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2.3 | 15 Reviews

12,000 BTU Window Air Conditioner Cools Up To 550 sq. ft.

LG LW1216ER

Features

  • Stay cool and comfortable all summer - With 12,000 BTUs of cooling power, this unit is perfect for rooms up to 550 sq. ft., delivering fast, consistent relief from the heat.
  • Take control from anywhere - The included remote puts temperature, fan speed, and mode selection right at your fingertips for total comfort without leaving the couch.
  • Cut costs without sacrificing comfort - The Energy Saver mode helps reduce power consumption while maintaining your ideal room temperature.
  • Say goodbye to uneven cooling - 4-way air direction ensures even airflow throughout the room, so no corner gets left behind.

Quick Specs

  • Type: Air Conditioner
  • Style: Window/wall Air Conditioner
  • Width: 23.62"
  • Height: 15"
  • Depth: 22.18"
  • Energy Star Rated: Yes
  • Cooling Power: 12000 BTUs

See More

 
Image Feature

Maximum Cooling

LG window air conditioners provide exceptional cooling power that will keep you and your family cool, comfortable, and in control .

Image Feature

Made to Perfection

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

Image Feature

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.

Image Feature

Lo-Decibel Optimal Low Noise Performance

LG window air conditioners operate at sound levels as low as 53dB (when in low mode) eliminating unnecessary noise for smooth operation that you'll barely notice.

Maximum Cooling LG window air conditioners provide exceptional cooling power that will keep you and your family cool, comfortable, and in control .

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.

Lo-Decibel Optimal Low Noise Performance LG window air conditioners operate at sound levels as low as 53dB (when in low mode) eliminating unnecessary noise for smooth operation that you'll barely notice.

Features

  • Stay cool and comfortable all summer - With 12,000 BTUs of cooling power, this unit is perfect for rooms up to 550 sq. ft., delivering fast, consistent relief from the heat.
  • Take control from anywhere - The included remote puts temperature, fan speed, and mode selection right at your fingertips for total comfort without leaving the couch.
  • Cut costs without sacrificing comfort - The Energy Saver mode helps reduce power consumption while maintaining your ideal room temperature.
  • Say goodbye to uneven cooling - 4-way air direction ensures even airflow throughout the room, so no corner gets left behind.
  • Keeps going when the power cuts out - Auto Restart resumes your previous settings automatically after a power outage, so your comfort stays on track.
  • Quick to install, easy to enjoy - Comes with everything you need for setup and starts cooling right away, with simple, intuitive controls and a sleep, hassle-free design.
Compressor
Compressor Rotary
Dimensions/Weight
Fits Windows 23"-36" W x 16" H
Net Weight (lbs.) 82 lbs
Product Dimension (WxHxD) 23.62" x 150" x 22.20"
Shipping Dimension (WxHxD) 27.17" x 18.31" x 23.62"
Shipping Weight (lbs.) 90 lbs
Electrical Ratings
Rated Amps (Cooling) 9.3
Voltage / 60 Hz 115V
Watts (Cooling) 990
Features
Air Deflection 4-Way
Air Discharge Type Top Discharge
Air Filter Washable
Auto Restart Yes
Chassis Type Slide In-Out
Energy Saver Function Yes
Fan Speed Cooling 3
Fan Speed Only 3
Filter Alarm Function Yes
Indoor Fan Type Turbo
Outdoor Vent / Exhaust Yes
Remote Control Yes
Thermostat Control Thermistor
Timer 24 Hr, On/Off
Window Installation Kit Yes
Materials/Finishes
Color White
Performance
Room Size Large Rooms - 501 - 750 sq. ft.
BTU Performance 12, 000
BTU performance (Cooling) 12,000
CEER 12.0
dBA Level (High/Mid/Low/Sleep) 55/54/53
Dehumid. (Pts/Hr) 3.8
Dry Air Flow (CFM) 265
EER 12.1
Est. Cooling Area (Sq. Ft.) 550
Summary
Type Window Air Conditioner
UPC Codes
UPC 048231378994
Warranty
Parts & Labor 1 Year Parts and Labor

Quick Specs


  • Appearance

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

  • Dimensions

  • Width: 23.62"
  • Height: 15"
  • Depth: 22.18"

  • Features

  • Energy Star Rated: Yes

  • Cooling Capacity

  • Cooling Power: 12000 BTUs

Interactive Tour

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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.

2.3 out of 5

26% of reviewers recommend this product.

1 Stars

Extremely noisy

dd1008 6/9/2025

This unit is so noisy its like living with a truck in our bedroom. It is perfectly fine at cooling the room we just cant sleep with it on. Its a nightmare. Weve used it a few summers and will take it out and replace it. Do not recommend.
Originally posted on lg.com

No, I do not recommend this product

1 Stars

Do NOT get

John7779 8/31/2024

Sliding the 90 pound core from the shell is the worst engineering design ever AND worst they expect that everything will hold when you slide the massive core back in Definitely ONLY for ground floor.
Originally posted on lg.com

No, I do not recommend this product

1 Stars

Not working since day one. No LG resolution yet.

