10 Best Window Ac Unit For Large Room 2026 in the United States

The LG 23,000 BTU Window Air Conditioner with Heat is designed for large rooms up to 1,400 square feet, making it a solid choice for living rooms, dens, bedrooms, or offices. Its cooling capacity is strong enough to handle medium to large spaces, which is important if you want effective temperature control without multiple units. The unit operates quietly at around 50-51 dB on low settings, so it’s less likely to disturb your work or sleep compared to louder models. It also includes a heating function, which is handy for cooler days, allowing you to use one device year-round for both cooling and heating. An auto-restart feature is practical if you experience power outages, as it resumes operation automatically.

The unit has multiple fan speeds to customize airflow, and extra features like a dehumidifier and filter light reminder help maintain air quality and simplify maintenance. Installation is typical for window units and the size is average, so it should fit most standard windows but requires a 230V power supply, which might need verification in your home. The energy efficiency ratio (SEER) is 11.3, which is decent but not the highest—meaning it’s effective but not the most energy-saving option on the market. Weighing 145 pounds, it is fairly heavy, so installation might require some assistance. The 1-year warranty covers parts and labor, which is standard.

This LG model suits those who want a reliable, quiet unit that handles both heating and cooling in larger rooms, with convenient remote control and solid coverage, although it is not the cheapest option and may have a higher upfront cost than smaller units.

The LG LW1823HRSM is a strong choice for cooling larger rooms up to 1000 square feet, thanks to its solid 18,000 BTU cooling capacity. It also doubles as a heater, which adds useful year-round comfort. With an Energy Efficiency Ratio (EER) reflected by a Seasonal Energy Efficiency Ratio (SEER) of 11.1, it provides decent energy savings, though it’s not the highest-rated model available. Noise-wise, it runs at about 57 decibels, which is noticeable but not overly loud for most living spaces.

The unit is fairly sizable at 30.5" x 25.5" x 16.8", so make sure your window can accommodate it comfortably. Installation is typical for a window AC, and it includes extras like window curtain panels to help seal the unit. One of its standout features is LG ThinQ smart technology, allowing you to control the AC remotely via a smartphone app or voice commands with Alexa or Google Assistant, which is great for convenience. It also offers multiple fan speeds and a 24-hour timer for customizable comfort. The auto-restart function is handy in case of power outages. However, the unit weighs 132 pounds, making it somewhat heavy to install or move.

The one-year warranty provides basic coverage but may be limited for some users. This LG model suits those who want reliable cooling and heating for large rooms with smart features, while users who prioritize the quietest operation or highest energy efficiency might consider other options.

The LG 12,000 BTU Window Air Conditioner is designed for cooling large rooms up to 550 square feet, making it a suitable choice for bedrooms, living rooms, or apartments. One of its standout features is its quiet operation, with noise levels as low as 52 dB, which is ideal for creating a peaceful environment. The unit offers three cooling and fan speeds, along with an Auto Cool feature for customizable comfort.

Its digital control panel and remote control enhance usability, and the 4-way air deflection ensures flexible air direction. Additionally, the unit includes a 24-hour timer for energy savings and convenience. Installation is made easier with the included window installation kit, and maintenance is straightforward with the slide-out, washable filter and filter light reminder.

However, it is important to note that while the unit has a SEER of 13, it is not Energy Star certified, which may affect long-term energy costs compared to more energy-efficient models.