Best 12000 BTU Window Air Conditioners of 2026

The Keystone AC & Heater is a versatile unit designed to keep your living space comfortable year-round. With its robust 12,000 BTU cooling capacity and 11,000 BTU supplemental heating, you can efficiently manage temperatures in medium-sized rooms up to 550 square feet. The smart remote control provides real-time temperature readings, ensuring your environment is just right. Additionally, the Energy Saver and Sleep modes help reduce energy costs, making it budget-friendly. Installation is a breeze with the included window kit, allowing you to save valuable floor space while enjoying optimal comfort.

The LG Window AC with Heat offers quiet operation, running at noise levels as low as 50dB, so you can enjoy a peaceful environment without distractions. It includes a supplemental heat feature, which is perfect for adding extra warmth on chilly days, helping you stay comfortable year-round. You can choose from two different cooling, heating, and fan speeds, giving you control to tailor the temperature and airflow to your liking. Plus, the auto restart function means after a power outage, the unit will automatically turn back on when power returns, saving you the hassle of resetting it.

The GE 12000 BTU AC is perfect for cooling medium to large rooms up to 550 square feet, making it a great choice for living or family rooms. It comes with an easy install kit, so you can set it up quickly without hassle. You can control the unit remotely using the SmartHQ app, compatible with Alexa and Google Assistant, giving you flexible and convenient operation from anywhere. The Eco Mode helps save energy by turning off the fan and compressor when the room reaches your desired temperature, helping you reduce electricity costs while enjoying a comfortable environment.