10 Best Air Conditioner Window 2026 in the United States

The LG 24,500 BTU Smart Window Air Conditioner is designed for large rooms up to 1560 sq. ft., making it suitable for bedrooms, living rooms, or apartments. It offers robust cooling power and features smart controls through LG ThinQ technology, compatible with Amazon Alexa and Google Assistant, allowing remote operation. The unit has a cooling capacity of 24,500 BTUs and an Energy Efficiency Ratio (EER) of 10.3, which is decent but not the highest in energy efficiency.

This air conditioner operates at a relatively low noise level of 50 dB on low settings, though it can reach up to 61 dB under some conditions, which may still be noticeable in quieter environments. It includes three cooling and fan speeds and a dehumidification function that can remove up to 1.8 pints of moisture per hour, enhancing comfort further. Additional features include a user-friendly digital control panel, a timer, a filter check reminder light, and a power failure auto restart. The installation kit and remote control are included, but note that the unit is quite heavy at 132 pounds, which may pose challenges during installation.

The lack of Energy Star certification may be disappointing for those seeking maximum energy savings. Nonetheless, the convenience of smart features and the strong cooling capacity make this air conditioner a solid choice for larger spaces. The 24-hour timer and the filter check reminder add extra ease of use.

The Amazon Basics 5000-BTU Window Air Conditioner is designed for small rooms up to 150 square feet, making it a good choice for bedrooms, home offices, or compact living areas. Its 5000 BTU cooling capacity is sufficient for these spaces, offering cool air without overloading your electricity use. With an Energy Efficiency Ratio (EER) reflected by its SEER of 14, it provides decent efficiency to help keep energy costs reasonable. Noise level at 56 dB is relatively quiet for an air conditioner, so it won't disturb sleep or work much, though it’s not the absolute quietest model available. Installation is straightforward for anyone with basic DIY skills—it fits standard windows (23 to 36 inches wide) and comes with an adjustable kit, but you’ll need a screwdriver on hand. The unit is compact and lightweight enough to handle without too much trouble.

Additional features include a washable filter that traps dust and allergens, helping improve air quality, plus customizable comfort settings like 7 temperature options, 2 fan speeds, and direction control to tailor airflow. It also offers a fan-only mode and a dehumidifying function, adding versatility beyond just cooling. However, this AC is best suited for small spaces and might struggle to cool larger rooms effectively. Also, mechanical controls might feel less modern compared to digital interfaces.

This model is a practical, affordable option if you want a simple, effective air conditioner for a small room without advanced smart features.

The LG 12,000 BTU Window Air Conditioner is a solid choice for cooling medium to large rooms, covering up to 550 square feet efficiently. Its cooling capacity fits well with typical home spaces like living rooms or bigger bedrooms. With an Energy Efficiency Ratio (EER) reflected by a Seasonal Energy Efficiency Ratio (SEER) of 11.4, it offers decent energy savings, helping keep electricity bills reasonable. The noise level at 53 decibels is relatively quiet for a window unit, so it won’t be too disruptive in daily use.

Installation is designed to be user-friendly with the included EZ Mount kit, fitting double-hung windows between 27 and 39 inches wide, and it comes with helpful accessories for easy setup and secure mounting. The removable, washable dust filter is a practical feature, making maintenance simple and helping the unit run efficiently without buildup. Additionally, smart features like WiFi control via the LG ThinQ app and voice commands through Google Assistant or Amazon Alexa add convenience, allowing you to adjust settings remotely. The unit also includes a remote control and offers a dehumidifier function, which can improve comfort by reducing humidity.

The 1-year warranty is fairly standard, and the unit weighs about 82 pounds, which means it might be a bit heavy for some to install alone. The cooling power and smart features stand out, though the noise level, while low for this type of product, may still be noticeable to very sensitive ears. This LG model is well-suited for those wanting a powerful, smart window AC with easy maintenance and installation, but if you prioritize ultra-quiet operation or longer warranty coverage, other options might be worth considering.