Add to Wishlist


  • 12,000 BTU
  • Estimated Cooling Area 550 Sq. Ft
  • 3 Cooling and 3 Fan speeds with Auto Cool
  • Easy To Use Electronic Controls
  • Automatically restarts after power failure
  • Window Installation Kit Included
12,000 BTU Window Air Conditioner
$ 379.00

Easy Installation

LG window air conditioners are designed for easy and efficient installation and come with a washable and resusable air filter. Before buying an air conditioners, measure your room to find out how many BTUs you need.

Horizontal Table
Room Size (Sq. Ft.) 150 (10'x15')
BTUs/hr up to 5,000
Room Size (Sq. Ft.) 260 (13'x20')
BTUs/hr 6,000
Room Size (Sq. Ft.) 280 (14'x20')
BTUs/hr 7,000
Room Size (Sq. Ft.) 340 (17'x20')
BTUs/hr 8,000
Room Size (Sq. Ft.) 450 (18'x25')
BTUs/hr 10,000
Room Size (Sq. Ft.) 550 (22'x25")
BTUs/hr 12,000
Room Size (Sq. Ft.) 800 (25'x32')
BTUs/hr 15,000
Room Size (Sq. Ft.) 1,000 (25'x40')
BTUs/hr 18,000
Room Size (Sq. Ft.) 1,300 (33'x40')
BTUs/hr 22,000
Room Size (Sq. Ft.) 1,560 (39'x40')
BTUs/hr 24,000
Installation Kit1

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 Reminder1

Filter Check Reminder

The Clean Filter LED lights up to notify you that the filter needs to be cleaned.
Slide-out Washable Filter1

Slide-out Washable Filter

Maintenance is easy: simply remove the filter and wash it.
  • 24-hour On/Off Timer

    Up to 24 hours of operation time can be set, so that your air conditioner turns off when you plan it to.

  • Multiple Fan Speed

    Low, Mid, or High 3-way adjustment.

  • Auto Restart

    If the power cuts off, your unit resume its previous operation shortly after the power is restored.

Warranty / Certifications


    • Type
    • Window Air Conditioner
    • BTU
    • 12,000


    • BTU performance (Cooling)
    • 12,000
    • EER
    • 12.1
    • CEER
    • 12.0
    • Dehumidification (Pts/hr)
    • 3.8
    • Dry Air Flow (CFM)
    • 265
    • dBA Level (High/Mid/Low/Sleep)
    • 55/54/53
    • Est. Cooling Area (SQ.FT)
    • 550
    • Room Size
    • 22' x 25'
    • Fits Windows
    • 23'-36'W x 16"H


    • Shipping Dimension (WxHxD)
    • 27.17 x 18.31 x 23.62 inch
    • Product Dimension (WxHxD)
    • 23.62 x 15.00 x 22.20 inch
    • Net Weight (lb)
    • 82
    • Shipping Weight (lb)
    • 90


    • Fan Speed Cooling
    • 3
    • Fan Speed Only
    • 3
    • Indoor Fan Type
    • Turbo
    • Air Deflection
    • 4-Way
    • Energy Saver Function
    • Yes
    • Thermostat Control
    • Thermistor
    • Remote Control
    • Yes
    • Compressor
    • Rotary
    • Air Discharge Type
    • Top Discharge
    • Chassis Type
    • Slide In-Out
    • Auto Restart
    • Yes
    • Outdoor Vent / Exhaust
    • Yes
    • Timer
    • 24 Hr, On/Off
    • Filter Alarm Function
    • Yes


    • Voltage / 60 Hz
    • 115 V
    • Cooling Power (W)
    • 990
    • Cooling Current (A)
    • 9.3


    • Color
    • White
    • Installation Kit
    • Yes
    • Air Filter
    • Washable


    • Parts & Labor
    • 1 Year Parts and Labor


    • UPC
    • 048231378994

What people are saying

Rated 1 out of 5 by from Great till it broke Worked great for 4 months then the compressor would not shut off unless you unplugged it. So push the power but and everything cuts off but the compressor. Currently I am in contact with the warranty department and they are working with me to resolve this issue. That being said save your receipt just in case. I never expected this from an LG product
Date published: 2021-10-15
Rated 4 out of 5 by from Does a Good Job I bought this a couple months ago and paid for professional installation (which was super great). It was OK, but the vent wouldn't adjust down and was blowing the cool air up to the ceiling. Put in a repair call, and the repair was made but still doesn't adjust like I would like it to.
Date published: 2021-10-07
Rated 5 out of 5 by from Fantastic AC unit Easy to install. Works great and is quieter than the last one I had. Looks very nice and well built.Great addition to the room and cools very well.
Date published: 2021-10-03
  • y_2021, m_12, d_4, h_19
  • bvseo_bulk, prod_bvrr, vn_bulk_3.0.20
  • cp_1, bvpage1
  • co_hasreviews, tv_0, tr_331
  • loc_en_US, sid_MD05601823, prod, sort_[SortEntry(order=SUBMISSION_TIME, direction=DESCENDING)]
  • clientName_lg
  • bvseo_sdk, java_sdk, bvseo-4.0.0
  • CLOUD, getReviews, 36ms


Ask your questions. Share your answers.
Please review the detailed product information and help guides in the
Product Support section for this product prior to posting a question.

My unit is about 3 years old and has stopped cooling. It sounds like the compressor is running. Is there a way to recharge the unit? What is the life expectancy of this unit?

