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.

Installation is straightforward with a universal interior trim kit, saving window space and preserving views, but it requires a proper wall setup and 230V power, so professional installation might be necessary. The included remote control is a nice convenience, featuring a temperature sensor and programmable timer for easy operation. It also has a filter light reminder to help maintain the unit.

The unit is relatively heavy at 78 pounds, which may make installation a bit challenging without assistance. It also lacks a formal energy star rating and is limited to cooling only, with no heating function. For those seeking a dedicated through-the-wall AC unit with reliable cooling, moderate energy use, and useful extras like dehumidification and remote control, this Keystone model is a practical choice—especially if your space matches its coverage and you don’t mind arranging for installation.

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.

The Energy Efficiency Ratio (EER) is 9.8, which is average but it does not have Energy Star certification, meaning it might use more electricity compared to more efficient models. The included remote control and easy-to-use digital panel make operation convenient, and features like auto-restart after power outage and a washable filter add to ease of maintenance. Due to the unit’s size and weight (about 70 pounds), installation isn’t a quick DIY job. It also lacks advanced energy-saving features found in newer models. If you want an all-in-one wall unit that cools and heats moderately sized rooms and accept moderate energy performance, this LG model presents a practical option.

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.

This unit operates at 115 volts and requires through-the-wall installation, not suitable for window mounting, so ensure your space can accommodate this setup. Installation aids like a plastic trim kit and foam insulation are included, which can simplify the process somewhat. At 56 dB, the noise level is moderate, which might be noticeable but generally acceptable for residential use.

Its remote control and multiple cooling speeds add convenience and customization to its use. Additional features like a filter light reminder and dehumidifier function enhance its value. However, the absence of an Energy Star rating might be a drawback for those prioritizing top-tier energy savings. Additionally, while the remote control is convenient, the unit does not include batteries, requiring an extra purchase. This AC unit is relatively heavy at 66 pounds, which could complicate installation for some users. If you're looking for an efficient and practical solution for cooling a specific room without needing a window installation, this LG unit is worth considering.