Due to demand, a shipping date cannot be provided at checkout. After you've placed your order, we will send you shipping updates as soon as they are available. Quantities are currently limited to only ONE per customer.
PLEASE NOTE: This product will not ship until January 2023. Quantities are currently limited to ONE per customer. Due to high demand, an exact manufacturer shipping date cannot be specified at this time. After your order is placed, you will receive shipping updates as they become available. Thank you for your patience and understanding.

LG - 1,000 Sq. Ft. 18,000 BTU Smart Window Air Conditioner with 12,000 BTU Heater - White

In Stock
Window Air Conditioner
Air Conditioner
30.5 in
16.84 in
25.5 in
126.5 lbs
per week *
Cash Price3




The LW1821HRSM 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 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.
  • User friendly
    digital control panel and remote control
  • Supplemental Heat
    For cooler days use the supplemental heat option to add warmth to your space
  • Multiple Fan Speeds
    2 cooling, heating and fan speeds allow you to customize your cooling or heating
  • Auto Restart
    After a power failure, Auto Restart will automatically turn the unit back on when power is restored
  • Cools Rooms up to 1000 Square Feet
    LW1821HRSM is ideal for cooling medium rooms (25' X 40')
Manufacturer's Warranty - Parts:1 Year Limited
Cord Length:4.4 inches
ENERGY STAR Certified:No
Number of Fan Speeds:2
Recommended Room Size:1000 square feet
Moisture Removal Capacity:5.5 pints per day
Maximum Window Opening Height:0 inches
Minimum Window Opening Height:18 inches
BTU Heat Rating:12000 british thermal units
BTU Cooling Rating:18000 british thermal units
Remote Control:Yes
Manufacturer's Warranty - Labor:1 Year Limited
Number of Cool Settings:2
App Compatible:Yes
Works With:Amazon Alexa; Google Assistant
Product Weight:126.5 pounds
Color Category:White
Amperage:20 amperes
Combined Energy Efficiency Ratio (CEER):0
Minimum Noise Level:57 decibels adjusted
Control Type:Button
Window Mounting Kit Included:Yes
Product Name:1,000 Sq. Ft. 18,000 BTU Smart Window Air Conditioner with 12,000 BTU Heater
Display Type:LED
Air Conditioner Type:Window
Airflow Rate:430 cubic feet per minute
Minimum Window Opening Width:29 inches
Integrated Heater:Yes
Maximum Window Opening Width:41 inches
Sleep Mode:No
Product Depth:30.50 inches
Product Width:25.50 inches
Model Number:LW1821HRSM
Auto Shut-Off:No
Estimated Annual Electricity Use:11.1 kilowatt hours
Product Height:16.84 inches
Maximum Noise Level:61 decibels adjusted
Energy Efficiency Ratio:11.2
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