Installing Portable Air Conditioner In Casement Window

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Installing Portable Air Conditioner In Casement Window Rating: 7,4/10 3144 reviews

Are you thinking of buying a portable air conditioner but not sure how you’re supposed to vent it?

How to Install a Portable Air Conditioner Through a Window. Since casement windows and crank windows open like doors, standard window kits will not fit.

Or maybe you’ve already got your eye on one but you still want to know all of the portable air conditioner venting options available so you can make sure it will work.

Perhaps, you’re even asking yourself the question, “Do portable air conditioners work without a window?”

If you’re looking for answers about portable AC units, you’ve come to the right spot.

We’ve got everything laid out for you right here in this article. We’ll even tell you how to vent a portable air conditioner without a window.

The Importance of Venting Portable Air Conditioners

You’re probably wondering why venting a portable air conditioner is so important to begin with. Does it even matter if you don’t vent it?

What’s the worst that can happen?

Well, to tell you the truth, if you don’t vent your portable AC unit then the machine won’t do you any good.

Here’s why.

The purpose of a portable air conditioner is to cool down a room, but in order to do that, it must extract heat from the air. If the AC unit is not vented outside or into another room, the hot air will remain locked-up inside the space. This will not only prevent the room from cooling but will actually make it hotter.

Venting a portable air conditioner is also important because it removes moisture from the air. The less humidity inside a room, the cooler it feels. If you don’t vent the portable AC unit, then the moisture will continue to build up and neutralize the cooling effect of the air conditioner.

As you can see, venting is a very important part of staying cool and maintaining an efficient air conditioner.

Up next, we’ll get into the various ways in which you can vent a portable air conditioner with and without a window.

If you’re looking to compare the top portable air conditioners, make sure to check our free guide on the best portable AC unit for your home. It shows you how to choose the perfect machine for every size room. If you’re more interested in saving money on a unit, take a look at our cheap portable air conditioner list.

Portable Air Conditioner Venting Options

Venting Portable Air Conditioners Through Windows

The easiest and most common way to vent your portable air conditioner is through a traditional window in your home.

So much in fact, that it’s standard to receive complementary window and venting kits with your machine upon purchase.

If you want to find out how to vent a portable air conditioner with a window kit, keep reading. Otherwise, skip to the next section that explains how to vent a portable AC unit without a window.

First things first, if you’ve decided to go the route of venting your device through the window, it’s important to ensure that the vending kit is properly installed. If not, obviously, the portable air conditioner won’t be able to remove hot air during operation.

So, follow these steps:

  • Set up the unit relatively close to a traditional window
  • Attach the exhaust connector to the unit
  • Fit the exhaust hose into the exhaust connector
  • Fasten the window kit to the venting window kit adapter
  • Slide window kit through the window, after which, close the window on the kit
  • Connect the exhaust hose to the venting window kit adapter

Granted, this is just a general guide, as depending on the portable air conditioner you purchased, installing a window kit may follow a different procedure. Always check the instruction manual provided before making any installations.

Venting Through Casement Windows

Casement windows aren’t like your traditional windows – they open like doors – however they are another possible medium which can serve as a vent.

For this reason, you can’t use a standard window kit to install an exhaust tube as you would normally do with regular windows. However, some homeowners are able to find an ingenious way to make a vent out of these windows.

Essentially, you remove one of the window panes and replace it with a layer of Plexiglas, after which, you make a hole big enough for the exhaust hose to fit through.

And there you have it, a makeshift vent.

Venting Through Sliding Doors and Sliding Windows

In both cases, you would have to install window brackets in such a way that they facilitate ventilation.

Sliding windows tend to be a bit trickier as the bracket needs to be able to fit whatever opening has been created for the vent.

In any event, you can always fill in whatever excess space which appears after installation with either Plexiglas or wood.

Venting Portable Air Conditioners Without a Window

The fact that you’re reading this guide likely means that you’re looking for the answer to this question, “Do portable air conditioners work without a window?”

And the answer is a resounding yes!

If you’re interested in knowing how to vent a portable air conditioner without a window or where exactly you can vent your portable AC unit, the following tips will be your guide.

Venting Through a Wall

One option which seems to be preferred by some people is actually using a wall vent to remove hot air from a portable air conditioner.

You can use this method to vent your portable AC unit to the outside or into another room such as a laundry room, storage area or garage.

Essentially, to make a wall vent, you have to carefully cut a hole in a wall which is big enough to accommodate the AC unit’s exhaust hose. Once the installation is completed, you can cover the circumference of the hole with a sealant such as silicone caulk. That way, the exhaust hose stays put.

