Hassle-free shopping with our 30-day return policy.
Hassle-free shopping with our 30-day return policy.
Trusted since 2012 — Greentoe is where smart shoppers save big!
Trusted since 2012 — Greentoe is where smart shoppers save big!
2754 offers placed in the last 24 hours.
2754 offers placed in the last 24 hours.
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Brand new & warranty-backed products from authorized retailers.
Name your price. Negotiate your deal. Save big on every purchase.
Name your price. Negotiate your deal. Save big on every purchase.
Hassle-free shopping with our 30-day return policy.
Hassle-free shopping with our 30-day return policy.
Trusted since 2012 — Greentoe is where smart shoppers save big!
Trusted since 2012 — Greentoe is where smart shoppers save big!
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LG LW1821ERSM
Model: LW1821ERSM
1/8
- Cooling Capacity (BTU): 18000
- Number of Cooling Speeds: 3
- Energy Star: Yes
- Plug Type: 6-15P
- Remote Control
- WiFi Connect
- Auto Restart
- SmartThinQ Works with Google Assistant/Amazon Alexa
- Smart Window Air Conditioner
- Google Assistant/Amazon Alexa in White
Authorized RetailersManufacturer warranty included
New Products OnlyWe never sell used merchandise
Free ShippingOn most items
30 Days Returns*Minimum return policy
As Seen On...
"Consumer Reporter Lynda Baquero shows a website where you can bid on the items you want, from the manufacturer of choice, and known within a day or two if your offer is accepted."View article
"Name Your Price for Gadgets on New 'Priceline for Tech' Site"View article
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"Consumer Reporter Lynda Baquero shows a website where you can bid on the items you want, from the manufacturer of choice, and known within a day or two if your offer is accepted."View article
"Name Your Price for Gadgets on New 'Priceline for Tech' Site"View article
What People Say...
JasGod
5/5
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5/5
Blowing the budget cause these deals are amazing
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5/5
Best price, easy process.
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5/5
Turntable Treasure
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5/5
Smoked
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5/5
OMG Green toe rocks
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5/5
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Like ebay but better!
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5/5
Best price!
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5/5
Leary at first, but...
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5/5
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Great selection, great prices, fast shipping!
"I found just the TV I was looking for at the best price! Easy to make the purchase, and the TV is brand new with a full factory warranty. Shipping was lightning-fast and the TV shipping box was packed inside another box, so it arrived in perfect condition. Highly recommended!"View article
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5/5
Easy!
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My only mistake was forgetting that Greentoe offers a lot more than just TVs! I recently purchased applioances elsewhere and afterward realized I should have checked Greentoe first.
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5/5
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5/5
Incredible Site & Service
"Absolutely fantastic site to get deals on items especially if you missed out on sales in the past. I cannot recommend Greentoe enough."View article
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5/5
Blowing the budget cause these deals are amazing
"Got a top tier sound bar and TV for the price I was going to get just the tv. Awesome Site!"View article
Specifications
Technical Details
| Auto Restart | Yes |
|---|---|
| Filter Alarm Function | Yes |
| In Door Fan Type | Turbo |
| Energy Saver Function | Yes |
| Cooling Capacity (BTU) | 18000 |
| Dehumidification | 4.9 (pts./hr.) |
| Fan Only | 3 |
| Weight | 70.00 lbs |
Model
| Brand | LG |
|---|---|
| UPC | 048231605052 |
| Warranty Info | Brand New This product is Brand New with full manufacturer warranty |
General Information
| Height | 17.68" |
|---|---|
| Depth | 28.11" |
| Width | 25.98" |
Features
| Programmable 24-Hour Timer | Yes |
|---|---|
| Works with Alexa | Yes |
| Works with Google Assistant | Yes |
| Works with SmartThinQ | Yes |
| Remote Diagnostics | Yes |
| Remote Monitoring | Yes |
| Remote Control | Yes |
| Wi-Fi Connection | Yes |
| Auto Restart | Yes |
| SmartThinQ Works with Google Assistant/Amazon Alexa | Yes |
| Washable Filter | Yes |
| 3 Cooling & Fan Speeds | Yes |
| Quiet Operation | Yes |
| Installation Kit | Yes |
| Easy Installation and Usage | Yes |
| Maximum Cooling | Yes |
| Energy Saver Mode | Yes |
Electrical Specifications
| Volts | 230/208 Volts |
|---|---|
| Frequency | 60 Hz. |
| Amps | 15 Amps |
| Phase | 1 |
Details
| Smart Appliance | Yes |
|---|---|
| Vented Outside | Yes |
| Maximum Air Flow | 530 CFM |
| Adjustable Air Direction | Yes |
| Wi-Fi | Yes |
| Includes Thermostat | No |
| Cooling Area | 1000 sq. ft. |
| Decibel Rating | 65 dBA |
| Number of Cooling Speeds | 3 |
| Air Filter Included | Yes |
| Filter Type | Washable |
| Heat | No |
| Wireless Remote Controller | Included |
| Plug Type | 6-15P |
| EER | 11.9 |
| CEER | 11.8 |
| Programmable Timer | Yes |
Certification
| Energy Star | Yes |
|---|
Appearance
| Type | Window |
|---|---|
| Window Type | Standard |
| Window Compatible | Yes |
| Color | White |
| Chassis Type | Slide Out |
LG LW1821ERSM is rated
4.6 out of
5 by
25.
