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3.8 | 13 Reviews

24,500 BTU Smart Wi-Fi Enabled Window Air Conditioner

LG LW2521ERSM

Features

  • Cool down your desired space with this 24,500 BTU Air Conditioner
  • Stay comfortable with this LG Air Conditioner that cools up to 1,550 square feet
  • Control key features of your Wi-Fi enabled air conditioner with the ThinQ app
  • Choose your perfect temp with high, mid and low modes for cooling and fan speed

Quick Specs

  • Type: Air Conditioner
  • Style: Window/wall Air Conditioner
  • Width: 25.98"
  • Height: 17.68"
  • Depth: 28.11"
  • Energy Star Rated: No
  • Cooling Power: 24500 BTUs

See More

 
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Maximum Cooling

LG Window Air Conditioners provide exceptional cooling power that will keep you and your family cool, comfortable, and in control.

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Made to Perfection

LG Window Air Conditioners add powerful performance and stable durability to perfectly match your window frame.

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Maximum Usability

Operate with LED display and simple selection control panel, up/down temperature adjustments, and fan speed selection, using the full-featured remote without leaving your bed, workspace, or couch.

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3-in-1 Operation

Use cool mode for powerful cooling and dehumidifying on hot days. In fan mode, the fan circulates the air in the room. Dry mode is ideal for damp, rainy days.

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Quiet Operation

LG Window Air Conditioners operate at quiet sound (when in low mode) eliminating unnecessary noise for smooth operation that you'll barely notice.

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Control Your Cool From Anywhere

Control key air conditioner features from your phone or favorite smart speaker with the ThinQ® app.

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Installation Made Easy

This unit comes with our simple and convenient installation kit, so you can set up your air conditioner with ease.

Maximum Cooling LG Window Air Conditioners provide exceptional cooling power that will keep you and your family cool, comfortable, and in control.

Made to Perfection LG Window Air Conditioners add powerful performance and stable durability to perfectly match your window frame.

Maximum Usability Operate with LED display and simple selection control panel, up/down temperature adjustments, and fan speed selection, using the full-featured remote without leaving your bed, workspace, or couch.

3-in-1 Operation Use cool mode for powerful cooling and dehumidifying on hot days. In fan mode, the fan circulates the air in the room. Dry mode is ideal for damp, rainy days.

Quiet Operation LG Window Air Conditioners operate at quiet sound (when in low mode) eliminating unnecessary noise for smooth operation that you'll barely notice.

Control Your Cool From Anywhere Control key air conditioner features from your phone or favorite smart speaker with the ThinQ® app.

Installation Made Easy This unit comes with our simple and convenient installation kit, so you can set up your air conditioner with ease.

Features

  • Cool down your desired space with this 24,500 BTU Air Conditioner
  • Stay comfortable with this LG Air Conditioner that cools up to 1,550 square feet
  • Control key features of your Wi-Fi enabled air conditioner with the ThinQ app
  • Choose your perfect temp with high, mid and low modes for cooling and fan speed
  • The Clean Filter Alert lets you know when it's time to clean. Simply remove the filter to wash
  • Reduce power consumption with the Energy Saver Function
  • Automatically restarts minutes after power is restored when a power failure occurs
  • 208 /230 Voltage allows for efficient cooling
COMPONENTS
Cord Length 52"
COMPRESSOR
Compressor Rotary
Displacement (cm^3 / rev) 21.8
OLP Internal
Refrigerant R32
DIMENSIONS/WEIGHT
Fits Windows 29"-41" W x 19" H
Net Weight (lbs.) 130 lbs
Product Depth 28.11"
Product Height 17.68"
Product Width 25.98"
Shipping Depth 30.51"
Shipping Height 22.44"
Shipping Weight (lbs.) 146 lbs
Shipping Width 29.13"
ELECTRICAL RATINGS
Plug Type 208/230/15 Amp
Rated Amps (Cooling) 11.8/10.9
Voltage / 60 Hz 208/230V
Watts (Cooling) 2, 330/2, 370
FEATURES
Air Deflection 4-Way
Air Discharge Type Top Discharge
Auto Restart Yes
Chassis Type Slide In-Out
Energy Saver Function Yes
Fan Speed Heating 3
Fan Speed Only 3
Filter Alarm Function Yes
Indoor Fan Type Turbo
Remote Control Yes
Thermostat Control Thermistor
Timer 24 Hr, On/Off
Wi-Fi Connection Yes
PERFORMANCE
BTU performance (Cooling) 24,000/24,500
CEER 10.3/10.3
dBA Level (High/Mid/Low/Sleep) 65/63/61
Dehumid. (Pts/Hr) 7.7
Dry Air Flow (CFM) 530
Est. Cooling Area (Sq. Ft.) 1550
SUMMARY
Capacity (Cooling) 24, 000/24, 500
Type Window Air Conditioner
UPC CODES
UPC 048231605069
WARRANTY
Parts & Labor 1 Year

