10 Best In Wall Ac Units 2025 in the United States

The Keystone 12,000 BTU Through the Wall Air Conditioner is designed to cool medium-sized rooms up to about 550 square feet, making it a good fit for bedrooms, nurseries, or bathrooms. Its cooling capacity is solid for these spaces, offering three cooling modes and adjustable fan speeds to customize comfort. The built-in dehumidifier removes about 2.5 pints of moisture per hour, which helps improve air quality and comfort levels. Energy efficiency is decent, with a Seasonal Energy Efficiency Ratio (SEER) of 10.5 and features like Energy Saver and Sleep modes that can help reduce electricity costs. The noise level is moderate at around 56.5 decibels—noticeable but not too disruptive, which is reasonable for a through-the-wall unit.

The LG 7,800 BTU Through the Wall Air Conditioner is designed for cooling rooms up to 330 square feet, making it a good choice for bedrooms or offices. Its cooling capacity is sufficient for moderate-sized spaces. The energy efficiency ratio (EER) of 10.7, paired with the use of R-32 refrigerant, makes it a relatively efficient option, although it is not Energy Star rated.

The LG 9,800 BTU through-the-wall air conditioner is a solid choice for cooling medium-sized rooms up to about 440 square feet, such as bedrooms or small offices. Its cooling power is suitable for maintaining a comfortable temperature in that space. A useful bonus is the supplemental heating feature, allowing you to warm the room on cooler days without needing a separate heater. The unit offers two fan speeds for both heating and cooling, giving you some control over airflow to match your comfort preferences. Installation requires a wall opening and a 230V power supply, which is typical for in-wall ACs but might need professional help if you aren't handy. Noise level is around 54 dB, which is moderate—noticeable but not overly loud, so it should be okay for bedrooms.