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LG

LG 24,500 BTU Smart Window Air Conditioner, 230/208V, Cools Room up to 1560 Sq. Ft. for Bedrooms, Living Room, Apartments, with Remote, 3 Fan Speeds, 24-Hour Timer, White

  • Based on 17,170 reviews
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Availability: Only 7 left in stock, order soon!
Fulfilled by Buildcom
Arrives Sep 27 – Oct 8
Order within 4 hours and 45 minutes
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Size: 25000 BTU


Style: Wifi & High Efficiency


Color: White


Features

  • Low Noise Performance: This LG window air conditioner operates at sound levels as low as 50dB (in low mode) eliminating unnecessary noise
  • Multiple Speeds: This ac window unit has 3 cooling and fan speeds that allow you to customize your cooling with dehumidification up to 1.8 pints per hour
  • Cools Rooms up to 1560 Square Feet: This window unit is ideal for cooling large rooms (39' X 40'); With 1560 square feet cooling coverage, keep your bedroom, office, or multiple small rooms on the same floor comfortably cool with this window air conditioner
  • Features: This LG ac window unit features a user friendly digital control panel, filter check reminder light, power failure auto restart, and a 24-hour on/off timer; Remote and installation kit included

Description

Introducing the LG window air conditioner - the perfect blend of coolness and cutting-edge smart technology. Thanks to LG ThinQ, you can control your home's temperature with unparalleled ease. Whether you're at home or on the go, use your phone or voice commands through Amazon Alexa or Hey Google to conveniently cool your space. Designed for large rooms up to 1,560 sq. ft., this unit is impressively efficient and remarkably quiet. With 3 cooling and fan speeds, along with a 24-hour timer, you have complete control over creating a personalized cooling schedule that aligns with your lifestyle. The 4-way air deflection functionality ensures that the airflow can be directed precisely where it's needed, be it for cooling, dehumidifying, or circulating air to maintain maximum comfort. The auto restart feature will bring the window AC unit back to life as soon as power is restored after an outage, ensuring uninterrupted comfort. The remote control makes it a breeze to operate the unit from anywhere in the room, while the easy window installation kit simplifies setup. The slide-out filter can be effortlessly washed, and the check filter alert feature reminds you when it's time to give it a clean, ensuring optimal performance.

Brand: LG


Capacity: 7.7 Pints


Cooling Power: 24500 British Thermal Units


Special Feature: Filter Light Reminder, Remote Controlled, Silent Mode, WiFi Enabled


Product Dimensions: 28.11"D x 25.98"W x 17.68"H


BEE Star Rating: No


Start year: 2


Seasonal Energy Efficiency Ratio (SEER): 10.3


Color: White


Voltage: 230 Volts


Product Dimensions: 28.11 x 25.98 x 17.68 inches


Item Weight: 132 pounds


Manufacturer: LG Electronics


Item model number: LW2521ERSM


Form Factor: Window


Warranty Description: 1 year limited


Batteries required: Yes


Included Components: LW2521ERSM Window Air Conditioner; Window Installation kit; Remote control


