As the hot summer sun starts to fade and the cooler temperatures of fall starts to settle in, residents of Crown Point start preparing their homes and yards for the wintertime. For many, that leads to the question of whether they should cover their outdoor air conditioner for the winter.

While it may seem like a smart idea, the truth is there are many reasons why you shouldn’t cover your AC unit in the winter. In addition to not being something you need to do, covering your outdoor air conditioning equipment can actually cause problems.

Here, the specialists at Struven Heating & Cooling share five reasons why covering your air conditioner 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 built to withstand harsh weather conditions like snow in the winter. These systems are built with durable materials and hardware that can handle the outdoor elements without damage. The coils and fins of the unit are constructed to resist corrosion, and the housing is manufactured to protect the internal elements from moisture and debris.

2. Covering AC Systems can Encourage Mold

One of the reasons you should avoid covering 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 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 present health risks, especially for household residents with respiratory issues or allergies. Also, the trapped moisture can corrode the internal components of the AC unit.

As an alternative to covering the unit, instead provide 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 Host Animals

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

Birds, mice, chipmunks and even rats commonly make winter dens inside covered air conditioners. Animals living in a covered air conditioning unit can cause many problems. Rodents can chew through wires, insulation and other connections, causing damage that may require costly repairs. Debris animals bring into the AC to construct a warm and comfortable home can obstruct airflow and ventilation, limiting the efficiency of the AC and potentially causing it to overheat. In addition, animal excrement can result in unsanitary conditions and potent odors.

Leaving your air conditioner uncovered helps deter animals, because an uncovered AC provides 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 when winter is over.

4. An AC Cover Restricts Airflow

Another reason you shouldn’t cover your air conditioner in the winter is because a cover limits airflow through the unit. Adequate airflow is essential for the AC system because it assists heat exchange and enables the unit to cool efficiently. When airflow is severely limited, the system has to work harder to maintain the desired temperature, causing increased energy consumption and strain on the components.

In addition, if you turn on your air conditioning 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 shortage of appropriate airflow could cause the compressor to overheat, causing its failure or damage.  That’s why it is vital to ensure the outdoor unit is always cleared of any blockages 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 lot more effective to do a little maintenance for your air conditioner than to cover your outside AC unit.

There are numerous key maintenance tasks you should prioritize to ensure maximum function and longevity of your AC unit. First, it’s wise to examine your outdoor AC unit regularly and remove any debris such as leaves, sticks and dirt to maintain proper airflow. Second, check and clean the coils, fins and filters to make sure they are free from dirt and dust buildup that would impede successful heat exchange or airflow.

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