15 Best Air Conditioner Covers For Winter (Outdoors, Indoors, Wall)

air conditioner cover reviews

As the Starks from the Game of Thrones series always say “Winter is coming”. They say it as a warning because in the winter things die. If you’re looking at your expensive $300+ air conditioner right now and wish it wouldn’t die during the fall and winter, you’re in luck. With the smart use of air conditioner cover during winter, you can easily protect your AC unit from the environmental elements.

The air conditioners provide a refreshing breeze in the summer but if we’re not careful about property storing or protecting them in the fall and winter season, even the most expensive AC units won’t last for 10+ years. For example, through the wall air conditioner covers for winter protect indoor AC units during the winter.

This is true for window and indoor air conditioners, and especially for outdoor AC units.  Having an outdoor central air conditioner cover is key to keep the elements away.

We’ve prepared the Top 5 best air conditioner covers lists with reviews so that you’ll be able to protect your AC. There are three sections (you can click on one to jump to that particular list):

(sometimes referred to as a 'central AC unit' as well)(inside the house we usually install the AC unit near the window)(through the wall air conditioner covers for winter)

Best Outdoor Air Conditioner Cover For Central AC Units

Outdoor AC unit covers protect your AC from:

  • Rain and damp environment. You don’t want to see fungi growing inside the AC.
  • Falling leaves that can jam your AC and rot in it.
  • Corrosion. Especially if the AC unit has scratches where the water can enter.
  • Cold temperature. Preventing cold air from leaking into your heated house in the winter will slash your heating bill.

The wall or window air conditioner cover serves to protect a window AC unit is much the same way as the outdoors.

Here is the Top5er list of the best 5 outdoor air conditioner covers for outside:

Outdoor AC Cover:Jeacent Central AC Cover for Outside UnitsCovermates Universal AC CoverRavenna Medium Outdoor AC CoverCOSFLY Big Outdoor AC Unit CoverVeranda Square Outdoor AC Cover
Photo:Jeacentmost versatile covermate air conditioner cover for multiple dimensionsravenna cover for outdoor air conditionercosfly big air conditioner cover for outsideVeranda Square outdoor Air Conditioner Cover
Dimensions:24'' x 24'' x 22''
24'' x 24'' x 30''
26'' x 26'' x 32''
34'' x 34'' x 30''
36'' x 36'' x 32''
24'' x 24'' x 22''
24'' x 24'' x 30''
26'' x 26'' x 32''
30'' x 30'' x 32''
+ 10 extra dimensions up to:
40'' x 40'' x 42''
+ 4 color options
32" x 32" x 30"
+ Round AC up to 34'' in diameter
32'' x 32'' x 36''
34'' x 34'' x 38''
36'' x 36'' x 39''
38'' x 38'' x 40''
34'' x 34'' x 30''
+ Round AC up to 34'' in diameter
Quality:4.9 out of 5 stars4.8 out of 5 stars4.8 out of 5 stars4.7 out of 5 stars4.7 out of 5 stars
Rating:4.8 out of 5 stars4.8 out of 5 stars4.8 out of 5 stars4.9 out of 5 stars4.6 out of 5 stars
Top5er status:Best SellerVersatile And EliteBest For Round ACBest BudgetStandard Option
Availability: Check Price Check Price Check Price Check Price Check Price

If you’re having a problem with the insulation of the air condition in the summer, you can check the Top5er’s review of 5 Best Window Seals For Portable AC.

For the outdoor air conditioners, there is just no avoiding weather. It doesn’t matter if you have 9000 BTUs or 25000 BTUs model, the central AC units are right there in the open and the protection with the outdoor AC cover especially during the fall and winter months is of utmost importance.

What to look for when looking for an outdoor cover? The most important factor is the dimensions of the air conditioner cover. A tight fit is the best because it’ll give the elements the minimal possible opening to reach the precious and protected AC unit.

Task for yourself: Measure your outdoor AC unit before buying the cover. When picking the cover, it doesn’t matter if you have a Carrier or Lennox AC. What matters the most is, well, the size or the dimensions of the AC.

The design of central AC cover is also important; you’ll be looking at the cover on your yard for most of the fall and all of the winter, you should at least like the look.

1. Jeacent Central Air Conditioner Covers for Outside Units [Best Seller]

The Jeacent cover is the go-to cover if you have an outdoor air conditioning unit in need of fall and winter protection. The cover is made out of 100% woven polyester fabric, a material that can prolong AC life due to:

  1. Water-resistance. Especially useful in heavy rain.
  2. Extreme temperature resistance. The 100% woven PE shows its value when the winter temperatures go subzero.
  3. UV-resistance. Minimizes the UVA and UVB sunlight effect.
  4. Minimizes electrical failures. Keeping the water, rotting leaves out of the air conditioner.

One key feature that gives the added value to the Jeacent central AC cover is its natural ventilation system. The cover has several mesh vents that allow airflow within the air conditioner under the cover. This prevents water from condensing inside the AC as well as prevents moisture which could prompt some bacteria or even fungi growth:

Jeacent central air conditioner cover with polyesther UV and Waterproof protection 24 inches times 24 inches
The Jeacent No. 1 outdoor air conditioner cover provides thorough protection and has a unique ventilation system to keep out moisture, bacteria, and fungi.

