To cover the outdoor unit or not, that’s a question that doesn’t seem to have a straight answer. On one hand, covering the outdoor unit makes sense to protect it from snow and debris. But on the other hand, it might cause more damage by allowing a pest infestation or trapping moisture. You may end up needing to call an AC mechanic in Port St. Lucie FL during spring if you don’t already have maintenance scheduled.
Besides, an air conditioner is designed to resist the effects of extreme weather conditions. They can handle low temperatures, rain and snow quite well. But again, covering properly might be useful in certain conditions.
Reasons To Not Cover AC
- Moisture
Keeping moisture out is one of the reasons people cover the unit. Ironically, the cover (especially a plastic cover) might end up trapping the moisture inside. It’s because there’s no surefire way of keeping the moisture out. It could seep in through the wind or the humidity.
Moisture in the unit could freeze and damage the coils. It could allow mold and mildew to grow in the unit, hindering its functioning. The coils may rust and there may be corrosion in the interior unit.
That’s why it might be better to leave the unit uncovered if you live in a climate with high humidity and precipitation.
- Rodents
Another case of causing what you’re trying to prevent. Covering the unit might seem like a good way to block pests from entering the unit and making it their home. But the cover creates a cozy environment for them that’s too enticing for them. And small rodents can always find their way through the cover.
- Blocked Airflow
The air conditioner is built to allow airflow. Blocking it with a cover might allow mold to grow on the coils and decrease their efficiency. Moisture damage and corrosion are also possible.
When To Cover Condenser Unit
- Fall
Plants shed lots of leaves and seeds during the fall. A chunk of them can fall into the condenser unit. They can trap moisture and cause corrosion. They may also clog the unit’s built-in drainage system. Similarly, if you live in a dry climate and have issues with debris falling into the unit, then you could use a cover.
- Winter Storm
Although the unit is designed to handle winter conditions, a winter storm might be too much for it. So if your weather forecast is predicting a storm on the way, then you could cover the outdoor unit in advance. Once the storm passes, you can uncover it.
How to Cover AC Properly
- Never Use Plastic Covers
Plastic covers block the airflow completely. This traps the condensation inside the unit, causing corrosion and mold growth. They might also encourage critters and insects to nest inside.
- Use Breathable Material
Covers made of breathable materials allow air to flow and prevents moisture from getting trapped.
- Place Plywood On Top
A plywood board on top of the unit might be all that you need. It can prevent leaves, ice, debris and other stuff from getting into the unit and damaging the fan or other components.
- Install Shelter
A shelter, like a wood awning, can help protect the unit not just during the winter, but throughout the year. It can also protect the unit from direct sunlight during the summer. You can make this a DIY project if you’re handy with tools. Ensure that there’s enough clearance when building a shelter to maintain airflow. It can also help hide the unit and maintain the curb appeal.
Things To Consider When Getting New Covers
The cover material should be porous enough to allow airflow. It should be waterproof so that it doesn’t let moisture seep through. It should cover the upper or outer part completely but not touch the ground. Resistance to UV-rays is another quality to watch out for so that the cover doesn’t become brittle.
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