LG - 1,000 Sq. Ft. 18,000 BTU 230V Smart Window Air Conditioner - White
Customers are saying
Customers consistently note the excellent cooling performance of the 1,000 Sq. Ft. 18,000 BTU 230V Smart Window Air Conditioner, with many praising its ability to effectively cool a space. However, a significant drawback mentioned by several customers is the unit's 230V voltage requirement, which is not compatible with standard wall outlets in many regions. This incompatibility was a source of frustration for some buyers. Clearer communication of the voltage specifications is suggested.
Total Remote Control
Utilize LG ThinQ Technology to command your LG LW1821ERSM window air conditioner from anywhere, managing cooling, modes, and temperature adjustments even on the go with seamless compatibility with Amazon Alexa and Hey Google, for unmatched convenience.
Whisper-Quiet Operation
Enjoy peaceful and undisturbed surroundings as the LG LW1821ERSM window air conditioner operates at remarkably low sound levels as quiet as 52dB in low mode, making it perfect for creating serene sleep and work environments.
Customized Airflow
With 3 cooling and fan speeds combined with the Auto Cool feature, fine-tune the airflow of your LW1821ERSM to fit your specific requirements, ensuring personalized comfort at all times.
Energy-Saving Schedule
Craft a tailored cooling schedule to cut down on energy expenses using the 24-hour on/off timer feature, offering proactive energy conservation without compromising on comfort.
Roomy Cooling Coverage
The LG LW1821ERSM is designed to effortlessly cool large rooms up to 1,000 sq ft (25' x 40'), making it the ideal choice for bedrooms, offices, or any spacious area seeking consistent cooling performance.
Voltage Requirement
This unit requires a special 230V electrical outlet and will not operate with a standard 115V outlet
- Recommended Room Size1000 square feetBTU Cooling Rating18000 british thermal unitsNumber of Cool Settings3Number of Fan Speeds3Airflow Rate530 cubic feet per minuteRemote ControlYes
Reviews
Rating 2.9 out of 5 stars with 17 reviews
- Cooling Performance (7)
Customer Images
The vast majority of our reviews come from verified purchases. Reviews from customers may include My Best Buy members, employees, and Tech Insider Network members (as tagged). Select reviewers may receive discounted products, promotional considerations or entries into drawings for honest, helpful reviews.
Compare similar products

Take control of your indoor climate with the LG LW1821ERSM Window Air Conditioner! Experience optimal cooling for large rooms up to 1,000 sq ft with 3 cooling and fan speeds, a 24-hour timer, and 4-way air deflection for complete customization. The unit's revolutionary LG ThinQ technology lets you cool your home remotely via your smartphone, Amazon Alexa, or Hey Google. This ultra-quiet, high-efficiency unit provides top-notch performance while consuming minimum power. Additional features include an automatic restart function after power outages, a remote control, an easy installation kit, a slide-out washable filter, and a check filter alert, ensuring effortless maintenance and a seamless cooling experience. (Please note: Requires a special 230V electrical outlet)

When it comes to cutting-edge cooling technology, nothing beats the LG Dual Inverter window air conditioners. This remarkable window cooling unit operates at an ultra-quiet 44 dB in sleep mode, rivaling the silence of a library. With DUAL Inverter technology, it operates efficiently, potentially reducing energy costs by up to 35%. Take control of your home's cooling from anywhere using LG ThinQ technology, whether you prefer using your phone or controlling it with Amazon Alexa and Hey Google through voice commands. This window unit offers 4 cooling and fan speeds, a dry mode for dehumidifying, and a 24-hour timer for creating personalized cooling schedules. 4-way air deflection ensures the airflow goes exactly where it's needed, whether you're cooling, dehumidifying, or simply circulating the air. The auto restart feature turns the unit back on automatically after a power outage. Other features include an LCD remote control, an easy window installation kit, a removable and washable filter, and a check filter alert. With a window size range of 27”-39” W x 16” H, this AC unit is a perfect fit for many homes. Upgrade to the LG Dual Inverter window air conditioner and experience the epitome of cooling innovation.

Cool with confidence using the LG Dual Inverter air conditioner, a true innovation in cooling technology. With its ultra-quiet operation at 44 dB in sleep mode and built-in Dual Inverter technology, it's almost as quiet as a library while saving as much as 25% on energy costs. Control your air conditioner from anywhere with LG ThinQ technology on your phone or use Amazon Alexa and Hey Google to manage cooling with your voice. Customize airflow with four cooling and fan speeds and a 24-hour timer, while 4-way air deflection directs air where needed, be it for cooling, dehumidifying, or circulating air. The auto-restart feature guarantees effortless operation after power outages, while the LCD remote control, easy window installation kit, removable, washable filter, and check filter alert make cooling a breeze. Upgrade to the LG Dual Inverter and experience true cooling innovation. (Please note: Requires a special 230V electrical outlet)

GE Appliances is dedicated to providing the right solutions for rooms of any size. Our window air conditioners are designed to offer exceptional comfort while remaining quiet, and our latest connected technology makes these products versatile and easy to use. This 14,000 BTU smart window air conditioner cools large rooms up to 700 square feet. Energy efficient cooling with 3 cooling and 3 fan speeds provides flexible and optimal home comfort. Integration with the SmartHQ app allows you to monitor, schedule, and control your connected air conditioner from anywhere, or use the electronic controls with included remote to easily adjust and manage your settings. This AC installs easily in a double hung window with included window kit and fixed chassis. Additional features like eco mode, power interruption restart, 24-hour on/off timer, and removable filter offer ease of use and maintenance.
| Pros for LG - 1,000 Sq. Ft. 18,000 BTU 230V Smart Window Air Conditioner - White | |||
|---|---|---|---|
| Cooling Performance | Cooling Performance, Noise Level, Installation, Quiet | Cooling Performance, Noise Level, Installation Ease | Cooling Performance, Noise Level, Ease of use, Size, BTU |
| Cons for LG - 1,000 Sq. Ft. 18,000 BTU 230V Smart Window Air Conditioner - White | |||
| There were no cons for this product— | Build Quality | There were no cons for this product— | There were no cons for this product— |



































































