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LG

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 36 reviews
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Availability: Only 2 left in stock, order soon!
Fulfilled by True Mart LLC

Arrives Aug 31 – Sep 2
Order within 23 hours and 21 minutes
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Color: White


Size: 1 Count (Pack of 1)


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, 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.


  • Window air conditioner for apartment
Color: White Size: 1 Count (Pack of 1) Style: Wifi 230V
This air conditioner works great. It cools and heats our studio apartment. The remote control is easy to use.
Reviewed in the United States on September 15, 2023 by Amazon Customer

  • Lasted 3 Months DO NOT BUY
Color: White Size: 1 Count (Pack of 1) Style: Wifi 230V
worked great for 3 months then starts freezing every time it it turned on, customer service says ill be contacted to make an apt. to get it looked at in 5 days, as hot as it is having my ac down that long after just paying $800 for it seems a little out there to me. LG customer service is a compete hassle to go through. If you’re looking for an air conditioner that just works, look elsewhere. UPDATE: still no ac or any kind of help from LG a week and a half later. Update: one month later. Still no help from customer service and no ac. ... show more
Reviewed in the United States on June 11, 2025 by Elizabeth Cline

  • Good
Color: White Size: 1 Count (Pack of 1) Style: Wifi 230V
Good
Reviewed in the United States on January 28, 2024 by Ricardo colin

  • Very loud and Noisy
Color: White Size: 1 Count (Pack of 1) Style: Wifi 230V
I am extremely disappointed in this LG air conditioner. It is extremely loud and noisy. It only has 2 fan speeds. this is a disgrace for an 18,000 BTU air conditioner. I bought this because I live in an apartment that has no thermostat to control the heat level. I have 3 tower heaters used in both bedrooms and my living room. This unit also is a 12,000 heater. I thought that this would be good for my living room, dining room, kitchen and hall way. I ordered this to replace my 16,000 Frigidaire which died. it Lasted 12 years. My air conditioner is installed in a through the wall sleeve. Because of this and the weight of the unit I'm stuck with it. It is too heavy and box to return. other wise I would. Don't make my mistake. LG makes great TV's, but not great air conditioners. Buy another brand that has made air conditioners for years. ... show more
Reviewed in the United States on August 30, 2023 by baba181021

  • If you think heat working good so no it’s not giving you heat
Color: White Size: 1 Count (Pack of 1) Style: Wifi 230V
When I buy this air conditioner which one heat and cool both features I really so happy but I was wrong when i installed and try to use in cold weather I really sad because in winter it’s not giving me a heat which one I expected it’s throw a cold air . So my suggestion is don’t waste your money if you think the both features you got in one . ... show more
Reviewed in the United States on January 22, 2025 by Alley

  • Didn’t work / cool at all
Color: White Size: 1 Count (Pack of 1) Style: Wifi 230V
Spent way too much for it not to cool the 700 sq ft area we purchased it for - and it is supposedly meant for 1000! Not a chance it would it’s just totally defective
Reviewed in the United States on July 11, 2022 by Misty

  • Does not last summer Does not last summer
Color: White Size: 1 Count (Pack of 1) Style: Wifi 230V
Bought last year. It worked really well for 2 months. On the 3rd month had to keep unplugging it because it wouldnt turn off even when the power was turned off. If it was not unplugged it would just keep running and freeze over. You could hear icesickles inside. Overpriced junk that did not last. Decided to plug back in today to dee what happed and same junk. ... show more
Reviewed in the United States on April 29, 2024 Reviewed in the United States on April 29, 2024 by Amazon Customer

  • out ran the warranty
Color: White Size: 1 Count (Pack of 1) Style: Wifi 230V
Bought this unit on 6-21 on 4-23 unit went dead not repairable Didn't last 2 years Warranty is 1 year
Reviewed in the United States on July 11, 2023 by John

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