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11,500 BTU Thru-the-Wall Air Conditioner with remote

  • LT123CNR

Key Features

  • Universal Fit for Sleeve
  • Gold Fin Anti-Corrosion
  • 3 cooling and fan speeds with Auto Cool
  • 4-way air direction
EER 8.8 / 8.8
Dehumid. (Pts/Hr) 3.8
Dry Air Flow (CFM) 290
dBA Level (Indoor / Outdoor) 52 / 61
BTU Performance Cooling 11,500 / 11,200
Net Weight (lbs.) 80
Shipping Weight (lbs.) 87
Carton Height (inch) 17 13/32
Carton Width (inch) 27 23/32
Carton Depth (inch) 22 13/32
Dimension Height (inch) 14 13/32
Dimension Width (inch) 24
Dimension Depth (inch) 20 3/32
Thermostat Control Thermistor
Air Deflection 4-Way
Remote Control Yes
Energy Saver Function Yes
Programmable Timer 24Hr, On/Off
Fan Speed: Cooling (Heating) 3
Compressor Rotary
Indoor Fan Type Turbo
Type Air Discharge Top
Outdoor Vent / Exhaust Yes
Chassis Type XB
Auto Restart Yes
Fan Only 3
Real Grille Yes
Voltage / 60 Hz 208/230
Watts (Cooling) 1,310/1,270
Rated Amps (Cooling) 6.0/6.4
Warranty 1 Year Parts and Labor(Limited In-Home Service)

What People Are Saying

Rated 1 out of 5 by from Worked great at first, then not. At all. Unit was purchased for home climate control to assist a person with MS who is very heat sensitive. For the first 6 months it ran fine & was everything we wanted. Then the fan motor inexplicably began making a horrific, unbearably loud, unending grating noise. It continued to produce cool air, however the fan motor is so loud you can't stand to be in the same room with it. Since 6 months had elapsed it was no longer warranted, & we didn't purchase extended warranty from Home Depot. We're in a isolated town where no one seems to repair residential AC. It's very disappointing, especially since it was so nice when it was working.
Date published: 2015-05-27
Rated 5 out of 5 by from Much better than past air conditioner Works as expected cools large room. One feature that is plus controls are visible from floor level. Last air conditioner you could not see from floor you had to climb up to see. This is one reason why I purchased it. A great value for a good price, delivered to my door by UPS.
Date published: 2013-06-06
Rated 5 out of 5 by from Nice programming feature and quality built Replaced a 15 year old unit with this unit in out master bedroom and used the original sleeve. It literally took 5 minutes to frame in and plug in. A little noisy on high speed but that nicely drowns out the barking dog next door when when were sleeping. Well worth the price.
Date published: 2013-05-23
Rated 5 out of 5 by from Awesome deal and works great! We are a housing authority who have purchased close to 50 of this exact unit for our elderly housing high rises! They work great and our residents are happy with them! Thank You for the great product! No complaints thus far!
Date published: 2012-08-28
Rated 5 out of 5 by from Great Product We love our AC. It is quiet and very efficient in cooling our great room. We have a second unit in our master bedroom, and together the whole house is comfortable without the noise of a window unit.
Date published: 2011-10-07
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We're here to support you with our product.

View LT123CNR Product Support

Contact us for any purchasing inquiries.


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

Is it normal to see thru to the outside around the damper when the vent is close?

When I look into the right horizontal/vertical louver - the vent level in the close position; there is space around the damper and I'm able to see thru to the outside. My concern is bugs/insects can come into the house thru the space around the damper Of all the choices I've researched, I'm glad I purchased the LG LT123CNR...quiet, terrific cooling, great value, good product; just odd to be able to see the outside around the damper.
Asked by: HappyCust
We appreciate your interest in this air conditioner. When the Fresh Air Vent is in the CLOSED position, there should be no gap to the outside of the ducting.
Answered by: NeilE
Date published: 2014-06-18

Do you have to purchase the optional sleeve?

After reading some of the reviews about this unit, some people were able to use there old air conditioners sleeve. Is this possible or do I need to purchase the sleeve for this unit?
Asked by: bobatown
We appreciate your interest in this air conditioner. Most of the Through-The-Wall units are designed with the same external dimensions, to be compatible with other wall sleeves.
Answered by: NeilE
Date published: 2014-05-23

Demand control in Apartment application

We have an apartment application with 166- LG LT123CNR air conditioners on the house electric meter? Do you have a demand control system that would prevent all of he AC units from being active at the same time? It would reduce electric demand charges if we could cycle 1/3 of them off in a rotating 15 minute block. Can separate remotes be programmed for this purpose and controlled when necessary?
Asked by: EcoEnergySolutions
I apologize, but no; this air conditioner was originally designed for operation on a dedicated circuit and not in tandem with any other devices. As such, it has no control device, such as that which you have mentioned. The compressor system is simply designed to cycle on and off in relation to the room temperature.
Answered by: NeilE
Date published: 2013-10-14

what type of AC plug does the model #LT123CNR have

I currently have a 220V outlet, plug type LDCI, 6-20. What plug does your Air conditioner come with as standard. Thank you.
Asked by: Bbbb1
The ELECTRICAL RATINGS for this unit are: Voltage/60Hz: 230/208 Watts: 1,310/1,270 Rated Amps: 6.0/6.4 (see attachment) Thank you for your question!
Answered by: Nadine
Date published: 2015-06-12

Where and How do i purchase the sleeve ???

Asked by: Anonymous
We purchased the sleeve for all of our units directly from Karls in Rapid City, SD when we purchased the unit. Any reliable appliance store should be able to supply for you.
Answered by: Tester1
Date published: 2012-08-29

Does this product meet the Energy Star requirement?

Asked by: Anonymous
We appreciate your interest in this air conditioner. The LT123CNR does not appear to be an Energy Star rated product.
Answered by: NeilE
Date published: 2011-12-28

which thru wall or window mount ac units actually work well as heat pump space heaters?

I just installed an LG split heatpump AC unit as a heater and I am impressed. Next, I want to install some through wall or window mounted units to use as space heaters in apartments.
Asked by: Anonymous
The units below can be installed in a window and will heat the space accordingly. LW2410HR 23,500 BTU Heat/cool Window Air Conditioner with remote LW1810HR 18,000 BTU Heat/cool Window Air Conditioner with remote LW1210HR 12,000 BTU Heat/cool Window Air Conditioner with remote We appreciate your feedback, please give us a “thumbs up” if this answer is helpful to you; and please let us know if we can assist you with anything else. Tank you! Have a great week!
Answered by: Nadine
Date published: 2011-12-05

does it ever have to be refilled with coolant?

Asked by: Anonymous
As long as the unit is properly maintained, the unit will not need any additional service.
Answered by: AmandaB
Date published: 2011-06-19
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