Venting Through a Drop-Ceiling

This ventilation technique involves adding or reconfiguring a drop or panel ceiling into a ventilation zone.

This method is used quite often in computer server rooms because these areas usually aren’t equipped with windows, meaning that alternative sources of ventilation need to be implemented.

To vent your portable air conditioner through a drop-ceiling, just cut a hole in a ceiling panel that can accommodate the exhaust hose. Add some sealant around the connection joint, and you’re done.

Venting Through a Dryer Vent

While this is not a method we technically recommend and neither do manufacturers, it’s worth pointing out since some people have been successful in using it to vent their portable air conditioner.

The reason for caution against this technique is because most dryer vents tend to be smaller in diameter in comparison to portable AC unit exhaust hoses. For this reason, air might not be able to filter out of the vent as well as it can through a traditional vent.

Tapping into a dryer vent often involves consistent testing in order to maintain safe use of your portable air conditioner.

Nonetheless, using a dryer vent as a source of eliminating hot air from a portable air conditioner is still possible if you can connect your portable AC unit exhaust hose into it.

The Options for Venting Portable Air Conditioners are Endless

As you can see, if you’re looking for portable air conditioner venting options, you won’t ever be at a loss.

The fact that portable air conditioners can work without a window makes them very versatile machines. Even the top small room air conditioner can be adjusted to work with any of the methods outlined above. Besides, as long as you know how to vent a portable air conditioner without a window, you won’t ever be stuck for options.

The tips offered above are just a starting point for you to try. Hopefully one of those methods will work for you, but if not, use your imagination and creativity to vent your AC unit in a way that’s practical for you.

We hope that this guide was able to teach you some interesting facts about portable air conditioners and maybe even encourage you to purchase one if you haven’t already done so. You don’t have to resign yourself to a life of perpetual heat stroke inside your very own home. Get a portable air conditioner that will make your life a whole lot cooler.

Are you looking for a comprehensive guide on how to install a window air conditioner?

If so, you’ll find everything you need here.

This post offers step-by-step instructions on how to install window AC so you can get your new unit up and running in no time.

The process is not rocket science either. It’s actually a fairly quick job that won’t take up much of your time or require any special knowledge.

By following the steps in this guide, you’ll be well-prepared to install any size window air conditioner.

We’ll first go over the benefits of this types of appliances, then move onto the installation process for double-hung and casement windows, followed by sliding windows, and end with how to install a window air conditioner in a wall.

So, let’s get started.

Window Air Conditioner Benefits

If you haven’t quite decided on whether installing a window air conditioner in your home is the right thing to do, then this section is for you.

If you’ve already bought your window air conditioner and just want the steps for installation, you can skip this part of the guide.

Window air conditioners are undoubtedly one of the most popular and recognizable types of AC units out there. And for many people, these devices have become the go-to cooling systems for their entire house.

Why is that?

Well, window air conditioners have loads of benefits and these days they really give central air conditioners a run for their money.

Here’s a quick overview of some of the top advantages of owning a window air conditioner:

  • Affordability — One of the best things going for window AC units is that you don’t need to invest several thousand dollars to get one. It’s quite possible to get a premium-quality model for as little as a few hundred dollars. What’s more is that these devices don’t cost much to each month either. You can pay as little as $20 to keep the main area of your home cool for eight hours per day.
  • Energy Efficiency — Nowadays, most modern window AC units have remarkable EERs (Energy Efficiency Ratios). EER refers to the amount of energy that an air conditioner uses to adequately cool a space. In short, this means that your window AC unit will deliver colder air for a lower cost.
  • Easy Installation — These appliances differ from other common cooling systems like central air conditioning in the sense that you don’t have to be an HVAC expert to install them. It’s a pretty straightforward process that most anyone can do, even without any prior experience or knowledge.

To find the perfect window air conditioner for your needs, check out our top rated window air conditioner list. It includes the best models you can buy for each size room.

How To Install A Window Air Conditioner

Materials Needed

Here’s a checklist of the things you’ll need to have on hand before installing a window air conditioner:

  • The window AC unit
  • Measuring Tape
  • Screwdriver
  • Drill and drill bits
  • Insulating foam strips
  • Angle brackets and screws (in case your unit doesn’t come with them)
  • Weatherstrip (optional)
  • Knife
  • Another person who can assist you

Step 1: Choose a Window

The first step for how to install window AC units is to identify the window in your home where you’d like the appliance located.

