10 Best Energy Efficient Window Air Conditioners 2025 in the United States

The Midea MAW12V1QWT U-Shaped Window Air Conditioner stands out for its energy-saving capabilities, boasting over 35% savings thanks to advanced DC inverter technology and a strong 5-star energy rating. With a cooling capacity of 12,000 BTUs, it effectively cools rooms up to about 550 square feet, making it a solid choice for medium-sized spaces. One of its most notable features is the ultra-quiet operation at just 32 decibels, which is much quieter than typical window ACs, ensuring minimal noise disturbance.

The unique U-shaped design is clever, as it allows you to keep your window partially open for fresh air and a better view, while also including an anti-theft lock for safety. Smart controls are another plus, allowing remote adjustments through a phone app or voice assistants like Alexa and Google Assistant, adding convenience for modern users. Installation is straightforward with a quick-snap bracket, suitable for most single or double-hung windows between 22 and 36 inches wide. The unit includes a dust filter with a clean filter indicator to help maintain air quality.

While the unit is efficient and packed with features, it weighs nearly 59 pounds, which might be a bit heavy for some users to handle during installation. Also, the warranty is limited to two years, shorter than some competitors offer. This Midea model is well suited for those wanting an energy-efficient, quiet, and smart window AC with easy installation and a fresh-air friendly design.

The Midea 12,000 BTU Smart Inverter Air Conditioner is a solid choice if you need to cool or heat a room up to about 550 square feet. It offers multi-season comfort by providing both cooling and supplemental heat, though the heat feature won’t work when it’s very cold outside (below 41°F). It stands out for its energy efficiency with an Energy Star rating and inverter technology that can save up to 35% on electricity compared to standard models, which helps lower your energy bills. The unit is fairly quiet at around 45 to 58 dB, meaning it won’t be too disruptive whether you’re working, watching TV, or sleeping.

You’ll find it easy to operate thanks to its electronic controls, remote control, and smart features that let you adjust settings from an app or with voice commands via Alexa or Google Assistant. The 24-hour timer and multiple modes (heat, cool, dry, fan) add flexibility for different needs. Maintenance is straightforward with a washable front panel filter, helping keep the air clean and the unit running efficiently. Installation fits standard double-hung windows between 24 and 38.5 inches wide, and the unit’s size is typical for this power level.

A potential drawback is that the noise level can reach up to 58 dB on higher settings, which might be noticeable in very quiet spaces. The heat function has limitations in colder climates, and the unit weighs 58 pounds, so installation may require some effort. Priced competitively, the advanced features and energy savings make this unit an excellent option for those seeking reliable, year-round climate control with smart convenience.

The Midea MAW06R1CWT EasyCool is a versatile window air conditioner that offers cooling, air circulation, and dehumidification for spaces up to 250 sq ft. It features a cooling power of 6,000 BTUs, making it suitable for small to medium-sized rooms. With a Seasonal Energy Efficiency Ratio (SEER) of 12.1, it is reasonably energy-efficient, although it does not carry an Energy Star certification. The unit operates quietly at 52 dB in low mode, which is ideal for maintaining a peaceful environment.

The programmable thermostat and remote control enable convenient adjustments, and the Eco mode and EasyTimer feature help optimize energy usage. The reusable filter is easy to maintain, ensuring clean air circulation. Installation is straightforward with all necessary accessories included, though a screwdriver is required. The product dimensions and weight are manageable, fitting well into standard window frames.

While it lacks advanced smart features, it offers solid performance with a focus on energy efficiency and user comfort. The Midea MAW06R1CWT EasyCool is particularly suitable for those seeking an affordable, easy-to-use window air conditioner with decent energy-saving capabilities.