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3.4 | 27 Reviews

12,000 BTU Smart Wi-Fi Enabled Window Air Conditioner, Cooling & Heating

LG LW1221HRSM

Features

  • Cooling: 12,000 BTU
  • Heating: 11,200 BTU
  • Estimated Cooling Area: 550 Sq. Ft.
  • LG ThinQ® Technology

Quick Specs

  • Type: Air Conditioner
  • Style: Window/wall Air Conditioner
  • Width: 23.63"
  • Height: 14.97"
  • Depth: 22.06"
  • Energy Star Rated: No
  • Cooling Power: 12000 BTUs
  • Heating Power: 11200 BTUs

See More

 
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Cooling & Heating

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

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Made to Perfection

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

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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.

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Quiet Operation

LG window air conditioners operate at sound levels as low as 50dB (when in low mode) eliminating unnecessary noise for smooth operation that you'll barely notice.

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Control Your Cool from Anywhere

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

Cooling & Heating LG window air conditioners provide powerful cooling and heating. Stay comfortable all year long, even in extreme climate, with our advanced technology.

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

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.

Quiet Operation LG window air conditioners operate at sound levels as low as 50dB (when in low mode) eliminating unnecessary noise for smooth operation that you'll barely notice.

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

Features

  • Cooling: 12,000 BTU
  • Heating: 11,200 BTU
  • Estimated Cooling Area: 550 Sq. Ft.
  • LG ThinQ® Technology
  • Multiple Cooling/Heating Speeds
  • Easy to Use Electronic Controls
COMPONENTS
Cord Length 52"
DIMENSIONS/WEIGHT
Fits Windows 27"-39" W x 16" H
Net Weight (lbs.) 89.1 lbs
Pallet Qty 8
Product Depth 22.06"
Product Height 14.97"
Product Width 23.63"
Shipping Depth 23.63"
Shipping Height 18.13"
Shipping Weight (lbs.) 97.9 lbs
Shipping Width 27.06"
Stuffing Quantity (20ft/40ft/40ft High) 108/228/285
TL QTY Floor Loaded 390
TL QTY w/ Pallets 240
ELECTRICAL RATINGS
Plug Type 208/230/20 Amp
Rated Amps (Cooling) 5.1/4.8
Rated Amps (Heating) 14.0/15.3
Voltage / 60 Hz 208/230V
Watts (Cooling) 1, 010/1, 060
Watts (Heating) 2, 900/3, 500
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 12, 000
BTU performance (Cooling) 11,500/12,000
BTU Performance (Heating) 9, 200/11, 200
CEER 11.2/11.2
dBA Level (High/Mid/Low/Sleep) 58/54
Dehumid. (Pts/Hr) 3.3
Dry Air Flow (CFM) 265
EER 11.3
Est. Cooling Area (Sq. Ft.) 550
SUMMARY
Air Type Cooling & Heating
Type Window Air Conditioner
UPC CODES
UPC 048231605083
WARRANTY
Parts & Labor 1 Year
AIR CONDITIONER THINQ® SMART FEATURES
ThinQ® Smart Technology Yes

Quick Specs


  • Appearance

  • Type: Air Conditioner
  • Style: Window/wall Air Conditioner

  • Dimensions

  • Width: 23.63"
  • Height: 14.97"
  • Depth: 22.06"

  • Features

  • Energy Star Rated: No

  • Cooling Capacity

  • Cooling Power: 12000 BTUs

  • Heating Capacity

  • Heating Power: 11200 BTUs

Specifications Sheet

Energy Guide

Owner's Manual English 4,091K 05/27/2022

Owner's Manual Spanish 4,063K 05/27/2022

Get Adobe Reader

* Documents require Adobe Reader.

Professional delivery and installation is available for every product we sell. We would be happy to coordinate delivery and installation for you.

Extended warranties are usually very inexpensive and can save you thousands in the future. Some can even cover extra costs that result, such as cost of food that spoils when your fridge dies. It's simple and inexpensive to purchase extended warranties and one of the smartest ways to protect your investment.

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.

3.4 out of 5

59% of reviewers recommend this product.

5 Stars

LG is a name I trust for all my appliances.

