Your Ultimate Guide to Finding The Finest Window ACs (For Small To Large Homes)

There are some places where you can live without coolers much of the time. That being said, even in those places, there are also times when you might wish you had it. This is the perfect scenario for tiny ones.

A small AC is energy efficient. Some places you can live without them much of the time.

So, what are the best small window aircons? The first thing to view at the store is the level of BTU aircon and its size. Make sure to measure your window so you get the size that will fit. The BTUs will tell you how much power you’ll have to cool the room. A larger room will need a higher level. Check the noise level of the unit. Look at the controls and if there are timers or other automatic functions. Finally, consider the weight of the ac unit you’re looking at so you know how tough it might be to install them.

Let’s take a few minutes to look more in-depth at what you need to look for in the best small aircon, then we can talk about some that are currently being sold.

What Are the Smallest Window Air Conditioners In The Market?

Generally, you’ll be able to find a small 5,000 BTU aircon that is best for rooms no larger than 10 x 10 or 12 x 12. They shouldn’t cost you much, they’ll be lightweight and easy to install, but you’ll still be able to put them in the window so they won’t take up any of your room space.

You may find that it’s easier to get a larger aircon that is meant for more average-sized rooms. You don’t want to install one of those in a tiny room, though. Here’s why. Since they’re meant for cooling larger rooms, they’ll likely cool your room off too much, making it uncomfortable to be in. And in doing that, they’ll use more energy than needed to cool the room, thus driving your power bill up.

It is important to take into account the space you’re wanting to cool down. It will save you money, as well as be better for the planet as a whole.

A perfect scenario for ACs. A small one is energy efficient and can give you the comfort you want when things get hot outside.

How Do You Fit a Small Air Conditioner In A Tiny Space?

Sometimes, you’ll find that even the smallest windows will still have gaps around the unit after adding the side curtains these AC units come with. That’s ok. When you measure your window, you want to know the height and width of the opening. Then, look for the small aircon that is the closest match in height and width so you have the best fit. Once you slide it into the window opening, then you’ll address any gaps.

If you do need to fill in the gaps, the best thing to do is to push the aircon all the way up against one side of the window box. On the other side of the unit, you can use foam tape to close the gap between the aircon and the window frame.

So, what is the best small AC? Look at the level of BTU they have and their size.

What Should I Look For In Window Air Conditioners?

We’ve mentioned the BTU levels as being a highly important factor to look at when you’re shopping for the best option. If the room you’re trying to cool down is considered to be large, you’ll need to look for a higher-power unit. The opposite is true for smaller rooms. For instance, if you’re looking for an aircon to cool your living room that is anywhere from 350-650 square feet, you need to look at a 9,800-12,500 BTU. Also, look for features such as an LED display for easy monitoring, Wi-Fi capability for convenient control via smartphone or other devices, and an auto mode that adjusts settings automatically for optimal comfort.

Best Small Window Air Conditioners Options


MIDEA MAW05M1BWT Air Conditioner 5000 BTU with Mechanical Air Conditioner Controls


This type is ideal for small rooms like bedrooms or home offices. It’s a 5000 BTU AC that is easy to use and will cool the room quickly.

This type of aircon model is ideal for small rooms like bedrooms or home office departments. It’s a 5000 BTU aircon that is easy to use and will cool the room down quickly. You shouldn’t have to experience any trouble installing it with the accessories that are all included in your purchase. It’s meant for windows that are anywhere from 23-36 inches wide. It is rated highly for energy efficiency so your power bill shouldn’t change much.


  • Super affordable
  • Easy-to-read dials
  • Internal fan helps cool room faster
  • 7 temperature settings
  • Installation can be done by one person


  • Loud operation
  • No drain hole for built up water
  • Gaps in unit allow bugs into home


MIDEA U Inverter Small Air Conditioner 12,000 BTU, U-Shaped AC with Open Space Flexibility


MIDEA U Inverter AC 12,000 BTU. It is meant for cooling a larger room in your home like a living room or a den.

This 12,000 BTU aircon is meant for cooling a larger room in your home like a living room or a den. It runs quietly and efficiently so it saves you headaches and money. It comes with a remote and is enabled for Alexa voice control. It’s sort of pricier than the unit mentioned above, but you get a lot for your money.


  • Extra sturdy installation
  • Awarded ENERGY STAR efficiency certification
  • Whisper quiet mode operation
  • Smart control through WiFi
  • Window can still be opened after installation

The installation is sturdy due to the extra brackets that are included. Download the MideaAir app that lets you control your AC from anywhere.


  • Pricey
  • Heavy unit
  • Difficult to install
  • Instructions not well written


GE AHY10LZ Smart Small Air Conditioner with 10,000 BTU Cooling Capacity


GE AHY10LZ Smart AC. You can use it in a medium to large room.

You can use this 10,000 BTU unit in a medium to large room. It is WiFi enabled, so you can create a system and control this aircon with Alexa, your Google Assistant, or through Apple HomeKit. There are three different cooling speeds and fan speeds so your room can be cooled down quickly. This unit uses less energy than most of its competitors, too, so you can use it without running up your power bill. The mounting kit and included remote control are part of your purchase.”

