Prices, ratings and stock were checked on Amazon on October 21, 2026. The old list was rebuilt around five units that were in stock.
A 5,000 BTU window AC is the cheapest way to cool a small room. Here are five that are in stock, and how to tell if your room is the right size.
Table of Contents
What 5,000 BTU Is Really For
Five thousand BTU is a 100 to 150 square foot job. A small bedroom, a dorm room, a home office. In a sunny room, it struggles. In a shaded one, it is perfect. The BTU calculator will tell you if your room fits.
Why Small Units Win on Price
A 5,000 BTU unit is the cheapest way to cool a small room. It costs $149 to $206, uses roughly 400 to 450 watts and fits a standard window. At 15 cents a kilowatt hour, that is about 6 cents an hour, or about $15 for a month of eight-hour days.
Mechanical vs Electronic Controls
Three of the five picks use mechanical controls: dials, no remote. They are simple and tough, and cheaper. The 6,000 BTU Midea adds a remote and a display. If you want to adjust from the couch, pay for the remote. If you only need on and off, dials work.
Here is where small window ACs are going: cheaper, and quieter. A 5,000 BTU unit with a washable filter costs $149 to $206 today, and the top picks have over 6,000 ratings each. The small class is the most crowded part of the shelf, and the brands know it.
5 Small Window ACs Worth Buying
Rechecked on Amazon on October 21, 2026. Prices, ratings and buttons are below.
Price on Amazon: $205.99 | 4.4 stars from 12,233 ratings (checked October 21, 2026)
The Midea 5,000 BTU EasyCool cools up to 150 square feet, with mechanical controls and a reusable filter. The listing says it runs quieter than a household refrigerator. It costs $205.99, with a 4.4 rating from over 12,000 ratings.
Price on Amazon: $159.00 | 4.3 stars from 17,700 ratings (checked October 21, 2026)
The Frigidaire 5,000 BTU cools up to 150 square feet. The listing shows two fan speeds, auto restart, a washable filter and a noise level of 52 dBA. It costs $159.00, with a 4.3 rating from over 17,000 ratings.
Price on Amazon: $149.00 | 4.3 stars from 7,335 ratings (checked October 21, 2026)
The GE 5,000 BTU is the cheapest. The listing says 5,100 BTU, mechanical controls with a manual fan and cooling settings, low-noise operation and an easy install kit, for rooms up to 150 square feet. It costs $149.00, with a 4.3 rating from over 7,000 ratings.
Price on Amazon: $149.95 | 4.2 stars from 6,470 ratings (checked October 21, 2026)
The Amazon Basics 5,000 BTU lists cooling for up to 150 square feet, a washable filter, seven temperature settings, two-speed cooling and fan modes and an adjustable window kit. It costs $149.95, with a 4.2 rating from over 6,000 ratings.
Price on Amazon: $227.69 | 4.2 stars from 781 ratings (checked October 21, 2026)
The Midea 6,000 BTU EasyCool steps up in size. The listing says it cools up to 250 square feet, runs as low as 52 dB and has three modes: cool, fan and dehumidify, with a remote. It costs $227.69, with a 4.2 rating from 781 ratings.
The downside is that tiny units get pushed into jobs they cannot do. A 5,000 BTU unit cools about 150 square feet. Put it in a 300 square foot room and it runs all day and wins nothing. Expect more bad reviews for good units, written by people who bought the wrong size. Also expect more renewed units at low prices, with short warranties.
Noise
The Frigidaire lists 52 dBA and the 6,000 BTU Midea 52 dB on low. That is about the level of a quiet office. For sleeping, it is fine for most people. For the quietest, read the quietest window air conditioners.
Window Fit
Small units fit double-hung windows with specific width and height limits, so measure before you buy. The GE 6,000 BTU listings give ranges, like 21.875 to 36 inches wide. Casement windows need a special unit. A bracket helps with weight.
Washable Filters
Four of the five picks have washable filters. Wash them every few weeks in summer. A clogged filter is the number one reason a small unit stops cooling. It takes two minutes and saves a service call.
How to Pick
Want the cheapest? The GE. Want the biggest review pile at a low price? The Frigidaire. Want a remote and a bit more power? The Midea 6,000 BTU. For the next size, see the 6,000 BTU air conditioners, the best small window air conditioners and window air conditioners explained.
FAQ
How many square feet does a 5,000 BTU AC cool?
About 100 to 150 square feet in a shaded room.
What is the cheapest 5,000 BTU window AC?
The GE at $149.00 as of October 21, 2026.
Do 5,000 BTU window ACs have remotes?
Most of these use mechanical dials. The 6,000 BTU Midea has a remote.
How much do they cost to run?
About 6 cents an hour at 15 cents a kilowatt hour.
Final Word
Check the room size first. Under 150 square feet, any of these four 5,000 BTU units works, and the Midea 6,000 BTU is the step up.
What comes next: smarter small units with apps, and more 6,000 BTU models taking the 5,000 BTU spot. If your room is under 150 square feet and shaded, a 5,000 BTU unit is plenty.
Related Guides
Keep going with best small window air conditioners, 6,000 BTU air conditioners, quietest window air conditioners, BTU calculator and window air conditioners explained.
