11 Best Lightweight Window Air Conditioners 2021

Keeping your home cool during hot summers can be a bit challenging if you don’t have a good air conditioning unit.

Nonetheless, you can save yourself from the heat using the lightweight window air conditioners that we have highlighted below.

Moreover, these window air conditioners are easy to mount, and the best part is that they come with mounting kits, thus making them super convenient.

In addition to this, they are fully adjustable, so you can customize them to match your needs. Some units provide you with multiple modes that you can use in different scenarios.

As such, most of the window air conditioners on our review list have built-in dehumidifiers, which remove excess moisture from the air, making it more breathable.

11 Best Lightweight Window Air Conditioners

1. MIDEA MAW05M1BWT Window Air Conditioner

MIDEA MAW05M1BWT Window Air Conditioner

The window air conditioner from Midea is designed with your comfort in mind, so you can buy this unit having full assurance that it will keep your room cool.

This equipment has seven temperature settings that you can use depending on how cool or hot the room is.

Besides, you can maximize or minimize the cooling effect by simply turning the temperature dial. The dial has calibration markings that will guide you when making adjustments.

Plus, the included filter will ensure that air is free of airborne particles, odors, and other microscopic compounds that may cause respiratory complications.

And since the filter is washable, you will be able to use it multiple times before making a replacement.

This air conditioner has a cooling power of 5,000 BTUs and can effectively cool a 150 sq. ft. room.

In addition to this, the unit has two operational modes, which work in concert to ensure that the room stays conducive.

The vents are designed in such a way that the cool air is directed to every corner of the room. Thanks to its two-way design, you can customize the delivery without moving the air conditioner.

This equipment is energy efficient, so it will help you reduce your utility bills. More to this, it has a straightforward design and is also easy to install.

It comes with mounting accessories, so you won’t have any problem when attaching this unit to your window.

The fact that it is lightweight means it won’t damage the window frame, and neither will it break your window sill.

Nonetheless, you have to ensure that your window is wide enough to get the right fitment.

Pros
  • Fast cooling
  • Compact design
  • Reusable filter
Cons
  • Limited features

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2. LG LW1217ERSM Energy Star Window-Mounted Air Conditioner

LG LW1217ERSM Energy Star Window-Mounted Air Conditioner

LG presents you with an innovatively designed air conditioner that you can mount on your window in a matter of minutes.

This unit not only has amazing features but is also easy to use. The LG Energy Star features an auto-restart function, which allows the unit to power up automatically when the power returns after an outage.

To add to this, the control panel has a user-friendly design and is also fitted with a display that will show you the current room temperature.

By using LG’s SmartThinQ app, you will be able to control this air conditioner using your phone.

Through this, you can easily monitor the parameters and make the required changes while at the comfort of your seat.

The app is compatible with both android and iOS devices, thus making it convenient. This air conditioner is Wi-Fi enabled and can work with Google Assistant or Alexa.

Its compact and lightweight design makes it a suitable option for average-sized windows. Also, it requires no modifications during installation, so just about anyone can mount this unit to a window.

To make it even more efficient, the unit has a BTU rating of 12,000, so it can cool large rooms of up to 550 square feet.

This unit does not generate as much noise compared to most air conditioners on the market, so it won’t interfere with your sleep.

In fact, it only produces 52dB, thereby making it an ideal option for homes and apartments.

Pros
  • High quality
  • Designed to last
  • Comes with installation instructions
Cons
  • Not as lightweight compared to competitor models

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3. Frigidaire 5,000 BTU Window-Mounted Mini-Compact Air Conditioner

Frigidaire 5,000 BTU Window-Mounted Mini-Compact Air Conditioner

The mini-compact air conditioner from Frigidaire is also another unit that you can consider mounting on your window.

It has a dual-speed design, so you can adjust the fan according to your requirements. The rotary controls will give you quick access to the available functions, thus allowing you to make easy adjustments.

You can turn the temperature dial clockwise or counter-clockwise depending on your needs. This unit has a sturdily built mounting system, which offers maximum anchorage.

As such, the air conditioner won’t fall off from the window provided that you mount it correctly.

Additionally, the slide-out access has a reliable filter, which captures dust and other particles, so your air conditioner will operate smoothly without malfunctioning.

Moreover, the filter is washable, making it cost-effective. The other feature that is worth mentioning is that the unit won’t lose the settings that you have applied even when the power supply is interrupted.

This air conditioner has a strongly built housing to increase durability. It works efficiently, so your room will stay cool throughout the hot days.

Pros
  • Adjustable
  • Automatic restart
  • Quiet operation
Cons
  • No programmable timer

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4. GE AHV05LZ Window Air Conditioner

GE AHV05LZ Window Air Conditioner

With a cooling capacity of 5,050 BTUs, the GE AHV05LZ may just be the air conditioner that you need to keep your room cool.

The unit comes with a full installation kit, so you won’t have to buy the accessories separately when mounting the equipment.

Also, it has a built-in mechanical thermostat and a high-speed fan that will fill your room with cool air. The vents are fitted with removable filters for your convenience.

