HomeBLOGAir ConditionersThe 8 Best Energy Efficient Window ACs

The 8 Best Energy Efficient Window ACs

When it comes to your home, you will want to use a window-based air conditioner to keep the entire area cool. However, you should also ensure it is energy efficient, so it will cost you less to run it than other cooling your house methods. If you want to know what you must consider when it comes to the models and how to make the right choice for your needs, then keep reading our comprehensive guide.

Top 8 Energy Efficient Window ACs 

There are so many models that you would pick and choose from when it comes to window air conditioners that are energy efficient. Here are 8 of the top ones to look at, including:

  1. Best Overall: MIDEA MAW08R1BWT EasyCool Window Air Conditioner 8,000BTU

MIDEA MAW08R1BWT EasyCool Window Air Conditioner 8,000BTU

For those who want the best of the best, this model is a great option, and it is ideal for a room of 350 square feet or smaller. This is an 8,000 BTU model that weighs 53.9 pounds and measures 16.02” x 18.54” x 13.39”. The controls and display are easily visible on the front panel of the machine, and there is also a remote control that is included with this model.

This also can be used in just the fan mode or even as a dehumidifier if you want to get the extra air out of your home.


  • Can be used a dehumidifier
  • Affordable
  • Cools down fast


  • Might need expert installation
  • Plastic parts can break easily


For those who will only buy the best, this model should be at the top of your list for numerous reasons, including ease to use.

  1. Runner Up: Midea U Inverter Window Air Conditioner 8,000BTU

Midea U Inverter Window Air Conditioner 8,000BTU

Another great model that you can check out that has a simple design and 8,000 BTU is this one. The buttons are the push-style ones to adjust the settings quickly and easily or adjust them using the specific application. This one is very quiet at 42 dB, which means you can easily install it in a bedroom without worrying about if it will wake you up or keep you awake at night.

This model has been given the ENERGY STAR rating which proves it is energy efficient and this one will be extremely simple to use.


  • Can be controlled by an application
  • ENERGY STAR rating
  • Sleek design


  • Expensive
  • No temperature display
  • Heavy


If you are looking for something that can be operated using the internet or even an application on your phone that won’t break the bank, then go ahead and look at this model.

  1. Best Budget Option: GE AHY10LZ Smart Window Air Conditioner with 10,000 BTU Cooling CapacityGE AHY10LZ Smart Window Air Conditioner with 10,000 BTU Cooling Capacity

If you don’t have a large budget, this will be the model to check out, and it has a 10,000 BTU output. The design is simple, and you can easily see the current temperature settings and make any changes on the touch control panel. This can also be controlled by voice-based commands using Alexa or Google or even the remote if you want to make it simple.

This also has the ENERGY STAR rating and it can deal with a room of around 450 square feet easily, which is perfect for a small apartment or bedroom.


  • Can be operated by voice commands
  • Affordable
  • Air filter is easy to clean


  • Internet isn’t easy to get set up
  • Unit can stop working


This is another option for those who want to have a smart home where you can control everything over your phone or through voice commands, so make sure to check it out.

  1. Quietest: Haier ESAQ406T 22″ Window Air ConditionerHaier ESAQ406T 22Window Air Conditioner

If the model being extremely quiet while operating is important, then you need to write this model down on your list. The control panel for this one is on the top, so you can easily get to it or use the remote part of the package. This is great for a small bedroom or apartment of around 200 square feet, and the design will be simple.

This has a timer that you can set for 24 hours and it has a cooling power of around 6,000 BTU.


  • Remote control included
  • Dehumidifier function
  • Energy efficient ratio of 12.2


  • Currently unavailable


If a brand is important and if you want something that will sound like it is off while it is operating, this might be the model that would fit all of your needs.

  1. Emerson Quiet Kool 5,000 BTU 115V Window Air ConditionerEmerson Quiet Kool 5,000 BTU 115V Window Air Conditioner

For those who need something easy to operate and use knobs instead of touch-based buttons, make sure to look at this model. This one is simple in terms of design and usage, and it has a cooling power of 5,000 BTU. This will be great to be used in a small bedroom that is 150 square feet or smaller, which means it can also be used in small apartments.

This one has a 1-year warranty for labor, 2 years for the parts, and 5 years for the compressor, which makes it great value for your money.


  • Affordable
  • Long warranty
  • Simple to operate


  • Can’t be operated by remote or smartphone application


For those who want something old school or a model that doesn’t require a smartphone or internet usage, then this one would be ideal.

  1. TOSOT 12,000 BTU Window Air Conditioner with Remote ControlTOSOT 12,000 BTU Window Air Conditioner with Remote Control

If you want something that can handle a larger room of around 550 square feet, then you should make sure to look at this one. It has an output of 12,000 BTU to cool down the room quickly without any problems, especially if it is smaller. It comes with remote control, and the touchpad controls are right on the front with the temperature display.

The thermostat for this device is found on the remote to easily read the temperature in different areas of the home.


  • Thermostat is in the remote
  • ENERGY STAR rating
  • Sleek and elegant design


  • Expensive
  • Heavy


This model will be great for those who want something with a sleek and elegant design that won’t stand out in any room where it is installed.

  1. TaoTronics TT-AC001 Window Air Conditioner 10000 BTUTaoTronics TT-AC001 Window Air Conditioner 10000 BTU

If having a remote and a self-timer for your air conditioner is important along with a unique design, then this one is going to be ideal for you. This has an output of around 10,000 BTU, and it will work well in a room of around 460 square feet. This is great for a smaller apartment or even a bedroom or office where you need something quiet to cool down the room.

