Best Small Window Air Conditioners of 2025

Mark Greer Avatar
Mark Greer
Last Updated: Jan 8, 2025

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Small window air conditioners are a convenient and effective solution for cooling small spaces. Perfect for bedrooms, offices, or small apartments, these compact units fit easily into most standard-sized windows. With their adjustable temperature settings and powerful cooling capabilities, small window air conditioners provide efficient and reliable cooling during hot summer months. They are designed to be energy-efficient, ensuring you stay comfortable without breaking the bank. Easy to install and operate, these air conditioners offer a cost-effective way to beat the heat and create a comfortable living environment.

At a Glance: Our Top Picks

Midea 5,000 BTU EasyCool Window Air Conditioner Cover #TOP 1
Midea 5,000 BTU EasyCool Window Air Conditioner
ftb score rating icon 9.9
GE 5000 BTU Window Air Conditioner Cover #TOP 2
GE 5000 BTU Window Air Conditioner
ftb score rating icon 9.8
LG LW5024X Window Air Conditioner Cover #TOP 3
LG LW5024X Window Air Conditioner
ftb score rating icon 9.6

Top 10 Small Window Air Conditioners

Midea 5,000 BTU EasyCool Window Air Conditioner

MAW05M1BWT
White
5,000 BTU
Midea 5,000 BTU EasyCool Window Air Conditioner Cover
Midea 5,000 BTU EasyCool Small Window Air Conditioner - Cool up to 150 Sq. Ft. with Easy-to-Use Mechanical Controls and Reusable Filter, Perfect for Small Bedroom, Living Room, Home Office

The Midea 5,000 BTU EasyCool Window Air Conditioner is perfect for smaller rooms, offering 7 temperature settings, 2 cooling/2 fan-only speeds, and 2-way air direction. It has a Combined Energy Efficiency Rate (CEER) of 11.0 and is quieter than a household refrigerator. Installation is easy and all mounting accessories are included. It is suitable for windows 23''-36'' wide and minimum 13'' high.

What We Like
Energy efficient
Quiet and easy to use
Easy installation
1 year parts and labor warranty
Cool up to 150 sq. ft.
#TOP 2

GE 5000 BTU Window Air Conditioner

GE
AHEC05AC
White
5000 BTU
GE 5000 BTU Window Air Conditioner Cover
GE Window Air Conditioner Unit, 5,000 BTU for Small Rooms up to 150 sq ft. with Manual Adjustable Fan and Cooling Settings, Perfect for Small Bedroom or Living Room, Easy Install Kit Included, White

The GE 5000 BTU Window Air Conditioner is an efficient cooling solution for smaller areas like bedrooms and guest rooms. This AC unit is the right size for delivering 5000 BTU cooling capacity to smaller areas, with low-noise operation ideal for nighttime use. It has 2 cooling modes and 2 fan speeds to provide flexible and optimal room temperature, and the easy install kit included makes installation a breeze. The slide-out filter makes cleaning easy to keep the unit running its best.

What We Like
Reliable and efficient cooling
Compact size and easy installation
Good value for the price
#TOP 3

LG LW5024X Window Air Conditioner

LG
LW5024X
White
5,000 BTU
LG LW5024X Window Air Conditioner Cover
LG LW5024X Window Air Conditioner, for Small Room (150 Sq.Ft), Quiet Operation, 115V, 5,000 BTU, White

The LG Window AC 5,000 BTU is perfect for small rooms up to 150 sq.ft. Enjoy quiet operation with sound levels as low as 50dB in low mode. Easily control settings with mechanical controls. Installation is a breeze with the included EZ Mount kit for double-hung windows. The slide-out filter makes cleaning hassle-free, ensuring optimal performance when cleaned every 30 days.