Window Air Conditioners Pros:
  • ENERGY STAR certified which is a sign for efficiency
  • Easy installation
  • Digital controls
  • Smart functionality
  • Cools quickly

This AC has three different cooling speeds and fan speeds so your room can be cooled down quickly. It uses less energy than most of its competitors,. ENERGY STAR certified for efficiency, easy installation, digital smart functionality, cools quickly


  • Quite noisy
  • Temperature set points have too big of a range
  • Heavy


LG 12,000 BTU 230V Window-Mounted AIR Conditioner with 11,200 BTU Heat Function – Window Air Conditioners


You can cool a larger room with this LG 12,000 BTU AC. It can also function as a heater. You’ll need a 230V outlet to plug this AC into.

You can cool a larger room with this LG 12,000 BTU. It is energy efficient, showing two cooling speeds and fan settings. The cool thing about this LG thing is it can also function as a heater in the cold months. That means you’re getting much more for your money. It cools rooms quickly. The control panel is digital and easy to access and use. One thing to note is you’ll need a 230V outlet to plug this stock unit into.


  • Dual functionality
  • Easy-to-use control panel
  • Cools quickly
  • Energy efficient
  • Cools well with high ceilings
  • Easy clean washable filter

The power level as that determines the room size the AC will be able to cool effectively. Make sure to shop for the best small AC.


  • Runs a bit loud
  • Super heavy
  • The temperature fluctuates broadly from the set temp
Conclusion—Best Window Air Conditioners

The biggest consideration is the cooling power level because that’s what determines the size of the room the product will be able to cool effectively. Your living room will need something like a 12,000 BTU window unit to cool it down to a comfortable level quickly. From there, you want to look into the noise the unit makes, as well as the control panel and additional features. You also don’t want to forget to check out the weight of each unit you consider. Make sure to shop around and ask for recommendations so you can pick up the best small window aircons to fit your budget, too.

On the other hand, a portable aircon with eco mode on a hot day can provide relief while offering energy-saving benefits. Additionally, some are compatible with Amazon Alexa, allowing convenient control through voice commands.

Window Air Conditioners FAQs:

Quietest brand of window air conditioners?

Haier is the brand rated highest for quiet window aircons.

A small AC cooling down a den. What brand of small AC is the quietest? Haier is the highest for quiet small ACs.

Best window air conditioners? Top air conditioner

The best overall is the LG LW8016ER Energy Star Window Aircon.

Top 5 window-type air conditioner units?

  1. LG LW8016ER Energy Star Window Aircons
  2. 87050 Window Mini-Compact Aircons
  3. FFRA0511R1 Window-Mounted Aircons
  4. Energy Star Window Smart Room Aircons
  5. Cool Connect Smart Window Aircons

Window air conditioners BTU you need for a 12×12 room?

You’ll need about 6,000 BTU.

Put an air conditioner sideways in a window?

You cannot do this. Window aircons can be put on their sides for shipping. However, it is clear that they should never be installed that way. It messes up the dehumidification function they provide.

Cost of small window air conditioners?

They will usually cost you between $150 and $500.

A small AC can be put on their sides for shipping. However, it should never be installed sideways.
Window air conditioners that make less noise?

You can find a quiet one or even split type from Haier, LG, and Frigidaire. Window aircons, designed for less noise, typically do not incorporate windmill technology. However, they often come with adjustable panels to secure the unit in the window opening and may include a built-in dehumidifier for enhanced indoor comfort.

Frequently Asked Questions

What are the precautions for window air conditioners?

It is very important to follow certain safety guidelines. Make sure the BTU rating corresponds to the space’s cooling needs; for example, 8,000 BTU window aircons are typically adequate for cooling a 2 square footage space. Use the necessary electrical outlets to avoid overloading circuits and have the unit properly covered or sealed to prevent air leakage.

How long do you have to keep window air conditioners?

The duration for which you should keep window aircons depends on various factors. It is advisable to consult product reviews and the manufacturer’s recommendations and consider factors like the number of hour you plan to use it and the specific guidelines provided by the seller to figure out an appropriate timeframe.

Is it better to run window aircons all the time?

Do I need to close the windows for the aircon?

Does an aircon need to be in a window?

How do I protect my window aircons from dust?

Does window AC provide ventilation?

How long do window aircons need to sit after moving?

What are the precautions for window aircons?

Why do my window aircons turn on and off right away?

What happens if a window is open when AC is on?

How do I protect my window air conditioners from rain?

How do I clean the inside of window air conditioners without removing them?

Why does my window aircon compressor keep running when I turn it off?

Why is my window AC unit vibrating?

Last Updated on May 5, 2023 by Edwin Sinsona

DISCLAIMER (IMPORTANT): This information (including all text, images, audio, or other formats on is not intended to be a substitute for informed professional advice, diagnosis, endorsement or treatment. You should not take any action or avoid taking action without consulting a qualified professional.   Always seek the advice of your physician or other qualified health provider with any questions about medical conditions. Do not disregard professional medical advice or delay seeking advice or treatment because of something you have read here a

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