Best 18000 BTU Window Air Conditioners of 2026

The Amazon Basics Window-Mounted Air Conditioner is an energy efficient air conditioning unit that cools rooms up to 150 square feet with standard 9 foot ceilings. It features 7 temperature settings, dual cooling and fan settings, adjustable air direction, and an inbuilt filter that can be easily removed, washed, and reused. The window-mounting kit includes adjustable side panels that expand to fit standard windows.

The Midea U Smart AC offers a quiet cooling experience with its unique U-shaped design that helps block outside noise, making your room peaceful. You save more on energy bills thanks to its advanced inverter technology, which reduces power use by over 35% compared to regular units. Control is easy and flexible; you can manage the AC from anywhere using a smartphone app or voice commands via Alexa or Google Assistant. Plus, its design lets you keep your window open for fresh air and a better view without losing cooling power, adding comfort and convenience to your space.

The Midea 5,000 BTU EasyCool Window Air Conditioner is perfect for smaller rooms, offering 7 temperature settings, 2 cooling/2 fan-only speeds, and 2-way air direction. It has a Combined Energy Efficiency Rate (CEER) of 11.0 and is quieter than a household refrigerator. Installation is easy and all mounting accessories are included. It is suitable for windows 23''-36'' wide and minimum 13'' high.

The Frigidaire FFRA051WAE Window-Mounted Room Air Conditioner is a 5,000 BTU air conditioner with temperature control and an easy-to-clean washable filter. It features an adjustable side panel design, a long power cord, and an effortless restart. It is compatible with a mounting bracket and side panel (sold separately). It is suitable for rooms up to 150 square feet, and has a noise level of 52 dB.

The GE 5000 BTU AC is designed to cool small rooms up to 150 square feet efficiently, making it perfect for bedrooms, home offices, or studio apartments. Its quiet operation ensures you can enjoy cool air without noise disturbance, ideal for a restful night's sleep. You can easily adjust the temperature with two cooling modes and two fan speeds, giving you control over your comfort. Plus, the included easy install kit makes setting up this unit in your window simple and hassle-free, so you can start cooling your space quickly and conveniently.

The Midea Window AC offers two cooling modes, allowing you to choose the ideal setting for your comfort. With two fan speeds, you can easily adjust the airflow to suit your preference, whether you want a gentle breeze or stronger circulation. The unit also features seven temperature options, giving you precise control over your room’s climate. Designed to fit windows between 23 and 36 inches wide and at least 13 inches tall, this air conditioner is versatile for many room setups. These features make the Midea Window AC a convenient and customizable cooling solution for small spaces.

The ROVSUN Window AC & Heater offers an all-in-one climate control solution for rooms up to 350 square feet. With fast cooling and heating capabilities, you can quickly adjust your environment to your liking, whether it's a hot summer day or a chilly winter night. The thoughtful design features an LED display and multiple modes, allowing you to customize your comfort easily. Plus, with Wi-Fi connectivity and voice control, you can manage the unit from anywhere, ensuring a welcoming atmosphere as soon as you arrive home. Installation is straightforward, thanks to the included parts and clear instructions.

The ROVSUN Window AC Heater is designed to quickly cool or warm rooms up to 350 square feet, making it perfect for your home, office, or apartment. You can easily control the temperature between 61°F and 88°F using the LED display or remote, giving you full control over fan speed, timer, and modes. Setting it up is simple, thanks to included side panels and clear instructions, which save you time during installation. Plus, it’s energy-efficient with a quality compressor that helps reduce power use and costs, so you can stay comfortable without worrying about your electricity bill.

LG 8000 BTU AC is a versatile window air conditioner suitable for rooms up to 350 sq. ft. The low noise performance ensures quiet operation at only 53dB, providing you with a peaceful environment. With 3 cooling and fan speeds, including Auto Cool, you can personalize your cooling experience. The electronic controls with remote make it easy to operate. Additionally, the Auto Restart feature turns the unit back on automatically after a power outage, maintaining your desired room temperature without any hassle.