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LG

LG 14000 BTU Window Air Conditioners Remote Control WiFi Enabled App Ultra-Quiet Washable Filter Cools 700Sq.Ft for Large Room AC Unit air conditioner Easy Install White LW1521ERSM1

  • Based on 248 reviews
Condition: Used - Like New
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Availability: Only 1 left in stock, order soon!
Fulfilled by Amazon
Arrives Tuesday, Aug 18
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Size: 14000 BTU


Features

  • [Maximum Cooling] Cooling Coverage up to 700 Square ft. is ideal for cooling large to x-large rooms with 14,000 BTU window air conditioner for 1 room or space x large
  • [Easy Installation & Cleaning] This AC has a slide in & out chassis and installs easily in a double hung window (size W 27" - 39" x H 16") with included EZ Mount installation kit; slide-out filter makes cleaning a breeze to keeps your unit running its best when cleaned every 30 days
  • [Easy-to-Clean Washable Dust Filter] Capture dust from the air and keep your dehumidifier working efficiently with our easy-to-clean washable filter.
  • [Extra features] include a remote control, easy window installation kit, removable, washable dust filter and a check filter alert, Eco-friendly R32 refrigerant.

Description

The LG LW1521ERSM1 is a 14,000 BTU smart window air conditioner designed to efficiently cool spaces up to 700 square feet. With built-in Wi-Fi connectivity, you can control the unit remotely using the LG ThinQ app, Amazon Alexa, or Google Assistant, allowing you to adjust settings from anywhere for optimal comfort. This air conditioner offers three cooling and fan speeds, along with a 24-hour timer, enabling you to customize your cooling schedule to suit your needs. The 4-way air deflection system ensures even distribution of cool air throughout the room, enhancing overall comfort. Operating at sound levels as low as 50 decibels in low mode, the LW1521ERSM1 provides quiet operation, minimizing unnecessary noise for a peaceful environment. The unit also features an auto-restart function that automatically turns the air conditioner back on after a power outage, ensuring continuous cooling without manual intervention. Additional features include a user-friendly digital control panel, a remote control for convenient adjustments, and a slide-out, washable filter with a filter alarm function to maintain optimal performance. The LW1521ERSM1 is designed for easy installation in windows measuring 29 to 41 inches in width and at least 19 inches in height. With its combination of powerful cooling capabilities, smart connectivity, and user-friendly features, the LG LW1521ERSM1 is an excellent choice for maintaining a comfortable living space during hot weather.

Brand: LG


Capacity: 3.3 pints


Cooling Power: 14000 british thermal units


Special Feature: Dehumidifier, Dust Filter, Filter Light Reminder, Remote Controlled, WiFi Enabled


Product Dimensions: 22.21"D x 23.62"W x 15"H


Start year: 2023


Seasonal Energy Efficiency Ratio (SEER): 11.2


Color: Bright White


Voltage: 115 volts


Noise Level: 53 db


Cooling Power: 14000 british thermal units


Additional Features: Dehumidifier, Dust Filter, Filter Light Reminder, Remote Controlled, WiFi Enabled


Color: Bright White


Noise: 53 db


Refrigerant: R-32


Filter Type: Washable Filter


Inverter Type: No Inverter


Installation Type: Window


Compressor Type: rotary_scroll


Air Conditioner Application: Kitchen, Living Room, Bedroom


Core Material: Aluminium Alloy


Voltage: 115 volts


Power Source: Corded Electric


Wattage: 1260 watts


Item Dimensions D x W x H: 22.21"D x 23.62"W x 15"H


Item Weight: 82 pounds


Window Opening Maximum Width: 41 inches


Window Opening Minimum Height: 19 inches


Window Opening Minimum Width: 29 inches


Window Opening Maximum Height: 19 inches


Capacity: 3.3 pints


Floor Area: 700 square_feet


Room Type: Bedroom, Living Room


Form Factor: window


Brand Name: LG


Start Year: 2023


Model Name: Air Conditioner


Model Number: LW1521ERSM1


Unit Count: 1 Count


Included Components: Window installation kit(2 foam-PE, foam strip, curtain panel, 2 heatproof foam, 2 lower panel guide, window locking bracket, 2 sill bracket, 2 support bracket, screws, bolts, lock nuts)


