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LG 18,000 BTU Heat and Cool Window Air Conditioner with WiFi Controls, Smart Temperature Control for Rooms up to 1,000 Sq. Ft., White

  • Based on 1,224 reviews
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Availability: In Stock.
Fulfilled by Amazon

Arrives Thursday, May 15
Order within 11 hours and 53 minutes
Available payment plans shown during checkout

Color: White


Size: 18000 BTU


Style: Wifi 230V


Features

  • Supplemental Heat for Year-Round Comfort: Add warmth on cooler days with the supplemental heat option, making this unit perfect for both heating and cooling throughout the year
  • Customizable Cooling & Heating: With 2 cooling, heating, and fan speeds, plus a 24-hour timer, you can personalize your comfort with ease and create the perfect schedule for your space with LG's Heat and Cool Window Air Conditioner
  • Auto Restart After Power Outages: The auto restart feature automatically turns your air conditioner back on after a power failure, ensuring your space stays comfortable without interruption
  • Ideal for Medium to Large Rooms (Up to 1,000 Sq. Ft.): This 18,000 BTU unit is perfect for cooling and heating rooms up to 1,000 sq. ft., providing efficient temperature control for medium-sized spaces

Description

The LG 18,000 BTU Heat and Cool Window Air Conditioner is the SMART way to keep your house feeling comfortable no matter what the weather is like outside! LG ThinQ technology lets you control your air conditioner with your phone or use with Amazon Alexa and Hey Google to have control with the sound of your voice. This unit is ideal for cooling medium to large rooms up to 1000 sq. ft. and you can even add a bit of warmth on cooler days with the supplemental heat option. With 2 cooling and fan speeds and a 24-hour timer, you can create the perfect cooling schedule. 4-way air deflection lets the flow of air be directed where it's needed most, whether cooling, heating, dehumidifying, or just circulating air. If there is a power outage, the auto restart feature will automatically turn your unit back on when power is restored. Other features include a remote control, easy window installation kit, removable, washable filter, and a check filter alert. For added convenience, the unit operates quietly, ensuring a peaceful environment without disruption. Plus, the energy-efficient design helps reduce electricity costs while keeping your space comfortable all year round. The sleek, modern design seamlessly blends into any room, adding both functionality and style.

Specs & Other Info

SpecificationDetails
ManufacturerLG Electronics
ModelLW1821HRSM
TypeWindow Air Conditioner
Capacity5.5 Pints
Cooling and Heating Power18000 BTUs
FunctionsCooling, Heating, Dehumidifying
Special FeaturesRemote Control, WiFi Connectivity, Filter Reminder, Dual Functionality
Dimensions30.5"D x 25.5"W x 16.84"H
Energy EfficiencySEER 11.1, Not Energy Star Rated
ColorWhite
Voltage230 Volts
Noise Level57 dB
Weight126.5 pounds
OriginThailand
Surface CoverageUp to 1000 Sq Ft
FinishMatte
Warranty1-Year Limited
Accessories IncludedInstallation Kit, Remote Control

Frequently asked questions

To connect your LG air conditioner to Wi-Fi, first ensure your Wi-Fi is active and you have the LG ThinQ app downloaded on your smartphone. Power on your air conditioner, then open the app, select 'Add device', and follow the on-screen instructions to connect. Make sure your smartphone is connected to the Wi-Fi network you intend to use for the air conditioner.

Yes, this LG air conditioner is designed with both heating and cooling functions. It can efficiently cool a room during hot weather and provide heat during colder seasons, making it versatile for year-round use.

The LG 18,000 BTU air conditioner is designed with energy efficiency in mind, featuring an Energy Efficiency Ratio (EER) that complies with environmental and energy-saving standards. While specific EER may vary by model, it generally offers cost-effective operation and might be eligible for energy rebates in some areas.

You can control your LG air conditioner using the physical control panel on the unit, the included remote control, or via Wi-Fi using the LG ThinQ app. With the app, you can adjust temperature settings, modes, and schedules from anywhere, as long as you have an internet connection.

Top Amazon Reviews

🚀 Abunda's Overview

This is our summary and key points to consider based on customer reviews.


The reviewed air conditioning and heating unit receives high praise for its efficiency, easy installation, and performance in both heating and cooling spaces, making it a versatile solution for various seasons and needs. Customers have successfully used it in different settings, including homes without traditional heating or insulation, garages, and rooms not served by central heating and air. It efficiently heats and cools spaces while being energy-conscious, leveraging solar energy or generators for some users.

Pros

  • 💡 No assembly required and easy to install
  • 🌡️ Efficiently heats and cools, suitable for spaces up to 400 sq ft
  • ⚡ Low energy consumption, compatible with solar power and generators
  • 🔊 Quieter operation than expected, with a SM bonus for quietness
  • 💰 Under $500, making it an economically sound choice

Cons

  • 🌙 Heating performance might not meet expectations for all users
  • 🔧 Potential issues with warranty or replacement for business use
  • 📏 Certain models may require larger window sizes for installation

Should I Buy It?

