As the scorching summer sunshine starts to fade and the refreshingly cool weather of fall starts to settle in, residents of Croydon 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 outdoor air conditioner for the winter.

While it may seem like a good idea, the reality is there are a number of reasons why you shouldn’t cover your AC unit in the winter. On top of not being something you need to do, covering your outdoor air conditioning equipment can actually cause problems.

Here, the specialists 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. Your AC Unit Isn’t Damaged by Snow

Outside AC units are designed to withstand harsh weather conditions like snow in the winter season. These units are built with solid materials and parts that can handle the outdoor elements without damage. The coils and fins of the unit are engineered to resist corrosion, and the housing is manufactured to protect the internal parts from moisture and debris.

2. Covering AC Systems can Encourage Mold

One of the reasons you should avoid covering your AC unit in the cold months 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 produces the perfect conditions for mold and mildew to spread.

Mold and mildew not only have an unpleasant aroma, but they can also create health risks, especially for household residents with respiratory issues or allergies. Also, the excess 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 clean of debris, allowing for efficient airflow and preventing moisture buildup.

3. Covered AC Systems Can Host Animals

People aren’t the only ones who make plans for winter. Animals that live around your home are also hunting for a warm, cozy place to crash for the wintry months. For many critters, a covered air conditioner is an ideal winter refuge.

Birds, mice, chipmunks and even rats frequently make winter dens inside covered air conditioners. Animals residing in a covered AC unit can cause several problems. Rats can chew through wires, insulation and other connections, causing damage that may require expensive repairs. Debris animals bring into the AC to construct a warm and comfortable nest can obstruct airflow and ventilation, lowering the efficiency of the AC and potentially causing it to overheat. Moreover, animal waste can result in unsanitary conditions and foul odors.

Leaving your air conditioner uncovered helps dissuade animals, because an uncovered AC gives them less shelter from chilly temperatures than a covered unit. That’s better for your cooling system—and leaves you with less mess to clean up and things to repair when winter is over.

4. An AC Cover Restricts Airflow

Another reason it’s better that you don’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 facilitates heat exchange and permits the unit to cool effectively. When airflow is constrained, the system has to work harder to achieve the desired temperature, leading to additional energy consumption and strain on the components.

In addition, if you run your air conditioning 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 shortage of correct 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 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 lots more effective to do a little maintenance for your air conditioner than to cover your outside AC unit.

There are a number of key maintenance activities you should prioritize to ensure maximum performance and longevity of your AC unit. First, it’s wise to check 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 hinder efficient heat exchange or airflow.

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