As the sweltering summer heat starts to fade and the relief of fall starts to settle in, residents of Northglenn start preparing their homes and yards for the winter. For many, that leads to the question of whether they need to cover their outside air conditioning unit for the winter.

While it may seem like a smart idea, the reality is there are multiple reasons why you shouldn’t cover your AC unit in the winter. Along with not being necessary, covering your outdoor air conditioning equipment can even cause problems.

Here, the specialists at Northglenn Heating & Air Conditioning 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 Unit Isn’t Damaged by Snow

Outdoor AC units are built to withstand harsh weather conditions like snow in the winter season. These units are built with durable 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 manufactured to protect the internal elements from moisture and debris.

2. Covering Your Air Conditioner Can Cause Mold

One of the reasons you shouldn’t cover 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 allowing moisture to collect inside the unit generates the perfect conditions for mold and mildew to thrive.

Mold and mildew not only have a bad odor, 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 cleared of debris, allowing for efficient airflow and preventing moisture buildup.

3. Your Covered Air Conditioning Unit Can Attract Animals

Human beings 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 crash for the winter months. For many critters, a covered air conditioner is the perfect winter home.

Birds, mice, chipmunks and even rats commonly make homes inside covered air conditioners. Animals dwelling in a covered air conditioner can cause several problems. Rats can chew through wires, insulation and other connections, causing damage that may require pricey repairs. Debris animals bring into the AC to construct a warm and comfortable place to get out of the cold weather can impair airflow and ventilation, limiting the efficiency of the AC and potentially causing it to overheat. Additionally, animal droppings can result in unsanitary conditions and bad odors.

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

4. Covering Your Air Conditioner Restricts Airflow

Another reason not to 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 assists heat exchange and enables the unit to cool properly. When airflow is restricted, the system has to work harder to maintain the desired temperature, causing additional energy consumption and strain on the components.

In addition, if you use your air conditioner without realizing 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, resulting in its failure or damage.  That’s why it is necessary to ensure the outdoor unit has no 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 lots more effective to do a little maintenance for your cooling system than to cover your exterior AC unit.

There are numerous key maintenance tasks you should prioritize to ensure the best possible operation and longevity of your AC unit. First, it’s smart to look at your outdoor AC unit regularly and pull out any debris such as leaves, small branches and dirt to allow proper airflow. Second, inspect and clean the coils, fins and filters to make sure you don’t see any dirt and dust buildup that would impede effective heat exchange or airflow.

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