When it comes to cooling medium to large rooms, choosing the right 24 inch air conditioner can make all the difference in comfort and energy efficiency. Whether you need a window, wall-mounted, or portable option, this guide highlights some of the best 24 inch air conditioners available on Amazon, featuring various BTU ratings, installation types, and smart features. Below is a comparison of selected models suited for different spaces and preferences.
| Model | Type | BTU Cooling | Room Size | Key Features |
|---|---|---|---|---|
| LG 7,800 BTU Wall Unit | Wall-Mounted | 7,800 BTU | Up to 330 sq. ft. | Energy Efficient R-32 Refrigerant, 3 Cooling Speeds, Turbo Fan Modes |
| FLOWBREEZE 24″ Portable AC | Portable (Windowless) | Evaporative Cooling | Variable | 3-in-1 (AC, Humidifier, Fan), 2-Gal Tank, Ultra-Quiet |
| Whirlpool WHAW242CW Window AC | Window | 24,000 BTU | Up to 1,500 sq. ft. | Dehumidifier, 3 Speeds, 24H Timer, Electronic Controls |
| BLACK+DECKER 14,000 BTU Portable AC | Portable | 14,000 BTU | Up to 700 sq. ft. | Smart Wi-Fi Control, Dehumidifier, Voice Control |
| GE 5,000 BTU Window AC | Window | 5,000 BTU | Up to 150 sq. ft. | Manual Controls, Low Noise, Easy Install |
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LG 7,800 BTU Through the Wall Air Conditioner

The LG 7,800 BTU wall-mounted air conditioner is designed for room cooling up to 330 square feet. Featuring energy-efficient R-32 refrigerant with an EER of 10.7, it supports environmentally conscious and cost-effective operation. This unit requires a through-the-wall installation, measuring 24” wide by 20.1” deep and 14.4” high. It offers three cooling speeds and three pre-programmed modes, including a turbo fan and energy saver mode to maintain circulation without high power usage.
24″ Windowless Portable Air Conditioner by FLOWBREEZE

This windowless portable evaporative cooler serves multiple functions: air conditioner, humidifier, and fan. It operates silently at just 49dB, perfect for offices or bedrooms, and includes a 2-gallon water tank offering up to 10 hours of continuous use. It features a 15-hour timer and 120° oscillation, with three modes and speeds to tailor cooling and airflow. While it doesn’t use traditional refrigeration, it effectively cools air by adding water and ice packs.
Whirlpool WHAW242CW 24,000 BTU Window Air Conditioner

The Whirlpool 24,000 BTU window air conditioner cools rooms up to 1,500 square feet, making it ideal for larger spaces such as living rooms or open-concept apartments. It features a built-in dehumidifier removing 6.5 pints per hour and multiple operating modes including eco and sleep. The electronic control panel offers 3 cooling speeds, programmable timer, and 8-way directional louvers. It requires a dedicated 230V outlet and is designed for easy window installation.
BLACK+DECKER 14,000 BTU Smart Portable Air Conditioner

This portable 14,000 BTU air conditioner cools medium rooms up to 700 square feet and doubles as a dehumidifier and fan. It includes Wi-Fi connectivity with mobile app control and voice commands via Alexa and Google Assistant for added convenience. The portable design includes a window installation kit, LED display, and three-speed settings, making it a flexible solution for rentals or rooms lacking central air.
GE Window Air Conditioner Unit, 5,000 BTU

The GE 5,000 BTU window air conditioner is best suited for small rooms up to 150 square feet, such as small bedrooms or studios. It features manual adjustable fan and cooling settings with a straightforward installation kit included. Its low-noise operation ensures minimal disruption, making it ideal for nighttime use or quiet environments. This unit offers a budget-friendly and compact cooling option.
Buying Guide for 24 Inch Air Conditioners
Choosing the right 24 inch air conditioner depends on several key factors. This guide explains essential considerations to help you make an informed purchase.
Cooling Capacity (BTU) and Room Size
BTU (British Thermal Units) rating indicates the cooling power of the air conditioner. Higher BTU units cool larger spaces faster. For instance:
- Below 8,000 BTU: Suitable for small to medium rooms around 150 to 330 sq. ft.
- 10,000-14,000 BTU: Effective for medium rooms 500 to 700 sq. ft.
- Above 20,000 BTU: Required for large spaces over 1,000 sq. ft.
Installation Type
- Window Units: Easy to install and generally affordable. Requires a suitable window size.
- Through-the-Wall Units: More permanent installation, ideal for avoiding window blockages.
- Portable Units: Flexible and mobile, requiring venting via a window kit or windowless evaporative types.
Energy Efficiency
Look for units with Energy Star certification or modern refrigerants like R-32 to save on electricity. Features like sleep mode, eco mode, and energy saver modes help reduce consumption during low-use periods.
Features and Controls
- Smart Connectivity: Wi-Fi enabled units allow remote and voice control.
- Fan Speeds and Modes: More settings offer customized comfort.
- Dehumidification: Useful in humid climates to reduce moisture.
- Timer and Sleep Functions: Allow scheduled operation and quieter nighttime use.
Noise Level
Quiet operation is important for bedrooms and offices. Units with noise levels under 50dB are preferable for disturbance-free environments.
Maintenance and Filters
Regular cleaning and replacement of air conditioner filters enhance performance and air quality. Consider models with easy filter maintenance or buy compatible replacement filters.