As the sweltering summer heat starts to fade and the relief of fall starts to settle in, residents of Carson City start preparing their homes and yards for the winter. For many, that leads to the question of whether they ought to cover their outdoor AC for the winter.

While it may seem like a great idea, the reality is there are several reasons why you shouldn’t cover your AC unit in the winter. Along with not being needed, covering your outdoor air conditioning equipment can actually cause problems.

Here, the professionals at Anderson Heating & A/C 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

Outdoor AC units are built to withstand harsh weather conditions like snow in the winter. These units are built with sturdy 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 elements from moisture and debris.

2. Covering Your Air Conditioner Can Cause Mold

One of the reasons you shouldn’t cover your outdoor air conditioning equipment in the winter is because doing so can trap moisture—which is definitely not what you want in your outdoor unit. That’s because trapping moisture inside the unit creates the perfect conditions for mold and mildew to thrive.

Mold and mildew not only have an undesirable odor, but they can also pose health risks, especially for people with respiratory issues or allergies. Additionally, 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

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 crash for the winter months. For many creatures, a covered air conditioner is an ideal winter refuge.

Birds, mice, chipmunks and even rats commonly make winter dens inside covered air conditioners. Animals living in a covered AC unit can cause many problems. Mice 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 bed can impair airflow and ventilation, limiting the efficiency of the appliance and potentially causing it to overheat. Additionally, animal excrement can result in unsanitary conditions and potent odors.

Leaving your air conditioner uncovered helps dissuade wildlife, because an uncovered AC offers less shelter from cold weather than a covered unit. That’s better for your AC—and leaves you with less mess to throw away and things to repair once the snow melts.

4. A Winter Cover for AC Units Restricts Airflow

Another reason not to cover your air conditioning equipment in the winter is because a cover blocks airflow through the unit. Suitable airflow is essential for the AC system because it assists heat exchange and allows the unit to cool properly. 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 conditioner without noticing that the outdoor 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, 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 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 conditioner than to cover your outdoor AC unit.

There are numerous key maintenance projects you should prioritize to ensure maximum performance and longevity of your AC unit. First, it’s wise to examine your outdoor AC unit regularly and remove any debris such as leaves, sticks and dirt to promote proper airflow. Second, examine and clean the coils, fins and filters to make sure they are free from dirt and dust buildup that would hinder effective heat exchange or airflow.

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