Best Window Air Conditioners for Small Room 2020

best window air conditioners for small room
(Last Updated On: January 18, 2020)
Disclosure: Some of the links below are affiliate links. Meaning, As an Amazon Associate we earn from qualifying purchases. 

As May heats up around the country, for many, summer’s broil will mercifully be kept in check by air conditioning. It does not matter if it’s your bedroom, classroom, office, or garage, sometimes you really need to cool down. Now it’s time to move on from fans to an air conditioner. They have an extremely comforting impact on modern life, and about 1.6 billion homes in the world these days have some form of air conditioning, according to a report issued by the International Energy Agency. Since there are many kinds of air conditioners, so let’s talk about smarter and more efficient one, and that is window air conditioner. Window units has the capacity of cooling large rooms like halls, and some of them are for smalls rooms. So, we’ve mentioned the best window air conditioners for small rooms, like small guests rooms, and studies.

We have also listed and reviewed best window air conditioners for large rooms.

Air conditioning and Air conditioner

A system for controlling the heating, ventilation, and temperature in a building or carrier, generally to maintain a cool atmosphere in warm conditions. This complete system is referred to as HVAC i.e Heating, Ventilation, and Air Conditioning. And a machine that controls the humidity and temperature of air is known Air conditioner.


An air conditioning system usually consists of five mechanical components:

  • -Compressor.
  • -Fan.
  • -Condenser Coil (The outer one)
  • -Evaporator Coil (The inner one)
  • -Chemical Refrigerant.


It explains the 4 main types of air conditioners.

  1. CENTRAL AIR CONDITIONING: The most common type of all the different types of air conditioners, and due to its ability to cool efficiently it is most preferable for larger homes.
  2. MINI-SPLIT AIR CONDITIONER: Mini-split systems also known as Ductless, are most common in retro-fitted parts of the home.
  3. WINDOW AIR CONDITIONER: Window air conditioner are a compact unit and are also known as ‘unitary unit’. Use for the cooling of only one particular room, either large or small. It’s system is installed in the window of a room.
  4. PORTABLE AIR CONDITIONER: Portable air conditioners are said to be the next generation of window units. They take the air in from the room and cools it, then deliver it back into the room.

Choosing a new air conditioning system for your home can be a stressful and confusing, sometimes. With all the different types of air conditioners in the stores, the possibilities may seem distressing. Depending on your situation, you might even be under a time pressure and have to choose a new system soon. Here we are discussing about an air conditioner that would cool a small room. As we think A Window Air Conditioner is best, it’s different models are for different sizes of rooms.


Window air conditioner also known as room air conditioner, is the simplest form of an air conditioning system and is mounted on windows or walls. The evaporator side is located in the room for cooling and the condenser side outdoor for heat rejection.

All of the window air conditioners do a good enough job at keeping a space cool. What makes them different from another is how quickly, or quietly it cools a room, how easy it is to operate. The models of window AC, which can be used for cooling small rooms, covers the area of roughly 100 to 300 square feet, and their capacity ranges from 5000 to 6500 BTU. They are the smallest, lightest, and the least expensive ones, but the prices rises with an increase of size and capacity.

For more efficient work of the window unit, find one that would be equipped with insulating panels. Most new window units come with panels, you can place over the plastic adjustable side panels, to boost efficiency. You can also prevent air from leaking in or out by adding weather-stripping around the perimeter.


A window air conditioner generally uses energy more efficiently than a portable unit. That shows you get even more cooling power per BTU. Keep in your mind if you are looking for a window unit, pay more attention to the BTU rating. The higher that number is, the larger the room the unit can cool. But if you need it for small one go with lower BTU number.


Window Air conditioners are cheaper in the short run. But if you need more of them, you are perhaps better off with central air. A central air conditioner uses less energy overall. But for a small room or area that has to be cooled, window unit is cheaper and better than central air unit. Window air units can do great job of cooling down a room or two, but they cost only a fraction of what a central Air unit would cost.


The EER is the ratio of the cooling capacity (BTU per hour) to the power input (watts). The higher EER rating means the more efficient air conditioner is. A room air conditioner’s efficiency is measured by this energy efficiency ratio (EER). Each increase of 1.0 on the scale of EER, represents a 10% increase in energy efficiency of unit. Information about the EER can be found on the Energy Guide label for the unit, so while buying a new room air conditioner look for an EER of at least 12.