Vercelli30 4/18/2024

I bought this unit a couple of months ago to replace a unit I bought previously that was exactly the same. Because I believe in LG and because this unit fits my needs especially because it is heating and air conditioning which I need in the room where it was installed.The heat Right now I use in the morning starting at about 5am and the AC Later in the day when the Sun is hitting the walls of the room where the unit was installed. Unit is very quiet and the remote control works from a long distance if needed which as a 80+ senior is very helpful. Thanks LG life is good with this unit.
Originally posted on lg.com

Yes, I recommend this product

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Quality

 

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5 Stars

Heat and cooling with remote and installed in wall

Shirley10 4 3/19/2024

I bought this cooling and heating unit in Sept.2023. Its fan broke and the unit was deemed none repairable because it would cost less to just replace it. I have ordered the exact same unit from Home Depot again because its the best unit on the market for the price. Easy to install also.
Originally posted on lg.com

Yes, I recommend this product

 Incentivized Review

5 Stars

Shirley Vercelli 3/19/2024

I bought this unit and really liked it so when it died last month I quickly ordered another one just like it. Worked great and installed it in the wall with good ventilation.
Originally posted on lg.com

Yes, I recommend this product

 Incentivized Review

5 Stars

Had a issue and lg took care of it

Lola20 11/16/2023

I purchased this unit two months ago and it works very well ac and heat on it our electric bill isnt outrageous so thats a plus we did have a issue with it and we called customer service and they were very professional they sent a technician out to fix the issue and the unit works as good as new we are definitely satisfied thanks lg
Originally posted on lg.com

Yes, I recommend this product

 Incentivized Review

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3 Stars

4Plex 11/7/2023

Disappointed that the Plastic fan blade broke within 5 months of use. Replacement by LG was smooth. Still waiting refund.
Originally posted on lg.com

No, I do not recommend this product

Features

 

Quality

 

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1 Stars

Earl68 10/21/2023

Product less than two years old already broken wont shut down when correct temperature reached. Talked to LG tech. Said probably cause is motherboard cant find parts for this model. Help.
Originally posted on lg.com

No, I do not recommend this product

 Incentivized Review

5 Stars

Brad 08 9/14/2023

First one we bought was junk. LG gave us a refund. We bought a different model and it works great.
Originally posted on lg.com

Yes, I recommend this product

4 Stars

works well.

deznorsk 7/30/2023

Works well. The noise level is high due to the small supply area making high velocity air noise. The temperature drop is only average 15 degrees from return to supply.
Originally posted on lg.com

Yes, I recommend this product

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5 Stars

Great buy

Kimberkat 7/12/2023

Does a fantastic job. Almost to fantastic. It keeps our church building very comfortable.
Originally posted on lg.com

Yes, I recommend this product

 Incentivized Review

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3 Stars

One of few with heat features

Andrew1234 7/8/2023

This is my 3rd unit Im hoping this last longer than the other 2. My first one and second one started leaking freon at 2 years old. My second still under warranty had to be fixed twice. So will see how long the 3rd one last.
Originally posted on lg.com

No, I do not recommend this product

Features

 

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1 Stars

failure to perform

roy13 7/6/2023

i bought this AC on 6-1-23 had it installed it was working good for a week and then it quit cooling on 6-11-23 i have not been able to return it yetbut when i do ill get my refund and purchase some other brand of AC not an LG.
Originally posted on lg.com

No, I do not recommend this product

Features

 

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2 Stars

didnt work well

rj walters 6/26/2023

The thermostat doesnt work well and the cooling and heating are uneven.
Originally posted on lg.com

No, I do not recommend this product

 Incentivized Review

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1 Stars

Not happy at all

Bridge7050 6/26/2023

I bought this and it worked great for 3 weeks.my house felt great All of a sudden the motor stopped. Theres power to it but it just stopped. Im in a rural area so it seems challenging to get someone out there to look at it. Its al frustrating cause no one has even called me about it and its been out for about a month. Its HOT and Im in Florida The kids and sure would like our AC fixed.
Originally posted on lg.com

No, I do not recommend this product

Features

 

Quality

 

Value

 
4 Stars

Works great

LuluTex 6/11/2023

I bought my LG cooling/heating appliance about a month ago. Its so faithful during the summer months and good to me during the few and far between cold days during the winter here in deep south Texas Downside is trying to clean inside when the dirty and mold start. Its a huge job and can also need up your air conditioner which is so expensive to begin with. Then you have to buy another.
Originally posted on lg.com

Yes, I recommend this product

Features

 

Quality

 

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5 Stars

This unit is very easy to work.