Then, measure the width of the window and the width of the air conditioner to make sure that the unit will fit.

If the window is too large, don’t worry, because each window AC unit comes with an accordion panel to fill in the gap.

If the window is too narrow, you’ll need to buy a smaller window AC unit.

Also, window air conditioners come in two versions: one for double-hung windows and another for casement windows. The units are not interchangeable and you’ll need to make sure that you have purchased the correct version for the type of window you’re going to install it in.

Step 2: Putting Your Window AC Unit Together

Once you’ve got your window air conditioner in hand, it’s time to set it up.

Carefully take out all of the parts from the box and assemble the unit as outlined in the instruction manual

Most window air conditioners require you to attach additional parts like flanges and accordion-style panels to the unit with screws. If your package already came with screws, use your screwdriver and insert them where needed. If not, you’ll need to purchase these separately before starting the installation process.

Step 3: Inserting the AC Unit in the Window

This step is best performed with the help of a friend or family member since window air conditioners can be heavy.

Open the window you’re going to install the appliance in.

If your AC unit came with a weatherstrip, line it along the windowsill. Although these strips are completely optional, they do help to safeguard your unit from any damage you may incur during installation and removal as well as prevent cold air from escaping.

With the assistance of a partner, lift and place the air conditioner onto the bottom of the window frame. Then, slide it backwards until the top flange is even with the bottom part of the open window.

While your partner is holding the unit in position, proceed to the next step.

Step 4: Lower the Window

Carefully lower the open window sash until it rests comfortably behind the top-most flange of the window AC unit while also ensuring that the bottom flange is fitted securely against the windowsill.

Step 5: Install Angle Brackets

Your unit should have come with either one or two small angle brackets.

These brackets are essential as they lock the two sashes of your window in place to keep the unit from inadvertently falling out of the window.

To install the brackets, place one on each side of the top of the window sash that’s supporting your window AC unit.

One edge of the angle bracket will fit snugly against the inside groove of the window while the other will lay flat on the top of the window sash.

Using your screwdriver and the included screws, screw these brackets into place. If the wood is too tough, you may need to use a drill to create a starting hole and/or tighten the screws down.

Step 6: Seal the Window Gap

The final part of this process on how to properly install a window air conditioner is to create a seal that blocks the gap between the lower and upper sash.

You can do this with a foam insulating strip. Your window air conditioner should have come with one, but in case your unit didn’t, you’ll need to pick one up from your local home improvement store.

Push the strip into the space where the lower window sash meets the upper one. If the strip is too long, use a knife to cut it to the correct length.

Once the foam strip is fitted properly, you’re done with the job of installing a window air conditioning unit.

Now, all you have to do is plug it in and turn it on.

How To Install Air Conditioner in Sliding Window

Although window air conditioners are not meant to be installed in sliding windows, there are some extra steps you can take to make it work.

The trick here is to build a solid frame that will hold the window AC unit in place and cover up the extra space above the appliance.

For this project, you’ll need the following materials:

  • (2) 8-foot 2 x 4 pieces of lumber
  • (1) Sheet of plywood
  • (16) 3-inch screws
  • (24) 1 1/4-inch screws
  • Drill and drill bits
  • Saw
  • Screwdriver

Step 1: Measure the Window and AC Unit

The first step in how to install air conditioner in sliding window is to measure both the window opening and the size of your air AC unit.

These measurements are critical because if you don’t get them right then the AC unit may not fit correctly.

Measure the height of the window opening. Take this measurement between the bottom to the top sills.

Measure the width of your air conditioner—including the side vents. They do stick out a bit.

Measure the height of your air conditioner. Don’t include the flanges on the top or bottom.

Step 2: Build the Initial Frame

Using a saw, cut the 2 x 4 pieces of lumber into the following sizes:

  • (2) Height of the window opening
  • (3) Width of the air conditioner—including the side vents
Installing Portable Air Conditioner In Casement Window

You now want to build a rectangular frame with these pieces of cut lumber. To do that, follow these steps:

  • Lay the 2 longest pieces on the ground parallel to each other and resting on their sides. Then, fit one of the shorter (air conditioner width) pieces between the top to ends (also on its side) and screw them together using a drill and 3-inch screws. Use two screws on either end for a firm hold.
  • Take another short piece of lumber and wedge it between the bottom (opposite) end of the two sideboards. Make sure this piece is also on its side and screw it together to finish the frame with two screws on each edge.

You should now have a rectangular frame.