Quick Specs


  • Appearance

  • Type: Air Conditioner
  • Style: Window/wall Air Conditioner

  • Dimensions

  • Width: 25.98"
  • Height: 17.68"
  • Depth: 28.11"

  • Features

  • Energy Star Rated: No

  • Cooling Capacity

  • Cooling Power: 24500 BTUs

Professional delivery and installation is available for every product we sell. We would be happy to coordinate delivery and installation for you.

Extended warranties are usually very inexpensive and can save you thousands in the future. Some can even cover extra costs that result, such as cost of food that spoils when your fridge dies. It's simple and inexpensive to purchase extended warranties and one of the smartest ways to protect your investment.

Appliances can be large, heavy and expensive. You probably don't have the special tools or expertise needed to fix them in a crisis. If you can spare a few thousand dollars without batting an eyelash for new appliances should they break tomorrow, don't buy a warranty. But if you're like most of us, protect yourself by purchasing inexpensive extended warranties when you buy a new product and save yourself big money in the long run.

3.8 out of 5

61% of reviewers recommend this product.

3 Stars

Good machine until its not

Sandstone 7/18/2024

Good a/c. Looks nice in my home and works great. Until it quits cooling after having it only 13 months. I used my extended warranty for repair but after one month of run around I still have no a/c. The tech deemed it unrepairable leaking Freon promptly but LG doesnt replace it. They say its been approved but keep saying wait 7-10 business days for your replacement . I must be your most disappointed customer alive. Over 70 years old post-surgery and in 100 degree heat.
Originally posted on lg.com

No, I do not recommend this product

Features

 

Quality

 

Value

 
5 Stars

So far so good.

JMWW 6/19/2024

While it required an electrician to come in and install the special outlet so far its producing a really exceptional amount of cooling to our commercial kitchen.
Originally posted on lg.com

Yes, I recommend this product

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Value

 
4 Stars

i like that the lcd is always on

lg white living room 5/22/2024

i bought this lg a few weeks ago bc my old frigidaire only lasted one year and 6 months and custumer service was no help i gave it a 4 star bc is lacking a bit of btus my old unit was 25500 and cooled a little better ... im not putting the lg down but maybe they could make a bigger unit for some old homes
Originally posted on lg.com

Yes, I recommend this product

 Incentivized Review

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5 Stars

Great buy

Dale 53 10/21/2023

This is a great product and Im so glad I purchased it. Its exactly what I needed for my home
Originally posted on lg.com

Yes, I recommend this product

 Incentivized Review

5 Stars

Great Product

Bungalow Owner 10/12/2023

I had to buy a new air conditioner during one of the hottest weeks this summer. I must say that this air conditioner works great I like the timer feature and how much quieter it is from my old one. I would recommend this model.
Originally posted on lg.com

