Finding the right air conditioner for your space can make a big difference in comfort and energy savings. Below is a summary table featuring the best 20 inch wide air conditioners and compatible air filter options, chosen for their cooling capacity, noise level, smart features, and energy efficiency.
Product | Brand | BTU / Coverage | Key Features |
---|---|---|---|
LG 18,000 BTU Dual Inverter Smart Window AC | LG | 18,000 BTU / 1,000 sq. ft. | Smart phone control, ultra quiet, ENERGY STAR certified |
GE 5,000 BTU Mechanical Window AC | GE | 5,000 BTU / 150 sq. ft. | Manual controls, easy install kit, low noise |
BLACK+DECKER 14,000 BTU Smart Portable AC | BLACK+DECKER | 14,000 BTU / 700 sq. ft. | Portable, Wi-Fi & voice control, dehumidifier & fan |
Electactic 14,000 BTU Window AC | Electactic | 14,000 BTU / 700 sq. ft. | 3-in-1 cooling, dehumidifier, quiet operation |
Midea MAW08V1QWT U-Shaped Smart Window AC | Midea | Energy efficient inverter / ENERGY STAR | Ultra quiet, Wi-Fi control, 35% energy savings |
LG 18,000 BTU Dual Inverter Smart Window Air Conditioner

The LG 18,000 BTU Dual Inverter Smart Window AC is designed for cooling spaces up to 1,000 square feet, ideal for bedrooms, living rooms, or apartments. It includes the LG ThinQ app enabling smartphone control from anywhere, as well as compatibility with Google Assistant and Amazon Alexa for voice commands.
This unit operates quietly with sound levels as low as 52 decibels in low mode, making it suitable for both sleep and work environments without disruption. Certified by ENERGY STAR, it includes inverter technology that enhances efficiency, providing energy savings and reliable performance. The Dual Inverter compressor adjusts cooling power continuously, offering rapid and steady temperature regulation.
GE 5,000 BTU Mechanical Window Air Conditioner Unit

The GE 5,000 BTU Window Air Conditioner is a compact and effective option for small rooms up to 150 square feet. It includes a manual adjustable fan and cooling settings, making it simple to operate without complex electronics.
Its low noise operation ensures minimal disruption during nighttime use, perfect for bedrooms or small offices. The unit comes with an easy install kit, which helps start cooling quickly without professional assistance. The straightforward mechanical controls offer durability and ease of maintenance for users seeking a no-frills window AC unit.
BLACK+DECKER Smart Portable Air Conditioner, 14,000 BTU

The BLACK+DECKER 14,000 BTU Portable Air Conditioner cools rooms up to 700 square feet and features smart technology for wireless control via mobile apps and voice assistants like Alexa and Google Assistant. This unit acts as a dehumidifier and a fan in addition to cooling.
Its portability allows easy relocation between rooms, with a compact footprint (16.5” x 14.06” x 27.09”) and comes with a window kit for installation. The full remote control and LED display simplify operations, making it a functional option for those wanting flexibility and smart home compatibility.
Electactic 14,000 BTU Window Air Conditioner

This Electactic Window Air Conditioner offers 14,000 BTU cooling suitable for rooms up to 700 sq. ft. With three operating modes (cool, dry, fan), it functions as a dehumidifier removing up to 79 pints daily, enhancing indoor air comfort and quality.
It also features adjustable fan speeds, energy saver, sleep, and auto modes to optimize performance based on user needs. Noise levels as low as 45 dB allow quiet operation for watching TV or sleeping. The adjustable louvers enable directed airflow for better room coverage.
Midea MAW08V1QWT U-Shaped Smart Window Air Conditioner

The Midea U-Shaped Smart Inverter Air Conditioner stands out for its unique U-shaped design, using the window to block external noise while delivering ultra-quiet operation at approximately 32 dBA. This inverter unit is ENERGY STAR certified and achieves over 35% energy savings compared to traditional AC models.
It features Wi-Fi capability for remote control via the SmartHome app and voice commands with Alexa or Google Assistant, offering convenient smart home integration. Its efficient cooling and quieter performance make it suitable for apartments, bedrooms, or offices.
Buying Guide for 20 Inch Wide Air Conditioners
Choosing the best 20 inch wide air conditioner involves evaluating several factors to ensure your cooling needs are met efficiently and comfortably.
Cooling Capacity (BTU and Room Size)
The BTU rating determines the cooling power. Smaller rooms up to 150 sq. ft. can benefit from 5,000 BTU units like the GE Window AC, while medium spaces (up to 700 sq. ft.) suit models with 14,000 BTU, such as BLACK+DECKER or Electactic. Larger rooms (up to 1,000 sq. ft.) need higher ratings around 18,000 BTU like LG units.
Energy Efficiency and Certifications
Look for ENERGY STAR certification and inverter technology, which offer significant energy savings and reduce electricity costs. Models like the LG Dual Inverter and Midea U-Shaped AC emphasize these features, lowering operational noise and consumption.
Noise Levels
Quiet operation is crucial, especially for bedrooms or workspaces. Decibel levels under 55 dB are ideal. The Midea U-shaped and LG units provide ultra-quiet functions, contributing to peaceful environments.
Smart Features and Controls
Many modern air conditioners include Wi-Fi for smartphone app control and compatibility with voice assistants (Alexa, Google Assistant), enabling remote operation and scheduling. Consider if these features improve convenience for your lifestyle.
Portability and Installation
Window units generally require installation but vary in ease. Portable conditioners offer mobility but may be larger and require venting kits. Check available installation accessories, space constraints, and whether you need flexibility in unit placement.
Additional Functions
Dehumidification and multi-mode operation (cool, fan, dry) enhance comfort beyond simple cooling. Filters and washable components help improve air quality and cleanup convenience.