Furthermore, the mechanical controls are strategically placed to allow for quick and easy adjustments.

To add to this, the air conditioner is vented on all sides to maximize its overall performance. The fins on the upper vent are adjustable, so you can close or open the vents by simply sliding the plastic attachment.

When it comes to durability, you will be happy to know that the materials used in designing this unit are of superior quality.

Besides the outer casing is spray painted to prevent rust. Aside from that, the paint also protects the base material from corrosive elements.

This unit provides you with two cooling speeds, so you can apply the one that matches your needs. Plus, this air conditioner is not too narrow, and neither is it tall, so it can fit most windows.

Pros
  • Easy to install
  • Good quality
  • Conveniently designed
Cons
  • The controls are not digital

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5. Amazon Basics Window-Mounted Air Conditioner

Amazon Basics Window-Mounted Air Conditioner

The window-mounted air conditioner from Amazon Basics is one of the lightest units on the list.

In addition to this, it provides you with a long list of features that will help you keep your room cool and conducive.

Included is the kit is a mounting kit and other accessories that you can use during the installation process.

This unit fits most standard size windows and can particularly come in handy when cooling small rooms.

Due to its convenient size, you can even install this unit in your campervan. When you buy this air conditioner, you will also get side panels, which you can adjust to get the perfect fit for your window.

Since it has a two-way air direction, cool air will be circulated to all parts of the room, thus maximizing the cooling effect.

To add to its list of benefits, this air conditioner dehumidifies the air, hence making it breathable.

You can also adjust the air direction and the fan speed using the available controls. There are up to seven temperature settings that you can use.

This equipment is ideal for homes, offices, and any other that that may require the services of an air conditioner.

Pros
  • Rated at 5,000 BTUs
  • On/Off timer function
  • Has an auto-reset feature
Cons
  • Can a be a bit noisy when the fan is running

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6. TCL 8W3ER1-A Window Air Conditioner

TCL 8W3ER1-A Window Air Conditioner

TCL provides you with a powerful air conditioner, which can cool rooms that are up to 350 square feet.

The 8W3ER1-A will ensure that the room stays cool while keeping your utility bills low. Besides, the unit has a sleep mode, which you can use at night. What this function does is that it regulates the operations so that less power is used.

On the other hand, the eco-mode can prove useful during the day. This equipment comes with a remote control that will allow you to customize the functions without using the control panel.

The 24-hour timer will enable you to pre-set the most appropriate start-up times when using this unit.

You can direct the cool air to where it is needed the most, so the whole room will stay conducive.

To add to this, the unit is very easy to set up and also comes with an installation guide that will walk you through the whole process.

The installation kit has everything that you may need, so you won’t experience any difficulty when mounting the AC to your window.

Plus, the air conditioner is well protected by a filter, which prevents debris from interfering with the internal components and the fan.

More on the fan, it has three speeds that you can consider using. The manufacturer has combined efficiency and power to give you a reliable air conditioner that is worth everything that you will pay for.

Pros
  • Quiet performance
  • Energy Star-certified
  • Multi-mode
Cons
  • Takes time to cool large spaces

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7. Koldfront 10,000 BTU 115V Window Air Conditioner

Koldfront 10,000 BTU 115V Window Air Conditioner

Koldfront’s WAC10002WCO is also another high-performance air conditioner that you can count on.

It has multiple energy-saving features that will help you lower your electricity bill. For starters, it has a sleep mode, which is automatically triggered to minimize power consumption.

More to this, the system will issue alerts if the built-in filter gets dirty. The good thing about the filter is that it is washable, meaning that you can use it several times without contaminating the air that you are breathing.

This air conditioner can also remove excess moisture from the air, thereby leaving the room in good condition.

Users can conveniently adjust the airflow using the digital control panel. Moreover, the LCD screen will provide you with accurate temperature read-outs when cooling the room.

This unit can be installed in the bedroom, living area, study room, just to mention but a few. It will keep your room cool as long you mount it correctly.

When energy saver mode is engaged, the fan will cycle at intervals, thus lowering the temperature of the room without increasing your utility costs.

This equipment is designed to fit both large and medium-sized windows, so you won’t have to modify the window frame or the sill.

Before, buying this air conditioner, ensure that it matches the size of your window. If you do everything correctly, you will be able to install the unit in minutes.

To add to this, the air conditioner has a dependable mounting system, so you can rest assured that it will stay put.

Pros
  • Dehumidifying function
  • Louvered sides
  • Three fan speeds
Cons
  • Somewhat loud

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8. TOSOT 12,000 BTU Window Air Conditioner

TOSOT 12,000 BTU Window Air Conditioner

If you are looking to cool a large room, this is one of the air conditioners that you can go for. It has a high cooling capacity of 12,000 BTUs and can cool rooms that are between 450-550 sq. ft. wide.

Besides, the unit has a quick cooling function, so it will lower the temperature of your room within the shortest time possible.

The control panel is fitted with light-touch buttons that will allow you to adjust the settings according to your preference.

Aside from that, it comes with a remote, which will enable you to make the required changes while you are a few feet away.