LW1221HRSM Window unit wa 6/10/2023

Waiting for some hit weather but unit has done well so far. Enjoying it.
Originally posted on lg.com

Yes, I recommend this product

Features

 

Quality

 

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1 Stars

Fan blade was broken at production plant

JohnWilk 5/26/2023

My elderly neighbors LW1221HRSM stopped working at 13 months. Of corse its out of warranty. The condensing fan blade broke off 2 blades and locked up the fan when one of the blades got jammed. Heres the odd thing. Only one broken blade was found in unit. That could only mean it was shipped with one blade broken off and removed during manufacturing.
Originally posted on lg.com

No, I do not recommend this product

Features

 

Quality

 

Value

 
2 Stars

Reason why it was s 3rd party sale item

Susan H002 5/4/2023

I hate this unit. It short cycles every minute on or off the energy saver. It defaults to the setting without your choice. Senseless to include a button that doesnt override the feature. This is an expensive unit. It requires a special electrical plug and voltage installed by an electrician. It is so loud it rivals jets. I would run over it if I could.
Originally posted on lg.com

No, I do not recommend this product

 Incentivized Review

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5 Stars

The best unit Ive owned

Roknroot 3/24/2023

Easy installation great Wifi control auto restart during power outages and Super Quiet
Originally posted on lg.com

Yes, I recommend this product

 Incentivized Review

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1 Stars

WiFi stopped working after a year

TRH2000 1/25/2023

I bought the LW1221HRSM the LW8021HRSM in July of 2021. They were purchased because they had WiFi and I could turn them on remotely when the temperatures were below freezing. They would sometimes lose their connection but I was always able to reconnect them. In November 2022 they lost WiFi before a severe cold front making them basically useless. They will not connect because the network connection is unstable. LG has admitted that they are having issues with the LGEwhisen network but they dont have any solutions. I am furious that I wasted money buying these and they only served their purpose for just over a year. I have several other LG products and have always been satisfied but these are making me rethink any LG product
Originally posted on lg.com

No, I do not recommend this product

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5 Stars

Easy to install

Jsdasch4205 12/17/2022

Have this since November and work great Heat work excellent
Originally posted on lg.com

Yes, I recommend this product

Features

 

Quality

 

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4 Stars

Powerful window unit with strong heat and cool

SChatraw 12/5/2022

We purchased this unit to replace ours that was legitimately from 1970 something. We can only hope this one lasts as long So far we love the compact size and relative quiet noise level of this unit. The cooling and heating is perfectly sufficient for our large master bedroom. My only complaint is that I wish it was smarter. My goal in finding a new unit was to have something that could monitor the air temp and kick on when needed. I thought this unit would do that but what it does is kick on every 3 minutes to take the temp of the room and then reacts as needed. A little annoying if you want to keep the room at a certain temp at night as you have to deal with the noise of it coming on every few minutes. If that was improved somehow to have a thermostat that could constantly monitor then wed be at 5 stars. Overall still happy with our upgrade.
Originally posted on lg.com

Yes, I recommend this product

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Quality

 

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4 Stars

Great Buy then the Artic Wind 18000btu combo

Ken hookup 11/24/2022

Give great ac and great heat even at high speed. Happy for now
Originally posted on lg.com

Yes, I recommend this product

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Quality

 

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5 Stars

Everything fits to the tee hands down

Jimmy41 11/21/2022

Best purchase Ive made highly recommend getting one again if this fails heat works great an heats well very well built unit thanks
Originally posted on lg.com

Yes, I recommend this product

 Incentivized Review

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5 Stars

Perfect Size and easy installation.

Scooterz 11/20/2022

Product was perfect for a shop that needed ac and heat. Highly recommended
Originally posted on lg.com

Yes, I recommend this product

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1 Stars

Worked great for 6 months and quit

Sdave1006 11/4/2022

I bought this unit due to the other one I had worked so well. However this unit worked for 6 months and quit. Self test shows nothing wrong but it doesnt cool.
Originally posted on lg.com

No, I do not recommend this product

 Incentivized Review

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1 Stars

Room gets HOT even when its on cool and 60F

Alejandra Azuara 10/13/2022

I bought this AC about a week ago brand new from Home Depot and Im already having problems with it. It makes noise and I thought I installed it wrong but taking a closer look its some type of radiator or something thats shakes. It get annoying and I cant sleep. Next it doesnt cool. AT ALL I put it on the lowest temperature and leave my bedroom for 30 minutes and when I come back I get hit with a heat wave PLEASE DONT BUY THIS BRAND This ac was expensive and to have it not work properly just gets me and my husband angry
Originally posted on lg.com

No, I do not recommend this product

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Quality

 

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5 Stars

Perfect fit

Dea89 10/12/2022

Perfect fit for my new addition. Changed the garage into a big family room and got this LG to cool and heat it Its perfect.
Originally posted on lg.com

Yes, I recommend this product

 Incentivized Review

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Value