10 Best Smallest Window Unit Air Conditioners 2025 in the United States

The Frigidaire 6,000 BTU window air conditioner is a solid choice for cooling small rooms up to 250 square feet. Its cooling power is well-suited for bedrooms or compact living spaces, providing customizable comfort with three fan speeds and 6-way directional airflow. It runs quietly at about 51 dB, which means it won’t disturb your sleep or activities.

The unit isn’t Energy Star-certified but does include Eco and Sleep modes to help reduce electricity use, though it has a moderate energy efficiency ratio (SEER of 11). Measuring just over 16 inches wide and 13 inches deep, it fits easily in most standard windows without taking up too much space. Installation is straightforward thanks to the included window kit and remote control, making it user-friendly for people who want convenience.

Maintenance is also simple with a washable dust filter and a filter light reminder that tells you when to clean it. Additional features like a 24-hour timer, auto restart after power outages, and Dry Mode to reduce humidity add to its practicality. While the unit weighs around 38 pounds, which might be a bit heavy for some, and lacks advanced smart features or top-tier energy efficiency, it performs well for those needing a reliable, quiet air conditioner for small rooms with easy control and upkeep.

The Midea 5,000 BTU EasyCool Small Window Air Conditioner is a good option for cooling smaller spaces up to 150 sq. ft. It offers a decent cooling capacity with 7 temperature settings and both cooling and fan-only modes, making it versatile for personal comfort. One of its strengths is the energy efficiency, with a CEER of 11.0 helping to lower energy costs.

This unit is also noted for its quiet operation, similar to the noise level of a refrigerator (57 dB), which is suitable for bedrooms or home offices where a quieter environment is preferred. The mechanical controls are straightforward and the air filter is reusable, which adds to the ease of maintenance. Installation is generally straightforward with included mounting accessories, though users might need a screwdriver and potentially drill pilot holes for some window frames.

A one-year warranty provides some peace of mind for buyers. However, the unit weighs 35.3 pounds, which might be a bit heavy for some users to manage alone during installation. Also, while it's designed for smaller rooms, it may not be as effective in larger or more heat-exposed areas. Given its reasonable price, this Midea air conditioner is a solid choice for those needing an affordable and efficient solution for small spaces.

The GE Window Air Conditioner Unit provides 5,000 BTUs of cooling power, making it suitable for small rooms up to 150 square feet. This unit is ideal for bedrooms, small apartments, guest rooms, and home offices. It operates at a noise level of 56 dB, which is fairly quiet and suitable for nighttime use. The unit measures 15 x 16.44 x 12.56 inches and comes with an easy install kit for double-hung windows of specific dimensions.

It's also straightforward in terms of maintenance, featuring a washable filter that should be cleaned every 30 days to ensure optimal performance. The manual controls offer two cooling modes and two fan speeds, allowing for flexible temperature adjustments. However, the energy efficiency ratio (EER) is somewhat low at 2.6, which means it may not be the most energy-efficient option on the market. Additionally, the unit's energy star rating is just 1 star, indicating it might not be the best choice for those particularly concerned about energy consumption.

Weighing 36 pounds, the unit is manageable for most people to install. This air conditioner is best suited for individuals looking for a budget-friendly and easy-to-install solution to cool small spaces without needing advanced technological features.