Bring smarter fabric care and bigger-load convenience home with the LG WM3420CW front-load washer, designed to make laundry day faster, gentler on clothes, and easier to manage from anywhere. Built around an ultra-roomy Canadian-rated 5.2 cu. ft. capacity, this washer is ideal for busy households that want to wash more in fewer loads—think bulky towels, bedding, and family-sized weekly piles—without sacrificing performance. With a standard 27-inch width, it fits comfortably in many laundry rooms while still delivering the kind of capacity you usually only see in larger setups.

What truly sets the LG WM3420CW apart is the intelligence built into the wash process. AI DD® 2.0 technology helps the washer sense fabric characteristics and load conditions, then automatically adjusts wash motions and settings to improve cleaning while helping protect fabrics from unnecessary wear. For shoppers comparing similar front-load models, this kind of adaptive, sensor-driven wash optimization is a standout feature that can take the guesswork out of cycle selection and help deliver more consistent results across mixed loads. You also get ColdWash™ technology, which is designed to deliver a warm-water-like clean while using cold water—an advantage for energy-conscious homes and anyone trying to reduce hot-water use without compromising everyday cleaning power.

Convenience is another strong point. Built-in Wi‑Fi connectivity works with the ThinQ® app, letting you start or monitor cycles remotely, receive alerts, and keep tabs on your washer’s status—perfect for multitasking households. The washer is also designed with a smooth, modern control experience and practical features that support long-term ownership, including a durable stainless steel drum and a direct drive motor engineered for reliable, low-vibration operation. If you want a front-load washer that combines extra-large Canadian capacity with intelligent wash care, cold-water cleaning performance, and connected control, the LG WM3420CW is a confident upgrade for modern laundry routines.

 AI DD® 2.0 (Artificial Intelligence Direct Drive) – detects fabric characteristics and helps optimize wash motions for improved fabric care and cleaning performance.

 LG ThinQ® Smart Technology (Wi‑Fi) – enables remote start, cycle monitoring, notifications, and access to additional features through the ThinQ app.

 Smart Diagnosis™ – helps troubleshoot issues and supports faster service by providing diagnostic information.

 ColdWash® Technology – delivers enhanced cleaning performance using cold water to help save energy compared with warm-water washing.

 6Motion® DD Technology – uses multiple drum motion patterns to tailor washing action for different fabric types and soil levels.

 Inverter DirectDrive® Motor – direct-drive design helps improve efficiency, reduce noise, and enhance long-term reliability.

 NeveRust® Stainless Steel Drum – stainless-steel drum helps resist rust and is designed for durability and gentle fabric care.

 TrueBalance™ Anti‑Vibration System – helps reduce vibration and noise for steadier operation, especially during high-speed spins.

 ENERGY STAR® Certified – meets energy-efficiency standards to help reduce electricity and water usage.

 ENERGY STAR® Most Efficient – recognized for top-tier efficiency within the ENERGY STAR program (where applicable by listing/year).

 Ultra Large Capacity (5.2 cu. ft. – Canada) – fits larger loads to reduce the number of wash cycles needed and save time.

 Front‑Load Washer design – tumbling wash action helps deliver strong cleaning with typically lower water use than many top-load designs.

 AI Wash cycle – uses sensor-based detection (such as load characteristics/soil level) to help automate key wash settings for convenience.

 Smart Pairing – when paired with a compatible LG dryer in the ThinQ app, the washer can recommend/send a matching dry cycle selection.

 Downloadable Cycles – lets you add specialty cycles through the ThinQ app to better match specific laundry needs.

 Remote Start – start a wash cycle from your phone (when enabled/connected) for added scheduling flexibility.

 Remote Cycle Monitor – check remaining time and cycle status remotely to better plan around laundry.

 Proactive Customer Care – can provide helpful maintenance/usage insights and alerts through the smart platform (availability may vary).

 Energy Monitoring – helps track energy usage through the app to support efficiency goals and awareness.

 Tub Clean Coach – provides reminders/guidance to help keep the washer drum fresh and maintain performance.

 Tub Clean cycle – dedicated cleaning cycle designed to help reduce residue buildup and odors inside the washer.

 Control Lock / Child Lock function – disables controls during operation to help prevent accidental changes by children.

 Delay Wash (1–19 hours) – schedules the start time to run laundry when it’s most convenient (or during off-peak hours).

 Extra Rinse option – adds rinsing to help reduce detergent residue, helpful for sensitive skin or heavily soiled loads.

 Pre‑Wash option – adds an initial wash stage to help loosen heavy soil before the main wash.

 Spin Speed selection (multiple levels) – lets you choose higher spins for faster drying times or gentler spins for delicate fabrics.

 Spin Only cycle – removes excess water without washing, useful after hand-washing or when loads need additional spinning.

 Soil Level selection (multiple levels) – adjusts wash intensity/time based on how dirty the load is.

 Temperature selection (Tap Cold to Hot range) – supports fabric care and stain removal by matching water temperature to the load.

 LoadSense™ / Load size sensing – helps adjust water levels and wash action based on the detected load for efficiency and performance.

