10 Best Small Window Unit 2025 in the United States

The Midea 8,000 BTU Smart Inverter window air conditioner is a solid choice for cooling and heating rooms up to 350 square feet, making it well suited for medium-sized bedrooms or small living spaces. Its cooling capacity is strong enough to handle warm summer days, while the added heat pump feature can provide supplemental warmth during colder months, though the heater works best only when outdoor temperatures are above 41°F. Energy efficiency is a key strength here, with an Energy Star rating and an inverter compressor that uses up to 35% less electricity compared to standard models, helping save on electricity bills. Noise is kept impressively low at around 45 dB, which is quieter than many window units, allowing you to work or sleep without distraction.

The installation fits double-hung windows with openings between 24 and 38.5 inches wide, and the unit's compact size makes it manageable to install with the included kit. Additional features add convenience, including WiFi control through a smartphone app, voice assistant compatibility, a remote control, and multiple modes like dehumidifier and fan settings. The washable filter is easy to access, which helps maintain efficiency, but like all window units, installation and sealing might require some effort to avoid drafts.

One downside is the 1-year limited warranty, which is shorter than some competitors offer. Also, the heating function's limitation in colder climates might reduce its usefulness if you want year-round warmth. This Midea unit balances effective cooling, quiet operation, and smart features at an energy-friendly level, making it a good fit for anyone needing a versatile and efficient air conditioner with heating capability in a medium-sized room.

The Midea 12,000 BTU EasyCool Window Air Conditioner is designed to cool medium-sized rooms up to 550 square feet, making it a good fit for apartments, offices, or bedrooms. It offers three useful functions in one device: cooling, air circulation with a 3-speed fan, and a dehumidifier to reduce moisture. This versatility is great if you want more than just cooling. The unit is fairly energy efficient, featuring an Eco mode and a timer to help save on electricity costs. Its Energy Efficiency Ratio (EER) is decent for this size category, helping you keep running costs moderate. Noise-wise, it operates at around 55 dB, which is quieter than a typical household refrigerator, so it won’t be too disruptive in your living space. Installation is straightforward for anyone with basic DIY skills. It fits standard window frames sized 23" to 36" wide and 14" high, and comes with all necessary mounting brackets—though you'll need your own screwdriver. The unit is on the larger side in terms of physical dimensions and weight (about 75 pounds), so consider this if you plan to move it often.

Additional features like remote control and an LED display add convenience, especially for changing settings from across the room. The reusable filter helps keep dust and pet hair out of your air, which is a nice plus for allergy sufferers. Some users might find the unit a bit heavy to install alone, and while the noise level is low for an AC, it’s not silent. Also, the warranty covers just one year, which is fairly standard but shorter than some competitors offer. This Midea model delivers solid cooling and extra functions with good energy efficiency and easy operation, making it well suited for anyone looking to cool a small to medium room without much fuss.

The LG 12,000 BTU Window Air Conditioner is a solid choice for cooling rooms up to 550 square feet, making it suitable for bedrooms, living rooms, and medium-sized apartments. The unit's cooling power is commendable, ensuring a comfortable environment even during hot days. The noise level is impressively low at 52 dB, allowing for quiet operation, which is beneficial for both work and sleep environments.

Users can enjoy customizable cooling with 3 fan speeds and auto cool mode, providing flexibility based on personal preferences. The inclusion of a remote control and digital control panel enhances usability, allowing for convenient adjustments from across the room. Additionally, the 4-way air deflection feature ensures even cooling distribution throughout the room. The unit also comes with a timer function, enabling users to set specific cooling schedules to save on energy costs.

Installation is simplified with the provided window installation kit, ensuring the unit fits snugly into standard window sizes. On the downside, the Seasonal Energy Efficiency Ratio (SEER) is 13, which is decent but not the highest in terms of energy efficiency. The unit is not Energy Star certified, which may be a consideration for those looking to minimize their energy consumption further. Despite these points, the LG 12,000 BTU Window Air Conditioner offers reliable cooling performance with practical features tailored for convenient use.