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Key Features

  • 17,500/18,000 BTU
  • EER 11.2 / CEER 11.1
  • 3 Cooling & Fan Speeds with Auto Cool
  • 4-Way Air Direction

What People Are Saying

Rated 1 out of 5 by from Most horrible ac ever I bought this barely 3 years ago brand new,months into having it,it went out and was fixed for free bc it was still covered under warranty, here I am now,barely 3 years later and the whole thing shut off and will not stay on and keeps tripping the reset button,I'm a single mom of 3,now we have no ac and I cant afford a repair man or a new ac and LG will not help,I will NEVER purchase and LG product ever again!!!
Date published: 2018-09-04
Rated 1 out of 5 by from Poor Quality The compressor runs even when the unit is off. No replacement parts are available.
Date published: 2018-08-01
Rated 3 out of 5 by from Holding my breath Bought this unit to replace a previous LG model that failed two months after the warranty expired. Thankfully we had purchased the extended warranty and were reimbursed in full. I had to purchase the same unit as Home Depot didn't carry another manufacturer in this size. I also could only apply the reimbursement at Home Depot. This unit is currently working well. couldn't afford the warranty this time! Fingers crossed...
Date published: 2017-10-03
Rated 1 out of 5 by from eldon greer yes my air cond is not working it worked 4 . 2 weeks and not sended and its hot here in missouri waiting 4 weeks 4 parts and no air
Date published: 2016-07-18
Rated 5 out of 5 by from Performs as well or better than my previous LG A/C Bought a little over a month ago, to replace almost the identical model I had installed 8 years ago. Better energy rating, cools really well especially now during N.E. Floridas' seemingly endless string of heat waves. My 1250 sq. ft home stays cool because I close off 3 rooms we seldom use anyway, bedroom and Mancave have their own 5000 btu a/cs. This new model used a different freon than the old one, has a red dirty filter warning light, and a lift out having to open a front grill which with a little age begins to rattle, buzz and vibrate. The cost was about the same as the LG unit from 8 yrs ago. The factory warranty isn't nearly as good as in years past so I purchased a 3 yr extended warranty. Over the years the old LG unit had to be recharged, the outside coils replaced and a new compressor installed...all on warranties, never cost me a dime. I run this a/c 24/7 from the last of April to the end of October most years only shutting off for bad storms or vacations.
Date published: 2016-07-09
Rated 5 out of 5 by from Economical and good quality I bought this unit because the central system was costing us so much money, and it the unit ran day and night. It still didn't cool the 950 square feet of living space, back bedrooms weren't cool. This unit, LG, was place in the dinning room window, and with the aid of a couple fans cools the entire living space. It has a energy saver, so I set the temp. and it turns off/on costing me 1/3 of the price the central air conditioner cost. Until I can fix the central air this LG is our main source of conditioning, and I will always keep this unit as a back up. The front grill was a challenge, but once it was put on securely it stays in place. No water drip at all, or its so little it evaporates before I can notice. 110 degree weather and the unit works terrific.
Date published: 2016-07-06
Rated 1 out of 5 by from poorly manufactured poor quality control, parts are not checked for fit, front grille assembly does not stay on steel box housing, keeps popping off, had to use tape to keep it in place
Date published: 2016-06-02
Rated 4 out of 5 by from Great at Cooling the Living Room This a/c is great at cooling the living room and the dining room and it is also quiet at low fan speed. The only thing I don't like about the a/c is that it drips a lot of water in the back. I have to put a bucket down to catch the water leaking from the a/c. Within two hours, the a/c drips almost a gallon of water. The a/c repair man said this is normal with the new energy star a/c. I would have given this 5 stars if not for the dripping water.
Date published: 2015-09-02
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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.

Hi there. The energy saver light is always green when it's on. It turned to orange once I had it off for a bit then turned it back on. Is that normal? 

Asked by: Hollie
We appreciate your interest in this air conditioner. We might be able to make more of a determination as to what is occurring with this machine if there were more information on how long the unit was inactive before starting it again, as well as the condition of the air filter at that time. Please contact our Customer Interactive Center at 800-243-0000 for more assistance.
Answered by: NeilE
Date published: 2016-08-02

I have a lw1815er 18000 btu I need a front cover does anyone have one or know where I can get one

Asked by: Simpleman
Parts and accessories can be obtained through our parts distributor, MCM Electronics. Their contact number, for placing orders, is 800-824-9491. You can also use their website, at The part number for this item is: AEB74086002.
Answered by: NeilE
Date published: 2016-07-29

I have a window unit LW1815ER. There is a vent lever sticking out of the vent (where air comes out) to open or close the vent, not the levers that change the direction of the air flow. I was wondering what is it for, not sure when it should b open & close

Asked by: myaige
According to the information listed on page 18 of the owner’s manual, the ventilation lever must be pressed in, for the CLOSED position, in order to maintain the best cooling conditions. When some measure of fresh air is necessary in the room, set the ventilation lever to the OPEN or OUT position.
Answered by: NeilE
Date published: 2016-06-29

 We have recently purchased the lw1815er and it works great! Just wondering if the unit can read the room temp instead of displaying the set temp? 

Asked by: tatordevoe
I apologize, but no; the temperature set in the display will only show the set temperature. It will not display the current room temperature.
Answered by: NeilE
Date published: 2016-06-02

Need remote where can i order one?

Asked by: Tom p
We appreciate your interest in this Air Conditioner. Parts and accessories can be obtained through our parts distributor, MCM Electronics. Their contact number, for placing orders, is 800-824-9491. You can also use their website, at
Answered by: ShenaS
Date published: 2016-05-03

Is it possible to recharge the freon in the u it's you guys provide? I ask because it seams to be not getting as cold as it was last summer. 

Asked by: Devon
We regret the trouble you have experienced with this air conditioner. If this device is no longer cooling properly, then it is likely 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: 2016-04-13

Lost my owner's manual. How do I reset the clean filter light. I cleaned the filter, but the light is still on.

Asked by: Vicster
Hold the temperature buttons(up and down arrows) at the same time. This should reset it.
Answered by: lula57
Date published: 2015-08-20

I see no reason at all why this unit could not be installed in a wall, given that the opening dimensions H x W are appropriate.

I see no reason why this unit could not be installed in a 6 inch wall. Would there be an issue with the louvers being blocked?
Asked by: Jeffrie
The installation instructions provided in the owner's manual for the LG Window Air Conditioner, Model # LW1815ER only describe installation of this unit in a window and we can only advise you on installations that are consistent with those instructions. Forgoing those instructions is discretionary but you should also be aware that installation of the unit in a manner that is not consistent with that as described in the owner's manual voids any warranty on the unit...^IFV
Answered by: LGJoel
Date published: 2017-01-27
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