18,000 BTU Heat/Cool Window Air Conditioner with Remote
  • Seasonal Heating & Cooling
  • Multiple Cooling/Heating Speeds
  • 4-Way Air Direction
  • Remote Control
18,000 BTU Heat/Cool Window Air Conditioner with Remote


  • EER
    9.7 / 9.7
    Dehumid. (Pts/Hr)
  • Dry Air Flow (CFM)
    dBA Level (Indoor / Outdoor)
    55 / 63
  • Est. Cooling Area (Sq. Ft.)
    BTU Performance Cooling
    17,500 / 18,000
  • BTU Performance Heating
    9,800 / 12,000


  • Product (WxHxD)
    26" x 16 27/32" x 30 5/16"
    Shipping (WxHxD)
    29 3/8" x 21 3/16" x 33"
  • Net Weight (lbs.)
    Shipping Weight (lbs.)


  • Heating & Cooling
    Thermostat Control
  • Air Deflection
    Remote Control
  • Auto Swing
    Energy Saver Function
  • Programmable Timer
    24Hr, On/Off
    Fan Speed: Cooling (Heating)
  • Fan Only Speed
  • Indoor Fan Type
    Type Air Discharge
    Side by side
  • Outdoor Vent / Exhaust
    Chassis Type
    Slide In-Out


  • Available Colors


  • Voltage / 60 Hz
    Watts (Cooling)
  • Watts (Heating)
    Rated Amps (Cooling)
  • Rated Amps (Heating)


  • UPC
What people are saying
Rated 4 out of 5 by from Does the job, beware if you dont clean it yearly After 3 1/2 years the heating coil rusted out and it had mold all over the blower and the coils.
Date published: 2016-01-20
Rated 5 out of 5 by from Best A/C Yet! This a/c unit is the best one we've had yet. Surprisingly quiet for the 18,000 BTU's power. Keeps a small condo (600 sq ft) comfortably cool even in Florida summer heat. Much superior to the two other a/c units we've had before this one. Highly recommend.
Date published: 2015-07-16
Rated 5 out of 5 by from Possitivly the best This unit was bought after the many reviews that I read. This unit is really quite, not the window shakers that you hear about. We put the unit on 76 degrees and it cools the whole house very comfortably in the hot Florida weather that we are experiencing this year. Installation was easy. This unit does the job!
Date published: 2014-09-26
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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.

I need to know if there is an adapter for the plug on my LG LW1816HR UNIT. It has a 230/208 volt 20 amp T plug, I need a regular strait household plug adapter. Is there any out there?

Asked by: Landon78
Hello, we can not advise any modification due to safety and fire hazard. ^AC
Answered by: Amber C
Date published: 2018-03-12

My ac unit won’t cycle on and off on the e-saver mode. It is also icing up the coils and stops cooling 

Asked by: Hillbillywille
Our help library offers support for the issues you are experiencing. Temperature Issues: http://www.lg.com/us/support/product-help/CT10000014-1341959982875-temperature-adjusts-on-its-own Icing/Freezing Issues: http://www.lg.com/us/support/product-help/CT10000014-1340896169650-ice-frost-behind-front-grille-freezing-up If you need further assistance with these issues please contact our support team via Twitter @LGUSSupport
Answered by: Shena
Date published: 2017-10-06

I have a window that is 49 inches wide. So my question is how long are the accordion parts that are installed on the side? I don't see them in the photo nor are they mentioned in the specifications section. 

Asked by: BetinaFarina
The LG 18,000 BTU Heat/Cool Window Air Conditioner with Remote, Model # LW1813HR is designed for installation in standard single-hung or double-hung windows that have actual opening widths from 29" to 41". The maximum width that the left and right frame curtains that come as included accessories can be stretched to cover the gap in a window after the air conditioner is installed is 41"...^IFV
Answered by: LGJoel
Date published: 2017-05-26

Where is the air float sensor located

Asked by: Bung
Our offices, in the United States, do not have product information for Australia. In order to obtain such information, it is recommended to check our subsidiary’s website, at http://www.lg.com/au/support/contact/support-here-to-help.jsp.
Answered by: NeilE
Date published: 2017-02-14

Turned heat on and it will not heat up

Asked by: Mike91
We regret the trouble you have experienced with this air conditioner. Please be aware that the heating element on this unit is not designed to be a primary source of heat. That being said, if there is no heat at all coming from the unit, then it 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 http://www.lg.com/us/support/repair/support-repair-provider-lookup.jsp.
Answered by: NeilE
Date published: 2017-01-07

When running the heat should the little stick you push in and out for vent. What position should it be in when I'm running the heat? Close, fresh air, or vent? 

Asked by: Ward Man 2
We appreciate your interest in this air conditioner. When using the HEAT function, it is suggested to have the Fresh Air stick in the CLOSED (IN) position to prevent cold air access.
Answered by: NeilE
Date published: 2016-12-10

when I turn the heat on it will not let me put it on energy saver how do I do that,

Asked by: TINAmayfield00117
We appreciate your interest in this air conditioner. The Energy Saver mode is designed to regulate the fan along with the compressor system. As the heater mode does not utilize the compressor, such regulation is not available. As such, it is not possible to activate the Energy Saver mode with the HEAT function.
Answered by: NeilE
Date published: 2016-11-11

with unit on thermostat set when heat is used the unit comes on and turns off after a minute or two .Room not warmed Just before heat stops colds air comes out then unit shuts off

Asked by: WBdr
We regret the trouble you have experienced with this air conditioner. The heating element of this machine has been designed to provide supplemental heat only, and cannot produce as much heating power as it does cooling power. Please contact our Customer Interactive Center at 800-243-0000 for additional information in this matter.
Answered by: NeilE
Date published: 2016-10-25
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