Is your AC blowing cold air but your house is still hot? Learn the common causes, what to do, and when to call in a pro.
Should You Cover Your Air Conditioner in the Winter? Everything to Know
Dress your AC for the season
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Covering your air conditioning unit in winter with a solid, non-breathable cover causes moisture buildup and rust and attracts critters that damage your system.
Breathable AC covers cost $15 to $40 for fall debris protection, while professional HVAC maintenance costs $450 to $1,000 for an annual tuneup.
Your outdoor AC condenser withstands winter weather naturally, so you only need a partial cover in fall to block leaves and twigs from entering.
Hiring a local air conditioner installing professional keeps your system running smoothly with filter replacement, coil cleaning, and drain line checks year-round.
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As the cooler months arrive, you may wonder if you should cover your air conditioner in the winter. However, completely covering your AC unit can cause moisture and rust and attract unwanted critters. Instead, use a partial, breathable cover during the fall to prevent debris from entering your unit, and leave the AC uncovered in the winter. Here’s everything you need to know about covering your AC unit in the winter.
Should I Cover My AC in the Winter?
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You should not cover your AC unit in the winter because it can lead to moisture buildup and rust and attract unwanted critters—all of which could damage your unit. The condenser on your outdoor AC is made of a durable metal that is designed to withstand winter weather, including snow, hail, sleet, and rain. If you have large icicles that could fall into your unit, remove the icicles periodically or use a sturdy top cover or piece of wood to prevent icicles from damaging your unit.
If you have trees and other shrubbery around your AC unit, you can use a cover in the fall to protect it from sticks, leaves, and other debris. Choose a breathable cover, which costs $15 to $40 from a hardware or home improvement store. Covers that don’t allow moisture to dissipate can cause condensation on the interior of an AC unit, leading to rust and corrosion.
AC Units Need Covers When:
There are leaves and other debris falling on the housing or inside it.
There is a buildup of snow or ice that can freeze inside the housing.
Snow and ice are falling from the roofline and could fall into the AC unit from above.
AC Units Should Remain Uncovered When:
There is no danger of snow or ice buildup.
It is protected and away from trees that can shed leaves and twigs onto the housing.
The unit is wet from being cleaned or from the weather.
Pros and Cons of AC Covers
Take a look at the good and the bad of using AC covers.
| Pros | Cons |
|---|---|
| Protects unit from leaves, berries, twigs, and other debris during the fall | Holds moisture, which can freeze and damage interior parts |
| Protects unit from falling icicles, but only a hard top cover should be used | May attract unwanted critters |
| Can lead to rust, corrosion, and damage |
Maintaining Your AC Unit and HVAC System
Angi Tip
Get your HVAC system serviced and inspected at least once per year. For extra peace of mind, call in a pro twice annually: once before the hottest months of the year and again before the coldest time of year.
You may not need to add a cover to your AC unit, but maintenance is a must. Year-round maintenance can help lower energy bills, improve your home’s air quality, and increase the life span of your HVAC system. Depending on your skills and experience, you can perform some HVAC maintenance, including:
Checking and replacing filters
Checking the drain line for clogs
But if you're unsure about how to complete these tasks, hire a local HVAC expert to help. HVAC maintenance costs between $450 and $1,000 for an AC tuneup.
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Heating and air conditioning services reviews from real Angi homeowners in Columbus, OH
4.5★ avg. • 115 total reviews
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Corey Carr was great. I had damage from a recent storm and needed to have my mast and other components replaced. The project entailed coordinating with AEP, and Corey helped make a stressful situation a lot less stressful. I really appreciated his dedication to service and the job very well done.
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