There are a lot of air conditioners that might satisfy your need. But you might want to know answers like what is the biggest air conditioner? How does it operate? And, these are all kinds of random questions that keep us awake at night. 

On the other hand, if you need to cool down your place fast and need an air conditioner for a large room, you should buy the biggest air conditioner. Because the biggest air conditioners work fast when cooling down places up to 1,500+ sq ft.

What is the biggest air conditioner? In this blog, I’ll try to answer this question and many more common questions. 

What Is the Biggest Air Condiotioner

What Is The Biggest Air Conditioner There Is In The Market?

The FRIGIDAIRE FFRE253WAE is the biggest window air conditioner and is extremely energy efficient(EER rating above 10). This is the one in the market that can produce 25,000 BTU cooling output.

Any air conditioner’s size is expressed in BTUs or tons (1 ton = 12,000 BTU). Window air conditioners range in size from 5,000 to 24,000 BTU.

Anyone looking for an air conditioner with a capacity of more than 15,000 BTUs is looking for a large room unit. You can check more and compare with other slightly low configured air conditioners and see what’s in the bag.

What Is The Most Powerful Air Conditioner?

The biggest air conditioners can produce up to 25,000 BTU cooling output. That is enough for cooling down a room with more or less 15,000 sq ft. It works faster because of its cooling process. For these reasons, the biggest air conditioners are also the most powerful air conditioners.

There are currently a few air conditioners close to or equal to the cooling output of 25,000 BTU. Let’s look at what’s available on the market and see what they have to offer.

Other than FRIGIDAIRE, we have Koldfront WAC25001W. This model of koldfront air conditioner also has a cooling capacity of 25,000 BTU. It can cover up to 1,500 sq ft area, which is less than the Frigidaire’s one. And, it also has a lower EER rating that is 9.4. Frigidaire FFRE253WAE power input is 2430W (230V, 10.6A) while Koldfront’s WAC25001W power input is 2660W (230V, 11.3A).

We have LG LW2516ER on the list of powerful air conditioners. The cooling capacity of LG LW2516ER is 24,500, and it is able to cover up to 1,560 sq ft area. It also has a good EER rating of 10.3(CEER). The power input for LG LW2516ER is 2370W (230V, 10.9A).

We have another on the list of powerful air conditioners, which is AMANA AMAP242BW. The cooling capacity of AMANA AMAP242BW is 24,000 which is adequate for a large room and it can cover up to 1,500 sq ft area. It has a good EER rating of 10.4. The power input for AMANA AMAP242BW is 2300W (230V, 10A).

These are some powerful air conditioners currently available in the market. We’ll see more about them below. 

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1. FRIGIDAIRE FFRE253WAE: The Biggest Air Conditioner

We have to give Frigidaire credit for making the biggest and the best air conditioner for larger rooms. It’s really the only AC unit capable of producing a massive 25,000 BTU of cooling output while maintaining an excellent 10+ EER rating in terms of energy efficiency.

As we’re seeing, the largest window AC units have a cooling capacity of 24,000 BTUs; those are all 2-ton window AC units. FRIGIDAIRE FFRE253WAE boosts the cooling impact by 1,000 BTU. With that total capacity of 25,000 BTUs, it can suitably cool down large rooms with a joined space of up to 1,600 sq. ft.

The FRIGIDAIRE FFRE253WAE can do its work very efficiently. The FRIGIDAIRE FFRE253WAE needs only 2430W of electricity to produce 25,000 BTU or 2 1/12 tons. It has a fantastic 10.3 EER rating because it draws just a little more than 10 amps. When compared to traditional huge window AC units, this alone can save up to $500 in electricity costs during their lifetime.

Furthermore, the FRIGIDAIRE FFRE253WAE provides enough airflow to evenly distribute the generated cold air across the 1,600 sq ft spaces. Its maximum airflow of 460 CFM is significantly greater than the minimum 300 CFM to avoid the formation of undesired hot spaces.

