As the sweltering summer heat starts to fade and the refreshingly cool weather of fall starts to settle in, residents of Norco and St. Charles Parish start preparing their homes and yards for the the upcoming cold weather. For many, that leads to the question of whether they should cover their outdoor AC for the winter.

While it may seem like a great idea, the reality is 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 actually cause problems.

Here, the specialists at Mayeuxs AC & Heating 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 supposed to withstand harsh weather conditions like snow in the winter. These machines are built with solid materials and components that can handle the outdoor elements without damage. The coils and fins of the unit are engineered to resist corrosion, and the housing is designed 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 air conditioner in the wintertime is because doing so can trap moisture—which is not at all what you want in your outdoor unit. That’s because sealing moisture inside the unit creates the perfect conditions for mold and mildew to spread.

Mold and mildew not only have a bad odor, but they can also pose health risks, especially for people with respiratory issues or allergies. Additionally, the unwanted 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. A Covered Air Conditioner Can Host Animals

You and your family aren’t the only ones who make plans for winter. Animals that live around your home are also searching for a warm, cozy place to live for the wintry months. For many creatures, a covered air conditioner is the perfect winter home.

Birds, mice, chipmunks and even rats frequently make homes inside covered air conditioners. Animals dwelling in a covered air conditioner can cause numerous problems. Mice can chew through wires, insulation and other parts, causing damage that may require costly repairs. Debris animals bring into the AC to make themselves a warm and comfortable nest can block airflow and ventilation, reducing the efficiency of the AC and potentially causing it to overheat. Additionally, animal droppings can result in unsanitary conditions and potent odors.

Leaving your air conditioner uncovered helps dissuade wildlife, because an uncovered AC offers 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 in the spring.

4. A Winter Cover for AC Units Restricts Airflow

Another reason it’s better that you don’t cover your air conditioning equipment in the winter is because a cover restricts airflow through the unit. Adequate airflow is crucial for the AC system because it facilitates heat exchange and allows the unit to cool effectively. When airflow is constrained, the system has to work harder to reach the desired temperature, causing increased energy consumption and strain on the components.

In addition, if you use your AC without realizing 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 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 always cleared of any blockages and is not covered to maintain optimal airflow.

5. AC Maintenance Is More Effective Than Covering Your Air Conditioner

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

There are numerous key maintenance activities you should prioritize to ensure maximum function 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, twigs and dirt to promote proper airflow. Second, inspect and clean the coils, fins and filters to make sure there isn’t any dirt and dust buildup that would hinder successful heat exchange or airflow.

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