Bob Donaldson 8/4/2024

This product has not worked sin the day it was installed. I have talked with 7 different people at LG on 4 phone calls. First I was told it was unrepairable and I lived too far away to exchange it they sell them 15 miles north of me. Then they would refund the price that was paid. Then they made a mistake and this is a 12000 BTU AC so they need to service it. I was on hold for 20 minutes and was told because they were calling for the day they did not have time to speak with me. The supervisor was gong to call back the next day. No call back. 3 weeks no A/C and the temps in the house are in the high 80s. Come on LG replace it. It didnt work from day one.
Originally posted on lg.com

No, I do not recommend this product

1 Stars

Dosent work to my expectations

302HAZXF7125 7/28/2024

No good and paid full price did not work to my expectationsand Im disabled and I need it cool
Originally posted on lg.com

No, I do not recommend this product

1 Stars

d to faild

302hazxf7125 7/28/2024

I bought it almost a year ago and thought it would blow my old one out with being cold and it didnt it sat in a box finally got it put in after the did not workas expected
Originally posted on lg.com

No, I do not recommend this product

1 Stars

Michael olski 7/27/2024

It doesnt live up to my expectationsvery disappointedthe old one that I replaced this with was blowing colder
Originally posted on lg.com

No, I do not recommend this product

2 Stars

LG Window AC

MTGr 7/22/2024

Used in my husbands show. Already dead after just 3 years.
Originally posted on lg.com

No, I do not recommend this product

1 Stars

Last LG product in this house

SadlyUnimpressed 7/11/2024

Once again got a new window AC. Left it off for 24 hours and immediately was making noises similar to those they make when theyre breaking down. Theyre shelving these ac for years. Bought my last one in 2023 and its a 2016 model. Plus the manufactures warranty is such a joke. Begging over the phone two appointments and couldnt fix the last one so dealing with this with the new one has absolutely frustrated me. Done w LG. LG tech even said LG is crap if that says anything.
Originally posted on lg.com

No, I do not recommend this product

2 Stars

I expected a much more thoughtful product from LG

Edward272727 7/4/2024

Plus side - It cools occasionally. LW1216ER Negatives - Its just a horribly executed product. Rated at 550 sq fr but doesnt cool a 450 sq ft room effectively when the temp goes above about 85. Very heavy at 82lbs requires two people and no way to carry easily or protect coils while moving. Side curtain panels are incredible cheap and break easily. Remote doesnt have a backlight so cant use from bed at night. All lights on front panel turn off so you cant adjust easily at night and the lights are not very bright so you cant see during the day. Foam padding tears away. Foam padding degrades in a year or two. No appreciable difference in fan settings 1 2 3. All are pretty much are low and settings 2 and 3 should be stronger. Energy Saver mode turns the unit off and back on every 1-3 minutes sometimes more frequently. The constant on off on off on off on off on off on off on off on off on off is worse than just leaving it in cool mode. The Dry mode doesnt do anything. Uses more electricity than it claims. Louder than it claims. Air deflectors have limited adjustments and cant get air where its needed. Attaching the front grill is always a huge hassle as the poor design results in the power cord control panel cable vent lever and attachment tabs all getting in the way at different times. Front grille attachment tabs are cheap plastic and snap off easily. Theres always nasty smelly rusty water in the base pan. The base pan rusts has chipping paint and collects dirt - removing end of season is a nightmare. The dirt rust paint that collects in the base pan and sits there creates a mold issue every season. Manual recommends cleaning condenser coils in back but doesnt say how to do that.
Originally posted on lg.com

No, I do not recommend this product

3 Stars

Noisy on an intermittent basis.

Dave Massen 6/27/2024

I purchased this unit in 2018 because of a high rating in a magazine verified with Consumer Reports. Being in a studio apt the fact that it was called quiet was a major plus. Ive been disappointed in that regard. When the compressor first comes on theres some racket which I understand is normal. Thereafter sometimes the compressor coming on is silent and I only hear a change in tone of the hum. This is ideal. But on bad days there is racket every time the compressor comes back on which is intolerable. I live in San Francisco and only use it a few times a year so far but global warming is coming. While it was under warranty a service man came but it was not noisy that day. The last time I used it this year it was pretty quiet. But even though its now out of warranty if it continues being noisy I will contact LG again. There seems to be no rhyme nor reason why it is noisy on some days and not on others. Its been a pain. Perhaps LG will see this review.
Originally posted on lg.com

No, I do not recommend this product

5 Stars

Excellent air conditioner

Barry 73 6/13/2024

Its a full 12000 BTU and pushes very cold air. I took the temp when on full blast and its in the 30sF Three speed fan cools a very large area quickly. All of that and its remarkably quiet. We can watch TV right next to it could not do that with the unit it replaced.
Originally posted on lg.com

Yes, I recommend this product

5 Stars

Quiet Cold

Bearlover 5/25/2024

So far so good Runs pretty quiet and cools great.
Originally posted on lg.com

Yes, I recommend this product

2 Stars

Defective Unit Blower unit doesnt work well

pw6120 5/23/2024

I like the look.The blower doesnt do a good job at allIts on the highest F-setting you can barely feel the air coming out of the unit. I literally have a box fan in front of the blowing vents so the air gets pushed further out. Maybe my A/C is a faulty unit but to go through the trouble of taking everything apart re-packaging then shipping it back just isnt worth the time. This unit obviously is defective.How it can have a 5star rating my A/C doesnt perform is a mystery.
Originally posted on lg.com

No, I do not recommend this product

4 Stars

Simple

Defever 5/6/2024

very quiet and easy to install. Arrived in good condition.
Originally posted on lg.com

Yes, I recommend this product

5 Stars

Nice cooling nice design

Steve AC 4/23/2024

The unit cools the room off very well. Nice design in that the outer cabinet installs first then the main unit installs into the cabinet.
Originally posted on lg.com

Yes, I recommend this product