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Finding the best LG window air conditioners with heating requires looking at hard data. We compared 2 models using only the specifications published on their listings. The top pick is the LG 18,000 BTU Window Air Conditioner with Heat. It leads because its 18,000 BTU capacity handles medium rooms effectively while maintaining a manageable 126-pound weight. This guide helps you decide which unit fits your space and power needs. We focus on practical specs like voltage, dimensions, and control methods to ensure you choose the right heater for your home.
Match Voltage to Your Outlet
All listed LG window units with heating require 230V power. Check your outlet before buying. The top pick fits medium rooms and includes a remote. The second option adds Wi-Fi control for larger spaces. Both models weigh over 126 pounds. Verify your electrical setup matches the 230V requirement to ensure proper installation and operation.
| # | Product | Best for | Price |
|---|---|---|---|
| 1 | LG 18,000 BTU Window Air Conditioner with Heat Best overall | medium rooms with 230V power | |
| 2 | LG 18,000 BTU Window AC with Heat Best wi-fi | large rooms needing smart heating and cooling |
The best fit for you
- You need heating for a medium bedroom with 230V power – LG 18,000 BTU Window Air Conditioner with Heat – This 18,000 BTU unit fits medium rooms and includes a 230V voltage requirement for reliable operation.
- You want smart voice control for heating in large spaces – LG 18,000 BTU Window AC with Heat – It offers Wi-Fi app control and Alexa compatibility for managing heating in large rooms.
- You prefer a lighter unit for easier window installation – LG 18,000 BTU Window Air Conditioner with Heat – It weighs 126 pounds, making it lighter than the alternative 132-pound model.
LG 18,000 BTU Window Air Conditioner with Heat
Best for: medium rooms with 230V power
- Operating Modes
- Heating
- Cooling Capacity
- 18,000 BTU
- Coverage Area
- up to 1,000 sq ft
- Control Method
- Remote, digital control panel
- Voltage
- 230/208V
- Fan Speeds
- 2
This LG window unit provides 18,000 BTU of cooling and supplemental heating for rooms up to 1,000 square feet. It operates on 230/208V power and includes a remote control for easy adjustment. The unit features two fan speeds for cooling, heating, and fan-only modes. You get a digital control panel, 24-hour timer, and auto restart. It weighs 126 pounds and measures 30.5 inches wide.
- 18,000 BTU capacity for medium rooms
- Supplemental heating mode for cooler days
- Includes remote control and digital panel
- 24-hour timer and auto restart function
- Covers areas up to 1,000 square feet
- Requires a special 230/208V LCDI plug
- Heavier build at 126 pounds
- Limited to two fan speeds
- You need supplemental heat in a medium room
- You have a 230V electrical outlet available
- You want remote control convenience
- You only have standard 110V outlets
- You need cooling for large open spaces
- You prefer a lighter, portable unit
Verdict: LG 18,000 BTU Window AC with Heat delivers reliable cooling and heating for medium-sized rooms. It fits buyers who have the correct 230V power source and want a fixed window unit with remote control.
LG 18,000 BTU Window AC with Heat
Best for: large rooms needing smart heating and cooling
- Operating Modes
- Heating
- Cooling Capacity
- 18,000 BTU
- Coverage Area
- 1,000 sq ft
- Control Method
- App, Remote, Voice, Electronic
- Voltage
- 230V
- Fan Speeds
- 2
This LG unit delivers 18,000 BTU of cooling and heating for rooms up to 1,000 square feet. It runs on 230V power and includes Wi-Fi control via the ThinQ app and voice commands for Alexa. You get two fan speeds and a 24-hour timer. The unit measures 25.5 inches wide and weighs 132 pounds. It is designed for medium to large spaces like living rooms.
- 18,000 BTU capacity for rooms up to 1,000 square feet
- Wi-Fi and voice control compatible with Alexa
- 230V voltage rating for standard high-power outlets
- Includes remote control and electronic panel
- Auto restart function restores settings after power loss
- 132 pounds weight makes installation physically demanding
- Only two fan speeds limit airflow customization
- 25.5-inch width requires a standard window opening
- You need heating and cooling for a 1,000 square foot room
- You want to control the unit via smartphone or voice
- You have a 230V outlet available near the window
- You require more than two fan speed options
- Your window opening is narrower than 25.5 inches
- You cannot handle a 132-pound unit alone
Verdict: LG 18k BTU Window AC with Heat offers robust 18,000 BTU performance with smart controls for large rooms. It fits buyers who prioritize Wi-Fi management and heating capability in a 230V setup.
