into routine air conditioning maintenance is a proactive strategy that can greatly benefit your entire HVAC system in the long run.