10 Best Window Units 2025 in the United States

The Amazon Basics 6000 BTU Window Air Conditioner is a solid choice for cooling rooms up to 250 square feet, making it suitable for bedrooms, home offices, or small to medium living areas. Its dual functionality for cooling and fan-only modes provides flexible comfort options. With a 12.1 SEER rating, it is energy efficient without being a drain on your electricity bill.

The unit operates at a relatively quiet noise level of up to 56 dB, ensuring a peaceful environment for sleep or work. Installation is straightforward with an adjustable window kit and expandable side panels, fitting standard windows 23 to 36 inches wide and a minimum of 13 inches high. However, it is important to note that basic tools like a screwdriver are required for installation, which is not included in the package.

The air conditioner's washable filter is a convenient feature for easy maintenance, helping to capture dust and allergens efficiently. Manual controls allow for precise temperature settings and airflow direction, but some users might miss the convenience of a remote control or digital interface. Despite its basic design, this window unit is a good option for those seeking an affordable and efficient cooling solution without too many bells and whistles.

The Amazon Basics 5000 BTU Small Window Air Conditioner is designed for cooling small spaces up to 150 square feet, making it suitable for bedrooms or home offices. With a modest cooling capacity of 5000 BTUs, it offers adequate cooling for smaller rooms. It features a two-in-one function, serving as both an air conditioner and a fan. This flexibility can be ideal for those seeking a simple, dual-purpose device.

The unit boasts an Energy Efficiency Ratio (EER) that indicates its energy-saving potential, although specifics beyond its SEER of 14 are not highlighted. It's an electrically powered, standalone unit compatible with a standard voltage of 115 volts, which is common and convenient for household use. Noise levels are reasonably low at 56 dB, which is quiet enough to maintain a peaceful environment, making it suitable for use in bedrooms or workspaces. Installation is straightforward with adjustable window fittings and a complete mounting kit included, although some basic tools like a screwdriver will be needed.

Additional features include customizable comfort settings with seven temperature levels, two-speed cooling and fan modes, and a two-way air direction control. The washable filter is a practical touch for easy maintenance, aiding in dust and allergen management. For those needing powerful cooling for larger areas, this unit might not suffice. Its focus on basic cooling needs and straightforward operation could appeal to those looking for simplicity over advanced features. The Amazon Basics unit is a solid choice for budget-conscious buyers seeking a reliable and quiet option for a small space.

The LG 18,000 BTU Heat and Cool Window Air Conditioner is designed to efficiently cool or heat rooms up to 1,000 square feet, making it a solid choice for medium to large spaces. Its strong cooling capacity (18,000 BTUs) ensures that it can handle fairly large rooms without struggling. The unit features a Seasonal Energy Efficiency Ratio (SEER) of 11.1, which indicates decent energy efficiency for its size, helping to keep electricity costs reasonable during use. At 57 dB, the noise level is average for window units—noticeable but not overly disruptive for most daily activities. Installation is fairly straightforward with the included window kit, but keep in mind the unit is quite large and heavy (over 125 pounds), so having help during installation is advisable. The white matte finish is neutral and will fit most window styles. What sets this model apart is its smart technology: it supports WiFi control through LG ThinQ, and you can use Alexa or Google Assistant for voice commands, which is handy if you want to adjust settings without getting up. It also has a supplemental heating feature, allowing it to function year-round, which adds flexibility beyond just summer use.

Additional conveniences include customizable fan speeds, a 24-hour timer, and an auto-restart after power outages, which helps maintain comfort without manual intervention. The unit also alerts you when it’s time to clean the filter, which is a nice maintenance reminder. On the downside, the Energy Efficiency Ratio (EER) isn’t the highest compared to some premium models, so if you prioritize ultra-low energy costs, there might be better options. The noise might be a bit loud if you’re especially sensitive or planning to use it in a bedroom. Also, the 1-year warranty is standard but somewhat limited if you want longer protection. Taking all factors into account, this LG window unit balances strong cooling and heating capacity with smart features and reasonable efficiency, making it a great fit for those wanting versatile and connected climate control for medium to large rooms.