 Foam detection system – helps detect excess suds and adjust operation to improve rinsing and protect performance.

 Vibration Sensor – helps detect imbalance/vibration conditions and supports smoother spinning.

 Auto Restart – resumes the cycle after a power interruption (when conditions allow) to reduce rework.

 End‑of‑Cycle Signal – alerts you when the load is finished to help reduce wrinkles from sitting.

 Door Lock indication – shows when the door is locked for safety during operation.

 Clear round door window – allows quick visual checks of the wash without opening the door.

 Dial‑A‑Cycle™ + electronic controls with LED indicators – simplifies cycle selection and provides clear status feedback.

 ADA Compliant design – designed to meet ADA guidelines for accessibility (installation context may affect compliance).

 Leveling legs – helps stabilize the washer on uneven floors to reduce vibration and noise.

 Embossed inner drum surface – drum pattern helps improve wash action while supporting gentle fabric handling.

 Magnetic door holder (venting position) – helps keep the door slightly ajar between loads to improve airflow and reduce odors.

 Common wash programs for everyday needs – includes practical cycles such as Normal, Heavy Duty, Bedding, Delicates, Perm. Press, Quick Wash, and Tub Clean to match typical household laundry.

 Stackable installation capability – can be stacked with a compatible LG dryer (stacking kit typically required) to save floor space.

 Pedestal compatibility – supports an optional pedestal for easier loading/unloading and added storage (where available).

 LG SideKick™ pedestal washer compatibility – can pair with an optional mini washer pedestal for small loads and specialty items (where available).

 Standard 27-inch width footprint – fits many common laundry-room cutouts while maintaining a large-capacity drum.

 Dimensions (approx. 27" W x 39" H x 30 1/4" D) – helps confirm fit for closets, alcoves, and laundry-room layouts (always verify with your installation space).

 Depth with door open (approx. 55") – important clearance measurement for tight spaces and door swing planning.

 120V household power requirement – designed to run on standard North American electrical service (verify outlet/circuit requirements before install).

 White finish – clean, neutral look that matches many laundry-room styles and common dryer finishes.

 Matching dryer pairing (model-family compatibility) – designed to coordinate with compatible LG dryers for a consistent look and stacked/side-by-side setups.

Specification Value
Model WM3420CW
Appliance Type Front Load Washer
Capacity 5.2 Cu Ft
Width 27 inches
Height 39 inches
Depth 30 1/4 inches
Depth with Door Open 90° 55 inches
Carton Width 29 3/4 inches
Carton Height 41 7/8 inches
Carton Depth 31 1/2 inches
Product Weight 185.2 lbs
Shipping Weight 198.4 lbs
Color White
Door Type Clear Round PC Cover
Drum Material NeveRust Stainless Steel Drum
Drum Lifter Plastic Lifter
Embossing Inner Drum Yes
Stackable Yes
ADA Compliant Yes
Display Type Dial-A-Cycle and Electronic Control Panel with LED Indicator
Control Type Digital and Knobs
Timer Display 88
Delay Timer 1-19 hours
Door Lock Indication Yes
WiFi Yes
ThinQ Yes
Smart Diagnosis Yes
Remote Start and Cycle Monitor Yes
Remote Start Yes
Download Cycle Yes
Energy Monitoring Yes
Proactive Customer Care Yes
Tub Clean Coach Yes
Smart Pairing Yes
Voice Control No
Alexa Compatible Yes
Google Home Compatible Yes
Remote Control Yes
Remote Monitoring Yes
Remote Diagnostics Yes
App Integration ThinQ
AI Technology Yes
AI DD Yes
AI Wash Yes
6 Motion DD Yes
Inverter DirectDrive Yes
TrueBalance Anti-Vibration System Yes
Vibration Sensor Yes
Foam Detection System Yes
LoadSense Yes
Auto Restart Yes
Leveling Legs Yes
ColdWash Yes
Steam No
TurboWash No
TurboWash360 No
ezDispense No
Add Item No
Drum Light No
Fresh Care No
Detergent Level No
Softener Level No
Control Lock Yes
Extra Rinse Yes
Pre-wash Yes
Rinse + Spin Option Yes
Spin Only Yes
Signal Yes
Soil Levels 3 Levels
Spin Speed Levels 5 Levels
Maximum Spin Speed 1,260 RPM
Temperature Settings Tap Cold / Cold / Semi Warm / Warm / Hot
Water Level Auto
Wash Cycles 10
Wash Options 8
Normal Cycle Yes
Heavy Duty Cycle Yes
Bedding Cycle Yes
Delicates Cycle Yes
Perm. Press Cycle Yes
Quick Wash Cycle Yes
Quick Wash (Speed Wash) Yes
Cold Wash Cycle Yes
Downloaded Cycle Yes
Tub Clean Cycle Yes
Spin Only Cycle Yes
Allergiene Cycle No
Sanitary Cycle No
Steam Refresh Cycle No
Bright Whites Cycle No
Whites Cycle No
Bulky/Large Cycle No
Baby Wear Cycle No
Hand Wash/Wool Cycle No
Jumbo Wash Cycle No
Overnight Care Cycle No
Quick Wash+Dry Cycle No
Refresh Cycle No
Rinse+Spin Program No
Small Load Cycle No
Sportswear (Activewear) Cycle No
Towels Cycle No
Wash+Dry Cycle No
Bleach Dispenser Yes
Fabric Softener Dispenser Yes
Interior Light No
Includes Hoses No
Water Heater No
Usage Residential
ENERGY STAR Qualified Yes
ENERGY STAR Most Efficient Yes
IMEF 3.1
IWF 2.9
Electrical Requirements 120 V, 60 Hz, 6 A
Matching Electric Dryer DLE3420W
Matching Pedestal WDP6W
Matching SideKick Pedestal Washer WD300CW
Matching Heat Pump Dryer N/A
Bar Code 048231349895
Warranty 1 year

