






❄️ Stay cool, save energy, and own your space with LG’s sleek wall AC!
The LG 11,800 BTU Through-the-Wall Air Conditioner delivers efficient, customizable cooling for rooms up to 530 sq. ft. Featuring energy-saving R-32 refrigerant, 3 fan speeds, and 4-way air deflection, it ensures precise comfort. Designed for through-the-wall installation with a remote control and washable filter, it combines quiet operation with smart features like auto-restart and a 24-hour timer, making it ideal for modern apartments and living spaces.
| ASIN | B01D4XL8D2 |
| Additional Features | Remote Controlled |
| Air Conditioner Application | Residential Indoor |
| Air Flow Efficiency | 265 Cubic Feet Per Minute Per Watt |
| Best Sellers Rank | #120,749 in Home & Kitchen ( See Top 100 in Home & Kitchen ) #1 in Through-the-Wall Air Conditioners |
| Brand | LG |
| Brand Name | LG |
| Capacity | 3.9 Pints |
| Color | White |
| Compressor Type | rotary_screw |
| Control Method | Remote, Touch |
| Controller Type | Remote Control |
| Cooling Power | 11800 British Thermal Units |
| Core Material | Aluminium Alloy |
| Customer Reviews | 3.8 out of 5 stars 1,954 Reviews |
| Efficiency | High |
| Energy Star | No |
| Filter Type | Washable |
| Form Factor | Stand Alone |
| Global Trade Identification Number | 00048231379649 |
| Installation Type | Packaged |
| Inverter Type | No Inverter |
| Is Outdoor Unit Required | No |
| Is Product Cordless | No |
| Item Dimensions D x W x H | 20.1"D x 24"W x 14.4"H |
| Item Weight | 82 Pounds |
| Manufacturer | LG |
| Model Name | LG 11,800 BTU Through-the-Wall Air Conditioner |
| Model Number | LT1236CER |
| Noise | 59 Decibels |
| Number of Power Levels | 3 |
| Power Source | Corded Electric |
| Product Dimensions | 20.1"D x 24"W x 14.4"H |
| Refrigerant | R-32 |
| Seasonal Energy Efficiency Ratio (SEER) | 13.0 |
| Special Feature | Remote Controlled |
| Start Year | 2015 |
| Start year | 2015 |
| UPC | 048231379649 |
| Voltage | 230 Volts |
| Warranty Type | Limited |
| Wattage | 1080 watts |
| Window Opening Minimum Height | 14.4 Centimeters |
| Window Opening Minimum Width | 240 Millimeters |
M**E
Quiet, efficient
My last AC unit was much louder than this one. Hoping that this one will last much longer than my last one (keystone) 06/14/25. Easy to install with another person, fairly simple instructions, and works with the temperature control. Quickly (3-5hrs) cooled my 700 sq ft apartment from 78°F to 72°F. For the negative reviews: Through the wall AC unit will create noise. This one is quieter than my last keystone one and the one before that ( brand I don't recall) It does require a ±240V outlet with two prongs that are in line with each other, along with a ground. The prongs flats are towards the ground in a straight line. For the negative reviews: All AC units, especially through the wall and maybe window units create noise. This one, in my experience, is quieter. It does require an appliance 240V outlet. This unit does not provide heat only good cold air conditioning
F**K
Efficient and useful
Second time buying this, the first one i've had for 5 years and works like a charm in my bedroom. So decided to get a second one for the other room. I think it works best for medium to small rooms, it has an energy saver mode which helps regulate the cooling and then changes it to a fan mode once the temperature has been met/adjusted. overall love it, its great for the price. Design looks great too. in terms of noise, you can hear it working for sure, but it switches around so it'll go quieter after a certain point and then rev back up again when it goes back to cooling mode. No water leakage.
A**R
Design Flaw - Overheats
I had the same experience as Matt Punk. Sadly, I bought the unit over Memorial Day and didn't use it for weeks because it wasn't warm enough so I didn't notice the design flaw until it got into the 90's with high humidity. Now my return window has expired. It overheats and shuts down with the error code CH34. LG's website suggests that the error code relates to the coils being dirty or the unit needs shade from the sun. Well, the coils are not dirty because it is brand new and the sun doesn't hit that side of the building. Plus we only run it at night because it's in our bedroom. I called LG customer service and they tried to tell me the same thing. She finally agreed to send someone out to look at the unit and the repairman arrived yesterday. He told me that he sees tons of CH34 error codes on units that are in a sleeve and proceeded to tell me that the sleeve is the problem (it is old). However, when he pulled out the unit he admitted that the louvers for the heat to escape are substantial enough and that it really shouldn't be overheating. He actually told me that if I had purchased a Frigidaire or Friedrich, we most likely would not have this problem. I think that the fan in the unit that blows the hot air out does not blow hard enough for the air to leave the sleeve so it just stays inside resulting in the overheating. Not a defect, said the repairman, so we are stuck. The design of this air conditioner is flawed. He also told me that LG is aware of the problem, but doesn't want to go through the hassle and expense of a recall. You will regret spending your money on this. I sure do. Incidentally, we have a Frigidaire in the living space and it has the same sleeve conditions as in our bedroom. No problems whatsoever.
