As the sweltering summer sun starts to fade and the cooler temperatures of fall starts to settle in, residents of Sandpoint 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 outdoor air conditioning unit for the winter.

While it may seem like a good idea, in reality there are a number of reasons why you shouldn’t cover your AC unit in the winter. In addition to not being necessary, covering your outdoor air conditioning equipment can even cause problems.

Here, the specialists at Age Heating & Cooling share five reasons why covering your air conditioner 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 designed to withstand harsh weather conditions like snow in the winter season. These units are built with sturdy materials and hardware that can handle the outdoor elements without damage. The coils and fins of the unit are constructed 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 shouldn’t cover your AC unit in the winter 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 produces the perfect conditions for mold and mildew to spread.

Mold and mildew not only have a bad odor, but they can also create 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 clear 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 make plans for winter. Animals that live around your home are also hunting for a warm, cozy place to crash for the cold months. For many creatures, a covered air conditioner is an ideal winter home.

Birds, mice, chipmunks and even rats frequently make homes inside covered air conditioners. Animals living in a covered air conditioner can cause numerous problems. Mice 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 bed can obstruct airflow and ventilation, limiting the efficiency of the AC and potentially causing it to overheat. Additionally, animal excrement can result in unsanitary conditions and bad odors.

Leaving your air conditioner uncovered helps dissuade animals, because an uncovered AC provides less shelter from chilly temperatures than a covered unit. That’s better for your cooling system—and leaves you with less mess to throw away and things to repair when winter is over.

4. An AC Cover Restricts Airflow

Another reason it’s better that you don’t cover your AC unit in the winter is because a cover restricts airflow through the unit. Suitable airflow is crucial for the AC system because it assists heat exchange and permits the unit to cool effectively. When airflow is restricted, the system has to work harder to achieve the desired temperature, leading to greater energy consumption and strain on the components.

In addition, if you use your air conditioning without knowing that the outside unit is covered or because you simply forgot, it could result in a range of problems. One issue is that the shortage of correct airflow could cause the compressor to overheat, causing its failure or damage.  That’s why it is crucial to ensure the outdoor unit is free from 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 lots more effective to do a little maintenance for your air conditioner than to cover your exterior AC unit.

There are numerous key maintenance activities you should prioritize to ensure optimal operation and longevity of your AC unit. First, it’s wise to check your outdoor AC unit regularly and pull out 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 you don’t see any dirt and dust buildup that would hinder efficient heat exchange or airflow.

Regular air conditioning maintenance not only improves 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 approach that can substantially benefit your entire HVAC system in the long run.