Back to LG 10,000 BTU Smart Window Air Conditioner, Cools up to 450 Sq. Ft., Smartphone and Voice Control works with LG ThinQ, Amazon Alexa and Hey Google, ENERGY STAR®, 3 Cool & Fan Speeds, 115V

Customer reviews

3 out of 5stars
(19 reviews)

Most helpful positive review

5.00 out of 5 stars review
Verified Purchaser
09/20/2021
Great Air Conditioner
The LG LW1521ERSM Air Conditioner is wonderful unit. We installed in our kitchen since it gets hot there more than any room in the house. Even hotter when we are cooking for family get together. This solves out issue. The LG LW1521ERSM is very easy to install. We followed the instruction step by step. This unit fits in our regular sized window. It is just the right size. It does not require any additional brace or bracket for the outside. Everything you needed is included. Operating this air conditioning is pretty simple. You can either use the control panel on the unit, use the remote, or connect it to your Alexa or Hey Google so you can just talk to it. That's pretty high tech if you ask me. The operation is very quiet. It is also a good looking air conditioner. Overall, we really like this air conditioner. It is perfect for our kitchen and most of all, it is ENERGY STAR™ Certified which is very important to us. We highly recommend it.
Mom2two

Most helpful negative review

1.00 out of 5 stars review
Verified Purchaser
09/22/2021
DO NOT BUY
First one installed. Worked 30 minutes. Used remote to turn off. Would not turn back on. GFCI would trip and reset, but unit would not power on. Thought it was a fluke so I had them ship me another one. Installed and this one lasted about 8 hours before it just lost power. Wouldn't power up, same as first. So, I got a refund and I am shipping this one back too. I previously had a 8,000 BTU window air conditioner that ran for months. Different brand though.
Dino
14 reviews
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  • 4.00 out of 5 stars review
    Verified Purchaser
    07/15/2022
    Great Air Conditioner
    Very nice AC. A little confusion on the instructions. The wifi feature is nice and I love how I can control it by my phone. Would give 5 ⭐ but the instructions was terrible.
    Ashlee
  • 4.00 out of 5 stars review
    Verified Purchaser
    06/26/2022
    Cooling Unit Updates unexpected pleasant outcome
    Two AC units were purchased. One was damaged and required returning to store. The return process was helpful. Thank you. The other unit was placed and is cooling the space very efficiently. The former unit was getting old and was truly less effective. Glad to make the change and update the window AC units. Anticipate Energy savings as well.
    Peter
  • 2.00 out of 5 stars review
    Verified Purchaser
    06/20/2022
    Not working
    I live in Louisiana where it is super hot. I bought this a/c to help the central air. It ran for about 1 hour and now it will not turn back on. Called a service repair man. We will see.
    BDadof3
  • 1.00 out of 5 stars review
    Verified Purchaser
    06/01/2022
    Disappointed
    I have two others of these units and they've been fabulous, but this one? Not so much. Granted, it looks like the grill on the back of the unit was damaged in transit and looked to be purely cosmetic so I didn't think it would impede the function of the unit. However, it powered on briefly, shut off, and now won't turn back on. We've done all the troubleshooting in the guide and even tried moving to make sure it wasn't just the outlet, but the unit is just dead. It took some time to install due to its size, so just be aware that it's not a super quick process. We've been so happy with our other LG units but this one is just an expensive dud. My advice would to be plug it in and make sure it runs for awhile (if possible) before installing it.
    Angela
  • 1.00 out of 5 stars review
    Verified Purchaser
    05/21/2022
    Dead after 10 months,used it for 2 months
    Junk Used it for two months did Not blow cold cold air out ,plugged it in first time following 10 months later does that work at all
    Attick2
  • 1.00 out of 5 stars review
    Verified Purchaser
    02/19/2022
    Don't buy this for the wifi.......doesn't work.
    If you are buying this for the wifi, don't do it. I bought 1 and the wifi wouldn't work. After chatting with LG, they told me to return it for a replacement. I did, and the 2nd one doesn't work either. Other than that, the a/c is good. I bought it as a larger replacement for a smaller LG unit. I was happy with both units
    Unknown
  • 5.00 out of 5 stars review
    Verified Purchaser
    12/31/2021
    Perfect AC and LOVE the WiFi feature!
    I read a lot of reviews on different units before making this purchase. Living in FL, you need a good AC that can hold up to our elements. This unit cools my room perfectly. I have the auto settings to turn off at 6:30 am (before work), and then turn on at 3:30 pm so my room is plenty cool when I get home. Also, it is sooo quiet. I am very happy with this unit!
    LawGurl74
  • 1.00 out of 5 stars review
    Verified Purchaser
    09/22/2021
    DO NOT BUY
    First one installed. Worked 30 minutes. Used remote to turn off. Would not turn back on. GFCI would trip and reset, but unit would not power on. Thought it was a fluke so I had them ship me another one. Installed and this one lasted about 8 hours before it just lost power. Wouldn't power up, same as first. So, I got a refund and I am shipping this one back too. I previously had a 8,000 BTU window air conditioner that ran for months. Different brand though.
    Dino
  • 5.00 out of 5 stars review
    Verified Purchaser
    09/20/2021
    Great Air Conditioner
