As the sweltering summer heat starts to fade and the refreshingly cool weather of fall starts to settle in, residents of Holbrook start preparing their homes and yards for the the upcoming cold weather. 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 smart idea, the reality is there are many reasons why you shouldn’t cover your AC unit in the winter. On top of not being needed, covering your outdoor air conditioning equipment can even cause problems.

Here, the experts at Fal-Ken Heating & Cooling Corporation 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

Outside AC units are supposed to withstand harsh weather conditions like snow in the winter. 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 engineered to resist corrosion, and the housing is designed to protect the internal elements from moisture and debris.

2. Covering Your Air Conditioner Can Cause Mold

One of the reasons you should avoid covering your air conditioner 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 trapping moisture inside the unit creates the perfect conditions for mold and mildew to flourish.

Mold and mildew not only have an unpleasant odor, but they can also create health risks, especially for household residents with respiratory issues or allergies. Additionally, the unwanted moisture can corrode the internal components of the AC unit.

As an alternative to 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. Your Covered Air Conditioning Unit Can Attract Animals

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

Birds, mice, chipmunks and even rats often make homes inside covered air conditioners. Animals dwelling in a covered air conditioning unit can cause numerous problems. Rats can chew through wires, insulation and other parts, causing damage that may require pricey 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 unit and potentially causing it to overheat. Additionally, animal droppings can result in unsanitary conditions and bad odors.

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

4. An AC Cover Restricts Airflow

Another reason it’s better that you don’t cover your air conditioner in the winter is because a cover limits airflow through the unit. Proper airflow is crucial for the AC system because it helps with heat exchange and permits the unit to cool efficiently. When airflow is constrained, the system has to work harder to maintain the desired temperature, causing greater energy consumption and strain on the components.

In addition, if you use your air conditioner without noticing that the exterior unit is covered or because you simply forgot, it could result in a range of problems. One issue is that the shortage of appropriate airflow could cause the compressor to overheat, leading to its failure or damage.  That’s why it is essential to ensure the outdoor unit has no obstructions and is not covered to maintain the best possible 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 conditioning unit than to cover your outside AC unit.

There are several key maintenance tasks you should prioritize to ensure optimal function and longevity of your AC unit. First, it’s a good idea to inspect your outdoor AC unit regularly and pull out any debris such as leaves, twigs and dirt to allow proper airflow. Second, check and clean the coils, fins and filters to make sure there isn’t any dirt and dust buildup that would impede effective heat exchange or airflow.

Routine air conditioning maintenance not only enhances efficiency, but it also helps extend the unit’s life span, lowers 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 greatly benefit your entire HVAC system in the long run.