10 Best 12000 BTU AC Window Units 2025 in the United States

The Midea MAW12HV1CWT EasyCool Smart Inverter Air Conditioner Window Unit offers 12,000 BTUs of cooling power, making it suitable for large rooms up to 550 square feet. Its multi-season functionality is a standout, providing both cooling and supplemental heat, though the heat pump function does not work below 41°F. This unit is energy-efficient with a Seasonal Energy Efficiency Ratio (SEER) of 13.3 and is Energy Star certified, promising up to 35% energy savings.

The noise level is notably low at 58 dB, which allows for quiet operation, perfect for bedrooms or home offices. Installation is straightforward for double-hung windows with specific dimensions, and the unit comes with a complete installation kit, remote control, and user manual. The LED display and multiple control options, including a SmartHome App and voice control via Alexa and Google Assistant, add convenience.

At 58 pounds, it is relatively heavy and may require assistance for installation. The washable filter is easily accessible, aiding in maintenance. Potential buyers should be aware of its weight and the limitation of the heat pump function in colder temperatures.

The Midea MAW12V1QWT is a 12,000 BTU window air conditioner designed for cooling spaces up to about 550 square feet. Its standout feature is the unique U-shaped design that allows your window to stay partially open, helping with fresh air and preserving your view. This design also cleverly blocks outside noise, resulting in a very quiet operation at just 32 decibels—much quieter than many traditional window units.

Energy efficiency is a strong point here, thanks to advanced DC inverter technology that saves over 35% energy compared to similar models and has earned an ENERGY STAR certification. The unit has a good Seasonal Energy Efficiency Ratio (SEER) of 15, making it cost-effective to run. A 5-star BEE rating further confirms its energy savings. Installation is user-friendly with a quick-snap bracket system suitable for single or double-hung windows between 22 and 36 inches wide. At about 59 pounds, it’s moderately heavy, so having help during installation is a good idea. The unit includes a dust filter and dehumidifier function, improving air quality and comfort.

Smart features add convenience: Wi-Fi capability allows you to control the AC remotely via an app, and it works with Alexa and Google Assistant for voice control. It also has an electronic control panel and a clean filter indicator for easy maintenance. The unit requires a standard 115-volt outlet and uses a corded power source, which may limit placement options. Its plastic build is typical but might not be as durable as metal alternatives. This AC is a solid choice for anyone looking for a quiet, energy-saving, and smart-controlled window unit, especially if you appreciate an innovative design that blends functionality with fresh air and noise reduction.

The LG 12,000 BTU Smart Window Air Conditioner is designed for medium-sized rooms up to 550 square feet, making it a good choice if you need effective cooling in a space like a living room or large bedroom. Its cooling capacity is solid for this room size, and the supplemental heating feature adds versatility, allowing you to warm your room during cooler seasons without a separate heater. The air conditioner operates at 54 decibels, which is average noise for window units—noticeable but not overly loud for most users. It includes two cooling, heating, and fan speeds, giving some flexibility to adjust comfort levels. The device supports easy installation with the provided window kit and remote control.

One of its standout features is smart connectivity via LG ThinQ, Amazon Alexa, and Google Assistant, so you can control the unit remotely or with voice commands—handy if you like tech convenience. However, its energy efficiency rating (SEER of 11.2 and a 1-star BEE rating) suggests it won't be the most energy-saving option available, which could affect electricity bills with frequent use. The unit is quite heavy at 89 pounds, so installation might require two people. Additionally, it has a dust filter with a reminder light, helping maintain air quality and clean operation.

This LG model suits buyers looking for smart features and both cooling and heating in a window unit, though if energy efficiency or very quiet operation is a priority, there are other models to consider.