10 Best Room Air Conditioners 2025 in the United States

The Midea 8,000 BTU U Shaped Smart Inverter Window Air Conditioner is designed to cool spaces up to 350 sq. ft., making it suitable for rooms or small apartments. One of its standout features is its ultra-quiet operation, with noise levels as low as 42 dB, which is significantly quieter than many traditional units. This makes it an excellent choice for those who prioritize a peaceful environment.

Additionally, the U-shaped design not only minimizes noise but also allows for flexible window opening, which can be useful for ventilation and maintaining a view. Installation is straightforward with the included quick-snap bracket, and it fits a variety of window sizes (22"-36" width and at least 13.75" height). Energy efficiency is another strong point, with the DC Inverter technology providing over 35% energy savings and earning it the ENERGY STAR Most Efficient Certification. The smart control feature allows for easy operation via the SmartHome app and compatibility with Alexa and Google Assistant adds convenience.

However, the unit's weight (55.6 pounds) might make installation challenging for some users. Furthermore, while the energy efficiency and smart features are impressive, potential buyers should consider the higher initial cost compared to basic models. The noise level, although low, may still be noticeable in very quiet settings. Despite these minor drawbacks, the Midea U-shaped Smart Inverter AC offers a blend of advanced features, energy savings, and quiet operation, making it a strong candidate for those looking to cool a mid-sized room efficiently and quietly.

The Senville LETO Series Mini Split Air Conditioner Heat Pump stands out with its impressive 12000 BTU cooling capacity, making it suitable for cooling larger rooms or spaces. Its SEER2 rating of 20.8 indicates high energy efficiency, helping to reduce electricity bills. The integration with Alexa offers convenient smart features, allowing for voice control and remote operation, which is a major plus for tech-savvy users or those seeking modern conveniences.

Additionally, the unit functions as a versatile 4-in-1 system, including air conditioning, heating, dehumidifying, and fan modes, catering to various needs throughout the year. The inverter technology further enhances efficiency and performance, while the installation package includes all necessary components for setup, although professional installation is required. The 5-year warranty on parts and the compressor adds value by providing long-term reliability and support.

However, the unit's noise level is not specified, which may be a consideration for those sensitive to sound. It's also worth noting that the product is not Energy Star compliant, which might be a drawback for those looking for certified energy-saving options. Despite these minor drawbacks, the Senville LETO Series offers a stylish and functional solution for both residential and commercial settings, combining performance with aesthetic appeal.

The BLACK+DECKER Smart Portable Air Conditioner with Heat offers a versatile solution for year-round comfort. It boasts a cooling capacity of 14,000 BTU (ASHRAE) and 10,000 BTU (DOE), which is suitable for rooms up to 700 sq. ft. This makes it a solid choice if you need to cool a large space. Additionally, it provides 12,000 BTU heating, making it useful in winter as well. The unit features a 6.2 SEER rating, which is not very high, meaning it is not the most energy-efficient option available.

Its noise level is 54 dB, which is relatively moderate and should not be overly disruptive in most settings. As a portable unit, it offers flexibility in placement, which is convenient if you need to move it between rooms. Installation is simplified with the included window kit and vented airflow outlet. Smart features like Wi-Fi connectivity, mobile app control, and compatibility with Amazon Alexa and Google Assistant add a modern touch to this device, making it easy to control remotely.

The 'Follow Me' remote option, which uses the remote as a thermostat, allows for more precise temperature control. However, it is worth noting that this model is not Energy Star rated, which might be a consideration if energy efficiency is a priority for you. The unit also functions as a dehumidifier and fan, adding to its versatility. It is a well-rounded air conditioner with some notable smart features, though its energy efficiency could be better.