10 Best Thru The Wall Ac With Heat 2026 in the United States

The LG 9,800 BTU through-the-wall air conditioner with supplemental heat is designed for medium-sized rooms up to about 440 square feet, making it suitable for bedrooms or offices. It offers both cooling and heating functions, which is helpful for year-round comfort without needing separate units. The cooling capacity is around 10,000 BTUs, which aligns well with the room size it’s intended for. Heating is supplemental, meaning it can provide warmth but may not replace a full heating system in very cold climates.

The energy efficiency rating, at a SEER of 9.8, is average compared to newer models, so it provides decent but not the most energy-saving performance available. Noise level at 54 decibels is moderate; it won’t be completely silent but should be reasonably quiet for bedroom use. Installation requires a dedicated wall space and 230V power, which might need professional help if you’re not familiar with electrical work. Extra features like multiple fan speeds, 4-way air deflection, a remote control, filter reminder, and washable filter add convenience and flexibility. It also has an auto-restart after power outages, which is useful for continuous comfort.

The unit is not Energy Star certified, so energy costs could be higher than more efficient units. It is somewhat bulky and heavy, which could make installation a bit challenging. For those seeking a simple, dual-purpose wall unit for moderate room sizes and who accept average energy efficiency, this LG model is a solid option. However, if you prioritize very quiet operation or higher energy savings, exploring other models may be beneficial.

The Keystone 10,000 BTU wall-mounted air conditioner with supplemental heat is a solid choice for cooling and adding some warmth to small to medium rooms up to about 450 square feet. Its cooling capacity of 10,000 BTUs and supplemental heating at 10,600 BTUs can keep you comfortable throughout much of the year, though the heating function is designed to assist rather than fully replace your main heating. With a SEER rating of 9.6, it offers reasonable energy efficiency, and the Energy Saver and Sleep modes help lower power use, which is great for managing electric bills.

Installation is straightforward with the included universal interior trim kit, and because it's installed through the wall, it saves window space and keeps your view clear. Noise level is moderate at 58 decibels, so it won’t be completely silent but should be acceptable for most living areas. Extra features like the remote control with room temperature display, dehumidifier function removing 2.3 pints per hour, and a filter light reminder add convenience.

On the downside, the unit is somewhat bulky and heavy, weighing nearly 74 pounds, which might require professional installation. Also, the heating mode only works efficiently when outside temperatures are between 23 and 76 degrees Fahrenheit, so it’s not suitable as a primary heater in colder climates. If you want a dependable wall AC that also provides some supplemental heat and dehumidification without taking up window space, this Keystone model fits well, especially for milder climates and moderate-sized rooms.

The LG 9,800 BTU Through the Wall Air Conditioner is designed for cooling spaces up to 440 sq. ft., making it suitable for bedrooms, living rooms, and medium-sized apartments. It boasts an Energy Efficiency Ratio (EER) of 10.7, which means it's relatively efficient in terms of energy consumption. However, it does not have an Energy Star rating, which might be a consideration for those focused on energy savings.

The unit uses R-32 refrigerant, known for its efficiency and lower environmental impact. Installation is specific to through-the-wall setups and requires a 230V plug, which may necessitate an electrician for proper installation if your home isn't already equipped with this outlet type. The cooling capacity of 9,800 BTUs is complemented by the heating capability, though the specific BTU rating for heating isn't provided. It has a noise level of 56 dB, which is moderate but might be noticeable in a quiet room.

Additional features include three cooling and fan speeds, a remote control, pre-programmed modes, and a four-way air deflection system for better airflow distribution. The Energy Saver mode helps maintain temperature efficiently, and the Dry mode dehumidifies the room by removing up to 2.9 pints of moisture per hour. Accessories such as a trim kit, mesh grille, washable filter, and insulation foam make installation and maintenance straightforward. The unit is relatively heavy at 77 pounds and has dimensions that should be checked against your wall space.