    The LG LW1521ERSM Air Conditioner is wonderful unit. We installed in our kitchen since it gets hot there more than any room in the house. Even hotter when we are cooking for family get together. This solves out issue. The LG LW1521ERSM is very easy to install. We followed the instruction step by step. This unit fits in our regular sized window. It is just the right size. It does not require any additional brace or bracket for the outside. Everything you needed is included. Operating this air conditioning is pretty simple. You can either use the control panel on the unit, use the remote, or connect it to your Alexa or Hey Google so you can just talk to it. That's pretty high tech if you ask me. The operation is very quiet. It is also a good looking air conditioner. Overall, we really like this air conditioner. It is perfect for our kitchen and most of all, it is ENERGY STAR™ Certified which is very important to us. We highly recommend it.
    Mom2two
  • 5.00 out of 5 stars review
    Verified Purchaser
    08/24/2021
    Great unit for a great price
    I love this ac. It was purchased to replace a unit that was older. I went with a bigger size so I could get more square foot coverage. It is working great to cool my entire living room and kitchen. I would definitely recommend it to others. When it arrived it was a bit bigger than I originally thought. So if you have smaller windows take that into account.
    Alyssa
  • 5.00 out of 5 stars review
    Verified Purchaser
    08/01/2021
    Good air conditioner!!
    Fast shipping and arrived in perfect condition. We put it in and its working great. This was for a large bedroom so we are sleeping cool !! We've only had it for a few days so I cant say about how long it will last.
    Granny
  • 1.00 out of 5 stars review
    Verified Purchaser
    07/13/2021
    Dented ? usef
    Shipped 2wks after order placed We had paid fee for quicker delivery. one side air conditioner huge dent The inside cardboard box that contained the conditioner torn looked like producd Previously used sold and returned The outside shipping box looked like new. You knew air condition was used prior and returned by customer but sent to me anyway Very dissatisfied Weather has been hot
    Pat
  • 5.00 out of 5 stars review
    Verified Purchaser
    06/27/2021
    Great unit!
    So far is doing the job. Cools 2 rooms no problem.
    Nico32
  • 5.00 out of 5 stars review
    Verified Purchaser
    06/11/2021
    So far, so great!
    Bought this air conditioner just about a month ago. Previous AC purchases included better known higher priced brand names that worked nowhere near as well as this LG AC.. So simple to operate. My first time actually using a remote and it's so easy to figure out. I should've known it would work great because my LG TV works great too.
    Coachksr
  • 1.00 out of 5 stars review
    Verified Purchaser
    04/13/2021
    Loud noises after 4 months.
    1st year worked fine and cooled my living room well. The next year the motor has a loud sound and its not cooling as well as it did. I bought this last summer so it might have 4 months of use on it. For $499 it should last years in peak performance... less than one year and I feel like I got a dud.
    nsfw
  • 1.00 out of 5 stars review
    Verified Purchaser
    03/01/2021
    Wifi bells and whistles, does not cool adequately
    This 8,000 BTU should be cooling my bedroom. It is not. My room should be like a meat locker, I keep the air conditioner thermostat on 62 and do not use eco. I have to have cold air to sleep because of a lung condition. The thermostat shuts off, but it is certainly not 62 degrees in the room. Tried to keep the room cold when it was 50 degrees outside, just to see if it was working. No. Temp only got down to 70 degrees in my bedroom. My room is 375 square feet My last off brand 8,000 BTU kept my room like a Popsicle. Very disturbed that I paid this much money for a window unit that does not work as promised. Also had to pay installation fee since I am disabled. Return? What an issue. Would have to pay to have the thing taken out of the window in addition to shipping fees. Will never buy this brand again. Don't buy this if you need your room to stay very cold.
    Unknown
  • 5.00 out of 5 stars review
    Verified Purchaser
    01/03/2021
    Great A/C
    I bought this as a backup, and sometimes just for extra cooling in our kitchen. When our power goes out, I connect a generator to it and our refrigerator, and fan blows cool air into the living room. It met my needs wonderfully. It thermostat and energy-saving features are easy to grasp. It is a great window unit. Totally satisfied.
    Unknown
  • 4.00 out of 5 stars review
    Verified Purchaser
    12/10/2020
    Powerful window unit
    I've never had air conditioning before, and this window unit is a game changer. It is efficient and takes the edge off in several rooms of my largely open floor plan house. It is narrow enough that I was able to install it in a casement window (after removing the window from its frame). I didnt think i would take advantage of its wifi feature, but it did end up coming in handy many times.
    Unknown
  • 1.00 out of 5 stars review
    Verified Purchaser
    06/29/2019
    Do not buy if you are looking for a real smart AC
    Do not buy this air conditioner if you plan to use with smart modes or expect support from LG. Read recent reviews of the app on the Apple App Store. Most are negative. I've had 2 of these air conditioners for about a month and received no support from LG. The SmartThinQ app is truly garbage. Called several times to resolve issues with programming smart modes for 2 window AC units and emailed at least 7 times and still nothing. When they did respond 2 of those emails, the responses had nothing to do with the problem. I purchased these units solely because of the feature to have home, away, pleasant, sleep and vacation modes configured for the units. None of these modes are configurable. Just notes “airconditioner alert”. The app is also not compatible with IFTTT so if you want to set a mode to start if you enter a distance from your home, it is not possible. If you are looking for a smart air conditioner, look elsewhere.
    MarcD95