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Here Are The Top 10 Best 21-inch Window Air Conditioners As Of December, 2022

Our list of 21-inch-wide window air conditioners includes only units that are between 20 and 21.5-inch wide and lists the best ones, according to our unique ranking system.

The List :
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#1 Best Model 2022: Tosot Tranquility 8000 BTU

21.4
-inch
wide
14
in.
high
8000
BTU
Cool rating
42
dB
Noise Level
  • Window Mounting Kit
  • Energy Star Compliant
  • Remote control
  • Fits 115-120V Power Outlets

  • Window Mounting Kit
  • Energy Star Compliant
  • Remote control
  • Fits 115-120V Power Outlets

#2 Second Best: Tosot Chalet 12000 BTU

21.38
-inch
wide
15.75
in.
high
12000
BTU
Cool rating
65
dB
Noise Level
  • Energy Star Compliant
  • Remote control
  • Fits 115-120V Power Outlets
Why The Tosot Chalet 12000 BTU?
  1. 2,939 ratings were analyzed across 2 sources, resulting in a 8.8/10 average.


  • Energy Star Compliant
  • Remote control
  • Fits 115-120V Power Outlets
Why The Tosot Chalet 12000 BTU?
  1. 2,939 ratings were analyzed across 2 sources, resulting in a 8.8/10 average.

#3 Also Good: GE AHQQ06LX 21-inch Wide Air Conditioner

21.25
-inch
wide
12.43
in.
high
6150
BTU
Cool rating
43
dB
Noise Level
  • Window Mounting Kit
  • Remote control
  • Fits 115-120V Power Outlets

  • Window Mounting Kit
  • Remote control
  • Fits 115-120V Power Outlets

#4 Also Good: Tosot Chalet 8000-BTU 21-inch Wide Air Conditioner

21
-inch
wide
12.75
in.
high
8000
BTU
Cool rating
65
dB
Noise Level
  • Window Mounting Kit
  • Energy Star Compliant
  • Remote control
  • Fits 115-120V Power Outlets
Why The Tosot Chalet 8000-BTU?
  1. 2,823 ratings were analyzed across 3 sources, resulting in a 8.8/10 average.


  • Window Mounting Kit
  • Energy Star Compliant
  • Remote control
  • Fits 115-120V Power Outlets
Why The Tosot Chalet 8000-BTU?
  1. 2,823 ratings were analyzed across 3 sources, resulting in a 8.8/10 average.

21.38
-inch
wide
15.75
in.
high
10000
BTU
Cool rating
65
dB
Noise Level
  • Window Mounting Kit
  • Energy Star Compliant
  • Remote control
  • Fits 115-120V Power Outlets
Why The Tosot Chalet 10000-BTU?
  1. 2,347 ratings were analyzed across 2 sources, resulting in a 8.8/10 average.


  • Window Mounting Kit
  • Energy Star Compliant
  • Remote control
  • Fits 115-120V Power Outlets
Why The Tosot Chalet 10000-BTU?
  1. 2,347 ratings were analyzed across 2 sources, resulting in a 8.8/10 average.

#6 Also Good: Haier QHEK14AC

20.1
-inch
wide
15
in.
high
14000
BTU
Cool rating
54
dB
Noise Level
  • Window Mounting Kit
  • Wi-Fi Enabled
  • Alexa-compatible
  • Remote control
  • Fits 115-120V Power Outlets

  • Window Mounting Kit
  • Wi-Fi Enabled
  • Alexa-compatible
  • Remote control
  • Fits 115-120V Power Outlets

#7 Also Good: Gree 10000 BTU

21.4
-inch
wide
14.5
in.
high
10200
BTU
Cool rating
  • Window Mounting Kit
  • Remote control
  • Dehumidification Mode
  • Fits 115-120V Power Outlets

  • Window Mounting Kit
  • Remote control
  • Dehumidification Mode
  • Fits 115-120V Power Outlets

#8 Also Good: Haier ESAQ406T

21.25
-inch
wide
12.44
in.
high
6000
BTU
Cool rating
12.2
EER
  • Window Mounting Kit
  • Energy Star Compliant
  • Remote control
  • Fits 115-120V Power Outlets
Why The Haier ESAQ406T?
  1. 2,988 ratings were analyzed across 5 sources, resulting in a 8.7/10 average.


  • Window Mounting Kit
  • Energy Star Compliant
  • Remote control
  • Fits 115-120V Power Outlets
Why The Haier ESAQ406T?
  1. 2,988 ratings were analyzed across 5 sources, resulting in a 8.7/10 average.

#9 Also Good: GE PHC06LY

21.25
-inch
wide
12.44
in.
high
6150
BTU
Cool rating
52
$
Annual Cost
  • Window Mounting Kit
  • Wi-Fi Enabled
  • Alexa-compatible
  • Remote control
  • Fits 115-120V Power Outlets

  • Window Mounting Kit
  • Wi-Fi Enabled
  • Alexa-compatible
  • Remote control
  • Fits 115-120V Power Outlets
You Should Also Check Out: Top 10 Best Smart Air Conditioners 2022

#10 Also Good: GE AEM08LX

20.94
-inch
wide
12.75
in.
high
8000
BTU
Cool rating
60
$
Annual Cost
  • Energy Star Compliant
  • Remote control
  • Fits 115-120V Power Outlets
Why The GE AEM08LX?
  1. 94 ratings were analyzed across 2 sources, resulting in a 8.6/10 average.


  • Energy Star Compliant
  • Remote control
  • Fits 115-120V Power Outlets
Why The GE AEM08LX?
  1. 94 ratings were analyzed across 2 sources, resulting in a 8.6/10 average.

3 More 21-inch window air conditioners, Sorted By The Latest Model First:

21.2
-inch
wide
12.4
in.
high
8000
BTU
Cool rating
51
dB
Noise Level
  • Window Mounting Kit
  • Wi-Fi Enabled
  • Remote control
  • Fits 115-120V Power Outlets

  • Window Mounting Kit
  • Wi-Fi Enabled
  • Remote control
  • Fits 115-120V Power Outlets
21.2
-inch
wide
12.4
in.
high
42
dB
Noise Level
  • Window Mounting Kit
  • Remote control
  • Fits 115-120V Power Outlets

  • Window Mounting Kit
  • Remote control
  • Fits 115-120V Power Outlets
You Should Also Check Out: Top 10 Best Quiet Air Conditioners 2022


This page offers a low-ad experience, in exchange for "Check Price" and review links to lead to the stores you know, which pay us a commission that has no effect on your price. Items are chosen independently (regardless of price) by our computer review crawler and commented by human analysts. Read more about our constantly-updating unique ranking system


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