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18000 BTU Window Air Conditioner, Cooling & Heating

  • LW1816HR

Key Features

  • Seasonal Heating & Cooling
  • Multiple Cooling/Heating Speeds
  • Remote Control
  • 4- Way Air Direction
  • Timer
BTU Performance Cooling 17,500 / 18,000
BTU Performance Heating 9,800 / 12,000
CEER 11.1/11.1
EER 11.2/11.2
Dehumid. (Pts/Hr) 5.5
Dry Air Flow (CFM) 430
dBA Level (Indoor / Outdoor) 61/66
Est. Cooling Area (Sq. Ft.) 1000
Refrigerant R410A
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 (Heating) 2(2)
Fan Only Speed 2
Compressor Rotary
In Door Fan Type Blower
Type Air Discharge Side by side
Outdoor Vent / Exhaust Yes
Chassis Type Slide In-Out
Available Colors White
Voltage / 60 Hz 208/230
Watts (Cooling) 1,560/1,600
Watts (Heating) 3,100/3,670
Rated Amps (Cooling) 7.8/7.3
Rated Amps (Heating) 15.0/16.0
Product (WxHxD) 25 1/2" x 16 27/32" x 30 1/2"
Shipping (WxHxD) 29 3/8" x 21 3/16" x 33"
Net Weight 126 lbs.
Shipping Weight 139 lbs.
Limited Warranty 1 Year Parts and Labor
UPC 048231379526

What People Are Saying

Rated 5 out of 5 by from Great product Easy to install, but takes 2 people. Must be extremely careful not to damage condenser fins on both ends. Quiet operation. Cooling excellent. Would have preferred that documentation was on top of the unit instead of under it when un-boxing. Packaging was excellent and easy to unpack. Unit looks very nice. Love the "Auto Swing" feature.
Date published: 2017-05-26
Rated 5 out of 5 by from Great performance I purchased two LG LW1816HR window units to cool an insulated garage for short-term storage of my vineyard's grapes. After updating the garage electrical system, I installed both units by myself, plugged them in, and they worked great right out of the box(es). ( I didn't really need the heating function, but I purchased these units late in the season, and these were the only units I could locate locally). I was able to cool six tons of grapes and hold them for several days until I could ship the fruit.
Date published: 2016-12-21
Rated 5 out of 5 by from Great fitures I bought this A/c unit 7/16/2016 So far it holds up to my Standers
Date published: 2016-08-11
Rated 5 out of 5 by from A great air conditioner This air conditioner has been a blessing. My small house stays cool even on the 100+ degree days. I think it will be a great way to heat my house this winter.
Date published: 2016-07-27
Rated 5 out of 5 by from Cools GREAT! We bought this unit over a month ago to go in the shop we built for our business. It has worked out better than I expected! Installation was easy. I come to work in the mornings turn it on and within 10 to 15 minutes it has cooled the area to a pleasant 73 degrees, even on the hottest days. This unit is rated for 1000 sq. ft. The area we are cooling is 600 sq. ft. but has a high ceiling. The auto swing feature keeps air blowing to the front and back of the shop nicely. The filter was easy to remove, clean, and put back in. I can't comment on the heating ability yet but I'm super pleased with this unit so far!
Date published: 2016-07-25
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We're here to support you with our product.

View LW1816HR 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.

I have a brand new lg 18000 btu and is barely installed and doesn't blow cold air why ?

Asked by: Eduardotb
We regret the trouble you have experienced with this air conditioner. It is difficult to determine why this machine is not operating properly without an inspection by a qualified service technician. 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: 2017-06-06

Does model #LW1816HR require a neutral?

Asked by: Blomer
The LG 18000 BTU Window Air Conditioner, Cooling & Heating, Model # LW1816HR comes equipped with a power cord that has a current interrupter device attached to it. The plug on the power cord has a NEMA Configuration of 6-20P which is a 3-wire, 2 pole plug that must be plugged into a standard 250V, grounded 3-wire receptacle protected by a 20 Amp. Time Delay fuse or a 20 Amp. circuit breaker. The plug cannot be removed or modified. Window air conditioners are fed from single phase sources, so its branch circuit and its power cord consist of three wires, the ground, hot wire and neutral wire...^IFV
Answered by: LGJoel
Date published: 2017-05-02

Where can I get  a manual for my air conditioner 

Asked by: Jodiegirl
We appreciate your interest in this air conditioner and its operations. A copy of the owner’s manual can be obtained from our website at
Answered by: NeilE
Date published: 2017-04-21

How to make it blow cold air

Asked by: Jay mangal
you can try putting the unit in a window on the side of the house facing the wind
Answered by: trump
Date published: 2017-01-27

My it conditioner won't get cold... air is blowing wrong way

Asked by: beebit41
We regret the trouble you have experienced with this air conditioner. Please contact our Customer Interactive Center at 800-243-0000 that we might troubleshoot this matter with you.
Answered by: NeilE
Date published: 2016-09-13

Does this have heat strip or is it heat pump?

Asked by: Rcfauc
Heat Strip
Answered by: yomama123
Date published: 2016-08-30

Does this unit come with support brackets for outside under the window?

Asked by: Rocoso

I have just installed LW 1815ER I didn't realize it was 230V what can I do?

Asked by: Jim 22
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