As the scorching summer heat starts to fade and the cooler temperatures of fall starts to settle in, residents of Croydon start preparing their homes and yards for the wintertime. For many, that leads to the question of whether they ought to cover their exterior air conditioner for the winter.

While it may seem like a great idea, in reality there are many reasons why you shouldn’t cover your AC unit in the winter. On top of not being necessary, covering your outdoor air conditioning equipment can sometimes cause problems.

Here, the professionals at Indoor Comfort Systems HVAC 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. Snow won’t Hurt Your AC

Outdoor AC units are designed to withstand harsh weather conditions like snow in the winter. These units 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 crafted to protect the internal components from moisture and debris.

2. Covering Your Air Conditioner Can Cause Mold

One of the reasons you should not cover your air conditioner in the wintertime is because doing so can trap moisture—which is the opposite of what you want in your outdoor unit. That’s because allowing moisture to collect inside the unit generates the perfect conditions for mold and mildew to thrive.

Mold and mildew not only have an unpleasant smell, but they can also pose health risks, especially for household residents with respiratory issues or allergies. Also, the excess 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. A Covered Air Conditioner Can Host Animals

Human beings aren’t the only ones who get ready for winter. Animals that live around your home are also hunting for a warm, cozy place to crash for the wintry months. For many creatures, a covered air conditioner is an ideal winter dwelling.

Birds, mice, chipmunks and even rats commonly make winter dens inside covered air conditioners. Animals residing in a covered air conditioner can cause several problems. Rats 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 nest can impair airflow and ventilation, lowering 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 deter animals, 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 pick up and things to repair once the snow melts.

4. Covering Your Air Conditioner Restricts Airflow

Another reason you shouldn’t cover your air conditioning equipment in the winter is because a cover limits airflow through the unit. Adequate airflow is vital for the AC system because it helps with heat exchange and permits the unit to cool effectively. When airflow is severely limited, the system has to work harder to reach the desired temperature, causing greater energy consumption and strain on the components.

In addition, if you run your AC 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 lack of correct airflow could cause the compressor to overheat, resulting in its failure or damage.  That’s why it is vital to ensure the outdoor unit has no barriers 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 several key maintenance tasks you should prioritize to ensure the best possible function and longevity of your AC unit. First, it’s a good idea to look at your outdoor AC unit regularly and pull out any debris such as leaves, sticks and dirt to maintain proper airflow. Second, examine 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.

Regular 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, investing time and effort into routine air conditioning maintenance is a proactive plan of action that can significantly benefit your entire HVAC system in the long run.