K**1
A reasonable wall A/C
Unlike some of the other reviews, my unit arrived via UPS in fine shape. The packaging was robust and in tact. It was dropped off two days late by a pair of UPS employees who informed me “It’s heavy.” They were correct. I scooted it inside and enlisted friends to help me get it upstairs and into the wall to replace en existing, super noisy unit. The awful instructions will not accommodate all wall sleeves. Ours are 31 years old and are much taller than any of the newer styles. The instructions do not outline WHY you should place a small piece of foam here or there, instead opting for tiny diagrams and poor English. Explaining a little bit of the why is very helpful to those of use who are mechanically inclined. Only after getting all the foam in place inside the sleeve did I realize the new LG is 4”+ shorter than the wall sleeve. What a pain. It looks like they designed the buttons to be used while looking down at them. Our unit is mounted high on the wall and you must hold the remote up as high as you can and angle it downward to get it to work. The bottom of the temperature setting readout is obscured because it’s angled upward. Overall it is a quiet unit. The interior fan is loud on speed 3, but that’s expected. The compressor makes a thud when it turns on or off but is otherwise quiet in operation. The front grate rattles intermittently because it’s a poor design and cheap plastic. The clean filter light illuminates every 2ish weeks because it counts 250 hours of unit on time, not running time. The coarse dust filter hasn’t been dirty yet. In energy saver mode it may not run the compressor for hours if the room temperature is acceptable. The fan comes on briefly every 3 minutes to check if the room needs more cooling while in energy saver mode. This is nice because it’s not wasting electricity but also annoying because it’s always there as a reminder of how long you’ve been lying there at night trying to fall asleep. Temperature control is fine. Setting it to energy saver and 69°F renders a high of 74°F and a low of 72°F. This very acceptable since I don’t want it cooler than 72° anyway. The unit pumps out cold, cold air and the fan moves plenty of that cold air. Overall it works well and is relatively quiet. It had given us no problems for the whole summer. It needs better instructions, a tiltable control surface and higher quality exterior components to garner that fifth star.
M**N
Measure, measure, measure before ordering.
Very happy with this purchase. Placed it in the apartment above our garage in the existing opening after removing the old unit. It worked for fit and the cord is more than long enough to reach the plug. The fellows who did the install did a really nice job. Keeps the room very cool and comfortable according to our houseguests (haven’t had need of the heater just yet for guests). Looks good.no leakage, room smells nice, and the remote control works fine. It was very heavy and took 2 younger adult men (we are well past the definition of young unless you compare us to a centenarian, then we’re young).
M**O
LG was a good decision.
It's a little noisy, but honestly great and it still works 6 years later. I bought a Frigidaire at the same time, and I just found out that one has grown moldy inside because it had a styrooam inside that was just asking to grow mold. The LG has a plastic interior, and honestly looks pristine compared to it's counter-part. I'm very happy to see that LG made better design decisions and a quality product.
L**H
It is a high-quality product at a reasonable price.
I bought this LG through-the-wall air conditioner to replace my old window unit that was noisy and inefficient. I am very happy with my purchase. This air conditioner is quiet, powerful, and easy to use. It cools my bedroom quickly and evenly, and keeps the temperature and humidity at a comfortable level. It has three cool and fan speeds, and a remote control that lets me adjust the settings from anywhere in the room. It also has an energy saver mode that saves me money on my electricity bill. The installation was not too difficult, as it fits most standard wall sleeves. The unit came with a trim kit and a mesh grille that make it look neat and sleek. The filter is washable and reusable, and the unit has a filter light reminder that tells me when to clean it. The unit also has an auto-restart feature that resumes the operation after a power outage. I think this is a great product for anyone who needs a reliable and versatile through-the-wall air conditioner. It is a high-quality product at a reasonable price. I would highly recommend it!
F**E
STOPPED WORKING AFTER 2 WEEKS OF USE
Purchased this to replace a 10 year old Kenmore unit. Installation was plug and play and the unit started blowing cold air right away. All was well until the temperature got above 85 outside and the unit suddenly stopped blowing cold air. It displayed no errors and showed no other indication of failure. I spent hours troubleshooting to no avail. As of today, I am stuck with this broken unit after having paid money to have it professionally installed. Amazon offered me a measly 20% of the price to keep the item or ship it back at my own expense (likely more than the cost of the unit). Luckily LG warranty is sending out a repair tech, however, for a new product this is simply unacceptable. Buyer beware of purchasing large heavy items from Amazon as they will make you pay for shipping no matter how defective the product they sold you it. P.S. It is super LOUD! UPDATE: 7/1 Repair tech was sent out and "educated" us on the unit's proper operation i.e. told us that if it was too hot outside and inside then the unit may not work properly since it's working too hard. The unit vents out under our deck which he says is the problem but when I mentioned that our old Kenmore unit worked fine for 10 years before crapping out he explained that "they don't make them like that anymore" i.e. in working order. STAY AWAY FROM LG. THE BRAND NO LONGER DENOTES REASONABLE QUALITY.
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