Asked by: Roselani
The refrigerant for the LG 12,000 BTU Window Air Conditioner, Model # LW1216ER is in a closed system and the only way it gets depleted is if you have a leak in the system. If there is a leak in the system, you would definitely know because the refrigerant has a very distinctive, unmistakable odor. The most likely causes for the unit not cooling are a dirty air filter or dirty evaporator coils or condenser coils. When was the last time that you had maintenance done on the unit to have the evaporator coils and condenser coils cleaned? Windows air conditioners can nevertheless be recharged with refrigerant. This unit uses the R32 refrigerant and when recharging refrigerant, the refrigerant should not be mixed since no machine is designed for mixed-medium refrigerant. If a device is low on refrigerant, the pressure will be too low and the machine won't work. If a device is overfilled, the pressure will be too high and the machine won't work either. For this reason, it's crucial to get the pressure right when adding refrigerant as not to overfill the unit...^Ivan
Answered by: Ivanf
Date published: 2021-08-02

Can the LG 12K window unit be installed withour buying a window bracket kit?

Asked by: ellieplum
If you are inquiring about a security bracket that goes around the air conditioner, the need for one will depend on your local building codes and whether you live in an apartment building or a house. The LG 12,000 BTU Window Air Conditioner, Model # LW1216ER comes with a window installation kit that is required to install the air conditioner in an appropriately sized single-hung or a double-hung window. Some areas have codes that require a security bracket to prevent the air conditioner from injuring people if it is installed in a window that overlooks a sidewalk in the event that it falls out of the window. You will need to check with your superintendent if you live in an apartment building or check your local building codes or consult with your local building inspector...^IFV
Answered by: Ivanf
Date published: 2021-05-21

Can I remove the front cover to clean the coils?

Asked by: vickier
The evaporator coils are located behind the front grill on the LG 12,000 BTU Window Air Conditioner, Model # LW1216ER but you would need to disassemble the unit to gain access to the coils. It is recommended that you have yearly service maintenance to get the coils cleaned by an LG Authorized Service Center...^IFV
Answered by: Ivanf
Date published: 2021-04-19

Is there a specific outside cover I can buy?

Asked by: Glen1955
Home Improvement stores like the Home Depot, Lowe's etc., sell a variety of Air Conditioner covers and you can find many more online. Use the W x H x D dimensions of 23.62" x 15.00" x 22.20" for the LG 12,000 BTU Window Air Conditioner, Model # LW1216ER to find a cover that best suits your needs...^IFV
Answered by: Ivanf
Date published: 2020-08-06

Does this unit have a drain plug in the base pan?

Asked by: Tiann
This air conditioner is equipped with a slinger fan. The fan has an outer ring that runs in the water that collects in the base pan if it gets deep. That condensate is then picked up by the fan and expelled through the condenser, making the air conditioner more efficient.
Answered by: ChrisPSM
Date published: 2019-08-05

Hi, I have a window opening of 26"Wx16'H. I understand the opening states 27" so that you can put your hands around it, but would I be able to install the left and right curtains? Basically 2 5/8", or 1 1/4' on either side.

Asked by: davejase
The minimum window opening of 27" that the LG 12000 BTU Window Air Conditioner, Model # LW1216ER is the minimum space required for the left and right guide panels that have the curtains attached can fit into...^IFV
Answered by: Ivanf
Date published: 2020-06-26

Where is the LW1216ER manufactured?

Asked by: Ted S
Hi Ted S. LG is an international company with factories worldwide. Parts for the air conditioner can be shipped from various factories in any country in which we have factories and the ENERGY STAR® LG 12000 BTU Window Air Conditioner, Model # LW1216ER be assembled in a different country or it could be shipped from any country in which we have a factory. The air conditioner will have a nameplate attached on the back that identifies its Country of Manufacture/Country of Assembly and that information will also be on the carton that the air conditioner is shipped in...^IFV
Answered by: Ivanf
Date published: 2020-06-27

Hello. My window is not quite 24.75 inches wide, but the inner space can accommodate the "wings" of a unit for almost another 1.5 inches,  Will that combination accommodate the LW1216ER / 12,000? Also, can I use a NO-DRILL bracket? Thanks.

Asked by: DOKENN
Hi DOKENN. The ENERGY STAR® LG 12000 BTU Window Air Conditioner, Model # LW1216ER has a width of 23 5/8" and is designed to be installed in standard single-hung or double-hung windows with actual opening widths from 27" to 39". The reason for the recommended opening widths is that you have to attach the left and right frame guide that have the curtains on them that you need to close any gaps between the air conditioner and your window frame after installation and for ease of installation. Your current width of 24 3/4" would only leave you with an opening of 9/16" on either side of the air conditioner to work with, probably less if your window is not quite 24 3/4". That is an extremely narrow opening and you will not be able to get your hands around the unit to install it, but you definitely will not be able to attach the left and right frame guides to use the curtains. The unit weighs 81 lbs and that will be another concern when attempting to install the unit if you are not able to get your hands around it to install it...^IFV
Answered by: Ivanf
Date published: 2020-06-27
  • y_2021, m_12, d_3, h_19CST
  • bvseo_bulk, prod_bvqa, vn_bulk_3.0.20
  • cp_1, bvpage1
  • co_hasquestionsanswers, tq_52
  • loc_en_US, sid_MD05601823, prod, sort_[SortEntry(order=LAST_APPROVED_ANSWER_SUBMISSION_TIME, direction=DESCENDING)]
  • clientName_lg
  • bvseo_sdk, java_sdk, bvseo-4.0.0
  • CLOUD, getContent, 8ms

Compare (0)