Despite being the No. 1 choice to protect your air conditioner, you really have to measure your AC unit before you buy the Jeacent outdoor cover. The Jeacent cover is available in 6 dimensions, for small AC units with 24 inches (Width) x 24 inches (Depth) x 22 inches (Height) to large 36” x 36” x 32”.

When you find the cover dimension that fits your outside air conditioner neatly, you have to install it over your AC before fall/winter. The Jeacent cover is very easy to set up; you get an elastic hem cord to secure the cover on the bottom, at the sides you should use Velcro closure and the outdoor cover comes with adjustable buckle straps which tighten the grip of the cover (for strong winds).

If you’re serious about protecting your outside air conditioner and need the best cover, you can order it here:

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2. Premium Covermates Outdoor Air Conditioner Cover [Versatile And Elite]

The Covermates covers have always been known as a luxury type of outdoor covers. In short, it is the most versatile and elite central AC cover you can buy, and it is the only one that satisfied the exquisite taste. Honestly, the high-quality cover like this makes sense only if you have a $500+ outdoor air conditioner.

This elite outdoor cover is not just more thing to keep on your yard that your neighbors will be envious of. The variety of dimensions, and yes even different colors of 300D stock-dyed polyester, can’t be matched in the world of outdoor or any kind of air conditioner covers.

The thick 300D polyester (you can read more about the high-quality 300D polyester at Oxford Fabrics) comes in 4 distinct colors; namely, Green Vinyl, Khaki, Charcoal, and, if you want to be even more lavish, the ultimate 600D Ripstop Black.

elite covermates outdoor AC unit cover for expensive air conditioners
The Elite Covermates cover in Khaki 300D polyester color. Most appropriate for expensive outdoor AC units.

On the photo, you can see several features of the Covermates outdoor air conditioner cover that are vital to prolonging the life span of your AC unit. Those include the water-resistant polyester and the covered mesh vents that enable air circulation within the air conditioner under the cover which prevents moisture and bacteria, fungi build up during the fall.

With the 14 available dimensions, you’ll be able to fit and protect the smallest outdoor AC unit as well as the biggest 25,000 BTUs one. This also makes the Covermates most versatile outdoor cover available and it will fit pretty much any Lennox or Carrier air conditioner. You can pick your dimension here and follow the instructions on how to use the elastic hem, buckle straps and snap closure to put the cover over your air conditioner in the yard:

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3. Ravenna Square And Round Cover For Central Air Conditioner

Ravenna is one of the best air conditioner covers IF you have a 32″ x 32″ x 30″ (Width x Depth x Height). The key is in the material that is used – the durable woven polyester – which is what most of the patio protecting covers are also made out of.

Here they’ve added the UV-stabilized coating and a water-resistant laminated backing in order to create a material that protects the air condition in your garden or yard best.

As you can see, it would be nice to have a bit more dimensions of the Ravenna square air conditioner cover. The 32-inch x 32-inch x 30-inch can cover a big percentage of outside AC units in the US but not all. If you check out #1 and #2 pick, you’ll find much more available cover dimensions.

However, what makes the Ravenna cover unique is that you can buy a round outdoor air conditioner cover. That’s right, even if you have a round central AC unit in your backyard, you can still protect it during the winter months using one of these:

ravenna round cover for outdoor air conditioner
Ravenna offers a way how to protect round outdoor AC units during the winter months.

In order to check if the Ravenna round cover fits the AC outside your house, you have to go measure it. The Ravenna cover will fit perfectly if the diameter of the unit is 34 inches.

If you have a round AC, you should take a meter and measure the diameter (the straight distance from one end to the other end that goes through the center of the top of the unit). If it’s between 32 inches and 36 inches, you can go right ahead and buy the Ravenna cover here:

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4. COSFLY Big And Best Budget Air Condition Cover [And Stylish!]

COSFLY is the best budget choice as the Lennox air conditioner cover or the bigger Carrier air conditioner cover. The reason being that both Lennox and Carrier are known to have bigger models of outdoor AC units.

Being the best budget cover, you would think that COSFLY will cut corners, especially on the materials. Nothing can be further from the truth. The COSFLY cover for outside AC units is made out of high-quality 600D polyester that provides both water and UV protection. If you set the air conditioner cover correctly in your backyard, even the snow won’t be able to touch your AC:

garden scene with cosfly ac cover over air conditioner
Best Budget COSFLY outdoors cover with surprisingly high-quality 600D polyester and terrific snow and water protection.

Unfortunately, the COSFLY is only available for larger central air conditioners. The minimal dimensions of the cover are 32” x 32” x 36” and the maximum dimensions are 38” x 38” x 40”.

