10 Best Through Wall Air Conditioning Units 2026 in the United States

The LG 11,800 BTU through-the-wall air conditioner is designed to cool spaces up to about 440 square feet, making it suitable for medium-sized rooms like bedrooms, living rooms, or apartments. Its cooling capacity of 11,800 BTUs (or 0.9 tons) provides solid performance for keeping a typical room comfortable during warm days. With an energy consumption of around 1080 watts and Energy Star certification, this unit offers decent energy efficiency that can help manage electricity costs compared to less efficient models. It operates on a 230/208V power supply, which is common for through-wall units, but users should ensure their home wiring supports this voltage.

The air conditioner includes a remote control and offers three cooling and fan speeds, allowing easy adjustment of airflow and temperature from across the room. Installation requires a compatible wall sleeve, so it is important to verify measurements before purchase to ensure proper fit. A drawback is the limited 90-day warranty, which is shorter than many competitors offer, potentially affecting peace of mind.

This LG unit is well suited for someone needing a reliable, moderately powerful through-the-wall AC with energy efficiency and remote control convenience, though buyers should check installation requirements carefully and consider the short warranty period.

The LG 11,800 BTU through-the-wall air conditioner is designed to cool rooms up to about 530 square feet, making it suitable for medium-sized bedrooms, living rooms, or apartments. Its cooling power is solid for these spaces, and it offers three fan speeds along with three pre-set modes, including an energy saver and dry mode, which help tailor comfort and manage humidity effectively. The unit uses the R-32 refrigerant, known for being energy efficient and environmentally friendlier than older types. Speaking of efficiency, its Energy Efficiency Ratio (EER) of 10.6 is respectable, meaning it can cool your space without driving up electricity costs too much.

Installation-wise, its universal design fits most wall sleeves, and it comes with all necessary accessories like a trim kit and washable filter, making setup straightforward if you have the proper wall cutout (roughly 26" wide by 17" high). Its dimensions (24"W x 20"D x 14.4"H) are typical for through-wall units but might require professional installation if you’re not comfortable with cutting into walls. At 60 decibels, the noise level is moderate—noticeable but not overly disruptive, similar to a normal conversation.

The unit lacks an inverter compressor, which means it operates at a fixed speed and may be less energy-saving over time compared to models with variable speed compressors. The 1-year limited warranty is somewhat standard but shorter than some competitors offer. This LG model is a good option if you need a reliable, moderately quiet through-the-wall AC with decent energy efficiency for a medium-sized room. It balances effective cooling with useful features like remote control and dehumidifying but may not be the best choice if you want the latest energy-saving technology or extended warranty coverage.

The Whirlpool 14,000 BTU through-the-wall air conditioner is a solid choice for cooling rooms up to 700 square feet, making it suitable for apartments, living rooms, or similarly sized spaces. Its cooling power is strong enough to handle warm days, and the supplemental heat feature offers additional comfort during cooler periods, although it's not designed to replace primary heating. The unit operates at 57 decibels, which is moderate noise—noticeable but generally not overly disruptive. It offers good flexibility with 8-way directional louvers and three fan speeds, allowing you to tailor airflow and cooling to your preference.

Energy efficiency is reasonable with a SEER rating of 9.5, and the Eco and Sleep modes help save electricity during use. The dimensions are fairly standard and fit most wall sleeves with widths between 24.5 and 27 inches, which means installation should be straightforward where space is appropriate. A handy remote control and easy-to-clean washable filter add user convenience.

However, the unit lacks an inverter compressor, which means it may use more energy compared to more modern, inverter-based models that adjust cooling power more efficiently. Some users might also find the 57 dB noise level a bit loud for very quiet environments. This air conditioner is well-rounded with useful features like a dehumidifier and timer, making it suitable for those needing reliable cooling with occasional supplemental heat in medium to large rooms, who have a compatible wall sleeve and prioritize straightforward operation and maintenance.