10 Best Thru Wall Ac Units 2025 in the United States

The Keystone 10,000 BTU Through the Wall Air Conditioner is designed for those seeking a reliable cooling solution for small to medium spaces up to 450 square feet. With a cooling power of 10,000 BTUs, it efficiently manages indoor temperatures and doubles as a dehumidifier, removing about 2.3 pints of moisture per hour. Its energy efficiency is supported by an EER, though not Energy Star certified, it offers energy-saving modes like 'Energy Saver' and 'Sleep' to help minimize electricity costs.

Installation is straightforward with a universal trim kit, making it a good choice for maintaining window views and floor space. The included remote control, which measures room temperature and adjusts accordingly, adds a layer of convenience, particularly with its programmable timer and adjustable air louvers. However, at 57.4 dB, its noise level might be noticeable, especially in quieter settings like bedrooms or nurseries.

The Keystone 10,000 BTU AC unit is suitable for those prioritizing effective cooling with added dehumidification in a through-wall installation, making it ideal for apartments or small homes. Its user-friendly features make it accessible, though potential buyers should weigh its noise level and energy efficiency against their personal needs. The durable build and 5-year warranty (1 year for parts and labor, plus 4 additional years for the sealed system) provide peace of mind. However, the substantial weight of 68.2 pounds could be a consideration during installation or if moving the unit is necessary.

The Keystone 18,800 BTU Window-Wall Air Conditioner is a versatile unit that combines cooling, supplemental heating, dehumidification, and fan circulation, making it suitable for large rooms up to 1,000 square feet. With a cooling capacity of 18,800 BTUs and a supplemental heating capacity of 16,000 BTUs, it can provide comfort year-round. The unit includes a smart remote with an LCD screen that helps maintain the desired room temperature by sending signals to the air conditioner every three minutes. It offers energy-saving modes like 'Energy Saver' and 'Sleep' to help reduce electricity bills, although its SEER rating of 10.7 is relatively average, and it is not Energy Star certified.

The noise level is 55 dB, which is moderate and may not be the quietest option available but should be manageable for most users. Installation is straightforward with the included window installation kit, and the space-saving design helps free up floor space. Additional features include a filter light reminder and a 4-way swing for better air distribution. However, it weighs 117.3 pounds, making it quite heavy and potentially challenging to install without assistance.

While it performs well in cooling and supplemental heating, it’s important to note that the heating function is not meant to replace a primary heat source, especially in extremely cold conditions. The product comes with a 1-year parts and labor warranty and an additional 4-year warranty for the sealed system, providing some peace of mind regarding durability.

The Keystone 14,000 BTU Wall Mounted Air Conditioner is a solid choice for cooling large spaces up to 700 sq. ft. It's versatile, offering not just cooling but also supplemental heating, a dehumidifier function, and fan circulation, making it suitable for year-round use. The 14,000 BTU cooling capacity is powerful, and the 10,600 BTU heating capacity is useful during cooler months, though it's meant as a supplementary heat source, not a primary one. The unit operates best when outside temperatures range between 23 and 76 degrees for heating functions.

It includes a smart remote control that provides convenient temperature monitoring and adjustment, enhancing user comfort. Additionally, modes like 'Energy Saver' and 'Sleep' help reduce electricity consumption, easing your energy bills. However, its Seasonal Energy Efficiency Ratio (SEER) of 9.3 indicates it’s not the most energy-efficient option on the market, and it doesn’t have Energy Star certification. The noise level at 61.5 dB is moderate; not extremely quiet but not excessively loud either.

Installation requires a special 230-volt/20-amp electrical outlet, which might be a consideration if your home isn’t already equipped with one. The unit’s design is space-saving, keeping your windows free, and it comes with a trim kit for easy installation. With a 1-year warranty on parts and labor and an additional 4 years for the sealed system, the product offers a decent assurance of durability. If you need a powerful, multifunctional thru-wall unit and can accommodate its installation requirements, this Keystone model is worth considering.