Specifications side by side
| Spec | LG 18,000 BTU Window Air Conditioner with Heat | LG 18,000 BTU Window AC with Heat |
|---|---|---|
| Cooling Capacity | 18,000 BTU | 18,000 BTU |
| Coverage Area | up to 1,000 sq ft | 1,000 sq ft |
| Control Method | Remote, digital control panel | App, Remote, Voice, Electronic |
| Voltage | 230/208V | 230V |
| Operating Modes | Cooling, heating, fan | – |
| Fan Speeds | 2 | 2 |
| Room | Bedrooms | – |
| Features | Timer, 24-Hour Timer, Remote | Remote |
| Room Type | Bedroom, Living Room, Apartment, Basement | – |
| Color | Bright White | Bright White |
| Size | 18,000 BTU | 18,000 BTU |
| Operating Mode | Heater | Heater |
| Smart Compatibility | – | Alexa |
| Dimensions | 30.5 × 25.5 × 16.8 inches | 30.5 × 25.5 × 16.8 inches |
| Weight | 126 pounds | 132 pounds |
| Model | LW1823HR | LW1823HRSM |
How to choose the right LG heater
Match BTU to Room Size
Heating capacity matters more than cooling. Both models here provide 18,000 BTUs of heat. This output suits medium to large spaces. If your room is small, this power may cycle too often. Check your square footage against standard BTU charts. The top pick handles medium bedrooms well. The second unit serves larger living areas. Do not guess the size. Larger rooms need this specific output to stay warm in winter.
Check Voltage Requirements
Both listed LG units require 230V power. This is not standard 110V household wiring. You must have the correct outlet installed. Using the wrong voltage damages the unit. Verify your window setup has a 230V socket. The top pick needs this specific power source. The second model also requires 230V. Do not assume your current outlet works. Installation often needs an electrician. Safety depends on matching the spec to your home wiring.
Select Control Method
Decide how you want to adjust settings. The top pick uses a physical remote. This is simple and reliable. You point it at the unit to change heat levels. The second option adds Wi-Fi control. You can manage it via an app. This allows remote adjustments from anywhere. If you prefer simplicity, choose the remote-only model. If you want smartphone access, pick the Wi-Fi version. Both include remotes for direct control.
Consider Smart Compatibility
Smart features add convenience for some users. The second LG model supports voice control. It works with Alexa for hands-free operation. You can turn on heating without getting up. The top pick lacks this specific integration. It relies on standard remote inputs. If you use smart home routines, the Wi-Fi model fits better. If you do not use voice assistants, the basic remote is sufficient. Check your existing smart devices before buying.
Verify Physical Dimensions
Window units are heavy and large. The top pick weighs 126 pounds. The second model weighs 132 pounds. Both are 25.5 inches wide and 30.5 inches long. Ensure your window frame can support this weight. Measure your opening carefully before ordering. The height is 16.8 inches for both. A standard window might not fit. Check the installation kit compatibility. Heavy units need secure mounting. Proper fit prevents air leaks and safety hazards.
Frequently asked questions
Can LG window air conditioners heat a room effectively?
Yes, these units provide dedicated heating modes. The listed models feature a specific heater operating mode alongside cooling functions. This allows you to switch between temperature settings as needed. The 18,000 BTU output delivers consistent warmth for medium to large spaces without relying on auxiliary electric strips.
What power outlet do I need for these LG units?
You must have a 230V electrical outlet. Both models in this guide require 230V power to operate correctly. Standard 115V household outlets will not work. Ensure your window installation area has the correct voltage supply before purchasing to avoid compatibility issues or performance failures.
How large of a room can an 18,000 BTU unit heat?
An 18,000 BTU unit is designed for medium to large rooms. The top pick suits medium-sized bedrooms and living areas. The second model targets larger spaces needing robust heating. Proper sizing ensures the unit runs efficiently without short cycling, which can reduce comfort and increase energy use.
Do these LG window ACs come with a remote?
Yes, both models include a remote control. You can adjust temperature and mode settings without leaving your seat. The smart model also adds Wi-Fi app control and voice compatibility with Alexa. This allows you to manage heating from anywhere in your home using your phone.
What are the dimensions of these LG window units?
Both units share similar dimensions of 25.5 inches wide, 16.8 inches high, and 30.5 inches long. The standard model weighs 126 pounds, while the smart version weighs 132 pounds. Verify your window opening size accommodates these measurements. The bright white finish blends with most interior decor styles.
Can I control these units with voice assistants?
Only the smart model supports voice control. It is compatible with Alexa, allowing you to adjust heating settings using voice commands. The standard model relies on the included remote control and timer features. If voice integration is essential, choose the Wi-Fi-enabled option for full smart home connectivity.
Do these units have timer functions for heating?
Yes, the standard model includes a 24-hour timer. You can schedule when the heater turns on or off to maintain comfort. This feature helps manage energy usage by running the unit only when needed. The smart model offers additional scheduling through its dedicated app for precise control.