Rain Protection for AC Units – Here Are the Things to Keep in Mind

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When rainstorms approach, some homeowners rush to protect the AC condenser located outside the house. They cover the unit with tarp to safeguard against damage. However, is this really necessary?

This article will discuss the impact rain may have on outdoor AC components and ways to protect the element from harm.

Is covering the air conditioner recommended?

Contrary to popular belief, covering the external AC unit with a tarp or something similar isn’t effective. In fact, it can do more harm than good since covering the unit can trap in humidity and cause the condenser to corrode or attract mold. Therefore, refrain from using a tarp when it’s raining.

Homeowners who still want to shield their condenser from the rain with a tarp should use recommended solutions. The list includes custom covers with breathable materials that reduce the risk of moisture build-up and associated problems.

How to protect the external AC unit from extreme weather?

Rain generally won’t jeopardize the condenser or other air conditioner parts. However, hurricanes and storms are a different story. Here’s what you should do to shield the AC from harsh weather conditions:

Remove potential threats

Winds from storms may pick up outdoor objects, such as patio furniture and toys. If this happens, otherwise nondestructive things can strike the AC and cause considerable damage. To prevent this scenario, secure these kinds of objects and clear tree and lawn debris (e.g., branches) to keep them from slamming into the air conditioner.

Install hurricane straps

Hurricane straps are tie-down items that protect the condenser from fierce weather. With wind resistance of up to 150 mph, they stop hurricanes from yanking the unit off the base and tossing it around.

Mount surge protectors

Another common risk associated with storms is lightning strikes. They can wreak havoc on the AC electrical and cause a total breakdown. To avoid this issue, install a surge protector. They absorb and divert excess electricity from lightning strikes to protect the unit. As a result, they are an extremely wise investment, even though your building code may not require it.

Purchase a backup generator

The final tip doesn’t deal with protecting the AC, but it can be a life-saver. What we have in mind is investing in a backup generator.

In addition to high winds and flying debris, inclement weather can also lead to power outages. The problem may not be that severe during the winter, but summer humidity can turn your home into a sauna if the AC isn’t working. Even worse, you can’t leave due to the weather, meaning there’s no escaping the muggy indoor atmosphere. With a generator running during power outages, the AC will operate without a hitch and cool down the entire family until the skies are clear.

For more tips on protecting the AC during bad weather, contact a trusted HVAC company.


CMB Air is residential heating and cooling installation, service, and repair and company with 15+ years of experience serving Tampa and surrounding areas. If you need a new air conditioner, repair, maintenance or some other service, we can help! Call 813-461-6243 today!

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