Global Trade Identification Number: 85


UPC: 048231606585


Manufacturer: LG


Item Type Name: LG 14,000 BTU Window AC with WiFi & Remote, Voice Control, White


Warranty Description: 1-Year Limited


Seasonal Energy Efficiency Ratio (SEER): 11.2


Efficiency: 11.2


Annual Energy Consumption: 1250 watts


Air Flow Efficiency: 265 cubic_feet_per_minute_per_watt


Control Method: App, Remote, Touch, Voice


Number of Power Levels: 6


Operating Mode: Cooling


Warranty Type: Limited


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Tuesday, Aug 18

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

    • Love this brand!
Size: 14000 BTU
Works amazing, keeps the house cool, quiet, and not to heavy.
Reviewed in the United States on July 13, 2026 by Mel
    • Horrible Air Conditioner and Horrible Experience
Size: 14000 BTU
I am not one for leaving reviews, but as I sit here in over 100 degree weather and out hundreds of dollars, I am frustrated enough to need to share. We picked this air conditioning unit hoping it would be the perfect choice for our home and family. An air conditioner is an investment, but with the heat and worrying about my kids and animals it is necessary. I have reached out to LG to get help several times, but honestly I would like to just get a new one to replace this one or a full refund so I can find one elsewhere. We set it up, turned it on, and were met with warm air and what sounded like the power was almost flickering. Less than 10 minutes of run time and it shut off. It has not turned back on. We have replaced everything that is possible besides just the machine itself. I honestly think we were sent a defective machine and we are still suffering in this heat. There was also an absolutely disgusting smell when it was running, so strong that it made my kids nauseous, but when I spoke to them, every time they said it was normal. LG has always been a trusted brand for me, but this experience has completely ruined my opinion of them. Do not buy this air conditioner and I no longer recommend LG to anyone. I am disappointed that a trusted brand is no longer what I thought they were and miserable as we sit in this heat suffering. ... show more
Reviewed in the United States on July 6, 2026 by The Lees
    • Great Buy !!!
Size: 14000 BTU
Great AC, Will FREEZE YOU OUT ! THE ONLY PROBLEM WE HAD WAS THEY WANTED YOU TO SLIDE THE MOTOR OUT ON A TRAY AND TO SET IT UP AND IT GOT STUCK, BUT THE WIFE FIGURED OUT HOW TO ACCOMPLISH WHAT WAS WRONG.
Reviewed in the United States on June 25, 2026 by W Sabrina
    • LG Air conditioner
Size: 14000 BTU
It’s cools off the entire apartment. The product was slightly damaged. It’s very heavy. It’s not too loud. definitely worth the money though.
Reviewed in the United States on July 24, 2026 by Carroll megears
    • More powerful and effective than description implies
Size: 14000 BTU
This unit is a LOT more powerful than I thought. Way better performance than I think the product states. I measured the distance and with fan speed on the second setting (1-3 settings) I could feel the air 18 feet away as if I had a fan in front of me. The description undersells it. I, personally, found it difficult to set up but I'm not particularly mechanically inclined. It's heavy, for sure, but it has brackets to help support. I haven't seen the electric bill so I can't say what the value is specifically; however, it does have an eco setting that is well rated. The remote actually has all the functions of the unit panel itself which isn't as common as one would think. For noise, I haven't found it to be any louder than a regular fan. It generally fades into the white noise and helps drown out the outside noises of traffic and construction that increase with the summer months. ... show more
Reviewed in the United States on April 16, 2026 by Doc De Polloc
    • Functions perfectly, BUT ours had a defect.
Size: 14000 BTU
The AC works great, the sound is soft and not noisy, and the entire living room gets cooled quickly. However my specific model has a defect where the front grille doesn't snap into place at the bottom. We had to secure it with duck-tape to prevent the front of the AC from falling off. This was very disappointing. We are planning to return it. ... show more
Reviewed in the United States on July 25, 2026 by steven J
    • Don't be fooled
Size: 14000 BTU
This LG window AC is awesome, produces a quiet powerful cool that quickly cover a large area..I have to admit it I was sceptical it would get the job done as it didn't produce louder fan noise with my previous units. However, boy was I wrong...it's a quiet monster that really gets the job done..
Reviewed in the United States on June 15, 2026 by robdawg
    • Turns itself off
Size: 14000 BTU
I wanted to like this unit, it puts out plenty of cool air, doesn't make a ton of noise, and the app is nice to use. However, it's actual performance is lacking due to it not staying on. I'm not sure if it's poor placement of the thermostat, but it consistently turns itself off anytime the temperature outside is cool, regardless of how hot inside it is. It was easy to install, but I do not think it's worth the money. ... show more
Reviewed in the United States on June 13, 2024 by john

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