What We Like
Quiet Operation
Easy Installation
Effortless Cleaning
#TOP 4

Amazon Basics Window-Mounted Air Conditioner

Amazon Basics
MWHUK-05CMN8-BCK0
White
5000 BTU
Amazon Basics Window-Mounted Air Conditioner Cover
Amazon Basics Window Air Conditioner, 5000 BTU, Cools up to 150 Sq. Ft., White AC Unit, Mechanical Control

The Amazon Basics Window-Mounted Air Conditioner is an energy efficient air conditioning unit that cools rooms up to 150 square feet with standard 9 foot ceilings. It features 7 temperature settings, dual cooling and fan settings, adjustable air direction, and an inbuilt filter that can be easily removed, washed, and reused. The window-mounting kit includes adjustable side panels that expand to fit standard windows.

What We Like
Energy efficient
Ideal for small spaces
Adjustable air direction
Easy to install
Quiet operation

LG LW6024RSMX Window Air Conditioner

LG
LW6024RSMX
White
6,000 BTU
LG LW6024RSMX Window Air Conditioner Cover
LG LW6024RSMX Window Air Conditioner, Wi-Fi Enabled w/Remote, for Small Room (260 Sq.Ft.), Quiet Operation, 115V, 6,000 BTU, White

The LG Window AC is perfect for small rooms up to 250 sq.ft. It comes with a user-friendly panel and remote control for easy operation from anywhere in the room. The installation is a breeze with the included EZ Mount kit, and the slide-out filter makes cleaning hassle-free. The washable dust filter ensures efficient dehumidification, while extra features like a remote control and Eco-friendly R32 refrigerant enhance the overall experience.

What We Like
Quiet Operation
User-Friendly Controls
Easy Installation
#TOP 6

Honeywell 5,000 BTU Window Air Conditioner

HAC5
White
Honeywell 5,000 BTU Window Air Conditioner Cover
Honeywell 5,000 BTU Window Air Conditioner, Adjustable Thermostat, 7 settings, Quiet, 150 sq ft Coverage

The Honeywell Window AC offers high performance with its 5,000 BTU power, ideal for cooling a room of 100-150 square feet. You can easily adjust the temperature with the Mechanical Thermostat and choose from 7 settings to suit your preference. With 4 mode options including Auto, Cool, Fan, and Dry, plus features like a 24-hour timer and eco energy-saving mode, this AC provides customized cooling solutions. Installation is a breeze with the included kit, and the removable filter ensures easy maintenance.

What We Like
Adjustable Thermostat
Multiple Mode Options
Easy Installation

LG 5000 BTU Window Air Conditioners LW5023

LG
LW5023
White
5,000 BTU
LG 5000 BTU Window Air Conditioners LW5023 Cover
LG 5000 BTU Window Air Conditioners [2023 New] Easy Mechanical Control Ultra-Quiet Compact-size Cools Washable Filter 150 Sq.Ft. for Small Room AC Unit air conditioner Easy Installation White LW5023

LG Window AC LW5023 is perfect for small rooms, offering maximum cooling for up to 150 sq.ft. Enjoy the quiet operation with sound levels as low as 50dB. The mechanical controls make it easy to adjust settings. Installation is a breeze with the included kit, and the slide-out filter allows for easy cleaning every 30 days, ensuring optimal performance. The washable filter captures particles, maintaining efficient dehumidification, while the multiple fan speeds and energy-saving function provide customizable cooling and lower electricity bills.

What We Like
Quiet Operation
Easy Installation
Washable Filter
#TOP 8

LG LW8024RSMX Window Air Conditioner

LG
LW8024RSMX
White
8,000 BTU
LG LW8024RSMX Window Air Conditioner Cover
LG LW8024RSMX Window Conditioner, Wi-Fi Enabled w/Remote, 350 Sq.Ft, 4-Way Air Deflection, 3 Cooling and Fan Speeds, 115V, 8,000 BTU, White

The LG Window AC is designed to cool spaces up to 350 square feet with its powerful 8,000 BTUs, making it perfect for small to medium rooms. You can easily adjust the temperature from anywhere using the LG ThinQ App on your mobile device, offering unmatched convenience. Additionally, it works with Google Assistant and Amazon Alexa for voice control, so you can change settings hands-free. Installation is straightforward with the included kit, and maintaining your unit is simple thanks to the washable filter, ensuring it runs efficiently and lasts longer.

