LG - 18,000 BTU Smart Wi-Fi Enabled Window Air Conditioner, Cooling & Heating

4.2 | 35 Reviews

18,000 BTU Smart Wi-Fi Enabled Window Air Conditioner, Cooling & Heating

Name: 18,000 BTU Smart Wi-Fi Enabled Window Air Conditioner, Cooling & Heating
Brand: LG
Price: 680.0 USD
Availability: InStock
Rating: 4.2 (35 reviews)

LG LW1821HRSM

Features

Cooling:18,000 BTU
Heating: 12,000 BTU
Estimated Cooling Area: 1,000 Sq. Ft.
LG ThinQ® Technology

Quick Specs

Type: Air Conditioner
Style: Window/wall Air Conditioner
Width: 25.5"
Height: 16.84"
Depth: 30.5"
Energy Star Rated: No
Cooling Power: 18000 BTUs
Heating Power: 12000 BTUs

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3 Year(s) of Protection $99.95

5 Year(s) of Protection $199.95

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Cooling & Heating

LG window air conditioners provide powerful cooling and heating. Stay comfortable all year long, with our advanced technology.

Control Your Cool from Anywhere

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

Quiet Operation

LG window air conditioners operate at sound levels as low as 57dB (when in low mode) eliminating unnecessary noise for smooth operation that you'll barely notice.

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.

Made to Perfection

LG window air conditioners add powerful performance and stable durability to perfectly match your window frame.

Installation Kit

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

Filter Check Reminder

The Clean Filter LED lights up to notify you that the filter needs to be cleaned.

Slide-out Washable Filter

Maintenance is easy: simply remove the filter and wash it.

Features

Cooling:18,000 BTU
Heating: 12,000 BTU
Estimated Cooling Area: 1,000 Sq. Ft.
LG ThinQ® Technology
Multiple Cooling/Heating Speeds
Easy to Use Electronic Controls

COMPONENTS
Cord Length	52"
DIMENSIONS/WEIGHT
Fits Windows	29"-41" W x 18" H
Net Weight (lbs.)	126.5 lbs
Pallet Qty	8
Product Depth	30.5"
Product Height	16.84"
Product Width	25.5"
Shipping Depth	33"
Shipping Height	21.19"
Shipping Weight (lbs.)	139.7 lbs
Shipping Width	29.38"
Stuffing Quantity (20ft/40ft/40ft High)	84/168/168
TL QTY Floor Loaded	504
TL QTY w/ Pallets	240
ELECTRICAL RATINGS
Plug Type	208/230/20 Amp
Rated Amps (Cooling)	7.8/7.3
Rated Amps (Heating)	15.0/16.0
Voltage / 60 Hz	208/230V
Watts (Cooling)	1, 560/1, 600
Watts (Heating)	3, 100/3, 670
FEATURES
Air Deflection	4-Way
Air Discharge Type	Side Discharge
Auto Restart	Yes
Chassis Type	Slide In-Out
Energy Saver Function	Yes
Fan Speed Heating	2
Fan Speed Only	2
Filter Alarm Function	Yes
Indoor Fan Type	Blower
Outdoor Vent / Exhaust	Yes
Remote Control	Yes
Thermostat Control	Thermistor
Timer	24 Hr, On/Off
Wi-Fi Connection	Yes
PERFORMANCE
BTU Performance	18, 000
BTU performance (Cooling)	17,500/18,000
BTU Performance (Heating)	9, 800/12, 000
CEER	11.1/11.1
dBA Level (High/Mid/Low/Sleep)	61/57
Dehumid. (Pts/Hr)	5.5
Dry Air Flow (CFM)	430
EER	11.2
Est. Cooling Area (Sq. Ft.)	1000
SUMMARY
Air Type	Cooling & Heating
Type	Window Air Conditioner
UPC CODES
UPC	048231605090
WARRANTY
Parts & Labor	1 Year

Quick Specs

Appearance
Type: Air Conditioner
Style: Window/wall Air Conditioner
Dimensions
Width: 25.5"
Height: 16.84"
Depth: 30.5"
Features
Energy Star Rated: No
Cooling Capacity
Cooling Power: 18000 BTUs
Heating Capacity
Heating Power: 12000 BTUs

Specifications Sheet

Energy Guide

Owner's Manual English 3,987K 05/27/2022

Owner's Manual Spanish 3,959K 05/27/2022

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* Documents require Adobe Reader.

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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.

4.2 out of 5

80% of reviewers recommend this product.

