4 Best Air Conditioner Covers For Winter

Many homeowners cover their air conditioner in the winter for a number of different reasons. But which air conditioner covers are the best? And what are their benefits? We have researched some of the top reviewed air conditioner covers on the market, and in this post, we will answer these questions for you.

Here are the best air conditioner covers for the winter:

  1. CoverMates Air Conditioner Cover
  2. Classic Accessories Ravenna Square
  3. Sturdy Covers AC Defender
  4. Patio Watcher Square Air Conditioner Cover 

If you live in an area where the winters are extreme, having a cover on your air conditioner can prevent it from freezing. It can also prevent dead bugs and pests from crawling inside the air conditioner during the warmer months. Continue reading to learn more about features that come with these air conditioner covers and other ways to keep your air conditioner unit protected.

Residential air conditioning unit wrapped with protective cover in blizzard, 4 Best Air Conditioner Covers For Winter

Best Air Conditioner Covers For Winter

1. CoverMates Air Conditioner Cover

Here is a cover that is both strong and lightweight enough to apply easily. This cover is made from 12-gauge vinyl and includes a second layer of woven polyester to help prevent pests from getting into the unit.

It's resistant to animal scratches and penetration by small rodents and bugs. If you need a thick vinyl that can resist punctures from small branches and nearby wildlife, here is one to consider.

The cover fits snugly on most standard-size air conditioners and has double-stitched seams to prevent dirt and dust from entering the corners of the air conditioner. It's available in various sizes and can also be used to cover grills, patio furniture, and other large appliances.

Find this cover on Amazon.

2. Classic Accessories Ravenna Square

This lightweight cover can be used on outdoor air conditioners as well as outdoor patio furniture. It's made from a special patented polyester weave and is both UV and water-resistant. It has a double-stitched backing with reinforced handles to make it easier to apply and move.

It also includes double-stitched seams for additional durability, and it has mesh vents for increased breathability. This cover prevents the growth of mildew and mold by reducing the amount of condensation on the surface of the air conditioner.

It also includes an adjustable belted hem to keep the air conditioner safe from strong winds. It's available in various colors, including dark taupe, mushroom, and coffee.

Learn more about this cover on Amazon.

3. Sturdy Covers AC Defender

The AC Defender is designed to keep moisture out of the air conditioner and to protect the electrical components within it. It is covered in a strong PVC material and can help to prevent condensation from developing on the top and sides of the air conditioner.

Condensation is one of the main reasons why rust will develop on the air conditioner coils, which can lead to them freezing. This cover can be used all year round, and it's also helpful for preventing yard trimmings, sticks, bugs, and leaves from falling into the air conditioner during the warmer months of the year.

The cover comes in three sizes and will fit on most standard outdoor air conditioners. If you're worried about mold or mildew, this is the cover to choose.

Read more about this air conditioner cover on Amazon.

4. Patio Watcher Square Air Conditioner Cover 

If you're looking for an air conditioner cover that is both durable and affordable, this cover is the way to go. It's made from polyester and can help to protect your unit from the sun and harsh winds. It's also helpful for preventing condensation from snow and rainwater.

This affordable air conditioner cover comes with two handles that make it easy to attach and remove. The waterproof cover is easy to clean and prevents dirt and debris from accumulating around the top and sides of the air conditioning unit.

Read more about it on Amazon.

Is it good to cover your air conditioner in the winter?

There are scenarios where it's best to cover your air conditioner in the winter. Note that air conditioners are, in fact, built to withstand temperatures and rain and snow. However, they are not built to keep leaves, wildlife, and other debris out.

This being said, it's best to cover the air conditioning system in the fall when insects, leaves, and other debris can get inside the unit.

This can also cause the formulation of moisture which can lead to rust and corrosion. If you do cover the unit and are worried about moisture, only cover the top of the unit—leave the sides uncovered.

How do I keep my outside AC unit from freezing?

There are a few ways to keep the outside air conditioner from freezing. Here are the most common methods to prevent this.

Have a technician check for Freon leaks

If the unit has low refrigerant levels, it's easy for ice to form on the coils. This usually happens during the winter when outside temperatures reach below 30 degrees Fahrenheit.

If there is a leak in the refrigerant, it's best to have it repaired, as it can lead to other significant issues with the air conditioner.

Check the air filter frequently

Adequate airflow is essential to keeping an air conditioner running properly.

If the unit gets clogged or the air filter is dirty, this will restrict airflow in the air duct, resulting in frozen evaporator coils and other functional issues. It's best to change the air filter every two months at least, and more often if you live in an urban area.

Check the condensate line

Air conditioners operate by absorbing and transferring heat. During this process, moisture that was condensed in the air conditioner escapes through the condenser line and onto the drain pan. However, the condensing line can become clogged over time.

If the line begins to overflow, the excess moisture makes its way back to the evaporator coil, causing it to freeze. If you suspect that your condenser line is clogged, clean it with a mixture of diluted vinegar or diluted bleach.

Keep your vent ducts clean

Similar to dirty air filters, clogged or dusty vents can also obstruct the airflow within your HVAC system.

You'll also want to ensure that you don't close more than two or three supply vents at a time, as this can also restrict airflow. When airflow is restricted, the air conditioner system can freeze up during the winter.

How do I winterize my air conditioner?

It's best to winterize your air conditioner at the start of the fall season. Here are the steps to winterize your air conditioner:

1. Shut off the HVAC system

Before touching anything, make sure that the HVAC system is completely shut off. This includes turning off the power to the unit and switching off the circuit breakers just to be on the safe side.

2. Clean the air conditioner cover

If your cover is kept outside or in an outdoor shed, it's likely dirty. Take a damp cloth and wipe away any dust, dirt, bird droppings, and spider webs from the cover.

Ensure that it is free of leaves and other debris before letting it air-dry for about 20 to 30 minutes. Once the cover is dry, place it on the air conditioning unit.

3. Cover any exposed pipes

If you have exposed pipes around your air conditioning unit, you can use foam pipe covers to protect them from extreme temperatures during the winter. Simply slip the covers onto the pipes and apply duct tape if needed.

What happens if you run your AC with the cover on?

If you run an air conditioner with the cover still on, it can affect the airflow of the unit. This, in turn, can cause the accumulation of condensation and heat within the unit, which can damage the internal components of the air conditioner.

Simply put, if the cover is left on, the heat will have nowhere to go, and the unit may eventually shut down due to overheating.

Can you pour hot water on a frozen AC unit?

While it's not typically recommended to pour hot water onto a frozen AC unit, you can pour lukewarm water on the unit to thaw out frozen evaporator coils.

Note that pouring hot water on the unit during the middle of the winter can cause it to crack. You can also thaw out the coils by applying a blow dryer.

Wrapping Things Up


We hope this post has helped illustrate the benefits of air conditioner covers and how to apply them.

Remember, if you're worried about your unit freezing from cold temperatures, be sure to take preventive measures during the fall season, including checking for leaks and removing any debris from around the unit.

Before you go, be sure to check out these posts:

Do Electric Furnaces Need Yearly Maintenance?

How To Move A Thermostat To Another Room

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