LG LW1823HRSM 18,000 BTU 230V Smart Wi-Fi Enabled Window Air Conditioner with Cooling and Heating

The LG LW1823HRSM is a powerful 18,000 BTU window air conditioner designed to provide both cooling and heating for spaces up to 1,000 square feet. This unit operates on 230V and features smart Wi-Fi connectivity, allowing you to control the temperature from your smartphone or tablet using the LG ThinQ app. With multiple cooling and heating modes, as well as a programmable timer, you can customize your comfort to suit your needs. The unit also includes an energy saver mode and a quiet operation feature, ensuring efficient performance without disturbing your peace. Its sleek design and easy installation make it a perfect addition to any home or office. Enjoy year-round comfort with the LG LW1823HRSM.

• Made To Perfection
• Maximum Usability
• Quiet Operation
• Control Your Cool From Anywhere
• Cooling & Heating

Smart / Connectivity
Has Wi-Fi, works via LG ThinQ app, also voice-control compatible (Google Assistant, Amazon Alexa) so you can turn it on/off, change modes, set temperature remotely.

Modes
4-in-1 operation — Cool, Heat, Dry (dehumidify), Fan modes.

Fan Speeds
Two fan speeds for cooling, two for fan-only mode.

Air Direction
4-way air deflection/spread to help distribute air evenly.

Energy Saving
Energy Saver function to reduce power usage when temperature is reached.

Why should you buy LG LW1823HRSM ?

• All-Season Use
  Provides both cooling (18,000 BTU) and heating (12,000 BTU), making it useful year-round.
  
  
• Large Coverage
  Can handle spaces up to about 1,000 sq ft, suitable for big rooms or open areas.
  
  
• Smart Control
  Built-in Wi-Fi with LG ThinQ app, plus voice assistant support (Alexa/Google).
  
  
• Multiple Modes
  Cool, Heat, Fan, and Dry modes give flexibility for different weather and humidity levels.
  
  
• Energy Saver Mode
  Helps reduce electricity usage when full power isn’t needed.
  
  
• Even Cooling/Heating
  4-way air deflection distributes airflow evenly across the room.
  
  
• Auto-Restart
  Automatically restores your previous settings after a power outage.
  
  
• Convenient Timer
  24-hour programmable on/off scheduling.
  
  
• Easy Maintenance
  Washable slide-out filter with filter reminder keeps it efficient and clean.
  
  
• Dehumidification
  Removes excess moisture from the air, useful in humid conditions.
  
  
• Remote Control Included
  Lets you adjust settings from across the room.

Frequently Asked Questions by Customers

• Which cooling and heating capacities it provides, and how large a room it can handle?
  It delivers 18,000 BTU cooling and 12,000 BTU heating power, enough to cover about 1,000 square feet.
  
  
• What electrical requirements it has in cooling versus heating mode?
  When cooling it draws about 7.8 amps at 1,620-1,640 watts; in heating mode the draw is around 15 to 16 amps using 3,100-3,670 watts.
  
  
• What efficiency rating, airflow and dehumidification performance it offers?
  The CEER is about 11.1, dry airflow (fan-only/dry mode) is about 430 CFM, and it removes roughly 5.4 pints of water per hour in dehumidification mode.
  
  
• What are its physical size, weight, and how it fits in window frames?
  The unit is approximately 25½ inches wide, 30½ inches deep, 16 5⁄6 inches high; net weight is about 132 lbs, shipping weight about 146 lbs.
  
  
• What modes and control features it supports?
  It can cool, heat, dehumidify, run fan-only; it has 2 fan speeds for cooling, 2 for fan-only, a 24-hour on/off timer, auto-restart after power loss, filter alarm reminder, energy saver mode, 4-way air deflection, remote control, WiFi connectivity via ThinQ, voice control support with Google Assistant and Alexa.
  
  
• What warranty comes with it?
  A one-year parts and labor warranty.

Pros

• Offers both cooling and heating, so it works year-round—not just hot months. Good for seasonal swings.
• Strong capacity for large rooms or open spaces (~ 1,000 sq ft). It can handle larger load and high heat gains.
• Smart features: Wi-Fi control (ThinQ), remote, timer, auto restart make usage more flexible and convenient.
• Useful modes (fan, dry, etc.) and features like energy saver help moderate power usage.
• Solid dehumidification and airflow performance helps in humid climates.
• Decent low/mid noise compared to many units of similar capacity.

Cons

• High power draw in heating mode (≈ 15-16 A, ~3,100-3,670 W), meaning higher electricity cost when heating.
• Noise at high setting (~ 61 dB) is loud — may be noticeable in quiet rooms or at night.
• Large size & heavy weight make installation harder; needs a suitable window size, strong mounting and possibly special framing or support.
• Efficiency (CEER ~ 11.1) is moderate; there are more efficient inverter-type units out there that may yield lower running costs.
• When used mostly for cooling (if heating is rarely needed), the heating capability may be under-utilized but still adds cost/weight/complexity.
• As with many large AC/heater combo units, performance in heating mode may drop in very cold conditions. It’s more of a supplemental heater rather than a primary heat source for harsh winters.

Conclusion

This LG model is a strong all-rounder for someone who needs both good cooling and occasional heating, especially in a large room, provided the electrical supply is appropriate (208-230V) and installation is feasible.