2. Keystone Energy Star W25CKSTA: Your Budget-Friendly AC

The Keystone Energy Star is 25,000/24,700 BTU air conditioner with removable chassis for window and wall installation. This unit will not work with a standard 115V outlet. A Special 230-volt/20-amp electrical outlet is required to run this air conditioner.

Because of its cooling output, it can cool an area up to 1,500 sq ft. with dehumidification up to 5.7 pints per hour. Among other features, it includes adjustable 4-way air flow direction, Auto Cool for cooling flexibility, energy saver mode, sleep mode and a programmable 24-hour timer.

Keystone’s 25,000/24,700 BTU 230V window/wall air conditioner features a modular chassis that allows you to place it in a window or through an outside wall. Their two-in-one installation wonder comes with an adjustable window kit for easy window installation. 

You may utilize an existing suitable wall sleeve or buy one separately for wall installation. This product needs a 230-volt/20-amp electrical outlet and cannot be used with a typical 115V home outlet.

3. Koldfront WAC25001W: AC With Heater!

The Koldfront WAC25001W is another 25,000 BTU window air conditioner; this is the most BTU that any window AC unit on the market can produce. The difference between the 25,000 BTU Frigidaire and the Koldfront WAC25001W unit is that the latter consumes more energy.

In terms of overall wattage, the Koldfront WAC25001W is the most powerful window AC unit. Koldfront WAC25001W takes 2660W to produce 25,000 BTU. That is, it has a higher power output in terms of electrical input.

Nonetheless, the greater electricity input for the same amount of cooling effect implies that the Koldfront WAC25001W is less energy efficient than the #1 Frigidaire unit. It has an EER grade of 9.4 (below 10). That is, while it would produce a fantastic amount of cooling output, the power cost will be around 10% more.

However, the benefits of Koldfront WAC25001W are really beneficial. This is the most spacious window air conditioner with a heater. In the winter, the device has a heating output of 16,000 BTU.

Furthermore, this is a window AC unit for large rooms with high humidity levels. It boasts a record-breaking dehumidification rate of 137 pints per day, which is more than the combined output of two dehumidifiers.

The rated coverage area of the Koldfront WAC25001W is up to 1,500 square feet.

Overall, the Koldfront WAC25001W is the second 25,000 BTU window air conditioner for really big spaces. It does not, however, offer the remarkable energy efficiency that the Frigidaire unit has.

4. LG LW2516ER: For The Biggest Rooms!

LG has reputation for their HVAC business. We can rely on their products as they are reliable and affordable. LG’s largest window air conditioner is the LG LW2516ER. It can provide 24,500 BTUs of cooling output and is Energy Star certified.

Energy Star accreditation is only given to units that use the least amount of energy. LG LW2516ER takes 2370W of power to produce 24,500 BTU. That implies its total EER rating is 10.3. To summarize, the biggest LG window air conditioner is very energy-efficient and reduces power expenditures.

With a covering area of 1,560 sq ft, you’ll need a lot of airflow for even cooling. LG experts designed the LG LW2516ER as the largest window air conditioner with the most airflow. The LG unit does not provide the requisite 300 CFM airflow. In fact, when set at the maximum fan speed, it can produce 530 CFM. No other room air conditioner can provide 500+ CFM airflow.

Overall, the LG LW2516ER is a large 2-ton+ Energy Star window air conditioner with the most airflow. It has a total covering an area of 1,560 square feet and will suitably chill rooms.

5. Cooper & Hunter Mia NG Series: High 17 SEER Mini-Split AC

The Cooper & Hunter CH-NG24MIA230VI/O is a 24,000 BTU air conditioner, heater and de-humidifier! It is highly efficient, very quiet, and composed of high-quality materials. 

The condenser is protected from the salty air, rain, and other corrosive factors thanks to the unique Anti-Corrosive Gold-Fin Coating. By expediting the defrost process, the golden hydrophilic condenser enhances heating efficiency. 

This single zone mini-split unit can heat and cool up to 1500 square feet. Cooper & Hunter MIA NG has remarkable characteristics such as low ambient heating down to 5°F and cooling up to 122°F, as well as programmable infrared remote-control settings.

