21 best air conditioners for casement windows 2024 – Top Brands Rated

Multi-Speed Fan: Features three different fan speeds, for more cooling flexibility.

Sleep Mode: Maximum comfort throughout the evening hours with the added benefit of energy savings. With Sleep Mode, the temperature gradually increases a few degrees over the evening.

Programmable 24-Hour On/Off Timer: Customize times to fit your schedule for immediate comfort when you get home. The built in timer allows you to preset the unit to turn on and off in half hour increments.

Effortless Temperature Control: Our air conditioners maintain the preset room temperature, so you will remain comfortable at all times.

Remote Control: Allows you to precisely control the temperature and fan speed from across the room.

Easy-to-Clean Washable Filter: Capture filth from the air and keep your dehumidifier working efficiently with our easy-to-clean washable filter.

SpaceWise Adjustable Design Optional Side Panels: With the Adjustable Side Panels, the side panels will extend to best fit your window.

Power Cord

Comes with an extra long three-prong cord — makes extension cords unnecessary.

ULTRA QUIET - The Midea U Smart Inverter AC unit is 9 times quieter than traditional units. The U-shape design uses your window to blocks noise outside and the high efficiency Inverter system warrants ultra low noise and vibration. This design allows for extremely quiet operation as low as 42 dBA - almost as quiet as a library – so you can get a restful night’s sleep or binge your favorite shows undisturbed.Controller type:Voice Control,android,ios.Air Flow efficiency:202.94 CFM

MORE THAN 35% ENERGY SAVINGS - With the advanced DC Inverter technology, Midea U achieves over 35% energy savings compared to other traditional units, and it's the first window AC to obtain the ENERGY STAR Most Efficient 2022 Certification. You may also get exclusive benefits from your local energy distributor.

FLEXIBLE WINDOW OPENING - Midea U-shaped design allows your window to open, bringing fresh air into your home anytime and allowing you to maintain more of your view even when the unit is installed. The Anti-Theft Mechanism locks the closed window for added security

SMART CONTROL - The Midea U Smart Inverter Air Conditioner is Wi-Fi enabled and can be controlled from anywhere through the cloud using the MideaAir app on iOS or Android. You can also use voice commands throughout your house, office, or apartment using Alexa or Google Assistant.

ROBUST INSTALLATION - Install the included quick-snap bracket, set the unit on the bracket, and secure the sidearms. After that, you are all done and ready to enjoy. Available for single-hung or double-hung windows with size: 22"-36", minimal height at 13.75".

Effortless Temperature Control: Our air conditioners maintain the preset room temperature, so you will remain comfortable at all times.Controller type:Button Control.Air Flow efficiency:136 CFM

Easy-to-Clean Washable Filter: Capture dust from the air and keep your dehumidifier working efficiently with our easy-to-clean washable filter

SpaceWise Adjustable Design Optional Side Panels: With the Adjustable Side Panels, the side panels will extend to best fit your window

Power Cord: Comes with an extra long three-prong cord — makes extension cords unnecessary

Effortless Restart: Automatically resumes operating at its previous settings when power is restored to your unit

Compatible with our mounting bracket (B0872XNZP3) and side panel (B0872Y4MCL). These accessories are sold separately

Revolutionary DUAL Inverter technology gives powerful yet silent performance, operating at sound levels as low as 44dB in sleep mode

DUAL Inverter technology is up to 25% more energy efficient than the ENERGY STAR certification requirement, saving you energy and money

LG ThinQ Technology lets you control your LG air conditioner from anywhere. You can start or stop cooling, change the mode, or set the temperature while on the go. It also works with Amazon Alexa and Hey Google so you can change settings with simple voice commands

4 cooling and fan speeds with Auto Cool allow you to customize your cooling

LW1022IVSM is ideal for cooling medium rooms (15 'X 30') up to 450 sq. ft.

