10 Best Lightweight Window Air Conditioner 2025 in the United States

The Midea Duo 14,000 BTU portable air conditioner is a powerful and efficient unit designed to cool spaces up to 550 sq. ft. It boasts an innovative duo hose design, enhancing air circulation and preventing unwanted heat from entering the room. This feature makes it highly effective in maintaining a consistent temperature. Additionally, it's equipped with inverter technology, meaning it uses significantly less electricity, which translates to energy savings of over 40% compared to traditional units. Most users will appreciate this cost efficiency.

The cooling performance is impressive, providing rapid and strong cooling, making it ideal for hot summer days. It's also relatively quiet, with a noise level as low as 42 dB, comparable to the ambiance of a library, making it suitable for bedrooms and living areas without causing much disturbance. Another convenient feature is its smart Wi-Fi capability, allowing control via smartphone apps or voice commands with Alexa and Google Assistant. This adds a layer of ease for tech enthusiasts.

On the downside, the unit's dimensions (16.73”D x 19.53”W x 34.48”H) and weight might make it slightly cumbersome for some users to move around. Also, while it has a decent SEER of 12.3, it's worth noting that there are more energy-efficient models available if that is a top priority. Despite these minor drawbacks, the Midea Duo stands out for its advanced cooling technology, quiet operation, and smart features, making it a solid choice for anyone needing a portable air conditioner with modern conveniences.

The LG 10,000 BTU Smart Window Air Conditioner is designed to cool rooms up to around 400-450 square feet, making it a solid choice for medium-sized bedrooms, living rooms, or apartments. Its Dual Inverter technology helps the unit run quietly—down to about 44 decibels in sleep mode—which is great if you want to avoid disruptive noise. LG also highlights energy efficiency; this model exceeds Energy Star requirements by about 25%, which can help save on electricity bills over time.

Weighing 63 pounds and measuring roughly 24.5 x 19.6 x 12.5 inches, it's a bit on the heavier side for a window unit, so installation might require some care or help. The air conditioner includes useful extras such as a dehumidifier, a filter light reminder to maintain air quality, and multiple fan speeds, giving you customizable comfort. Plus, it supports WiFi control through LG ThinQ and works with Alexa and Google Assistant, allowing you to manage settings remotely or by voice—convenient if you already use smart home devices.

While 58 dB is quiet for an air conditioner, it might still be noticeable in very quiet environments. Also, the 1-year warranty is standard but not extensive. This air conditioner is well-suited for those seeking a blend of strong cooling performance, energy savings, and smart features, though it’s a bit heavier and pricier than basic models.

The GE Profile ClearView Inverter Window Air Conditioner is designed for rooms up to about 450 square feet with a cooling capacity of 10,300 BTUs, suitable for medium-sized spaces. Its inverter technology allows it to adjust cooling power smoothly, making it more energy-efficient—about 34% better than traditional units—which can help reduce electricity bills. It also has a good Energy Star rating and a SEER rating of 11.2, emphasizing its focus on saving energy without losing cooling strength.

Noise is a big plus here; this unit operates quietly at around 40 decibels, making it one of the quieter window AC options available. This can be especially helpful in bedrooms or home offices where low noise is important. The design is user-friendly, with a U-shaped adjustable depth that fits windows with different thicknesses and allows you to keep your window’s full view, letting in natural light and fresh air.

Additional features include built-in Wi-Fi for remote control via an app or voice assistants like Alexa and Google Assistant, adding convenience. It also comes with a remote control and filter light reminders for easier maintenance. The unit is relatively heavy at about 76 pounds, which might make installation tricky for some, and its size is a bit deeper than many window ACs, so ensure your window space can accommodate it. This model is a strong pick if you want an energy-efficient, quiet air conditioner with smart features and a flexible fit that doesn't block your window view.