As the sweltering summer sunshine starts to fade and the relief of fall starts to settle in, residents of Payson 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 outside air conditioner for the winter.
While it may seem like a great idea, the reality is there are a number of reasons why you shouldn’t cover your AC unit in the winter. Along with not being something you need to do, covering your outdoor air conditioning equipment can actually cause problems.
Here, the experts at North Mechanical Heating and 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. Your AC can Handle Snow
Outside AC units are supposed to withstand harsh weather conditions like snow in the wintertime. 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 specially developed to resist corrosion, and the housing is crafted 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 cold months is because doing so can trap moisture—which is definitely not what you want in your outdoor unit. That’s because trapping moisture inside the unit creates the perfect conditions for mold and mildew to spread.
Mold and mildew not only have a bad smell, but they can also create health risks, especially for household residents with respiratory issues or allergies. Plus, the unwanted 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. A Covered Air Conditioner Can Attract Animals
Humans aren’t the only ones who get ready for winter. Animals that live around your home are also looking for a warm, cozy place to hide out for the cold months. For many creatures, a covered air conditioner is an ideal winter refuge.
Birds, mice, chipmunks and even rats commonly make homes inside covered air conditioners. Animals dwelling in a covered AC unit can cause many problems. Mice 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 place to get out of the cold weather can impair airflow and ventilation, lowering the efficiency of the AC and potentially causing it to overheat. Moreover, animal droppings can result in unsanitary conditions and foul odors.
Leaving your air conditioner uncovered helps discourage creatures, 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 throw away and things to repair when winter is over.
4. Covering Your Air Conditioner Restricts Airflow
Another reason you shouldn'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 assists heat exchange and allows the unit to cool properly. When airflow is severely limited, the system has to work harder to reach the desired temperature, leading to greater energy consumption and strain on the components.
In addition, if you turn on 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, causing its failure or damage. That’s why it is necessary to ensure the outdoor unit has no blockages 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 a whole lot 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 the best possible performance and longevity of your AC unit. First, it’s a good idea to look at your outdoor AC unit regularly and remove any debris such as leaves, twigs and dirt to allow proper airflow. Second, inspect and clean the coils, fins and filters to make sure they are free from dirt and dust buildup that would hinder effective heat exchange or airflow.
Scheduled air conditioning maintenance not only improves efficiency, but it also helps extend the unit's life span, reduces energy consumption and prevents costly repairs. Rather than using a cover, putting 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.