As the sweltering summer heat starts to fade and the cooler temperatures of fall starts to settle in, residents of Ames 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 outside air conditioning unit for the winter.

While it may seem like a great 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 needed, covering your outdoor air conditioning equipment can actually cause problems.

Here, the professionals at Haselhoff Air Solutions 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 built to withstand harsh weather conditions like snow in the wintertime. These systems are built with solid 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 designed to protect the internal elements from moisture and debris.

2. Covering AC Systems can Encourage Mold

One of the reasons you should not cover your AC unit 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 generates the perfect conditions for mold and mildew to flourish.

Mold and mildew not only have an undesirable aroma, but they can also pose health risks, especially for household residents with respiratory issues or allergies. Plus, the trapped 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

People 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 cold months. For many animals, a covered air conditioner is an awesome winter refuge.

Birds, mice, chipmunks and even rats commonly make nests inside covered air conditioners. Animals living in a covered AC unit can cause many problems. Rodents can chew through wires, insulation and other components, causing damage that may require expensive repairs. Debris animals bring into the AC to make themselves a warm and comfortable bed can impair airflow and ventilation, limiting the efficiency of the unit and potentially causing it to overheat. In addition, animal waste can result in unsanitary conditions and foul odors.

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

4. An AC Cover Restricts Airflow

Another reason you shouldn't cover your AC unit in the winter is because a cover restricts airflow through the unit. Suitable airflow is vital for the AC system because it facilitates heat exchange and allows the unit to cool properly. When airflow is restricted, the system has to work harder to reach the desired temperature, leading to greater 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 lack of appropriate airflow could cause the compressor to overheat, leading to its failure or damage.  That’s why it is vital to ensure the outdoor unit is free from obstructions and is not covered to maintain maximum airflow.

5. AC Maintenance Offers More Benefits 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 outdoor AC unit.

There are numerous key maintenance projects you should prioritize to ensure the best possible performance and longevity of your AC unit. First, it’s wise to inspect your outdoor AC unit regularly and remove any debris such as leaves, sticks and dirt to maintain 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 prevent successful heat exchange or airflow.

Scheduled 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, 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.