What We Like
Wi-Fi enabled control
Easy installation
Washable dust filter
Voice command compatibility
#TOP 9

BLACK+DECKER BD05MWT6 Window Air Conditioner 5000 BTU

BD05MWT6
White - 5000 BTU
1 Count (Pack of 1)
BLACK+DECKER BD05MWT6 Window Air Conditioner 5000 BTU Cover
BLACK+DECKER BD05MWT6 Window Air Conditioner 5000 BTU, Cools Up to 150 Square Feet White

The BLACK+DECKER BD05MWT6 Window Air Conditioner is a powerful 5000 BTU unit that can cool up to 150 square feet. It uses R32 refrigerant, which has zero impact on the ozone layer and improves energy efficiency by up to 10% compared to R-410A. It has two fan-only speeds and a 56-decibel sound rating. Installation is easy and the filter is removable and washable. Customers report that it is a bit noisy, but not intolerable, and that it is easy to install and use.

What We Like
Energy efficient
Easy installation
Removable and washable filter
#TOP 10

Keystone Energy Star 5,000 BTU Window AC

KSTAW05CE
Bright White
5000 BTU
Keystone Energy Star 5,000 BTU Window AC Cover
Keystone 5,000 BTU Window Air Conditioner and Dehumidifier, Window AC Units for Apartment, Living Room, Bathroom, and Small Rooms up to 150 Sq.Ft., Quiet Window Air Conditioners with Remote Control

Stay cool and comfortable with the Keystone Window AC. This reliable air conditioner is perfect for small rooms up to 150 sq.ft. With 3 cooling modes and 3 fan speeds, you can easily adjust the temperature to your liking. The built-in dehumidification system removes 1.3 pints of moisture from the air every hour, ensuring a dry and comfortable environment. The low noise level of 49dB makes it ideal for bedrooms and nurseries, allowing you to sleep peacefully or work without distractions. The smart remote control takes the temperature of the room and sends a signal to the AC unit for accurate cooling, no matter where you are in your home. Plus, with Energy Star certification, you can enjoy energy-saving comfort without compromising on performance.

What We Like
Reliable cooling
Efficient dehumidification
Quiet operation
Buying Guide Image

Choosing the Best Small Window Air Conditioners to Build Your Dream Home

Power

The first factor to consider before investing in lightweight window air conditioners is the power of the appliance. The power of the air conditioner will determine the cooling capacity. And, as we have seen, this power is measured in BTU (British thermal unit).

As we have seen, compared to other types of air conditioners, the window is capped at up to 30,000 BTUs. But you can also find devices that have low power, 7,000 BTUs, for example.

The power of the air conditioner depends on several factors, such as the area of the room, the number of windows that allow sunlight, and the number of people who frequent the space. To give you an idea, experts point out that in homes, the use of window air conditioners with a power rating ranging from 9,000 to 18,000 BTUs is recommended.

However, a good average is considering between 600-800 BTUs per square meter. So, in a 15-meter square room, for example, a product of at least 9,000 BTUs must be installed. 20,000 BTU window air conditioners are perfect for areas up to 35-meter square.

Dimension

We recommend that you take into consideration the size of the product. This info is important both for hole-in-the-wall measurements and for aesthetic reasons. In general, the height of the device will vary between 30 and 47 cm. The width, on the other hand, can vary between 30 and 66 cm depending on the model. Make sure it is lightweight.

The size of the window air conditioner should be following the fixing space and the size of the room. As for the depth, you can find devices that measure between 40 and 80 cm. Remember that the size of the space where the window air conditioner will be installed will have to be a few more centimeters to accommodate the support grids.

Speed

Another factor to check before purchasing your window air conditioner is the amount of speed available. The speed of the air conditioner will determine the force with which the cooled air will blow out of the unit.

In general, you can choose models that offer two or more speed options. The most common are high and low speeds. But here you can also choose models that still have ventilation mode, which has a different speed.

