Searching for the Air conditioner unit that suits your needs can be a long and laborious task, especially if, like me, you require an AC unit to fit your Casement windows. There’s less of a demand for such air conditioners, and therefore they are harder to come across in stores and even online!
Too often, standard window AC units are claimed to also fit vertically into casement windows, however this is rarely the actual case, and can have unwanted consequences if attempted…
Therefore, due to all of the above, this webpage was created to make it easier for people to find the correct casement window air conditioner unit for them, without the hassle of spending hours scouring the web, being directed to the wrong models over and over again…
What’s more, all of the products featured here were only selected if they have excellent reviews from pleased customers, so you don’t have to worry about buying a hunk of junk either!
Things To Consider When Looking At Air Conditioners For Casement Windows
Certainly the most important item to look for is the air conditioner width. It must fit into the casing of the window. Therefore, check to see that the casement window air conditioner width ( usually the smallest of dimensions ) will be fitting into your open window.
The next important feature to look for is the size of the air conditioner, measured in BTU per hour, or BTU for short. This measure determines how big a room (in square feet) can be effortlessly cooled in the hottest of days.
If your window is in a hard-to-reach location, then it is also important that the remote control is included in the package.
Frigidaire Casement/Slider/Vertical Window Air Conditioner Review
An excellent AC unit from a well know trusted company, the following products boast great reviews from very satisfied customers, covering a wide range of room sizes the 8000BTU unit is perfect for Medium sized rooms as large as 350 sqr. ft, the 10000BTU unit is excellent at cooling medium to large sized rooms- anything up to 500 sqr. ft, and the 12000BTU model is best suited to large rooms with its capacity to cool an impressive 640 sqr. ft!
Each model in the range comes with a remote control for all the unit’s functions, including fan strength, and airflow direction in the room. An advanced antibacterial filter which removes not only bacteria, but also allergens and any unpleasant odours! Keeping your home both cool and fresh!
Sleep mode is also available to gradually increase temperature to keep you comfortable without waking you with sudden temperature changes while you sleep.
A low operational wattage and Energy Star certification across the range allows for savings on running costs, and also quiet operation!
A quick re-cap of the frigidaire range’s great features:
- Excellent cooling capacity
- Adjustable fan speeds
- Control the direction you want the air to flow
- Antibacterial & energy saving air conditioning system
- Simple internal access for easy cleaning
- Remote control included
1. Frigidaire FFRS0822S1 8000 BTU Heavy-Duty Slider Casement Window Air Conditioner Review

With just over 14 inches in width, the Frigidaire FFRS0822S1 8,000 BTU Slider/Casement Air Conditioner will fit 15 inch slider and casement windows (or wider) just fine. It will cool areas up to 350 square feet or more. The unit is 61 lbs. light and easy to install. It comes with a full-function yet simple to operate remote control, so it will be easy to operate no matter where your window is located.
2. Frigidaire FFRS1022R1 10000 BTU Slider Casement Room Air Conditioner Review

The FRA103KT1 Sliding Window Air Conditioner will easily cool rooms up to 500 square feet on the hottest of days. To maximize your comfort, the air flow can be adjusted four ways. Also for your convenience, you can control the unit both by on-the-unit controls or with the remote. This is especially useful when using the unit in the bedroom where, for instance, you can set the air conditioner to sleep mode right from the bed before you fall asleep. The buyers feedback is generally extremely positive for this sliding casement window air conditioner.
3. Frigidaire FFRS1222Q1 12,000 BTU Window-Mounted Slider/Casement Room Air Conditioner Review

When you have a larger space to cool, up to 550 square feet, this Frigidaire FFRS1222Q1 will be the right machine for the job. The powerful, 1 ton, cooling, and its quiet operation makes it suitable for any room, be it a bedroom, living room or your office or home office. Despite its high cooling capacity, the unit will still fit into a horizontally sliding window or casement window that opens at least 15 inches wide. The FFRS1222Q1 features a convenient remote control.
Perfect Aire 3pasc10000 10000 BTU Casement Air Conditioner Review

Designed specifically for Casement, vertical, or sliding windows, this Perfect Aire Model is easy to both use and install, and comes complete with the parts needed to mount it to your Casement window. Operates at 115 volts, 1,050 watts, 10 amps, and uses a washable anti-bacterial filter to keep odours and bacteria at bay!
It also features numerous great additional features, including:
- Energy saving mode to reduce running cost
- Makes very little noise compared to other air conditioner units
- Remote control supplied as standard
- Anti bacterial
- Filter tilts out to allow for convenient cleaning
- Pleated quick install kit
Bionaire Twin Casement / Vertical and Horizontal Window Fan Review

Fits both Casement / vertical and horizontal window types
A more economical option, though not strictly “air conditioning“, this twin window fan is still effective at cooling your home on a hot day.
Much smarter than a conventional fan, the Bionaire not only blows cool air into your home, but simultaneously removes hot, stale air. It also features a thermostat to shut its self off when the desired temperature has been reached inside, and can be fitted to almost any window type- horizontal, slider, vertical or casement.
- Adjustable fan speeds
- Removes warm, stale air, while blowing cool air indoors
- Remote control & LCD display to control and display desired temperature
- Fits numerous window types, casement width from 24″ to 37″
- Includes extenders for fitting to varying window sizes
If you are concerned that your window air conditioner is not getting the support it needs, this highly rated, heavy dut Window Support Kit Air Conditioner bracket may be just what you are looking for.
How to Install Vertical Window Air Conditioners
Installing a casement vertical window air conditioner into your apartment or garage window is actually an easy task, and it can be accomplished within an hour as long as you have all the necessary parts and pieces.
To begin with, decide which window you want the vertical window air conditioner in. Make sure that the window is close enough to an outlet so that the unit can be plugged in without using an extension cord, because it is a huge fire hazard if you do.
Measure the square footage of the entire room and then go and purchase a unit that has the correct BTU rating.
After you have decided upon the placement, and went down to your local home improvement center and purchased the correct vertical window air conditioner for your application, it is time to install the unit. Before actually sliding the unit into place, though, you need to inspect the window sill that it will be sitting on. If there are any rotten or damaged pieces they need to be replaced before installing the vertical window air conditioner.
If the window sill is in good condition and has a flat surface, then you can proceed with the installation. The first step is to install the mounting bracket that came with the unit, and if it did not have one, go get one. It is always better to be safe when you are dealing with home improvement items that are this heavy.
After the bracket is in place, slide the unit in and attach it to the bracket, which will prevent the unit from rocking back and forth, making it stable and safe. Close the window and see how well the unit fits into the opening. If the sides of the unit have a way to adjust to fit into the window tighter, do so now.
The next step in the installation process is to weatherproof the window and the vertical window air conditioner. To accomplish this you must add weather stripping sheets around the outer edge of the unit, in every spot that the window or seal touched it. After you have installed them, check to see if you can see any light coming through from the other side. If you can, then you need to run another strip, or a thicker strip, do stop all drafts.
After you have weatherproofed around the edges, you need to climb outside and make sure that the unit fits tightly into place. If you see any areas that may cause leaks, use a basic latex caulk and run a bead around it.
Installing a vertical window air conditioner is an easy task that can be accomplished by anyone. You may have to have a helper lift the unit into place, but other than that, there is no reason to hire a contractor for this job.