If you're seeking a versatile, energy-efficient solution for both heating and cooling that's easy to install and operate, this product is an excellent choice. With its overall positive reviews, capability to work in different settings, and environmental considerations, it appears to be a worthy investment for those looking to enhance their comfort affordably. However, if you require robust heating in extremely cold conditions, you may want to assess its performance further or explore additional heating supplements.


  • PERFECT
Color: Bright White Size: 18000 BTU Style: Electronic 230V
I was wanting to rate the seller but Amazon has apparently lost their minds. Seller shipped FAST. Thank you! I bought this prior to foot surgery because I have only had wood heat exclusively, and needed a good heat source in order to stay off my feet (not need to tend the wood stove) so wounds would heal. I live in an old farm house that has ZERO insulation. This unit was easy to install and has worked beautifully for the 2 months I've been running it. It has a smooth start/end cycle and keeps the temperature STEADY (no big temp swings like cheap units) and is actually pretty efficient considering this old house. I LOVE this unit! Highly recommend! If you can afford the more expensive, larger model and have the window size for it, that model might be a little quieter. But this unit really blows the heat out and heats well. I'll assume the cooling (which I tested) will be as good at least. If this particular unit isn't so quiet (it's not bad, don't get me wrong), it's because it's a large unit that works! ... show more
Reviewed in the United States on February 2, 2024 by CrazyNeighborLady

  • Best investment LOVE THIS
Color: White Size: 1 Count (Pack of 1) Style: Electronic 115V
Let me start by saying I'm in florida. It has to be something powerful to cool us down. This device is on a poorly insulated front porch. Wow wow wow. She cools to the cool setting. Cycles on and off. For the 10 days a year were cold She heats it up not just takes the chill out, but heats it up. (Were not blasting it to 90s but a goodb73 will do. It cycles on and off keeping the room comfy. Not to much 1 way or the other, or some craziness that needs a babysitter. No more noisy than any other ac. Tells you when you need to clean the filter, and it don't lie. I found and ordered this ac here on Amazon. I swear on all that's good prior to it's arrival, I seen the EXACT same machine for DOUBLE in a big box store I'm happy I kept my order The only 1 thing for people that's like me. I'm not a handy man. It is a bit heavy. My son built a deal to help hold some of its weight off the back All in all we couldn't be happier with it. I can't say on if it did anything to my power bill. We were leaving the door open previous trying to make the house ac cool and the house heat warm it. And the same time we put that in we also put in a mini fridge so I'm not sure our bill changed much. ... show more
Reviewed in the United States on March 20, 2025 by J.B.

  • Great
Color: Bright White Size: 24000 BTU Style: Electronic 230V
We've had this installed since November 24' and it is a great unit. Cools our small house really well and the heat is awesome. To us worth ever penny.
Reviewed in the United States on January 5, 2025 by Dennis D.

  • Poor Product - Buyer Beware
Color: Bright White Size: 18000 BTU Style: Electronic 230V
What ever you do, don't buy this product. This is my 3rd replacement unit in 1 1/2 months. The first one (bought on 8/20/2024) didn't work as it made loud noised and the fan was hitting the shroud and something in the casing that could not be fixed. The 2nd one (replaced on 9/3/2024) replaced on received doesn't blow any cold air. All it does is blow hot air. I have a floral cooler in this small room and it is causing now my cooler to overheat. The 3rd one (just received today 10/10/24) is also broke. See the pictures above. You will see that the compressor isn't even anchored down. The grill is bent, the plastic shroud is broke, the case it sits in is bent and the list goes on and on. Now on with Amazon to have someone pick up the 2nd one and this 3rd one. I don't have the the box for the 2nd unit and the units weight 130 lbs. Lets see how the service is to resolve the issue to pick these up as I will never use LG again. Buyer beware if you are looking for a good quality product. What ever you do, don't depend on quality for this product. As a business owner, I have paid my staff to be on the clock waiting for the arrival to help with the install and 3rd time around with this type of product being poor and damaged, is really sad for the LG company. ... show more
Reviewed in the United States on October 11, 2024 by Marilyn Garry Marilyn Garry

  • Big, Heavy, but Works Well
Color: Bright White Size: 18000 BTU Style: Electronic 230V
The sheer size and weight of this thing make it a 2 or 3 person install. That's been my only downside so far. It's not as loud as the unit it replaced. The remote seems to work well. The thermostat seems to work well. It's cheaper to run than the unit it replaced. I haven't had much call for the heater function since its been 90+ here in Texas since I installed it. I'll try to remember to update in a few months when I might be using it. I have tested to verify it worked, but that's it. ... show more
Reviewed in the United States on September 8, 2024 by Digital Goddess

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