Best 24 Inch Air Conditioners for Efficient Cooling 2026

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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

LG 7,800 BTU Through the Wall Air Conditioner

LG 7,800 BTU Through the Wall Air Conditioner

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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

FLOWBREEZE 24 Inch Windowless Portable AC

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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

Whirlpool 24,000 BTU Window AC

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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

BLACK+DECKER 14,000 BTU Portable AC

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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

GE 5,000 BTU Window Air Conditioner

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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.

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