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

The LG.com 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

18,000 BTU Heat/Cool Window Air Conditioner with Remote

  • LW1813HR

Key Features

  • Seasonal Heating & Cooling
  • Multiple Cooling/Heating Speeds
  • 4-Way Air Direction
  • Remote Control
PERFORMANCE
EER 9.7 / 9.7
Dehumid. (Pts/Hr) 5.5
Dry Air Flow (CFM) 430
dBA Level (Indoor / Outdoor) 55 / 63
Est. Cooling Area (Sq. Ft.) 1000
BTU Performance Cooling 17,500 / 18,000
BTU Performance Heating 9,800 / 12,000
DIMENSIONS
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.) 136
Shipping Weight (lbs.) 150
FEATURES
Heating & Cooling Yes
Thermostat Control Thermistor
Air Deflection 4-Way
Remote Control Yes
Auto Swing Yes
Energy Saver Function Yes
Programmable Timer 24Hr, On/Off
Fan Speed: Cooling (Heating) 2(2)
Fan Only Speed 2
Compressor Rotary
Indoor Fan Type Blower
Type Air Discharge Side by side
Outdoor Vent / Exhaust Yes
Chassis Type Slide In-Out
MATERIALS/FINISHES
Available Colors White
ELECTRICAL RATINGS
Voltage / 60 Hz 208/230
Watts (Cooling) 1,800/1,850
Watts (Heating) 3,100/3,670
Rated Amps (Cooling) 9.0/8.3
Rated Amps (Heating) 15.0/16.0

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
Rated 5 out of 5 by from Turned out to be a work horse! I am building my art studio in the deep south of Alabama. It is over 400 sq.ft. with 10ft wall-ceiling. I have two french doors (with blinds) in front where the morning and afternoon sun directly hit. There is no insulation on that wall nor dry wall as of yet; ceiling is not insulated either. One side wall is attached to the house and the other is insulated where I installed a 4ft.H x 31/2ft W window. The AC was installed in this window which is towards the front of building and only 2ft above the floor. I still have construction going on and an ATV blocking its air flow, BUT even with all this against it working properly it still got my studio down to 74 degrees (Fahrenheit). Hardly a sound...in fact I have to check to see if its on.
Date published: 2013-07-06
Rated 5 out of 5 by from This product lives up to my expatations. We have been able to use both the air and heat and the worked very good. The energy saver feature work good and the auto swing has worked great.
Date published: 2013-03-13
  • 2016-02-08T07:39CST
  • bvseo_cps, prod_bvrr, vn_cps_3.1.6
  • cp_1, bvpage1
  • co_hasreviews, tv_0, tr_5
  • loc_en_US, sid_MD05030280, PRD, sort_mostRecent
  • clientName_LG
  • bvseo_sdk, java_sdk, bvseo-2.3.0.0
  • CLOUD, getReviews, 7ms
  • REVIEWS, PRODUCT

We're here to support you with our product.

View LW1813HR Product Support

Contact us for any support inquiries.

ASK & ANSWER

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.

What is the "fresh air vent?" My unit will blow heat when I turn on the heating element, but then blow cool air. It goes back and forth from blowing heat to blowing cool. I don't like waking up to cool air in the morning when it's already cold outside.

Asked by: Peoples
We regret the trouble you have experienced with this air conditioner. The FRESH AIR VENT lever is a plastic stick which should stick through the upper vent grille on the front of the device. When this lever is pulled OUT, the Fresh Air Vent is OPEN; when pushed IN, the Vent is CLOSED.
Answered by: NeilE
Date published: 2016-01-27

When heat is on and reaches desired temperature it doesn't shut off

Asked by: Robinwiley
We appreciate your interest in this air conditioner. The description provided is correct and proper operation. The thermostat on this unit will not deactivate the unit when a heat setting is reached. This is in place for the cooling operations.
Answered by: NeilE
Date published: 2016-01-13

The unit automatically will switch from AC to Fan or Heat

This unit will go from AC to Fan or even AC to heat on it's own. The problem started about two days ago, the unit is a year old.
Asked by: Leslie50
I don't know about the heat part yet, but my unit has an environmental feature where when the set temp is reached the AC automatically goes to fan. It goes back and forth as the temp varies in the room
Answered by: saxman79
Date published: 2015-11-04

Looking at installing an a/c with heater window unit. The room is 600 sq.ft. Should I go with an 18000btu or a 12000btu a/c?

Asked by: Snug
My room is 16 x 20 ft. It has a stair well going down away from the unit. The walls at the long end are 4 ft and the center is almost 10 ft. Close to the unit, it cools very quickly. Takes a bit more time for the whole room. Set at 72 with outside temp hovering around the low 90's, I feel it works well, and no need for 220 volts.
Answered by: saxman79
Date published: 2016-01-13

Can model LW1813HR be wall mounted?

How much clearance is required in the back and on the sides where the louvers are located?
Asked by: bally
My installer put the unit under the window, i.e., through the wall, to allow me use of the window for light. The wall is 4 " thick . They cut the hole to fit and did a little caulking. No problems with its use.
Answered by: saxman79
Date published: 2015-03-21

A/C + heat unit overheating

18000 BTU LG LW1813HR a/c + heat unit set at lowest heat setting possible (60) overnight. Next morning room temp reading at 85. Unit is pouring heat out. Turned off and unplugged unit. Any idea what can cause this?
Asked by: KB65
We regret the trouble you have experienced with this air conditioner. If the unit is heating too much, 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: 2014-02-06

Why does my AIR/HEAT unit blow, COLD air in heat mode?

My two year old, LG Air/Heat unit blows warm air for approximately three minutes and cold air for two to four minutes and repeats in Heat mode on the highest setting. This is very uncomfortable. How can it be corrected?
Asked by: Cop1
We regret the trouble you have experienced with this air conditioner. The unit should not have access to any cold air when it is operating in the HEAT mode, unless the FRESH AIR VENT is open, and it is cold outside. Check this feature, to ensure that it is closed. If it does not resolve the matter, then the air conditioner 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: 2013-10-24

Does energy saver mode also apply to heat?

In energy save cool mode, the unit shuts off once desired temperature is reached. Does the LW1813HR do this when in heat mode? Does energy save function work when the unit is set to heat?
Asked by: DavidD
I apologize, but no; the Energy Saver mode does not operate with the heat function. This feature is completely related to the sealed cooling system. As this unit utilizes an electric heating element, it would have no association with the sealed system.
Answered by: NeilE
Date published: 2013-10-22
  • 2016-02-08T08:17CST
  • bvseo_cps, prod_bvqa, vn_cps_3.1.6
  • cp_1, bvpage1
  • co_hasquestionsanswers, tq_15
  • loc_en_US, sid_MD05030280, PRD, sort_recentAnswersFirst
  • clientName_LG
  • bvseo_sdk, java_sdk, bvseo-2.3.0.0
  • CLOUD, getContent, 8ms
  • QUESTIONS, PRODUCT