Capacity: 7.7 Pints


Floor Area: 1560 Square Feet


Voltage: 230 Volts


Noise Level: 61 dB


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Sep 27 – Oct 8

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

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Top Amazon Reviews

    • Excellent value - works great!
Size: 10000 BTU Style: Cool Only 115V Color: White
I needed to replace an old a/c that was larger, heavier, and filled with mildew from being stored in the shed. I have a small home - only 600 sq. feet total, but the main area I need to cool is about half that -- my living/dining area. My previous unit was 15000 BTU, so I was nervous about going with only 10,000....but it cools the area just fine. While the bedroom/bath down the hall doesn't get "chilly", it really never did before, anyway. It does lower the temperature, and then a fan at night suffices for sleeping at that end of the house. The price on this was very reasonable, and when I ask for help to take it in and out, my helpers will be grateful that weighs about HALF what my old one did! It's an attractive unit, easy to pull out and clean the filter, and is fairly quiet. I also love that the remote works so well. I'm very happy with my purchase! ... show more
Reviewed in the United States on July 14, 2025 by presbygirl
    • Powerful, Quiet, and Reliable – This A/C Exceeded My Expectations
Size: 6000 BTU Style: Electronic & Standard Color: White
Review Image by María C María C
I absolutely love this window air conditioner. I already had the same model for over 3 years, and it’s still running perfectly, so I didn’t hesitate to get another one. 🔹 It cools the room very quickly, even in extreme heat. 🔹 Installation was easy, even for one person. 🔹 The filter is easy to remove and clean, which helps keep it running efficiently. 🔹 It comes with a very intuitive remote control, making it super convenient to adjust settings from anywhere. 🔹 Runs with low noise, which makes it perfect for sleeping or working. 🔹 It’s also energy-efficient, which is great if you use it daily. Overall, I’m very satisfied. It’s well-designed, powerful, and long-lasting. Highly recommended! ... show more
Reviewed in the United States on July 11, 2025 by María C María C
    • Maybe I got a lemon? Will you get one too?
Size: 12000 BTU Style: Electronic & High Efficiency Color: White
A big hello to all my fellow cool people, or should I say, wanting to be cool? I live in an older house with no central air. Having at least one room that is able to be kept very cold for my huskies is quite important. In the summer they can sleep downstairs in the living room with fans on, the circulation in the house from the fan in the attic keeps it decently cool there. I love to give them COLD temperatures all year round. I, too, enjoy being cool on hotter summer days. I have submitted this item for return the first day I just got it and had family help me install it. Why? This unit is a couple of thousand BTUs higher than a mobile Vremi unit I own [which has lost its efficiency after 1.5-2 years]. It does not even perform as good as that one. That was a shocker. Cold air does not emit from this AC. This was ensuring I had everything set proper. Proper mode, proper vent setting [it can be on or off of course if you want to circulate outside air], and the fact that this cools rooms up to 550 sq ft left me very surprised to see it not work, since the room I put it in is less than 300 sq ft. If I had a king or queen bed in this room, it would be the majority of the room. The air was mildly cool at best coming from the AC. I even took my shirt off and let the air from the AC hit my torso. Not cold. [60 degree setting] I decided to run some experiments. I ran the AC [again, proper mode and settings] from 60 degrees to 80 degrees in variance. There was no change in the temperature of the air coming from the LG AC. There was never a shift in the fan or power of the AC either, unless I changed the fan setting. Only F1 seemed to initiate any kind of substantial shift. By that all I mean is an audible noise. I was in the room with the AC for a couple of hours. It was not cooling the room. [Proper settings, room secure, etc.] I had no choice other than to return it. I even got a prompt saying they would give a partial refund. I would not even keep this AC if they fully refunded me, as it is NOT working. I don't expect an AC to cool a room in 10 seconds flat during warmer summer days, but it needs to move the needle. This has some bad reviews and some good reviews, you're taking your chance if you want to buy it. Maybe you will have better luck. As far as any positives I can say since I don't want to appear to be unreasonable here we go: The remote control works perfectly fine. I like the cosmetics of the AC and the control panel. As far as the noise level, it wasn't unreasonable. I left energy efficiency at 3 stars because I cannot speak to that after only having the AC for a day. If the AC had just worked, it would have been great. I was going to even try to return it for a like item to try another, but Amazon's auto-return instructions told me I could not do that. Anyway, hopefully my review could help sway you one way or another on a potential purchase. Be prepared to have to return it. Edit- Bought a 14,000 BTU GE model AC from a nearby store. Works like a charm. Air was super cool and the low setting was on par with this LG model high setting. Again, I probably got a faulty model, but that’s my experience. ... show more
Reviewed in the United States on June 20, 2022 by Tyler
    • Cools very well, Quiet, Front Cover is a bit Wonky.
Size: 15000 BTU Style: Wifi & High Efficiency Color: Bright White
This AC rocks! Lots of cooling power and pretty quiet. It cools my whole living room, hallway and kitchen, about a 600 square foot area, that gets lots of direct sunlight. Can't ask for much more at this price point. My only gripe is the front cover doesn't set properly in place, no matter what I try. The problem seems to be there isn't enough clearance for the power cord, I have it routed properly and through the notch in the cover. The unit I as far in the sleeve as it can go so I'm not sure what the issue is, maybe just the design? Anyway, even though the cover is still slightly pulled away at the lower right corner, it isn't really noticeable in my situation, so I can live with it. But thats why I give it 4 stars instead of 5. ... show more
Reviewed in the United States on June 28, 2025 by Edward De Laurot
    • Great replacement for Midea U and/or just a new buy - Works great- quiet and efficient
Size: 1 Count (Pack of 1) Style: Wi-Fi Color: Bright White
Have had this unit for a month after the Midea U recall forced a search for a replacement. It is a really good unit and meets my needs in a very hot humid climate for two upstairs rooms with many electronics in the home office/den. It is quite quiet on low and medium fan levels, and somewhat noisy on higher fan speed but have only utilized anything but low after getting the hang of its capabilities. Quick cooling and efficient dehumidification. App interface is good. Recommend this unit and think it will do a great job for you. Installation pretty straight forward and including removal of the old unit this replaced the total time to 'job done' was 1/2 hour about 15 minutes each step. Really like the design and clarity of the instructions. Recommended! ... show more
Reviewed in the United States on July 12, 2025 by M. Miller

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