The cover itself is as solid (if not even better) than other outdoor covers on the Top5er list but none has as an affordable price as the COSFLY:

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5. Veranda Square Outdoor Lennox Air Conditioner Cover

Veranda cover is in many ways similar to Top5er’s #3 pick; it has only one available dimension but it also has an option for a round cover if you have a round-shaped AC unit.

The square dimensions are the 34-inch x 34-inch x 30 inch which, incidentally, is one of the dimensions Lennox frequently uses when making air conditioners. So it comes naturally that the Veranda can be a cover of choice for Lennox owners.

best lennox air conditioner cover for winter
Many Lennox AC units have the 34” x 34” x 30 dimensions. The Veranda cover will fit them nicely.

The Veranda also comes with all the necessary accessories to install it over a Lennox AC with ease. These include the elastic hem for the bottom part of the air conditioner and closure buckle that keeps everything in place even in the case of strong winds.

Moreover, the Veranda cover is quite reasonably priced with a cost of less than $30:

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Best Indoor Air Conditioner Cover For AC Units Inside The House

Indoor air conditioner covers differ from outdoor AC units covers in three noticeable areas:

  1. The dimensions of indoor AC and covers are smaller. Average dimensions are 25-inch width x 17-inch depth x 2.5-inch depth.
  2. They are designed to protect the air conditioner inside the house against dust build-up, keeps the noise down and helps make the indoor AC more energy efficient. They don’t have to protect the unit against the environmental elements; your house already does that.
  3. It can be used year-round and you can use the cover even when the air conditioner is turned on. You can just cover the AC during the winter and save yourself wondering how you’re going to store it and re-install it every season.

Especially dust build-up is problematic and can shorten the lifespan of even the best indoor air conditioners. The best fabric that prevents dust particles to enter the air conditioner inside the house is quilted cotton.

The indoor AC units are less exposed to the elements. However, inside the house, there are several dangers that inside AC faces such as mites, fluid spills, bacteria, allergens, pet dander and so on. Having allergen bacteria-infected AC can make nighttime breathing, asthma, and allergies a lot worse.

Note: When denoting the dimensions of AC covers, we follow the Width x Depth x Height measurements. Having a cover that fits your air conditioner well is pretty much the only important thing you have to worry about (and measuring the AC before buying the cover is always advised).

The best indoor air conditioner covers will be at least partly made out of quilted cotton; the No. 2 on Top5er list even has a whole layer of 100% quilted cotton to catch all the dust particles that want to enter and jam your AC.

Again, the important thing when picking an indoor AC cover is the dimensions that should fit your indoor AC unit as close as possible. You can get many different dimensions of inside covers that can fit a 3000 BTU AC up to 15000 BTU unit. They also cover all kinds of indoor air conditioner brands such as Honeywell, Lennox, and Carrier.

Indoor AC Cover:Jeacent Indoor Double Insulation AC CoverGerrard Larriett Premium AC Window CoverQUALITYDEPOT Indoor Poly/Cotton AC CoverAlritz AC Cover For Inside The HouseSturdy Covers Big Indoor AC Cover
Photo:inside ac unit cover for indoorspremium quilted indoor air conditioner cover with aromatherapy propertiesqualitydepo inside air conditioner unit coverAlritz air conditioner cover for inside the housesturdy indoors AC unit cover for winter
Dimensions:16'' x 13'' x 2.5''
21'' x 13'' x 2.5''
25'' x 16'' x 2.5''
28'' x 20'' x 2.5''
24'' x 15'' x 4''
28'' x 20'' x 4''
17'' x 13'' x 2.5''
21'' x 14'' x 2.5''
25'' x 17'' x 2.5''
17'' x 13'' x 2.5''21'' x 14'' x 4''
25'' x 17'' x 4''
28'' x 20'' x 4''
Quality:4.7 out of 5 stars5 out of 5 stars4.2 out of 5 stars4.3 out of 5 stars4.1 out of 5 stars
Rating:4.6 out of 5 stars4.7 out of 5 stars4.6 out of 5 stars4.2 out of 5 stars4.1 out of 5 stars
Top5er status:Best SellerPremium CoverBest BudgetOnly For Small Indoor ACFor Big Indoor AC
Availability: Check Price
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1. Jeacent Indoor Air Conditioner Cover With Double Insulation [Best Seller]

Jeacent indoor cover so popular because its simple to install, provides double insulation (including quilted cotton layer) and looks as neutral as possible when covering the air conditioner inside your house.

The double insulation consists of two materials with two distinct functions:

  1. Polyester layer that prevents the indoor air conditioner to bring in the cold air during the fall/winter season (this is the inside layer facing the air conditioner).
  2. Quilted cotton layer that prevents dust from entering the insides of the air conditioner (this is the outside layer facing the room – and it looks quite neutral).
jeacent indoor air conditioner cover with two layers to keep out the dust particles and cold air
Jeacent is the No. 1 indoor AC cover because it’s simple, neutral and provides double insulation against cold air and against dust build-it.

The installation of indoor air conditioner cover is even easier than with outdoor cover. You simply flip it over the air conditioner inside your house and the elastic around the edges will tighten the fit and keep the cover from falling off.

