10 Best Inverter Air Conditioners 2025 in the United States

The Midea 12,000 BTU Smart Inverter Air Conditioner is a strong choice for cooling and heating rooms up to about 550 square feet, making it suitable for large bedrooms or living areas. Its inverter technology helps save energy by adjusting cooling power efficiently rather than running at full speed all the time, reflected in its good energy efficiency rating (SEER 13.3). This means it can cool your space quickly while using less electricity, which is great if you want to keep energy bills down.

One of the highlights is its quiet operation, running as low as 45 dBA, which is soft enough to not disturb conversations, work calls, or sleep. It also offers multiple modes and speeds, including heating and dehumidifying, providing year-round comfort beyond just cooling. Being WiFi enabled with smart app and voice control adds convenience, letting you adjust settings remotely. Installation fits common double-hung windows, with an included kit that makes setup easier, although the unit is fairly heavy at 58 pounds, so it might need some help during installation. The noise level listed at 58 dB might be a little higher than the quietest settings but remains reasonable for most homes.

The heating function won’t work when outdoor temperatures drop below 41°F, so it’s not ideal as a sole heat source in colder climates. Regular filter cleaning is necessary to maintain efficiency, which is common but worth noting. Also, while it has many advanced features, users without smart home setups may not use all of them fully. This Midea model is a versatile window unit offering strong cooling, decent heating, energy savings, and quiet operation—ideal for those wanting a smart, efficient air conditioner with extra comfort features for medium to large rooms.

The Midea 8,000 BTU Smart Inverter Window Air Conditioner is a solid choice for cooling and heating rooms up to 350 square feet. Its inverter technology helps it cool efficiently while saving up to 35% energy compared to standard units, which is great if you want to keep electricity bills lower. The unit is Energy Star rated and has a SEER of 14.5, showing it’s energy-conscious. Noise is quite low at 45 dB, so it won’t disturb you during quiet activities or sleep. It offers 5 operation modes including heat, cool, dry, and fan, plus 3 speed settings letting you customize airflow and comfort. The added heat function is handy for chilly days but works best when the outside temperature stays above 41°F.

Smart features like WiFi control, an app, and voice assistant compatibility make it convenient to adjust settings remotely, which is a bonus for modern users. Installation fits typical double-hung windows, and it comes with a remote and installation kit. On the downside, its heating capacity is limited by outdoor temperature, so it may not replace a full heater in very cold climates. Also, while the unit is quiet, some may find 45 dB noticeable if you prefer almost silent operation at night. The washable filter is easy to access, helping maintain performance, but regular cleaning is needed.

This air conditioner suits people seeking an energy-efficient, multi-season window unit with smart controls for medium-sized rooms.

The LG 6,000 BTU window air conditioner is a solid choice if you need to cool a small to medium-sized room, such as a bedroom or office, up to about 250 square feet. Its cooling capacity is suitable for spaces around 10 by 25 feet, giving you reliable comfort without overworking the unit. It runs quietly, especially in its low mode at 52 decibels, which is great if noise is a concern for sleeping or focused work.

The unit offers three fan and cooling speeds, letting you adjust airflow to your liking, and the 2-way air deflection helps spread cool air evenly. It also includes convenient features like a remote control, digital panel, and an auto-restart function that switches the AC back on after power outages. The washable filter and filter reminder add to its easy maintenance. One downside is that it doesn’t have an official BEE star rating, and while the stated Seasonal Energy Efficiency Ratio (SEER) of 11.5 is decent, there might be more energy-efficient options if you prioritize saving on electricity bills.

It's designed as a window unit and requires installation, but comes with a kit and instructions to help with that. At about 40 pounds, it's not too heavy but will need some effort to mount. The one-year warranty covers parts and labor, providing reasonable peace of mind. If you want a quiet, easy-to-use air conditioner for a moderately sized room without advanced smart features, this LG model offers a practical and well-rounded option.