Choosing the best wall installed air conditioner can significantly improve your indoor comfort by providing efficient cooling without taking up window space. Below is a summary table of top wall and through-the-wall air conditioners selected for their cooling power, features, and ease of installation suitable for various room sizes.
Product | Cooling Capacity | Room Size Coverage | Key Features |
---|---|---|---|
LG 7,800 BTU Through the Wall Air Conditioner | 7,800 BTU | Up to 330 sq. ft. | Energy efficient R-32 refrigerant, 3 cooling speeds, remote control |
BLACK+DECKER 18,000 BTU Window or Through The Wall AC | 18,000 BTU | Up to 1,000 sq. ft. | Remote control, 3 cooling speeds, sleep mode, 24-hour timer |
GE AWCS12WWA Wi-Fi Enabled Window Air Conditioner | 12,000 BTU | Up to 550 sq. ft. | Smart app control, easy install kit, voice assistant compatible |
Portable Wall Mounted Air Conditioner by Vrvttad | N/A | Small spaces | No drilling installation, wireless charging, oscillating fan |
Keystone 18,800 BTU Window-Wall Air Conditioner with Heating | 18,800 BTU Cooling / 16,000 BTU Heating | Up to 1,000 sq. ft. | All-in-one heating and cooling, smart remote, multi-function modes |
LG 7,800 BTU Through the Wall Air Conditioner

The LG 7,800 BTU air conditioning unit is designed for through the wall installations, making it ideal for bedrooms or offices up to 330 square feet. It uses an energy-efficient R-32 refrigerant with a high EER of 10.7, reducing energy consumption while maintaining reliable cooling. Users can select from three cooling speeds and three pre-programmed modes including a turbo fan for quick cooling and an energy saver mode that circulates air while keeping the compressor off. The compact dimensions (24” W x 20.1” D x 14.4” H) allow for seamless wall mounting, and the included remote control adds convenience.
BLACK+DECKER 18,000 BTU Window or Through The Wall Air Conditioner

This high-capacity 18,000 BTU AC unit by BLACK+DECKER cools large rooms or entire living spaces up to 1,000 square feet. It offers four fan levels — auto, low, medium, and high — enabling precise temperature control. The included remote facilitates full operation, featuring sleep mode, energy saver mode, and a 24-hour timer to optimize energy use. Suitable for windows or through-the-wall setups, it stands out with its balance between power and convenience, ideal for whole floors, apartments, or offices.
GE AWCS12WWA Wi-Fi Enabled Window Air Conditioner

The GE AWCS12WWA features a powerful 12,000 BTU cooling capacity, perfect for medium to large rooms up to 550 square feet. It comes with an easy install kit for quick setup. This smart unit supports Wi-Fi connectivity via the SmartHQ app, allowing remote temperature monitoring, scheduling, and operation from anywhere. Additionally, it integrates with Amazon Alexa and Google Assistant for voice control, giving users multiple convenient ways to optimize indoor comfort.
Portable Wall Mounted Air Conditioner by Vrvttad

This compact no-drill portable air conditioner is ideal for kitchens, bedrooms, or offices where wall space is limited. It offers three adjustable speed settings with oscillation and an intelligent temperature control that balances quiet operation at 52dB(A) with effective cooling. Its unique ice-sensing air outlet technology provides a smooth cooling effect, and wall mounting uses included hooks, preventing the need for permanent installation or damage to walls.
Keystone 18,800 BTU Window-Wall Air Conditioner with Heating

The Keystone 18,800 BTU unit excels as an all-in-one window and through-the-wall air conditioner with supplemental heating. Best suited for large rooms up to 1,000 sq. ft., it provides efficient cooling and supplemental heating for moderate temperatures. Its multi-function design includes dehumidification and fan-only modes. The smart remote measures room temperature and automatically adjusts output for precision cooling. Note, its heating mode provides supplemental warmth and is ideal when outdoor temperatures range between 23 and 76 degrees Fahrenheit.
Buying Guide for Wall Installed Air Conditioners
Selecting the right wall installed air conditioner requires attention to multiple factors to ensure efficient, comfortable cooling tailored to your space.
Cooling Capacity and Room Size
Always match the BTU rating to your room’s square footage. Undersized units struggle to maintain temperature, while oversized units waste energy and cycle inefficiently. For example, units around 7,800 BTU suit small bedrooms (~300 sq. ft.), whereas models of 18,000 BTU serve large living spaces or open floor plans (up to 1,000 sq. ft.).
Installation Type
Wall air conditioners generally come as through-the-wall or window units convertible for wall mounting. Through-the-wall units require a wall sleeve and professional installation but save window space. Some units also allow window installation, adding flexibility.
Energy Efficiency
Look for units using environmentally friendly refrigerants such as R-32 and featuring a high Energy Efficiency Ratio (EER). Energy Star certified units help reduce power consumption and save on utility bills.
Additional Features
- Remote Control and Smart Connectivity: Remote operation adds convenience, while Wi-Fi enabled units allow app or voice control integration with Alexa or Google Assistant.
- Multiple Cooling Speeds and Modes: Adjustable fan speeds, sleep mode, and energy saver modes enhance comfort and efficiency at different times.
- Heating and Dehumidification: Some models also offer supplemental heating and moisture control, adding year-round versatility.
- Noise Levels: Quiet operation is essential for bedrooms or home offices. Check noise ratings in decibels.
Maintenance and Durability
Choose units with washable and easy-to-clean filters to maintain air quality and performance. Durable construction and included installation hardware also influence long-term satisfaction.