Specially designed for casement-window or sliding-window installation - installation kit included (Not suitable for standard-window installation)

10,000 BTU air conditioner cools a room up to 450 sq. ft. with dehumidification up to 3.4 pints per hour (Uses standard 115V electrical outlet)

Multi-speed electronic controls with 24-hr. on/off timer and full-function remote control

Auto cool, Energy Saver mode, Sleep mode, 4-way air direction and washable mesh filter with check filter alert

Energy Efficiency Ratio (EER): 10.4

Window height- 21.5 inch minimum / 40 inch maximum. Minimum window width- 15.5 inch

PERFECT FOR SMALLER ROOMS - Midea's Affordable Window AC unit is perfect to help your room be as comfortable as possible. It can cool 150 sq. ft. with 7 temperature settings, 2 cooling/2 fan-only speeds, and 2-way air direction to give you the perfect amount of cooling every time.Controller type:Button Control.Air Flow efficiency:145 CFM. Moisture removal-1.27 pints/ hr

ENERGY EFFICIENT- Midea's 5,000 BTU window air conditioner has a Combined Energy Efficiency Rate (CEER) of 11.0 which helps reduce the energy costs to save you money throughout the year.

QUIET & EASY TO USE - This window AC unit is quieter than a household refrigerator. It also features easy-to-use mechanical controls to quickly set the time, temperature, and mode and has a removable & reusable air filter.

EASY INSTALLATION - Easily install in your home or apartment's existing window frame. Suitable for windows 23''-36'' wide and minimum 13'' high. All mounting accessories are included. A screwdriver is required (but not included) for installation. For some window frames, pilot holes are recommended before installing screws. Please see included instruction manual for further detail.

WARRANTY: 1 Year Parts & Labor Warranty comes with each Midea product to ensure the quality of our brand to our customers. Our team is happy to help if any questions or issues arise and make sure to register your product on our website for even faster support in the future.

NOTE: REMOTE CONTROL IS NOT INCLUDED (MECHANICAL CONTROL ONLY)

Energy Star Certified- This air conditioner has met the high standards of the ENERGY STAR Program using energy-efficient technologies that translate into electricity savings.

Multiple Fan Speeds- 3 cooling and fan speeds with Auto Cool allow you to customize your cooling.

Maximum Usability- Easy to use electronic controls with remote

Auto Restart- After a power failure, Auto Restart will automatically turn the unit back on when power is restored

Cools Rooms Up to 800 Sq. Ft. - LW1516ER is ideal for cooling medium rooms (20' X 40')

Energy efficiency Ratio (EER): 11.3 (cooling)

Special 230V electrical outlet required (unit will not work with a standard 115V outlet)

12,000 BTU cooling for rooms up to 550 sq. Ft

11,200 BTU heating for Approx. 450 sq. Ft

2 cooling speeds/2 heating speeds/2 fan speeds

GE 5100 BTU MECHANICAL WINDOW AIR CONDITIONER - Designed to efficiently cool rooms up to 150 sq ft; easy install kit included so you can start cooling right away

BEST FOR SMALL ROOMS: This AC unit is the right size for delivering 5100 BTU cooling capacity to smaller areas like bedrooms, studio apartments, guest rooms, and home offices

LOW-NOISE OPERATION - Keep the cool air flowing with minimal disruption; ideal for nighttime use in bedrooms

MAXIMUM COMFORT: Efficient with 2 cooling modes and 2 fan speeds to provide flexible and optimal room temperature; controls with 10 temperature settings make it easy to adjust cooling to your comfort

EASY INSTALLATION AND CLEANING: This AC has a fixed chassis and installs easily in a double hung window (size: W 21.875 - 36 x H 13.375") with included EZ Mount installation kit; slide-out filter makes cleaning a breeze to keeps your unit running its best when cleaned every 30 days"

Quick to Cool: The 6,000 BTU air conditioner for window-mounted installation is what you need to efficiently cool your apartment, bedroom, living room, or any environment!

Functionality: Cools a room up to 250 sq. ft. with dehumidification up to 1.5 pints per hour.

Temperature Sensing “Follow Me” Remote Control: With a thermostat built into the remote control, say good-bye to uneven room temperatures. The remote makes it easier to control the unit from anywhere in the room and its integrated thermostat signals the AC to cool the space based on where you are.

Energy Star Rated Cooling: Energy Star efficiency saves you money on your electric bill (12.1 EER).

6.5-ft. LCDI power cord with NEMA 5-15P plug uses standard 115V electrical outlet.