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

The Whirlpool 18,000 BTU window air conditioner is well-suited for cooling large spaces up to 1000 square feet, making it a good choice for big living rooms, apartments, or bedrooms. Its powerful cooling capacity combined with supplemental heating offers versatility, although the heating function is best for mild cold and not as a main heat source during harsh winters. The unit has a decent Energy Efficiency Ratio (SEER 10.7), indicating reasonable energy use compared to similar models. Operating at about 56 decibels, it produces moderate noise—noticeable but generally not disruptive for daily use.

Installation is quite straightforward thanks to the included mounting kit, though a window height of at least 19.5 inches is needed, which might limit placement options. Additional conveniences like a reusable, washable filter help maintain clean air and keep the unit running efficiently. The electronic controls with multiple cooling speeds, eco and sleep modes, and a 24-hour programmable timer allow for personalized comfort and energy savings. A remote control adds convenience for adjusting settings without getting up.

Weighing nearly 109 pounds, it’s somewhat heavy, so assistance during installation is recommended. The one-year warranty is standard, and user reviews suggest the unit generally performs reliably. This Whirlpool model offers a solid balance of performance and convenience for those who want a powerful AC with some heating ability for a large room, though the noise level and size could be considerations depending on your space.

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.

The LG 12,000 BTU window air conditioner is designed to cool medium to large rooms, covering up to 550 square feet, which fits well within the large room category. Its cooling power is strong, making it a good choice if you want efficient temperature control in a sizable space. The unit has a Seasonal Energy Efficiency Ratio (SEER) of 11.4, which means it offers decent energy efficiency, potentially saving on electricity bills compared to less efficient models. Noise level is moderate at 53 decibels—about the sound of a normal conversation—so it won’t be too disruptive in most home settings. Installation is straightforward thanks to the included EZ Mount kit, which supports windows between 27 and 39 inches wide, and the slide-in chassis design makes it easier to set up or remove. Maintenance is simple too, with a washable dust filter and filter alert to keep the unit running smoothly and clean.

Extra features add convenience, such as WiFi control through the LG ThinQ app, compatibility with Google Assistant and Alexa for voice control, and a remote control for easy adjustments. The unit also includes a dehumidifier function and uses eco-friendly R32 refrigerant. On the downside, while the noise level is reasonable, some sensitive users might find it a bit noticeable. The warranty covers only one year, which is shorter than some competitors offer. Also, the size and weight (over 80 pounds) mean it might require two people for installation. This LG air conditioner is a solid choice for those needing reliable cooling in larger rooms with smart features and easy maintenance, though it may not be the quietest or longest-warrantied option available.