It offers inverter technology, turbo function, silent function, auto-swing, comfortable sleep mode, multiple fan speeds, self-cleaning function, carbon filter and timer.

6. AMANA AMAP242BW: Top Rated Air Conditioner For Bigger Room

This large window AC unit takes only 2,300W of power to provide 24,000 BTUs of cooling output. If you compute the EER rating, you will find that it is 10.4. There is no other window air conditioner with a better EER rating for large rooms. The AMANA AMAP242BW is thus the most energy-efficient window air conditioner for big spaces.

The AMANA AMAP242BW provides 447 CFM of airflow to disperse all of that cooled air. That’s more than enough to spread all of the created cold air evenly and appropriately across many rooms. With a covering area of 1,500 square feet, you may use this single large window AC unit to chill up to six rooms.

Overall, the AMANA AMAP242BW is the most energy-efficient 2-ton window air conditioner on the market. As a result, it’s one of the most popular large pieces you may put on your window ledge.

Now, let’s see some FAQs.

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What Is The Largest Air Conditioner In The World?

The IDCP, with a capacity of 130,000 tons, is the world’s biggest district cooling plant, with at least double the capacity of the next largest chiller plant in the Middle East.

In the Middle East, it might be possible to live without an air conditioner but it probably wouldn’t be enjoyable. Because of the desert, it can be very hot and sunny in summer. So, to make their lives easier and to save yourself from the scorching heat, it is a good idea to buy an air conditioner. 

When an ac unit is weighing more than 5 tons, it is used as a commercial unit. Very huge units are not suitable for domestic installation. If your property requires a unit that weighs more than 5 tons, your HVAC contractor will install two units to meet your cooling demands.

The most common central air conditioner size that works for the majority of residential houses is a 2 or 2.5-ton unit.

What Is The Biggest 115V/120V Window Air Conditioner?

The Emerson Quiet Kool EARC15RE1 is one of the few 15,000 BTU window air conditioners that operate on 115V. It has the largest BTU output for a 115V window air conditioner.

This air conditioner can also be used as a thru-wall unit. It effectively cools the bedroom and is rather quiet. However, it is not recommended for larger rooms because it doesn’t give that much cooling output as the one’s above. You might consider it for your bedroom.

The LG LW1516ER is also a 15,000 BTU unit. It is large and they come for a 110-115 volt standard residential socket. This one has an EER rating of 11.9 and a CEER rating of 11.8. It is estimated that it can cool about 800 sq ft area. This model includes some features like timer, remote control, outdoor exhaust/vent, filter alarm function, washable air filter etc.

What Is A 115V Air Conditioner?

The usual household voltage in most houses is 120 volts. The power provider provides your house with two 120-volt wires, or legs, of electrical energy. Wires connected to conventional outlets in your walls are 120 volts and can power 110-volt or 115-volt air conditioners.

What Is The Difference Between 110V And 115V?

The difference between 110V and 115V circuits is something you don’t need to worry about. It’s negligible. Your home’s outlets are structured to 120V, but owing to a variety of situations such as line length and distance from the grid, you may only get 110V to 115V. In reality, this has no bearing on how you may utilize the outlet.

Can You Plug A 115V Appliance Into 110V Outlet?

You can plug a 115V appliance into a 110V outlet. You can do it without hesitation because no more work is required.

You can also plug a 110V plug into a 120V outlet. You may safely connect it to any regular outlet. Electricity companies in the United States must provide 110 to 120 volts A.C. at 60 hertz. All appliances can run on a minimum of 110 volts.


In this blog, we attempted to address some of the queries about bigger and larger air conditioners. Some of these air conditioners are utilized in business settings, while others are used in homes.

Whenever someone wants to buy an air conditioner, there can be a lot of options and a lot of things that they have to consider. We try to answer those questions when you get lost on the internet while surfing. 

Like this one, that is, what is the biggest air conditioner, we tried to answer other queries related to air conditioners on our website. 

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