The remote features an inbuilt thermostat, so the air conditioner will cool the room depending on the environment that the remote is in.

This unit has up to three modes that you can use when cooling your room. Apart from the air conditioning mode, this equipment can be used as a dehumidifier.

Additionally, there is a fan-only mode that will supply your room with fresh air continuously. And since the unit has a modern design, it can blend well with different décor styles.

The upper vents are louvered and are also adjustable, so you can control the airflow according to your cooling requirements.

You can use this air conditioner without worrying about the safety of your family because it has passed several safety tests.

Pros
  • Stylish design
  • UL-certified
  • Blows air in multiple directions
Cons
  • Can be a bit loud when operating on fan mode

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9. Haier 10,000 BTU 115-Volt Smart Window Air Conditioner

Haier 10,000 BTU 115-Volt Smart Window Air Conditioner

This unit comes with advanced features that will allow you to regulate the temperature of your room with ease.

The easy-to-use digital controls allow for fast and easy system adjustments when using the air conditioner.

In addition to this, the equipment has a wireless control function that allows users to make quick changes via Wi-Fi. This function also enables users to monitor and make adjustments to the unit through their phones.

With a dehumidification power of 2.7 pints/hour, you can rest easy knowing that this unit will effectively remove the excess moisture from your room.

Depending on your needs, you can set the fan speed at low, medium, or high. However, there is also an auto mode that regulates the speed automatically.

If you want to save more power, you can consider enabling the sleep mode. The package is also inclusive of side panels that you can install on your window to get the desired fit.

With up to three cool speeds that you can choose from, you will be able to lower the room temperature to the preferred level within a limited duration.

And the fact that it has a two-way wind direction makes it even more convenient because this allows you to adjust the airflow accordingly.

Pros
  • Easy installation
  • Fitted with a long power cord
  • Reusable filters
Cons
  • Vents are not louvered

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10. Friedrich CP05G10B Chill Series Window Air Conditioner

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The Friedrich-CP05G10B is an energy-saving air conditioner that is suitable for all homeowners.

It does not generate much noise, so it won’t wake you up in the middle of the night. Plus, it has up to 5,200 BTUs worth of cooling power, so it can effectively cool average size rooms without experiencing mechanical failures.

The vents on the front side are louvered to prevent the entry of dust and other particles that may damage the motor.

Also, the included power cord is not only long but is also flexible, so you can run it towards the left or right side.

With the help of the auto-sweep function, the unit can oscillate the louvered fins to either side, thereby increasing airflow. That way, cool air will be dispersed to all the areas that you want to cool.

The air filter on this unit has antimicrobial properties, so it won’t only filter out solid particles but will also purify the air for you.

By using the timer, you can program this air conditioner in whichever way that you want. The auto-restart function saves all user settings, so you won’t have to re-customize the unit after a power outage.

With this feature in place, you won’t have to power the air conditioner manually when the power resumes.

Most of the units that we have reviewed have a two-way air design but that does not apply to this equipment because it provides you with a four-way airflow system.

Pros
  • Ultra-quiet operation
  • Easy to operate
  • Residential-grade
Cons
  • The display does not have a dimmer

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11. Soleus Air Exclusive Energy Star Over the Sill Air Conditioner

Soleus Air Exclusive Energy Star Over the Sill Air Conditioner

The air conditioner by Soleus Air is somewhat unique compared to the units listed above in that it can work efficiently without being mounted on the window.

This is because it has a convenient saddle design, which allows it to sit firmly on the window sill. As such, you won’t have to use any tools when setting up this equipment.

To add to its convenience, it won’t block your window, so will have a full view of whatever is happening outside.

Since the compressor hangs out of the window, this unit will cool your room without making noise.

It also has a dry mode, which helps in dehumidifying the air. In fact, this unit can remove up to thirty pints of moisture from the air in a day.

You can easily customize the airflow using any of the available fan speeds. This unit requires minimal maintenance since you only have to wash the filter.

When you use the sleep mode, the fan will run quieter, allowing you to sleep peacefully at night.

In addition to having a user-friendly control panel, the air conditioner also comes with a remote, so all the functions will be at the user’s fingertips.

Pros
  • Automatic restart function
  • Self-contained
  • Safe for users
Cons
  • The condensation reservoir fills up easily in humid conditions

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Frequently Asked Questions

Do all window air conditioners have built-in thermostats?

Window air conditioners come in different designs, so some have thermostats while others don’t.

Why do some window air conditioners pool with water?

In a nutshell, this occurs when moisture condenses within the air conditioner, thus resulting in an overflow.

However, most air conditioners are fitted with powerful condensate pumps, which will prevent this from happening on a regular basis.

Are all window air conditioners mountable?

No. Some window air conditioners can work without being mounted on the window frame, so it will all depend on the design of the equipment that you are using.

Final Verdict

If your room is overheating, you can easily solve the problem using the window air conditioners in the list above.

The AC units that we have reviewed are not only safe for your family but also efficient when it comes to cooling.

To top it all up, they are lightweight and easy to install, so you won’t have to worry about anything when mounting these pieces of equipment to your window.

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