The Jeacent is available in 4 different dimensions. The smallest one for 3000 – 5000 BTU air conditioners is 16 inches wide, 13 inches deep and it has a 2.5-inch height. The biggest one that fits the 12000 – 15000 BTU units is 28” x 20” x 2.5”. You can check them all out and pick the one which fits your indoor air conditioner best here:

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2. Gerrard Larriett Quilted Indoor Air Conditioner Covers for Window Units [Premium Choice]

The air conditioner cover inside your house will affect your internal design. Luckily the Gerrard Larriett, a brand who knows how important the internal design is, has come up with their over indoor AC covers and they are lavish, to say the least.

Gerrard Larriett has always been a luxury brand with a great sense of style. They’ve created a double insulating cover with 3 layers, each serving its own purpose when it comes to protecting the indoor air conditioner:

triple layer of indoor AC unit cover in order to insulate the air conditioner with style

The triple layer of 100% quilted cotton, batting, and liner works synergistically to prevent the cold air from entering our house with the air conditioner hose. It proves the air conditioner itself with a block against the dust particles that might settle in the AC unit if it weren’t for the quilted cotton barrier.

The best thing about the Gerrard Larriett is that it offers you a variety of colors and themes like Frozen or Mickey Mouse you can choose from. You have everything from stylish Ivory tones to children themes to even an American flag cover:

american flag indoor air conditioner cover
Gerrard Larriett offers premium covers with different themes and stylish colors. Theme: the American flag.

These premium covers are most appropriate for middle-sized and big indoor AC units. The dimensions range from 24” x 15” x 4” for middle-sized units to 28” x 20” x 4” for big ones.

You’ll notice that there is a big 4-inch height measurement associated with all Gerrard Larriett covers; those provide you with a better and tighter fit around the AC unit:

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3. QUALITYDEPOT Hypoallergenic Dust Mite And Allergy Control Cover [Best Budget]

The QUALITYDEPOT is the best indoor cover for your buck. It comes with the regular double insulation layers; one being made out of polyester and the other one out of meticulous quilted cotton.

It is important to point out that all covers provide people allergic to dust mite and other allergies a breathing space. If you’re allergic, you know that removing everything where the dust might settle is very useful, and the indoor air conditioner is known to create a safe harbor for dust in your house.

That’s why the quilted cotton in the QUALITYDEPOT air conditioner cover for inside the house is so important. It filters out all the dust particles that might otherwise enter the AC unit and be sprayed out as soon as you turn on the air conditioner.

simple indoor ac cover against dust and cold
QUALITYDEPOT is a simple, budget-friendly and efficient indoor AC cover that keeps out dust and cold air.

There are 3 available dimensions for small-sized and medium indoor AC units. The smallest one has measurements of 17” x 13” x 2.5” and the biggest one has dimension of 25” x 17” x 2.5”. You can order them here:

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4. Altriz Indoor Cover For Small Window Air Conditoner

The Altriz cover is a small air conditioner cover perfect for window-mounted AC unit. It is available in only 1 dimension – 17” x 13” x 2.5”. It will not fit the big 15000 BTU air conditioner, of course, but is it perfect for smaller 3000 BTU to 5000 BTU units.

The double insulation with polyester and quilted cotton provides the internal air condition with protection against dust and also keeps the cold air that might come in your house via the AC hose out.

It’s a sweet little cover with a diamond shape stitch pattern that fits nicely with the existing interior design. Here’s one example of how the installed air conditioner cover looks in a room:

cover for small window air conditioner
Altriz is a small window AC cover that fits nicely with the interior of the room.

It also costs less than $10 and usually comes with free shipping:

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5. Sturdy Covers Big Indoor AC Unit Cover

The Sturdy Covers cover has some surprising features. The type of polyester used on the internal insulation side (the one facing the AC) is 210 PU which is great at repelling the cold winter air that could sip inside your house via the air conditioner hose. The effective insulation helps you preserve heat during the winter and slashes the electricity bill.

This cover is made mostly for big indoor air conditioner units (usually mounted near the window) with 12000 BTU or even 15000 BTU:

sturdy covers cover for big window air conditioner inside the house
Sturdy Covers is designed to fit even the biggest 15000 BTU indoor air conditioners.

The biggest available dimensions measure 28” x 20” with the full 4-inch thickness (or height). You can see from the photo above how well those 4 inches surround the air conditioner’s vents.

Additionally, you can pick between the white and black color, depending on which one will fit your internal design better:

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Best Wall Air Conditioner Cover For Wall-Mounted Outdoor AC

There are two main purposes that point out why we need a cover for the outdoor wall air conditioner:

  1. To protect AC against the elements and prolong its lifespan (the obvious reason). Think rain, snow, leaves, grass, even birds nesting.
  2. To prevent drafts (less obvious reason). The cold air can enter the wall air conditioner and through a hose enter into our house since the AC unit and the one inside the house are connected.

Prolonging the lifespan of wall-mounted air conditioners is just plain hygiene; why would you not protect a $300+ worth of sophisticated equipment?