Awesome

Fishing LG 9/17/2023

This is an awesome unit. Quiet It cools very well I will buy another one if I have to. Thank you.
Originally posted on lg.com

Yes, I recommend this product

Incentivized Review

Super cold

Charlam 8/30/2023

Installation was a breeze. The output is fabulous. We only run it on fan speed low. It cools our florida room and camper with no problems. Perfect for Floridas hot summers.
Originally posted on lg.com

Yes, I recommend this product

Incentivized Review

Features

Quality

Value

Work horse

Mac55 8/23/2023

Ive had this two weeks now. Temperatures here in east Texas have been 105 to 109 each day. This unit under these adverse conditions has performed flawlessly. Im impressed so far. Hope this unit last a long time.
Originally posted on lg.com

Yes, I recommend this product

Incentivized Review

Features

Quality

Value

good features

jimac 8/10/2023

Purchased recently to replace old unit. I am reasonable pleased with the unit features but the unit is a little louder than expected.
Originally posted on lg.com

Yes, I recommend this product

Incentivized Review

Features

Quality

Value

Cold AC 8/7/2023

The air conditioner works very well. Cools and heats exactly as featured.
Originally posted on lg.com

Yes, I recommend this product

Features

Quality

Value

I didnt like the service with my extended guarant

Maria Perez 7/13/2023

I bought this item almost four years ago and suddenly stopped to work.
Originally posted on lg.com

No, I do not recommend this product

Features

Quality

Value

Strong powerfulquite

Rafter B Ranch 7/6/2023

Great cooling in a portable building not so good insulation in the West Texas sun Amazingly quite After much research I selected this LG unit and Im sure glad I did. Loaded with features easy to install I am so far 100 satisfied.
Originally posted on lg.com

Yes, I recommend this product

Features

Quality

Value

Great buy

Bulldog59 7/6/2023

I love it. The E-saver function is great. Once I figured out that I could connect to the A/C by WiFi and got it setup I love it even better. I have it in a sunroom that I dont need it on all the time it is great to be able to program it to come on and shut off.
Originally posted on lg.com

Yes, I recommend this product

Incentivized Review

Features

Quality

Value

Window AC

Kristy oroville 6/11/2023

I bought this just in time of warm weather. This is my second unit which lasted 16 years.
Originally posted on lg.com

Yes, I recommend this product

Features

Quality

Value

AC Unit

Ella27 3/26/2023

I bought my new AIR CONDITIONER February 2023. It Works So Efficiently and its So Quiet. Also has a Energy Saver..on it I am very pleased with my Purchase.
Originally posted on lg.com

Yes, I recommend this product

Features

Quality

Value

LG Air Heat Unit

Peanut200 3/12/2023

Purchased the unit as our old one quit working and hot season approaching.
Originally posted on lg.com

Yes, I recommend this product

Features

Quality

Value

FIXED HEAT/AIR

DALE FOGLE 1/22/2023

HI - HAD MY HEAT/AIR FEW MO. CALLS LG THEY FIXED IT IN 2WEEK SO VERY HAPPY AND THEY WERE NICE ABOUT IT THANKS LG-SO YOU REALLY ENJOY 1 IF YOU NEED IT.
Originally posted on lg.com

Yes, I recommend this product

Features

Quality

Value

Mary McDaniel 12/3/2022

Got my AC/heater in July and the heater doesnt not work been waiting since 11-19 for a service person to come fix it still to today no answer called and got no were at this point not a happy customer to day is 12/3
Originally posted on lg.com

No, I do not recommend this product

Incentivized Review

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Quality

Value

Not so great

Bill from Texas 11/8/2022

The AC unit was a nice size with great features like the Wi-Fi control from a phone app. It cooled and heated well for 11 months then the AC froze up and leaked all over the floor. I contacted LG and they had no one to service the unit in the central Texas area so they refunded the purchase price after a month and hours on the phone with customers service.
Originally posted on lg.com

No, I do not recommend this product

Features

Quality

Value

LG 18000 BTU Air Conditioner

Noucee06 11/6/2022

I purchased this AC unit because summers are hard on HVAC in Houston Texas and it has done more than the job intended. We have to turn it off because it chills the back of my home so well....love it
Originally posted on lg.com

Yes, I recommend this product

Features

Quality

Value

This machine has it all.

woody lucas 11/6/2022

It does everything you are looking for. Heat..air ..wi-fi ..google talk .It helps the regular house system wit the utility bill .The price is just amazing when you consider it is all wrapped up in one machine.
Originally posted on lg.com

Yes, I recommend this product

Features

Quality

Value

Has been the coolest cool for the summer

Gfloyd 10/15/2022

Bought for a mobile home and it is doing its job. Simple to operate.
Originally posted on lg.com

Yes, I recommend this product

Incentivized Review

Features

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Value

LG Air conditioner

Tbird1949 10/10/2022

It has been a good air conditioner. It replaced not just another air conditioner but also a space heater. When I first got it I wasnt sure I had made the right choice. I did. Very happy with the LG Air conditioner and heater.
Originally posted on lg.com

Yes, I recommend this product

Features

Quality

Value

LG AIR/HEAT

LG LW1821HRSM 10/3/2022

THIS PRODUCT DID NOT WORK AND I WAS CALLING FOR 6 MONTHS AND COULD NOT GET HELP TO HELP IT
Originally posted on lg.com

No, I do not recommend this product

Features

Quality

Value

Excellent cooling

eskye 9/11/2022

We bought this and installed it ourselves. It keeps our 752 sq ft home super cold and has helped immensely with humidity issues as well. Have had some trouble hooking it up to ThinQ but otherwise it has been a super solid investment so far.
Originally posted on lg.com

