Best Through-the-Wall Air Conditioners of 2026

The Keystone Wall AC offers a powerful 12,000 BTU cooling capacity, making it ideal for keeping small to medium rooms up to 550 square feet comfortable during hot days. It also includes a supplemental heating feature that provides extra warmth when outdoor temperatures are between 23 and 76 degrees, perfect for mild chilly days. This unit saves space by mounting on your wall, so you don’t lose window views or floor area, and it comes with an easy-to-install interior trim kit. Plus, the smart remote control reads the room temperature and adjusts settings every few minutes, ensuring your space stays just right without constant manual adjustments.

The Amana 15,000 BTU PTAC offers strong heating and cooling capabilities, making it easy to maintain a comfortable temperature year-round. With its efficient R32 refrigerant, it uses less energy and is better for the environment, helping you save on electricity bills while reducing your carbon footprint. You’ll appreciate the user-friendly controls, including multiple fan speeds and temperature display options, allowing you to customize your comfort. Plus, its durable design with washable filters and freeze protection means less maintenance and reliable performance over time.

The LG air conditioner is a powerful and energy-efficient cooling solution that can cool up to 440 sq. ft. Its universal design fits most sleeves and it comes with a remote control and installation kit. The LED display and simple selection control panel allow for easy operation, and the full-featured remote lets you adjust temperature and fan speed from a distance.

The PeacefulHues Mini Split AC offers versatile climate control with cooling, heating, dehumidifying, and fan modes, making it ideal for keeping your space comfortable year-round. Its turbo mode quickly adjusts the temperature in rooms up to 750 sq ft, while the Eco mode helps you save energy by reducing consumption by up to 30%. You'll appreciate the quiet operation, especially in sleep mode, which keeps noise levels low for undisturbed rest. The unit is designed to handle extreme temperatures, performing reliably from freezing cold to hot summer days. Its sleek wall-mounted design saves floor space and fits seamlessly with your home décor.

The Awoco 36" Air Curtain creates a high-speed air stream over the entrance to isolate the interior and exterior air environment while blocking 90% of hot or cold air, dust, and smoke. It comes with a free optional door switch to automatically turn on the air curtain when the door is open, and it has two-speed options, 1177 CFM high speed and 942 CFM low speed, with less power consumption than other industrial air curtains. The unit is easy to install and has a fireproof and anti-erosive powder-coated metal case that is easy to clean.

The ROVSUN Smart Wall AC offers a versatile climate solution with powerful cooling and heating capabilities, making it perfect for rooms up to 550 square feet. You can easily switch between five modes and three fan speeds to find your ideal comfort level throughout the year. The unit includes a 24-hour timer and an energy-saving ECO mode, helping you save on electricity bills. Plus, its washable front filter is simple to clean, ensuring your AC runs efficiently. Installation is straightforward with a detailed manual and included trim kit, making it a convenient choice for your home or office.

The Cooper & Hunter PTAC Unit is a versatile all-in-one air conditioner and heat pump that also includes a 3.5kW electric heater, giving you reliable comfort all year round. It’s designed with standard dimensions, making it easy to fit in various spaces like homes, offices, hotels, and apartments. This unit runs quietly, so you won’t be disturbed while it keeps your space comfortable. Operating on 230/208V power and using eco-friendly R-32 refrigerant, it offers strong cooling and heating performance. You can easily control it with the built-in digital panel, remote, or your smartphone for added convenience.

The OLMO 9,000 BTU PTAC offers both heating and cooling, making it ideal for your home, office, or hotel room. It includes a 3.5 kW electric heater, so you can stay warm during colder months without needing a separate unit. Designed to work with 230/208V power and the eco-friendly R-32 refrigerant, it helps you save energy while keeping the air comfortable. You can easily control the temperature using the digital panel with LED display, the included remote, or even your smartphone if you have the wireless kit, giving you flexible and convenient options to manage your climate.

The Klimaire PTAC Heat Pump offers a seamless replacement for your existing air conditioning system. Its design ensures compatibility with standard wall sleeves, making installation straightforward. With an impressive cooling capacity of 12,000 BTU and a heating capacity of 10,800 BTU, it efficiently regulates your indoor climate. The unit also features a backup electric heater for added warmth during colder months. For those who prefer modern convenience, the Wi-Fi option allows you to control the unit from your smartphone, giving you flexibility and comfort at your fingertips.

The Cooper&Hunter 15,000 BTU PTAC Packaged Terminal Air Conditioner is a high-efficiency air conditioner with a heat pump and electric cord. It is perfect for residential, commercial, and hotel use, and comes pre-charged with R-410A refrigerant. It has a 7-year limited warranty on the compressor and a 5-year limited warranty on parts. Customers have praised its quiet operation and quick cooling, though some have reported leaking issues.