Are you having trouble deciding what is the best window air conditioner for small room?  A window unit is no doubt, a versatile one and makes your small portion cooler in less time. However, it is not difficult to find one, but trying to figure out which of the thousands online is most good enough, that will surely take a lot of time and I know how thwarting that can be. Well you don’t have to waste time as I have listed the top 3 ones. There are a lot of quality window air conditioners for small rooms, but I trimmed the list to top 3 for your convenience. Let’s take a look at them.

Quick Search & Comparison of Best Window Air Conditioners for Small Room

Window Air Conditioner BTU Dimensions
Frigidaire FFRA0511R1- Editor's Choice 5000 15 x 16 x 12 inches Check Price
GE AEM05LX Window Air Conditioner 5200 to 10000 24.5 x 22.8 x 17.5 inches Check Price
Keystone Window-Mounted Air Conditioner 5000 15.5 x 17.5 x 18.2 inches Check Price


Frigidaire FFRA0511R1 Window-Mounted Mini-Compact Air Conditioner

best window air conditioner for small room


Frigidaire’s FFRA0511R1 5000 BTU Window-Mounted Mini-Compact Air Conditioner is perfect for cooling a room up to 150 square feet. It instantly cools a room on hot days and its quiet operation keeps you cool with a good sleep. It uses standard electrical outlet and consume 115 Volts energy. Standard EER is 12 and this model of Frigidaire’s EER is 11.1 that is near to standard. With all its features it is one of an amazing unit, that is designed for the cooling of small rooms.

For a healthier and comfortable environment there’s a washable filter and it’s easy to access. This Antibacterial mesh filter reduces room odors, bacteria and airborne particles from air. It also features two cool speeds and two fan speeds that helps to control airflow. Its automatic restart resumes previous operations settings when power is restored. While its dehumidifying function, up to 1.1 pints per hour, will cleanse your space of excess moisture. This window unit also save a lot of money as its low power start-up conserves energy. No extra extension cord is required, its 6.5 feet long three-prong power cord is enough.

Some of the pros and cons of Frigidaire FFRA0511R1 are given below

Pros Cons
Easy to install. In night it makes little noise, but that is probably because of fan.
Energy saver.
Cools a room quickly.
Best for small rooms.



This window air conditioner is a perfect fit for small rooms who prefer more vigorous, decent and affordable unit. Despite of the fact that it makes little noise, that is negligible, but it can, for sure, cool your room in no time and will save your money as well. You can enjoy numbers of great features. Although this window air conditioner is not made for large rooms, but you can absolutely rely on this window air conditioner, if you want it for small rooms like studies and home libraries. This amazing product by Frigidaire is the best you can have, and you will never ever regret buying this. So, order it, as soon as you can, as it is absolutely super light for your room. Absolutely recommended.

GE AEM05LX Window Air Conditioner

air conditioner for small spaces

With the GE AEM05LX Window Air Conditioner you don’t have to sweat the heat this summer. With this unit you’ll have all the cooling power you want to keep your room just the right temperature. It is used to cool small room, up to 150 square feet, by delivering 5200 BTUs. This GE 115 Volt Window Air Conditioner is robust and efficient product for cooling your small room in no time.

This Energy Star Qualified unit of GE also features energy saver mode that shuts off the compressor temporarily when the room is cool enough, and it saves your time and money. This window unit features 3 fan speeds and 3 cooling fans designed to give you comfort just the way you like it. Its other helpful functions are Ez Mount installation, that can cool your room in no time, a 24 hours on/off timer, just turn it on and forget it, an Electronic digital thermostat and a remote control as well.

Mentioned below are few pros and cos of GE’s Window Air Conditioner.

Pros Cons
The most energy efficient air conditioner. It doesn’t have an auto-restart function.
The most powerful product that can cool small rooms in less time.
An easy to install and easy to use product.



GE AEM05LX Window Air Conditioner, without a doubt is PERFECT, which seems a perfect one word to describe it as it doesn’t have any proper cons. It offers every feature that should be in window air conditioner, so if you are a very specific and picky person when it comes to anything, congratulations because you have landed on the right place, it’s all you can have. This window air conditioner is one of the best sellers in market, as it is energy efficient, durable, tough, easy to install and do quick functioning, in every temperature. It is an energy saver plus it is super easy to clean. You should not wait any longer and absolutely go for this window air conditioner because we know, if you are searching for small room, it is the only one that suits your need.