The less obvious reason why to cover a wall air conditioner is the drafts. In the winter, the cold weather outside can enter our house and raise the heating bill quite a bit if we have to constantly fight off the cold air.

Again, when choosing the wall-mounted AC cover it doesn’t matter that much if you have a Lennox or Carrier unit. What matters the most are the measurements; so do measure your wall air conditioner before buying a cover:

Window AC Cover:AC Defender Wall AC CoveriSOLe Wall AC Unit CoverJeacent Wall AC CoverLBG Products Heavy Duty Wall AC CoverFoozet Small Window AC Cover
Photo:sturdy covers wall or window AC coverisole window ac unit coverJeacent wall air conditioner cover for window sillsheavy duty wall ac unit cover by LBG Productsfoozet ac cover for small air conditioners and small windows
Dimensions:21'' x 16'' x 15''
25'' x 21'' x 15''
27'' x 25'' x 19''
21'' x 16'' x 15''
25'' x 20'' x 17''
27'' x 23'' x 18''
17'' x 12'' x 13''
21.5'' x 16'' x 15''
25.5'' x 20.5'' x 17''
27.5'' x 23'' x 19''
21'' x 16'' x 15''
17'' x 12'' x 13''
21'' x 16'' x 15''
25'' x 20'' x 17''
27'' x 23'' x 18''
Quality:4.8 out of 5 stars4.2 out of 5 stars4.6 out of 5 stars4.3 out of 5 stars4.1 out of 5 stars
Rating:4.7 out of 5 stars4.7 out of 5 stars4.6 out of 5 stars4.2 out of 5 stars4.5 out of 5 stars
Top5er status:Best SellerPremium ChoiceMost ReliableFor Crazy WeatherAlso For Small ACs
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1. Sturdy Covers AC Defender Wall Cover [Best Seller]

The AC Defender easily takes the No. 1 place as the best wall air conditioner cover. The serves the two main jobs of any wall AC unit cover perfectly:

  1. Protection against the weather. Its heavy-duty design with the thick 600D polyester exterior is designed to withstand the strongest storms, rainfalls, winds, and snows. The double strap buckle also fixes the cover to the wall air conditioner tightly.
  2. Completely prevents drafts. To completely prevent the cold air from entering the house via AC hose, you mustn’t leave air openings between the cover and the AC, and the cover fabric has to be as insulting as possible.

The AC Defender uses the two-buckle system instead of a one-buckle system to strap the cover over the air conditioner as tightly as possible, leaving no openings for the cold air to leak in.

What is more, it uses 600D instead of 300D polyester. The 600D version is thicker, provides better temperature insulation and is completely waterproof. Here is how the AC Defender looks like when covering a wall air conditioner:

waterproof AC defender cover for wall air conditioners mounted on a wall
The AC Defender is the No. 1 wall AC cover. Its made out of superior 600D polyester and has a two-buckle system for locking the cover over the air conditioner.

Most of the wall AC overs opt for a dark-colored cover. The AC Defender is available in black only.

It has 3 different dimensions that will accommodate almost all wall-mounted air conditioners, ranging from 21” x 16” x 15” to 27” x 25” x 19”. The price of the AC Defender is as reasonable as they get, you can check the price and pick the right dimensions below:

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2. iSOLe Window Air Conditioner Cover [+ Storage Bag]

The iSOLe cover is made out of heavy-duty 600D polyester which is just the material you should be looking for in your outdoor window air conditioner cover. The 600D is thicker than the 300D and provides better insulating properties which is important when it comes to stopping the cold winter air entering your heated and warm house via the wall AC hose.

The fabric itself is also coated with a UV-stabilized coating that makes the iSOLe cover durable on the sunny days.

Together with the cover you also get the neat storage bag where you can keep the wall AC cover over the summer when the air conditioner is working full throttle:

iSOLe cover for wall-mounted air conditioner
iSOLe cover comes with a storage bag to keep the cover neatly packed over the summer months when the AC is doing its job.

As most of the wall air conditioner covers, it’s sadly available only in black. Similarly to Top5er’s #1 pick, the iSOLe is available in 3 dimensions, ranging from small (21” x 16” x 15”) to big (27” x 23” x 18”).

You should measure the air conditioning unit on your window sill in order to nail down the dimensions. After that, you can pick the dimensions that best fit your AC here:

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3. Jeacent Window Air Conditioner Cover [Most Reliable]

Jeacent is the big name in the small industry of air conditioner accessories. They provide 4 dimensions of some of the best outside window air conditioner units on the planet.

The Jeacent cover is designed to keep everything that might cause problems out of the wall-mounted air conditioners. Around the house, you can see leaves, grass, insects, dirt and even dust particles that would just love to settle and rot inside the AC unit. By covering it up with the heavy-duty Jeacent cover, you can prevent that and prolong the lifespan of your AC unit:

Insulating your wall air conditioner with Jeacent cover
Insulating your wall air conditioner with Jeacent cover will prevent debris, leaves, insects, and dust to build up and rot in your wall AC unit.

