• 11,500/12,000 BTU Cooling / 9,200/11,200 BTU Heating
  • EER 11.3 / 11.3 | CEER 11.2 / 11.2
  • Seasonal Heating & Cooling
  • Multiple Cooling/Heating Speeds
Window Air Conditioner


    • EER
    • 11.3/11.3
    • CEER
    • 11.2/11.2
    • Dehumid. (Pts/Hr)
    • 3.3
    • Dry Air Flow (CFM)
    • 265
    • dBA Level (Indoor / Outdoor)
    • 51 / 57
    • Est. Cooling Area (Sq. Ft.)
    • 550
    • BTU Performance Cooling
    • 11,500 / 12,000
    • BTU Performance Heating
    • 9,200 / 11,200


    • Product (WxHxD)
    • 23 5/8" x 14 31/32" x 22 1/16"
    • Shipping (WxHxD)
    • 27 1/16" x 18 1/8" x 23 5/8"
    • Net Weight (lbs.)
    • 87
    • Shipping Weight (lbs.)
    • 99


    • Thermostat Control
    • Thermistor
    • Air Deflection
    • 4-Way
    • Auto Restart
    • Yes
    • Energy Saver Function
    • Yes
    • Filter Alarm Function
    • Yes
    • Fan Only Speed
    • 2
    • Fan Speed: Cooling (Heating)
    • 2(2)
    • Compressor
    • Rotary
    • Indoor Fan Type
    • Blower
    • Type Air Discharge
    • Side
    • Outdoor Vent / Exhaust
    • Yes
    • Chassis Type
    • Slide In-Out


    • Available Colors
    • White


    • Voltage / 60 Hz
    • 208/230
    • Watts (Cooling)
    • 1,010/1,060
    • Watts (Heating)
    • 2,900/3,500
    • Rated Amps (Cooling)
    • 5.1/4.8
    • Rated Amps (Heating)
    • 14.0/15.3


    • Limited Warranty
    • 1 Year Parts and Labor
    • UPC
    • 048231376525

What people are saying

Rated 1 out of 5 by from Don’t buy there products engineered to break down I’ve purchased and it already stopped running Under warranty nobody will service unit
Date published: 2022-01-28
Rated 2 out of 5 by from Heater failed I bought two of these five years ago. I use them when working in my shop, so it isn't like they get constant use. The first one lost part of the temperature display digit in a couple of months. The second quit heating last winter. Difficult to disassemble, the heating element is fine, one of the failsafes failed. Won't be buying another, quality isn't good and service life is too short.
Date published: 2020-07-07
Rated 1 out of 5 by from Dissapointed I bought this window A/C unit for my apartment in July of 2018. Before 1 year of use, it started to make this loud buzzing sound that will not let you sleep at night. Unfortunately the noise was so unbearable that i had to buy another a/c unit that I didnt have the money to spend on. Poor quality of internal parts.
Date published: 2019-07-27
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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 lg window unit keeps tripping the circuit interurpter on tbe plug

Asked by: Gspostal
Hello, hate to hear, sounds like we need to troubleshooting. Please give us a call at 1-800-243-0000 when you are with the unit. ^AC
Answered by: Amber C
Date published: 2018-03-20

The clean filter light is on. Already cleaned but the light is still on. What do I need to do to reset it and so it turns off. I just got this unit a couple of weeks ago. 

Asked by: Lady butterfly
After cleaning the filter, press “Temp ” together to turn off ‘Clean Filter’ light. (Filter reset must be done from unit control panel not remote control). If this doesn't resolve the issue, our support team may be reached via Twitter @LGUSSupport or
Answered by: Shena
Date published: 2017-11-26

I need a replacement fan for this model. Where can I get one?

Asked by: Wjryan
Parts and accessories can be obtained through our parts distributor, MCM Electronics. Their contact number, for placing orders and pricing information, is 800-824-9491. You can also use their website, at For components such as interior parts, it is highly recommended to enlist the assistance of a qualified service technician for purchase and installation. To make service arrangements, you may either contact our Customer Interactive Center at 800-243-0000, or you can check our Repair Provider Lookup on our website, at
Answered by: NeilE
Date published: 2017-06-15

Do I need to run the a.c. unit to the fuse box out side

Asked by: Chuckdogg221
The LG Window Air Conditioner, Model # LW1215HR has to be plugged into its own dedicated standard 250V, 3-wire grounding outlet protected by a 20 Amp. time delay fuse or a 20 amp circuit breaker...^IFV
Answered by: LGJoel
Date published: 2017-05-22

Very Frustrated with this unit. IS IT NORMAL FOR THE HEAT FUNCTION TO KEEP TURNING OFF? IT'S NOT ON ENERGY SAVER. I HAVE IT SET TO HEAT.  Comes on every 3 minutes after reaching temperature. Kept us up all night. Finally just cut it off. Very annoyin

Asked by: 1st SGT
We regret the trouble you have experienced with this air conditioner. The heater function of this machine will cycle on and off in order to maintain its temperature. There is no method available to change this operation.
Answered by: NeilE
Date published: 2017-12-31

What does it mean when the E/Saver light glows yellow instead of green? If it means service is needed, what kind of service?

Asked by: PECTX
We appreciate your interest in this air conditioner. The ENERGY SAVER mode is designed to operate only while the air conditioner is running in the COOL mode. The difference between the Energy Saver mode and the standard Cooling mode is that the fan shuts off at the same time as the compressor, and will cycle up to test the air temperature every 3 minutes. If the temperature is rising during that 3 minutes, then the compressor and the fan will both turn back on to cool the room. If the temperature remained fairly close to constant during those 3 minutes, then the fan will shut off again, and will wait for another 3 minutes. If there are any additional questions concerning the operations of this machine, please contact our Customer Interactive Center at 800-243-0000 for assistance.
Answered by: NeilE
Date published: 2020-07-10

Can I use as a through the wall installation with 2 by 6 studs? Is there a standard 16 by 26 sleeve available for the installation. If so what is the part number

Asked by: Dennis Hanson
We appreciate your interest in this air conditioner. It is not recommended to use this device as a Through-the-Wall air conditioner or with any manner of wall sleeve. Doing so can cause cover of the ventilation on the cabinet, resulting in premature failure of the cooling system. Proper operation of this device would have it located in a standard window.
Answered by: NeilE
Date published: 2016-05-13

Is it normal for the heat function to keep turning off? It's not on energy saver. I have it set to heat.

Asked by: Steve909
I have this same question! It blows hot air for approximately 75 seconds, then stops blowing for 3 minutes. The cycle repeats over and over. I called tech support, and they said it's because my room is too small for the 12,000 BTUs. Don't believe that. It was installed about 2 months ago.
Answered by: NOheat
Date published: 2016-02-06
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