Keystone Window-Mounted Air Conditioner

Keystone 5000 BTU air conditioner for small room


This model of Keystone with ‘follow me’ remote control is perfect for cooling a room up to 150 sq. ft. by delivering 5000 BTUs. It also features dehumidification, up to 1.3 pints per hour, for the removal of excess moisture from the environment. Its allows LED display so you can easily select options with a single touch of a button. It’s LCD remote control sense the temperature and can be controlled from across the room. The best feature of this model is that when power is restored to the unit, its Auto-restart has saved your previous settings.

Its 2-way air flow direction allows you to control the direction of the cool air, easily. And for cooling flexibility it contains 3 cooling speeds and 3 fan speeds. Just set your schedule and programmable 24-hour on/off timer will do the rest of the work. After activating the sleep mode, it gradually increases your room temperature. It is an energy saver; saves you handsome money.

It is also very easy to clean with its tilt-out mesh filter. Any how an amazing and appreciable product of Keystone.

Few pros and cons of Keystone Window-Mounted Air Conditioner.

Pros Cons
Easy to install. Instructions given are little vague.
Great Size for small rooms with good weight.
High quality product.
Outstanding Value



This window air conditioner serves as a great companion for you in summer, if you are a keen indoor person, and an amazing product if you are living in a hot area. You should consider it a must have window air conditioner if you are looking for a unit with plenty of features as it can offers so many best features. It is just perfect if you want it for small area because it can cool space that is up to 150 square feet. This AC is super easy to use and does not weigh heavy, you can pack it easily in winters. Also is made out of high quality products which is way it is long lasting, sturdy, tough and durable. So, reach out for this window air conditioner as soon as possible because we have limited stock.


Thoughts turn to chilling out, when the weather heats up. Central air conditioning is a really fancy option. Room air conditioners, also known as window air conditioners, can be an economical and energy-efficient alternative for cooling one or two rooms. So now you must be looking for the best window air conditioners around? Well, you are lucky because we spent days searching and analyzing some of the perfect, coolest, affordable and highest-rated window units around, finding the best for you. All of these mentioned window units are just awesome for small rooms and they have many of the greatest features. Here are some points you should consider, while buying window AC for your small room, with little description about them, for this going to be easy for you.


Before you check price and features, start by deciding the size of unit you need, for the space you want to cool, as well as where you want to place the unit. The window air conditioners have cooling capacities ranging from 5000 to 12500 British thermal units (Btu) but it’s up to you weather you want it for small room or halls.


Some of the new room air conditioners, are energy star, come with better insulating machinery and clearer instructions that helps you to get a good seal around the unit, minimizing leaks.


Most Air conditioners are kind of noisy and they could disturb light sleepers when set on low and are distracting to all when set on high, so look for a model that does not make much noise. However, little sound of fan running is still unsettled in new models too.


For even cooling of room, your window should be on the center of the wall. Some of them have fan arms that swivel. Window air conditioners usually blow air in one direction, so check if your window is not in center than where it needs to blow air, right or left?


Your unit must be installed properly. Most units are designed for double-hung windows. But if your window is casement window then consider buying a through-the-wall air conditioner. Make sure your window unit is level so that it discharge water, correctly.


The cleanliness of your unit is something you have to do frequently, to keep it safe and long lasting. So, your access to the filter must be easy.


Most of the latest units are very smarter, they allow you to adjust and control them from smartphones. Some of them can be interlinked to other units in home. Try to find something that would be east to use.


Some units have longer warrantied than others. When you are purchasing a new unit, check the manufacturer’s website for information, and search in unit’s booklet about the warranty of model you are considering buying.

Wrapping it up

We listed the best and top selling window air conditioners for small rooms above. All of them are top rated window units and are leading and ideal units for small rooms or spaces, like studies, home libraries and small labs. They hardly have any cons plus they can be utilized in any small portion, as they all are portable, easy to install and uninstall. Each and every one of these are long lasting, tough, resistant, robust and are in excellent order.

And with this rapid changing of atmosphere, people love to stick around, with an air conditioner, in summers. They are now a very main part of our lives, especially in summers, while all of this is happening, better and more featured units are jumping in to help people for better. These all have exceptional features and affordable prices to help you have the best possible experience without really considering the price tags to bother you. We hope you find the best one for you and you won’t regret or repent buying any of these because they are so worth every single penny.

Write a Comment