Needless to say, the cover is water-resistant and reduces the heating costs during the winter by keeping the cold winter air out.

Jeacent cover is available in 4 dimensions. The smallest one is meant for really small 3000 BTUs units (17” x 12” x 13”) and the biggest one for really big 15000 BTUs AC units (27.5” x 23” x 19”). You can get the cover in robust dark brown color here:

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4. LBG Products Heavy-Duty Cover [Single Dimension]

The LBG Products cover is another decent cover that you can get at a bit of discount compared with the other wall air conditioner covers on the list.

It is made out of 600D PVC and includes the 2 strap buckles with which you can easily strap the cover over the wall air conditioner.

The problem is that it available in only one size; namely the 21” x 16” x 15”. These dimensions are one of the most frequent for wall air conditioners sold in the US:

lbg products heavy duty cover dimensions for united states standard wall air conditioner
LBG Products cover comes only in one size: 21” x 16” x 15”.

If this is exactly how wide, deep and high your wall-mounted AC is, you can get the cover here:

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5. Foozet Winter Cover For Wall AC Unit

The last on our triple Top5er list of the 15 air conditioner covers is the small Foozet cover. Why small?

Well, it features the XS version of the wall-mounted AC cover with the dimensions 17” x 12” x 13”. That’s a perfect dimension for 3000 to about 5000 BTUs units and if you haven’t find an appropriate cover for your unit by now, you just might want to check the dimensions of the Foozet cover:

foozet extra small wall air conditioner cover
Foozet cover features the smallest XS cover that can cover even the small 3000 BTUs units.

Additionally, it is available in 4 dimensions, ranging up to 27” x 23” x 18”. You can check them out here:

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How Do You Protect Your Air Conditioner?

We’ve seen a lot of DIY cover projects over the years. If you have made your own air conditioner cover, you can give us some tips.

Otherwise, $20 or $30 is usually enough to protect a sophisticated machine that is valued at least 10 times as much as the value of the cover. You should also check how you can additionally help your air conditioner in the long run by going through 21 AC maintenance list and tips.

Having a cover over the AC unit should help her to keep her stamina for years on end. Hopefully, you’ve got all the info you need when it comes to choosing a particular kind of AC cover.


5 Best Window Seals For Portable AC (For Easy DIY)

window seal for ac

Are you still duct taping your portable air conditioner’s vent out of the window?

Don’t get me wrong – it is a good practice. Knowing how to properly insulate the space your portable AC hose makes in the window frame will:

  1. Make a mobile air conditioner more efficient.
  2. Drop the temperature quicker.
  3. Save you a few bucks on the electricity bill.
  4. Keep the mosquitos out.

5 Best Window Seal Kits For AC Unit

Most owners of air conditioners are not explicitly aware of the range of options you encounter when wanting to buy a window cover for your portable AC.

That’s why we’ve made it easy. We looked at 10s of different kits and distilled which 5 are the best. Here are our editorial Top5er picks for the best window seal kits for portable air conditioners:

AC Window SealHOOMEE kitAirly 'Keep Cool' FitFirst kitMorningRising kitJOYOOO kit
hoomee ac window sealairly best window seal for ac fitfirst 158 inch window seal morningrising window enclosure joyooo airlock
Max. Length:157''158''157''158''158''
Instructions:Crystal ClearClearClearLackingLacking
Quality:4.9 out of 5 stars4.9 out of 5 stars4.8 out of 5 stars4.2 out of 5 stars3.9 out of 5 stars
Rating:4.9 out of 5 stars4.8 out of 5 stars4.8 out of 5 stars4 out of 5 stars3.8 out of 5 stars
Top5er status:Best SellerBest QualityBest BudgetCheapestReliable
Availability: Check Price Check Price Check Price Check Price Check Price
The problem is how many of us still seal a window (including the sliding glass window and even sliding doors) with, well, a duct tape.


Because there is a much better and more convenient way of ensuring the hot air from a portable air conditioner will fully be released into the environment.

We are, of course, talking about the modern window enclosure for portable AC.

Note: If you have a problem with cold air leaking into your house in the winter via AC hose, you should consider checking out our article about the best air conditioner covers.

What Is A Window Seal For Mobile AC Anyway?

All portable air conditioners need a vent for the hot air generated by the AC to be vented out of your house, flat, you name it.

Windows seals that are designed specifically to accommodate AC vents are nothing new, really. They have been around for about a decade and they are there to do 1 job and 1 job alone (or maybe 2):

  1. Insulate the portable AC exhaust that goes out the window.
  2. (Should look great).
In short, a window seal is basically the best way of how to vent your mobile AC out of the window. It should fill up all the nooks and crannies.


With style. The design of these tight enclosure seals for window frames should be to your liking. After all, you’ll likely be looking at the window and the seal strapped (with Velcro tape) on it for the whole summer.

So if you have a portable air conditioning unit, why didn’t you install a window cover for PAC 10 years ago?

How To Install A Seal For AC On The Window – Simplified

There is a simple reason why we’re only now experiencing a boom about window seals.

