To properly experience our website, you will need to use an alternate browser or upgrade to a newer version of internet Explorer (IE9 or greater).

The website utilizes responsive design to provide convenient experience that conforms to your devices screen size. In order to get the best possible experience our LG.COM website please follow below instructions.

If you’re using Internet Explorer 8 or earlier, you will need to use an alternate browser such as Firefox or Chrome or upgrade to a newer version of internet Explorer (IE9 or greater).

If you’re using Internet Explorer 9 and higher, turn off your Internet Explorer browser’s “Compatibility View settings” by following steps below:

  • Right click at the top of your browser and make sure the “Menu Bar” option is selected
  • Select “Tools” from the menu bar and then select “Compatibility View settings”
  • In the pop-up menu uncheck all three boxes and click “Close”
  • Your browser window will automatically refresh and you’ll be ready to go
Skip to Contents Skip to Accessibility Help

12,000 BTU 230v Through-the-Wall Air Conditioner

  • LT1236CER

Key Features

  • ENERGY STAR® Qualified
  • Remote Control
  • 3 Cooling & Fan Speeds
  • Trim Kit Included
BTU Performance 11,500/11,800
CEER 10.5/10.5
EER 10.6/10.6
Dehumid. (Pts/Hr) 3.9
Dry Air Flow (CFM) 265
dBA Level (Indoor / Outdoor) 59/65
Est. Cooling Area (Sq. Ft.) 530
Refrigerant R32
Thermostat Control Thermistor
Air Deflection 4-Way
Remote Control Yes
Auto Restart Yes
Energy Saver Function Yes
Timer 24 Hr. On/Off
Filter Alarm Function Yes
Fan Speed Cooling 3
Fan Only Speed 3
Compressor Rotary
In Door Fan Type Turbo
Type Air Discharge Top Discharge
Outdoor Vent / Exhaust Yes
Chassis Type Slide In-Out
Available Colors White
Voltage / 60 Hz 230/208
Watts (Cooling) 1,080/1,110
Rated Amps (Cooling) 5.5/5.0
Product (WxHxD) 24" x 14 13/32" x 20 3/32"
Shipping (WxHxD) 27 23/32" x 17 13/32" x 22 13/32"
Net Weight 82 lbs.
Shipping Weight 91 lbs.
Wall Sleeve AXSVA1
Wall Sleeve with Stamped Aluminum Grille AXSVA4
Stamped Aluminum Grille AXRGALA01
Limited Warranty 1 Year Parts and Labor
UPC 048231379649

What People Are Saying

Rated 4 out of 5 by from GREAT UNIT-FITS LIKE A GLOVE TOO! I purchased this unit on line on April 6th 2017 and it arrived at the store on April 19th, 6 days ahead of schedule! Great job Lowes. I installed this with the help of a friend. It slid right in to my sleeve. This unit comes with foam insulation to put around the edges but the unit fit like a glove so I didn't use much of it. I tested the unit and its awesome! Thank you Lowes and thank you LG.
Date published: 2017-04-20
Rated 5 out of 5 by from This is the second unit that we have purchase for our Arizona Room, first unit lasted 10 years, we when back to LG for the quality and service they offer. The new you has been installed for a month and is working great in the Arizona summer temps.
Date published: 2016-09-05
Rated 4 out of 5 by from Just Installed Cools OK, installed in FROG. Unit will not slide into sleeve far enough to have only face of unit exposed inside of FROG. Unit only comes in white.
Date published: 2016-06-18
Rated 4 out of 5 by from keeps you cool I bought this unit to replace a broken unit and to avoid having to go with central air which I really could not afford. It works excellent and keeps our small 1025 square foot house very comfortable. It was 90 degrees 3 days in a row . It is loud though but that doesn't bother me. I never had to turn the fan higher than the 1st setting or the temp below 70.
Date published: 2016-05-30
  • y_2017, m_6, d_27, h_12
  • bvseo_bulk, prod_bvrr, vn_bulk_1.0.0-hotfix-1
  • cp_1, bvpage1
  • co_hasreviews, tv_0, tr_4
  • loc_en_US, sid_MD05601938, prod, sort_[SortEntry(order=SUBMISSION_TIME, direction=DESCENDING)]
  • clientName_lg
  • bvseo_sdk, java_sdk, bvseo-
  • CLOUD, getReviews, 49ms

We're here to support you with our product.

View LT1236CER Product Support

Contact us for any support 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.

  • bvseo_sdk, java_sdk, bvseo-
  • CLOUD, getContent, 11ms
  • bvseo-msg: The resource to the URL or file is currently unavailable.;