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

  • LT123HNR

Key Features

  • Universal Fit for Sleeve
  • Gold Fin Anti-Corrosion
  • 2 cooling and fan speeds
  • 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
BTU Performance Heating 11,200 / 9,200
Net Weight (lbs.) 80
Shipping Weight (lbs.) 87
Carton Height (inch) 18 4/32
Carton Width (inch) 27 23/32
Carton Depth (inch) 22 13/32
Dimension Height (inch) 14 13/32
Dimension Width (inch) 24 21/32
Dimension Depth (inch) 19 21/32
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 XA
Auto Restart Yes
Fan Only 3
Real Grille Yes
Voltage / 60 Hz 208/230
Watts (Cooling) 1,310/1,270
Watts (Heating) 3,500/2,900
Rated Amps (Cooling) 6.0/6.4
Rated Amps (Heating) 15.3/14.0
Warranty 1 Year Parts and Labor(Limited In-Home Service)

What People Are Saying

Rated 1 out of 5 by from Not worth the money Unit stopped working after a year of minimal service. Unit was out of warranty and repair cost was prohibitive.
Date published: 2013-11-12
Rated 5 out of 5 by from all instructions are accurate. am very pleased with the way the unit fits the wall sleeve and its great performance.
Date published: 2012-11-18
Rated 5 out of 5 by from Excellent for my need Added a sunroom on, 200 sq ft, with a 7 windows and a sliding glass door. Cools excellent. Leave the door open from the main house, leave the LG in power saver mode, can't even tell a difference in the temps. To me, it is just a little bit loud, but ok.
Date published: 2011-09-18
Rated 4 out of 5 by from Just in time! My family has been so lucky to have this A/C unit. We picked up one of the last dusty old boxes at Lowe's during a heatwave. Since then we've run this thing day and night for 4 to 7 days in a stretch and it always does a great job keeping us comfortable.
Date published: 2011-09-16
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We're here to support you with our product.

View LT123HNR 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.

How do I connect this, it has a weird looking plug . Is there an adapter or module I can buy?

Asked by: Almayayo
We regret the trouble you have experienced with this air conditioner. Compare the power cord with the diagram on page 9 of the Owner’s Manual. Each of the different connections denotes a difference in the electrical supply. As such, it is NOT recommended to use any form of adapter with this connection.
Answered by: NeilE
Date published: 2015-10-30

2 fan speeds on window air conditioner LT123HNR

The AC unit comes with 2 programmed fan speed settings but is noisy with either fan speed setting. Can the lower fan speed setting be re-programmed and adjusted down to reduce the noise level?
Asked by: carl94
We regret the inconvenience you have experienced with this air conditioning unit. The fan speeds cannot be reprogrammed. However, if you believe that the unit is improperly noisy, then the unit may require service. 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: 2012-11-14

Does the LT123HNR need a condensation drain kit?

I purchased this ac a week ago and installed it with its sleeve. I noticed that this unit didn't have a drain for condensation. When I started using the ac water condensation built up in what appeared to be a pan in the back left of the unit but it had no way to drain. I didn't see any plugs for a drain hole either. What is the solution for the condensation buildup in the back? Do you sell a drain kit and where can I buy it? Thanks
Asked by: Kenl
NeilE, I understand what you're saying but, as I stated in my question, the wall ac is installed in a sleeve. I see the cutout in the back right of the ac right where the coils are. I suppose this is where the water runoff would drain out. With the ac installed in a sleeve any excess water would drain from the ac right into the sleeve and this would become a big mess. Is there a solution for this wall ac, which is installed in a sleeve, for drainage. The idea is to get the excess water from the ac, through the sleeve and to the ground in as clean a way as possible.
Answered by: Kenl
Date published: 2012-07-17

Does your heat/cool thru-wall have a heat strip or does it have a heat pump?

Asked by: Bearcat
We appreciate your interest in this product. The LT123HNR has an electric heater built into the air guide. It is not a heat pump.
Answered by: NeilE
Date published: 2012-03-08

is the cord on the right or left side of the back wall?

Asked by: Anonymous
Cord is on the front right side. The unit is installed through the wall where most of the unit is actually outside, which is important because water collects in the unit pan from dehumidification. If the unit is not installed properly water could run to the inside of the room or in your walls.
Answered by: OceanCrest
Date published: 2012-03-01

Is this unit sufficient to heat and cool a 500 square foot area

Asked by: Steve
In most cases you will not have a problem (depends on insulation). I use them in my motel on the beach and even with the sliding doors being left open and the customers constantly in and out, I don't get complaints.
Answered by: OceanCrest
Date published: 2012-03-01

Can a through the wall be mounted on a window?

Asked by: Ray
Not recommended, as this unit requires an additional sleeve for the warranty. However, if you use a sleeve with the unit, it could work. Just be aware of how heavy the unit is and support it well. I have done it as a temporary solution but would be concerned with it braking a window if not supported properly.
Answered by: OceanCrest
Date published: 2012-03-01

Can I use this product on my 220 line?

The plug does not match my receptacle - the company I purchased from, Compact Appliance, will not return my email. What recourse do I have?
Asked by: LN
If you bought the 220v unit. For 220v there are several types of outlets. You just need to replace you wall receptacle with the correct type. Any h/w store will have the correct one (less than a dollar usually). If you are not comfortable around electricity call an electrician.
Answered by: OceanCrest
Date published: 2012-05-07
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