No, it’s not the duct tape method of sealing windows that went out of fashion.

It has everything to do with how easy modern window seals can be installed.

10 years ago you needed an AC expert to strap a window seal very carefully on the window frame. We ordinary people just found it too complicated and the window seal installation was bothersome.

In the last years, however, there is an emergence of the AC window seal kits. Yes, kits. Something an ordinary fellow can use to install the window enclosure in a DIY way with a simple use of Velcro tape.

The kits usually include everything you need to install the seal and insulate windows out of which the AC vent goes. And they cost around $20 in total.

However, one thing in mind when picking the best window enclosure kit for a portable air conditioner is how clear are the instructions written.

This is not basic and ugly duct tapping of the windows. You get quite a few pieces with every one of these kits and thorough and clear instructions are essential in order for you to properly install it.

You wouldn’t like for the window insulation to start peeling off after a week because the instructions were not clear about how to tightly seal the insulation tape, right?

No. 1 Window Seal Pick

No. 1 HOOMEE Universal Window Sealer For AC And Tumble Dryer

The best window seal is the HOOMEE universal Velcro-based seal. What is more, being universal, this can cover the window frame now just when using a portable AC unit but you can use it for tumble dryer as well.

One thing that HOOMEE offers is the variety of window seal sizes. A normal seal for the AC vent can be attached to a 157” or 158” window. You can have two problems with that:

  1. Window is too large. Whatever you do with the AC seal, there is no way to stretch it beyond 158-inches or so.
  2. Window is small. You can apply the normal window seal on it but much of the material such as Velcro tape you buy will go to waste. If you have a 50-inch window, shouldn’t you buy a smaller AC unit window seal for a lower price?

Additionally to standard size 400 cm seal, HOOMEE also offers two other versions:

  1. The big window enclosure for AC. Can fit a window up to 560 cm, or 219 inches.
  2. The smaller window seal. Will fit a window of length up to 300 cm, or 117 inches. It costs about 5 bucks less and you’ll have less Velcro waste to worry about.

Both with the small, normal or big version, you can fit not only one but two or more air conditioning vents (or you can have one from the tumble dryer and one from AC):

big window sealer for AC
Fit 1, 2 or more vents from AC or tumble dryer through the HOOMEE sealed window cover.

This makes the HOOMEE seal the most versatile on the list.

You might have some problems with the instructions; there are somewhat lacking the details. However, they have a nice short video of how to install the seal on the window.

In every case, keep one thing in mind when applying the Velcro tape to the window frame – it has to be applied on a dry, smooth and flat surface. If you can find such a surface, you shouldn’t have any problems with seal installation even without the step-by-step instructions.


  • Universal: For AC and tumble dryer.
  • Only one with various sizes: small, normal, big.
  • Can fit more than one vent easily, if the window allows it.
  • Is the best selling universal window seal.


  • The installation instructions are not as details as with other seal kits.
  • Can hardly be fit with a skylight.
  • Not appropriate for sliding windows.

No. 2 Window Seal Pick

No. 2 Best Window Seal- Airly ‘Keep Cool’

There is not a window seal on the market, for AC, tumble drier or anything else, that would be as simple and fully functioning as the Airly seal.

Their motto of ‘Keep Cool’ translates very-well into the seat itself. The zipper for the enclosure and adhesive fastener make the installation process very simple, and adhesive fastener just helps with that.

Apart from doing the job (and it does it well), the Airly airlock actually looks nice on the window.

Truth is that many of the seals on the market are not exactly visible appealing. Made out of plastic or low-grade cotton, they are not a much more pleasing sight than a window tapped all over by duct tape.

Here is how Airly window seal looks like when fully installed on a window:

seal for ac went
Airly seal perfectly fits the vent and the window, and it actually looks nice while doing so.

Does the Airly window seal fit most windows?

Airly can be installed on all windows with a maximum window length of 158 inches. That is quite an above-average max. window length for an AC seal and it will fit almost any window. Of course, if you have a window that is longer than 158, Airly won’t fit on it. However, given that you have to deal with a mobile AC unit, you can easily just put in under another smaller window in order to use the best window seal.

The essential part of every window kit for AC are the instructions. Without clear instructions, it’s hard to Velcro tape your way around the window, and mistakes can happen. Here are the step-by-step instructions for Airly that pretty much everybody can use:

window seal installation instructions
Simple step-by-step instructions for installing the Airly window seal for portable AC.

As you can see from the instructions on how to install the window seal, it can be pretty straightforward. Paste the Velcro tape, trim the edges, make sure that the seat aligns with the window frame, and unzip.

The installation shouldn’t take more than 10 minutes and it will actually look like a proper installation job.

One reviewer pointed out that, despite the smoothness window panel installation, the Velcro tape should be a bit more ‘sticky’.

A lot has been said about the stickiness of Velcro; for some needs, it is too sticky and for other, it should be stickier. In the world of window seals, we found that Velcro tape is pretty much the standard way of attaching the seal to the window frame and every seal for AC uses one. So, no way around that using Velcro (don’t resort to duct tape, of course).