Rated 5 out of
5
by
Jose49 from
LG replacement the best
As did the previous LG window a/c, for over 10 years, it's replacement functionswonderfully.
Date published: 2024-10-27
Rated 5 out of
5
by
Gre65gg from
Easy to install and use, cools instantly
[This review was collected as part of a promotion.] I bought this as my previous AC unit was showing signs of giving up. The removable casing and the many features made this my choice. Once the lightweight casing was installed, the insides were easy to lift and slide in place. No more wrestling with the entire unit trying to set it up. Cools several rooms almost instantly. Love the remote control and the thermostat feature. I used to watch the electric meter when the old AC was working and it spun like a meat slicer. Now, with the LG, it spins much slower. And it's very quiet, no loud fan, no rattles. Highly recommend.
Date published: 2022-06-10
Rated 1 out of
5
by
Anonymous from
Used for years Good A/C's Warranty coverage sucks
Installed a new, out of the box, LW1821ERSM and it stopped running within 24 hours. Electronics in cover defective. Tested with cover from another new unit and ran perfectly. Have now been in a que for warranty service for almost a month. Have used LG window units for over a decade in 25 residential units and have had warranty problems before. I am not very encouraged based on past experience.
Date published: 2022-08-03
Rated 4 out of
5
by
Lyn74 from
Cools Beautifully
We purchased this air conditioner couple of weeks ago. It is Big and beautiful. It cools beautifully but one of the faults I have is the snapping sounds it makes when it kicks in and out constantly. It is in our living room where we both sit and it constantly clicks and clicks. The second fault is I cannot adjust the vents. I originally got them to point up but I cannot move them down, I'm afraid they will break they're that tight. Otherwise, it's great.
Date published: 2023-09-13
Rated 5 out of
5
by
Kkgotcha from
Very Reliable
[This review was collected as part of a promotion.] Due to a house fire, i was unable to use the air conditioner when I purchased it. Almost 1 year later, I finally got to install it in the house I am renting until my home is ready to move back in to. I am so Extremely Happy with the unit! It works like a charm! From one end of the house to the other is nice and cool, which is important since it is 90 degrees outside. The installation and programming are so easy. I misplaced the instruction book but found it online which is fantastic! Now I will install a window in my remodeled home, just to house my air conditioner because it has become a very important part of my life. I could not function without it. It is one of the best decisions I have made and the price is right too!
Date published: 2022-07-18
Rated 5 out of
5
by
Demon56 from
I love the control anywhere features
[This review was collected as part of a promotion.] It’s been nearly a month since I got my 18,000 btu AC and this beast will freeze you I love it
Date published: 2023-09-07
Rated 5 out of
5
by
Decoy1 from
Omg works so well
[This review was collected as part of a promotion.] Im using the LW1821ERSM and I really do love it. Its amazing. Im using it in a medium size area, that has tanning bed and it keeps it so cool and comfortable. It was so easy to install and the k8t is included.Love that it has a remote, very convenient. The 3 speeds lets you get the area to your idea temp. It really is amazing!! Runs quietly and even has a timer. Simply love this!!
Date published: 2021-09-16
Rated 5 out of
5
by
ccbryant71 from
Keeps you cool!
[This review was collected as part of a promotion.] I got this for our garage that we converted in to a man cave for my husband. This unit works beautifully! There are 3 cooling options/speeds. This definitely can cool a room! It also says it restarts quickly after a power outage. We haven’t had that issue yet so I can’t comment. However, if you’re looking for a larger window A/C unit, this is the one to get!!
Date published: 2021-10-21
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- Cooling Capacity (BTU): 18000
- Number of Cooling Speeds: 3
- Energy Star: Yes
- Plug Type: 6-15P
- Remote Control
- WiFi Connect
- Auto Restart
- SmartThinQ Works with Google Assistant/Amazon Alexa
- Smart Window Air Conditioner
- Google Assistant/Amazon Alexa in White