Lift it up and position it inside the window opening to make sure that it fits. If it’s loose, you can use shims to wedge it into place. Concrete microstructure properties and materials pdf to word.

Step 3: Finish the Frame

With the initial frame in place, hoist up your window air conditioner and place it into the frame opening.

Move it backward until the top flange is even with the sides of the wood frame. Then, take a pencil and mark a line on each side of the frame to indicate where the top of the window unit with the flange rests.

Remove the air conditioner from the frame.

Remove the frame from the window.

Take the last short piece of lumber and slide it into the middle of the frame while lining it up with the two marks you made on either end of the frame. Then, screw this board in place on both sides using two screws on each end.

Replace the frame in the window.

To keep the frame securely in place, use a drill to put two screws each through the bottom 2 x 4 and top 2 x 4 so it anchors the frame to the window sill.

Lift your air conditioner and slide it back into the frame. The unit should now stay in place after you let go of it since the middle piece of lumber will prevent the air conditioner from falling backward and out the window.

Step 4: Cover the Top of the Frame

At this point, you have an air conditioner installed in a sliding window; however, there’s still a wide opening above the unit.

To fix that, you’ll need to cut a piece of plywood to cover this spot.

Measure the width and height of the opening and transfer those measurements onto a piece of plywood.

Cut the plywood.

Place the plywood over the top opening of the frame and use the 1 1/4-inch screws to secure it in place. About 4-6 screws on each edge should be fine.

Step 5: Paint the Frame (Optional)

If you don’t like the looks of raw wood, you can always prime and paint the frame to match your existing window trim.

This step is optional but one that some people like to do.

You can either do this before securing the frame in place in the window or after the unit has been installed. It’s up to you.

How to Install a Window Air Conditioner in a Wall

Can you install a window air conditioner in a wall?

That’s another popular question.

The truth is, you can’t install a standard window AC unit in a wall because the way these appliances vent hot air is out the sides of the unit.

If you were to install one in a wall, then the hot air would get trapped between your drywall and cause all sorts of problems.

The solution here is to buy a specific air conditioner that’s meant for wall installation, called a “through the wall air conditioner”.

Through the wall air conditioners looks identical to window AC units except for the fact that their hot air vents are located on the back of the appliance. This allows hot air to escape freely and not get trapped between wallboards.

You can find the top through the wall air conditioner units here. On that page, we explain how to get the right size unit for your needs so you can save the most amount of money on the initial purchase and on your monthly electricity bill.

Getting the Right Size Window Air Conditioner

Now that you know how to install a window air conditioner successfully, it’s also a good idea to confirm that you have the right size air appliance for the room you want to use it in.

Like with any appliance, window AC units come in a variety of sizes.

And the cooling capacity for these air conditioners is determined by the unit’s BTU (British Thermal Unit).

BTU numbers tell you how much energy your cooling system uses to cool down a room. The larger the number, the more space the window air conditioner can cool.

This is why measuring a room before purchasing a window air conditioner is important.

If you install a window AC unit that is too powerful for the room that it’s placed in, the appliance will be overworked. On the other hand, if you install one that’s too weak for the space then it will run too often.

Both of those situations will raise your energy bill more than usual, so it’s best to get the proper size unit for each size room.

To do that, all you have to do is measure a room’s square footage.

Square footage (sq. ft.) is calculated by multiplying the width x length of a room (in feet).

For example, a 10′ x 20′ room = 200 sq. ft.

Once you have the total square footage for the room, you can select a window air conditioner that has the corresponding BTU number.

The chart below can help.

Square Footage to BTU Chart

Room Size (Square Feet)Capacity Needed (BTU)
100 up to 150 sq. ft.5,000 BTU
150 up to 250 sq. ft.6,000 BTU
250 up to 300 sq. ft.7,000 BTU
300 up to 350 sq. ft.8,000 BTU
350 up to 400 sq. ft.9,000 BTU
400 up to 450 sq. ft.10,000 BTU
450 up to 550 sq. ft.12,000 BTU
550 up to 700 sq. ft.14,000 BTU

Enjoy Your New Window Air Conditioner

We hope this guide on how to install a window air conditioner was helpful.

As you learned, there are a variety of ways for how to install window AC units in any house. No matter if you have double-hung, casement, or sliding windows, there’s a solution to make things work. You can even install an air conditioner in a wall if you need it; however, you just need to make sure it’s the right kind of appliance for that application.

Regardless of the installation process you choose or the type of air conditioner you buy, we’re sure that you’ll enjoy the cooling comfort that these devices provide.