All in all, if you’re looking how to seal space around the portable air conditioning vent, you’ll find Airly simple enough to use and tight enough so that no hot air (or mosquitos) will enter the room from the outside.


  • Appealing to the eye materials.
  • Zipper and Velcro tape included.
  • Step-by-step instructions can be easily followed.
  • Everyone can install this by him or herself.
  • Clear winner as the No. 1 window seal.


  • Velcro should be a bit more ‘sticky’.
  • Not appropriate for windows with a total length above 158 inches.

No. 3 Window Seal Pick

No. 3 Fitfirst Window Seal Review

When it comes to blocking the draft from a mobile AC unit via the window, Fitfirst does come in handy.

It’s easy to install and made out of high-quality materials that Fitfirst seal for the window is made out of giving it a nice and clean look.

What length of a window can you install Fitfirst on?

It should be 157 inches long or shorter. Also, be aware that it can be a bit of a stretch attaching it to any window that is 150+ inches. Yes, with a bit of trouble it can fit a 157-inch long window frame, but it will require a bit of sweating on your part.

Luckily, after it’s installed (photo below), your air conditioner will be more efficient and will readily cool you down and reduce your sweating:

fitfirst window seal assessment for air conditioning units
Fitfirst window seal when installed on a short-length window.

What kind of window can you install Fitfirst seal on?

Pretty much any window will do that is not too big. If the window near your air conditioner is too big, it might be a good idea just to move the AC unit under the other window. It’s portable, so that’s quite easily done.

Basically, the illuminated white fabric window seal is made out of lightens up the whole room. If you’re looking for air conditioners that work with a skylight, this light-my-room feature can be quite amazing to see.


  • High-quality materials are durable (despite the weather).
  • Tightly seals most types of windows.
  • Can illuminate the room substantially (white fabric + sunlight).
  • Almost comparable to No. 1 pick but a buck or two cheaper.


  • Has simple but not very thorough installation information.
  • Not as thick protecting fabric as Airly.

No. 4 Window Seal Pick

Cloth Window Sealing Place By MorningRising

MorningRising cloth seal for windows (if you need to put the AC hose through the window) is another good example of how simple and easy it to DIY the window seal.

Their window seal kit comes with everything you need to fill all the space around a portable air conditioner’s hose, and you can do it by yourself in less than 10 minutes – but do take 20 minutes in order to be as accurate in laying the Velcro tape around the edges of smooth-surface window frames as possible.

It can be used as a single-vent or double-vent air conditioner. However, the limiting factor is the type of window. It can’t be mounted on every kind of window; it is most commonly used on tilting windows but if want to install it on a basement window, skylight or balcony door, you’ll have too many problems with keeping it all intact.

In short, it can’t be used on these types of windows. It’s best to use it exclusively on tilting windows and you have to use a zipper in order to tighten the space around the vent like this:

tilting window how to seal it
Zip the seal tightly around the AC hose. Example: MorningRising seal.

Some AC units can also be stationed near sliding windows or doors. While No. 1, 2 and 3 pick on this list can accommodate such windows (albeit with a bit of struggle), the MorningRising cloth seal specifically informs their potential customers that the product cannot be used on the left or right sliding window or doors.

Nonetheless, this is the cheapest seal for a window on the list and is our budget pick.


  • Can be installed in 10 minutes.
  • Perfect for tilting windows.
  • Can accommodate one-tube or two-tube air conditioners.
  • Is the cheapest window seal.


  • Can’t fit on sliding windows or doors.
  • Can’t use the seal on a skylight.
  • Made out of cloth; can get a bit damp.

No. 5 Window Seal Pick

JOYOOO AirLock For Mobile ACs

If you’re looking for a reliable window seal to prevent the hot air from being released in the room the air conditioner is located in, you can opt to pick the JOYOOO AirLock.

Comparing it with other seals, two things stand out:

  1. Little info about how to install it (you’ll need to have a bit of technical inspiration to DIY it).
  2. Durable. If you manage to put it on the window, it will stick there for quite a long time; it is very well made which makes it quite durable.

Instructions are essential when putting a seal on the window; most of the seals come with step-by-step instructions. AirLock JOYOOO, however, lacks information to such a degree that somebody who bought it actually asked on Amazon how to install it.

That’s not a good sign.

However, nobody can deny how long the window seal can last, and that is the main reason that JOYOOO AirLock is included in the Top5er list.

It has some versatility as far a the length of the window is concerned (max. length is 158 inches). You should be a technical type to use the tape it without the manual but if you do a good job, the durability of the materials will ensure that you’ll be able to use it with the air conditioner for years.


  • Most durable.
  • Standard window kit is, well, quite standard.
  • May present a small technical challenge.


  • Lacking some essential instructions.
  • … how do you install this thing, really?
  • You’ll need technical skills to install it.

Which Is The Best Window Seal For You?

Let us know in the comments. Even if you use duct tape, you can share a photo or two. Some people use foam to seal the space between the AC vent; would be interesting to see one of those as well.

Keep cool.