Yes, I recommend this product

Features

Quality

Value

Love the way it is designed

Susan Dixon 8/20/2022

I Love my new LG window unit its more than I expected.
Originally posted on lg.com

Yes, I recommend this product

Features

Quality

Value

The Real deal

Chilly butt 8/18/2022

Very happy easy install works awesome get the extended warranty its worth it
Originally posted on lg.com

Yes, I recommend this product

Features

Quality

Value

Excellent Unit

larryd1253 8/17/2022

Bought this for my daughter and is she ever happy This unit is cooling the entire kitchen and living area in her home Its easy to operate and she just loves it
Originally posted on lg.com

Yes, I recommend this product

Features

Quality

Value

Great features Especially the ThinQ feature

CKP1 8/15/2022

Got this AC about a month ago. Our central air went out and couldnt afford to replace it at this time. Man it is really hot in TX right now so we got this LG 18000 BTU model. It is definitely a downgrade from central but it keeps the living room and kitchen cool. We use smaller models for the bedrooms. I love the ThinQ app. We travel frequently. I love that we can set schedules to turn iit on and off. We turn it off when we leave schedule it to come on on the AM that we are returning. Nice and cool to come home to. You can also adjust temperature mode and fan speed. Love it
Originally posted on lg.com

Yes, I recommend this product

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Quality

Value

apriljohnson173 8/8/2022

I recently bought this ac unit which was the second one in a year and 2 weeks. I just hope this one last longer than the first one did cause I cant afford to buy one every year for I am a single mother on a single income
Originally posted on lg.com

Yes, I recommend this product

Features

Quality

Value

Best window unit yet

RobR1951 7/25/2022

I bought this unit almost 3 weeks ago after my old unit compressor started going out during 100+ degree weather. It couldnt keep out living room cool at 68. This new bigger unit keeps our living room dining room kitchen very comfortable at 75 - 77 with the same 100+ temps outside. I can only imagine how much warmer we will be this winter.
Originally posted on lg.com

Yes, I recommend this product

Incentivized Review

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Great Air Conditioner

Big Elvis 7/18/2022

I bought this on July 3rd and have been enjoying it ever sense have not tried the heater but if it does the job all will be good
Originally posted on lg.com

Yes, I recommend this product

Incentivized Review

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Value

Awesome product

Willp 7/11/2022

Bought this as an emergency buy for my mother in law with it being 104 outside and its helping keep her house at around 70.
Originally posted on lg.com

Yes, I recommend this product

Incentivized Review

Features

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Value

no person has responded to me

beaver brooks 6/13/2022

i purchased a 2nd 18k- the first one died after 24 months no # 2 has a thermostat problems and I ask for help on line and have only received advertisements.
Originally posted on lg.com

No, I do not recommend this product

Incentivized Review

Features

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LG LW1816HR and LW1821HRSM

TeeMob 5/24/2022

We have purchased both units and neither will get cold. They are both 18000btu units. The heater works in both but the AC only gets fan-cool on 60-68 degrees. I am very disappointed because I thought the 1816HR was just leaking freon. I bought it last year in August. We just bought the 1821HRSM yesterday from Home Depot installed it and waited 4hrs for it to get cold before returning home only to find the house is still the same temperature. The only thing that saved us last night was the fact that we had an overcast all day yesterday. I am so intensely upset and disappointed because I have to pay for pickup and delivery three times now and have wasted money paying an installer.
Originally posted on lg.com

No, I do not recommend this product

Features

Quality

Value

Great product

Tootieman 5/15/2022

Love this product. Its quiet it works really well it cools my kitchen and living room nicely. The auto on and off feature is wonderful. It has an auto swivel also..very nice unit
Originally posted on lg.com

Yes, I recommend this product

Incentivized Review

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Value

Does NOT get cold

TPCatkit 5/3/2022

Im very disappointed with this product. Even at 69 degrees its only moderately cool. The Wi-Fi feature does not work. I gave it two stars because of the remote and quiet sound.
Originally posted on lg.com

No, I do not recommend this product

Features

Quality

Value

Great product

Christywow 4/23/2022

I bought this product a month ago and I love it. Great product
Originally posted on lg.com

Yes, I recommend this product

Incentivized Review

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Value

Great LG Air Condition

MASP88 4/22/2022

Had to get a new Air Condition and I bought a LG air condition 18000BTU I Sure do like this air condition It runs so much quieter than my old air conditioner which I really like My LG has so many more nice features and looks good in my living room wall So glad I bought a LG air conditioner
Originally posted on lg.com

Yes, I recommend this product

Incentivized Review

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So far So good

JacquieG 4/19/2022

I bought this ac/heater unit about a month ago and have been satisfied with it so far. I am hoping this is the one the though. Have purchased other ones with same BTU and they only lasted 2 years. Those ones were different brands. So fingers crossed this is the one we have been needing and lasts alot longer than 2 years.
Originally posted on lg.com

Yes, I recommend this product

Incentivized Review

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Quality

Value