Airflow

Airflow is another factor that we recommend you consider when choosing the best window air conditioner. Did you know that depending on the model you choose, you can find those that can be directed the air in up to six different directions? Some models also have an air renewal system, which allows the exchange of air to dissipate smoke and odors from the environment.

Frequently Asked Questions (FAQs)

1. What is the smallest window size air conditioner?

There are several small window air conditioners available in the market, such as the FRIGIDAIRE 5,000 BTU Mini-Compact, FRIGIDAIRE Energy Star 6,000 BTU, Midea U Inverter Window Air Conditioner, Haier Serenity Series 6,000 BTU, Arctic King WWK05CM91N, Whirlpool 5,000 BTU, and LG LW6017R 6,000 BTU. These models are compact and suitable for smaller windows.

2. Do they make air conditioners for very small windows?

Yes, there are air conditioners designed to fit very small windows. For example, the Midea 5,000 BTU EasyCool Window Air Conditioner is specifically designed to fit windows with vertical openings as small as 13 inches and as wide as 16 inches. Its compact size makes it ideal for small windows.

3. What is the smallest BTU window air conditioner you can buy?

Window air conditioners come in various BTU sizes, but the smallest ones available are typically 5,000 BTU units. These compact units are suitable for smaller spaces and windows where a larger air conditioner may not fit.

4. Is 5000 BTU the smallest window air conditioner?

Yes, the MIDEA MAW05M1BWT is one of the smallest window air conditioners available, with 5000 BTU of cooling capacity. It has a compact design with dimensions of approximately 16 inches in length, 15-1/2 inches wide, and 12-1/4 inches in height.

5. Is there such thing as a small air conditioner?

Yes, there are small air conditioners available, known as portable air conditioners (PACs). These units are designed to cool a single room without the need for complex installation. Portable air conditioners are a cost-effective cooling solution and often come with features like built-in timers for energy efficiency.

6. How do you make a window air conditioner fit a small window?

To make a window air conditioner fit a small window, you can use foam tape to cover the gaps between the AC unit and the window. Most AC units come with foam tape, but you can purchase additional rolls if needed. Another option is to install the AC with one curtain mostly collapsed to reduce the width.

7. Do these small air conditioners work?

Portable air conditioners, while not as effective as window AC units, provide a cooling solution for single rooms. They are better than fans but may not cool as efficiently as window ACs. It is recommended to consider the size of the room and the BTU rating of the portable AC to ensure effective cooling.

8. Is 8000 BTU too much for a small room?

For a small room, a 5,000 to 6,000 BTU air conditioner is generally sufficient. An 8,000 BTU unit is more suitable for medium-size rooms measuring around 340 square feet. It is important to choose an air conditioner with the correct BTU rating to ensure optimal cooling efficiency for the room size.

9. What will a 5000 BTU air conditioner cool?

A 5,000 to 6,000 BTU air conditioner is suitable for cooling an area between 100 and 300 square feet. If the room is larger, you may need a higher BTU rating. For example, 7,000 to 8,200 BTU units are adequate for cooling 250 to 550 square feet, while 9,800 to 12,500 BTU units can cool up to 950 square feet.

Editor's Notes

During our small window air conditioner research, we found 24 small window air conditioner products and shortlisted 10 quality products. We collected and analyzed 117,451 customer reviews through our big data system to write the small window air conditioners list. We found that most customers choose small window air conditioners with an average price of $231.30.

The small window air conditioners are available for purchase. We have researched hundreds of brands and picked the top brands of small window air conditioners, including Midea, GE, LG, Honeywell, BLACK+DECKER. The seller of top 1 product has received honest feedback from 385 consumers with an average rating of 4.7.

Written by
Mark Greer Avatar

Mark Greer has been an excellent residential carpenter for eight years in Los Angeles and has complete knowledge of woodworking, power tools, and home DIY. He never misses a chance of the lookout for new features and innovations in popular and novel home appliances as an insightful writer.