Yes, I recommend this product

 Incentivized Review

5 Stars

It is very powerful and a good looking machine

rorosen 9/24/2023

I have this air conditioner a short time but so far it has been excellent
Originally posted on lg.com

Yes, I recommend this product

 Incentivized Review

5 Stars

It is very powerful and a nice looking machine

rorosen 9/24/2023

We have this air conditioner a short time but so far it has been excellent.
Originally posted on lg.com

Yes, I recommend this product

 Incentivized Review

2 Stars

Lemon Unit

Jamesoo700 9/15/2023

Unit worked great the first month. Then the unit didnt work like it did when purchased. After three months it started iceing up. It stopped cooling and had to have the repair man come to gat my money back.
Originally posted on lg.com

No, I do not recommend this product

 Incentivized Review

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Value

 
5 Stars

This unit has great features that enhance the perf

El Diablo 9/9/2023

I bought this unit several months ago and it functions as expected. This is the second one in 11 years and I have been pleased with both units. They are quiet and cool efficiently.
Originally posted on lg.com

Yes, I recommend this product

3 Stars

This LG Product cools very effectively but......

JD141414 8/20/2023

This LG product cools very effectively but is much louder than my old Freidrich...But even those arent as well-made as they used to be but then what is?
Originally posted on lg.com

No, I do not recommend this product

Features

 

Quality

 

Value

 
2 Stars

Wifi connect

Brenda Whitney 7/29/2023

Cant not get it to connect says its wrong info but it doesnt offer me any other options
Originally posted on lg.com

No, I do not recommend this product

 Incentivized Review

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Value

 
5 Stars

GREAT A/C UNIT

BK23 7/17/2023

UNIT WORKS RIGHT OUT OF THE BOX NO ISSUES WIFI FEATURE IS PRICELESS TO ME AND ALSO WORKS WITHOUT ANY ISSUES
Originally posted on lg.com

Yes, I recommend this product

 Incentivized Review

Features

 

Quality

 

Value

 
1 Stars

Not what I expected from a new LG AC unit

ChrisVeryUnhappy 7/6/2023

I bought my LW2521ERSM because I needed the largest unit I could find that would fit a window. This one fit the bill and worked well for the first season albeit much more loud than I expected. About two months into the current season about 11 months since I purchased it and still under warranty I started having problems. First it froze up and I unplugged it for a while to melt then when plugged back in the compressor would keep running when the power was turned off on the control panel. Turns out the control board main relay went bad. I would have thought that the description of the problem would be sufficient to determine the parts needed. Instead I had to wait for a week and a half for a service technician to show up and diagnose the problem but I was assuming he would already have the correct repair parts on hand. From my past experiences working with AC systems and appliances I was able to figure out what the problem was on my own so I figured the same would apply for LG and the service company but that wasnt the case. The technician did order the needed parts control module and they arrived about two days later. Now the bigger problem for me was that the weather was hot and I needed to have working AC soon. However the technician was only in my area on Mondays. That would have been something I could have worked with since I had to purchase additional window units as a workaround but it gets worse. The following Monday was a non-working holiday for the repair company. The Monday after that is apparently inventory day for the technicians so that placed my next visit for getting the parts installed the week after that right at a month after the problem first occurred. Knowing that I would likely experience this same issue in the future I decided to locate the control board to have on hand. I was disappointed to find that he board has had several revisions and is currently extremely hard to locate. That tells me that the part is in very high demand and that it is a common failure point for larger LG window units. The control module I received was apparently removed from another unit probably a new pull part which further confirms the scarcity of control board inside the control module housing. I still havent been able to source the correct part on my own and Im still waiting for the repairs to my unit to be completed. Unacceptable I am unable to select any other answer in order to be entered into the sweepstakes but I did NOT receive this product free or at a discounted price in exchange for my honest opinion but would like to receive a sweepstakes entry for my review.
Originally posted on lg.com

No, I do not recommend this product

 Incentivized Review

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Value