The controls are easy to understand and access on the front panel of the machine, which makes this a great option for anyone.


  • Ideal for larger rooms
  • Easy to install
  • Very quiet


  • Expensive
  • Doesn’t turn back on after a power outage


If you don’t want something overly complicated, but just something that will work well and is ideal for larger rooms, then go ahead and check this model out.

  1. TCL 12W3E1-A 12,000 BTU window-air-conditionerTCL 12W3E1-A 12,000 BTU window-air-conditioner

The final model you should look at is this 12,000 BTU with a simple and easy-to-use design. The control panel is in the top left corner, and you can easily see the current temperature due to the bright LED lights. This is great for larger rooms of up to 550 square feet, which means it can even work for a medium or small-sized apartment or bedrooms.

There is a sleep mode that will allow the machine to use less energy and it has the ENERGY STAR rating.


  • ENERGY STAR rating
  • Sleep mode
  • Very quiet


  • Heavy
  • Might not work well right out of the box


If you are searching for something for a larger room, you need to make sure this model is on your list to compare it to the other options.

Energy Efficient ACs Buying Guide

It would help if you considered a lot when it comes to buying an air conditioner, especially energy-efficient. It might seem like a complicated choice, but if you know some of the factors and reasons to go energy-efficient, it can become easier. Here is everything you want to know about making the right choice, so go ahead and keep reading on.

Why It’s Smart to Go Efficient

If you are trying to cut down on the utility bills you are paying every month or can’t make any changes to the apartment or the home; you want to get a window-based model. However, you also want to pick an energy-efficient model since it will use less energy and save you more money. This will also be environmentally friendly, and you can lower the costs for your home and much more.

Cooling Power

One of the top things you need to look at when buying an air conditioner is the cooling power that the specific models might have. You can tell the cooling power of the machine by the number of BTUs that they have, and the higher the number, the more cooling power. This is also based on the tonnage of the machine, so think about the size of the room and then compare it to the BTU options you are getting.

What is Energy Efficiency Ratio (EER)?

You would also need to know what EER or the energy efficiency ratio will be for the various models you are looking at. These are most often used when trying to determine the smaller window-based air conditioner units’ energy efficiency. This isn’t going to help you know what your energy bills will be like, but it is a good comparison to look at since you want to have an EER of 12 or higher.

Tips for Further Reducing Your Energy Costs

If you are looking for an energy-efficient air conditioner that can fit in the window, then you are definitely searching for ways to lower your utility and energy bills. There are a few more tips that you can use that would help you with reducing these costs even lower, such as:

  • Unplugging unused devices – If there are any electronic devices that you aren’t using regularly, you should ensure that they are unplugged. This would prevent them from using any extra energy that could be chargeable, and this could include your phone charger, laptops, and much more.
  • Lower the heat – Also, during the colder months, it might seem like a smart idea to increase the heat temperature, but that can use a lot of energy. However, you can lower the temperature you are using and then keep the doors closed so that the heat isn’t escaping and going into rooms you aren’t using.
  • Turn off all lights – This might seem like a basic tip, but you need to ensure that the lights are always being turned off when leaving the room. It would help if you also looked at the light bulbs you are using to find a brand that would consume less energy, which means you would spend less money on your bills.
  • Smart technology – This option is becoming more and more widely used worldwide, and it is increasing because it can help save energy. You would be able to adjust the temperature in your home while you aren’t home or even turn off the devices. Consider using this and getting electronic devices that can connect to help you save even more.

These are just a few of the many tips that you would be able to use if you hope to save more energy and have lower utility bills. If you don’t know what they are, you won’t be able to use them, and you will continue to spend more money than is needed.


  • What is an ideal EER rating for a window air conditioner?

The perfect EER rating that you want to look for is around 12, a good number for the window systems. Some might have lower ratings, but you want to ideally go with one above 12 to ensure it is energy efficient.

  • Will it be more efficient in terms of energy to leave the machine running rather than turning it off?

If you are wondering if you will be able to save more energy by leaving the machine running than turning it on and off, you would be right. If you aren’t at home, then make sure to turn the temperature up or even turn it off. However, if you are at home, don’t turn it on and off, but adjust the temperature.

  • Can the window units be used to cool down my whole house?

These units are not normally used for cooling down the entire home but instead for a specific room or area. However, if you have a smaller apartment that doesn’t have as many rooms or square footage, you might do this.

  • How do I pick the right machine for my room size?

First, you should know how much square footage is in the room where you plan to have the machine installed. Once you know this, you can check out the models that would be suited for that space limitation. Each model would have a limitation for room size, so make sure to find the one that fits your needs.

  • What is the longevity of these models?

If you are thinking about how long you would have before you need to replace the window ac units, you should know how long they last. Normally these will last around 8 to 10 years with proper maintenance, including having them inspected every season before usage. You also need to make sure you are cleaning the filters to keep them operating properly.

  • Should I uninstall the device during the winter?

If you aren’t going to be using the device during the winter, which isn’t ideal since it can’t help with heating, then yes, you should uninstall it. This will prevent the machine from sustaining damage from inclement weather, and it will last you longer as well.


You must be checking out all the window-style air conditioners that are energy efficient. You would need to consider the size of the model you need and what would fit into the window, and the price. There are plenty of tips that you can use to reduce energy costs, including ensuring that all of the areas around the machines are sealed off to prevent leakage and much more.

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