Warranty Support

Warranty support and documents in one place.

Find the manufacturer support line and open your brochure or warranty PDFs below in the floating preview window.

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Bring smarter fabric care and bigger-load convenience home with the LG WM3420CW front-load washer, designed to make laundry day faster, gentler on clothes, and easier to manage from anywhere. Built around an ultra-roomy Canadian-rated 5.2 cu. ft. capacity, this washer is ideal for busy households that want to wash more in fewer loads—think bulky towels, bedding, and family-sized weekly piles—without sacrificing performance. With a standard 27-inch width, it fits comfortably in many laundry rooms while still delivering the kind of capacity you usually only see in larger setups.

What truly sets the LG WM3420CW apart is the intelligence built into the wash process. AI DD® 2.0 technology helps the washer sense fabric characteristics and load conditions, then automatically adjusts wash motions and settings to improve cleaning while helping protect fabrics from unnecessary wear. For shoppers comparing similar front-load models, this kind of adaptive, sensor-driven wash optimization is a standout feature that can take the guesswork out of cycle selection and help deliver more consistent results across mixed loads. You also get ColdWash™ technology, which is designed to deliver a warm-water-like clean while using cold water—an advantage for energy-conscious homes and anyone trying to reduce hot-water use without compromising everyday cleaning power.

Convenience is another strong point. Built-in Wi‑Fi connectivity works with the ThinQ® app, letting you start or monitor cycles remotely, receive alerts, and keep tabs on your washer’s status—perfect for multitasking households. The washer is also designed with a smooth, modern control experience and practical features that support long-term ownership, including a durable stainless steel drum and a direct drive motor engineered for reliable, low-vibration operation. If you want a front-load washer that combines extra-large Canadian capacity with intelligent wash care, cold-water cleaning performance, and connected control, the LG WM3420CW is a confident upgrade for modern laundry routines.

 AI DD® 2.0 (Artificial Intelligence Direct Drive) – detects fabric characteristics and helps optimize wash motions for improved fabric care and cleaning performance.

 LG ThinQ® Smart Technology (Wi‑Fi) – enables remote start, cycle monitoring, notifications, and access to additional features through the ThinQ app.

 Smart Diagnosis™ – helps troubleshoot issues and supports faster service by providing diagnostic information.

 ColdWash® Technology – delivers enhanced cleaning performance using cold water to help save energy compared with warm-water washing.

 6Motion® DD Technology – uses multiple drum motion patterns to tailor washing action for different fabric types and soil levels.

 Inverter DirectDrive® Motor – direct-drive design helps improve efficiency, reduce noise, and enhance long-term reliability.

 NeveRust® Stainless Steel Drum – stainless-steel drum helps resist rust and is designed for durability and gentle fabric care.

 TrueBalance™ Anti‑Vibration System – helps reduce vibration and noise for steadier operation, especially during high-speed spins.

 ENERGY STAR® Certified – meets energy-efficiency standards to help reduce electricity and water usage.

 ENERGY STAR® Most Efficient – recognized for top-tier efficiency within the ENERGY STAR program (where applicable by listing/year).

 Ultra Large Capacity (5.2 cu. ft. – Canada) – fits larger loads to reduce the number of wash cycles needed and save time.

 Front‑Load Washer design – tumbling wash action helps deliver strong cleaning with typically lower water use than many top-load designs.

 AI Wash cycle – uses sensor-based detection (such as load characteristics/soil level) to help automate key wash settings for convenience.

 Smart Pairing – when paired with a compatible LG dryer in the ThinQ app, the washer can recommend/send a matching dry cycle selection.

 Downloadable Cycles – lets you add specialty cycles through the ThinQ app to better match specific laundry needs.

 Remote Start – start a wash cycle from your phone (when enabled/connected) for added scheduling flexibility.

 Remote Cycle Monitor – check remaining time and cycle status remotely to better plan around laundry.

 Proactive Customer Care – can provide helpful maintenance/usage insights and alerts through the smart platform (availability may vary).

 Energy Monitoring – helps track energy usage through the app to support efficiency goals and awareness.

 Tub Clean Coach – provides reminders/guidance to help keep the washer drum fresh and maintain performance.

 Tub Clean cycle – dedicated cleaning cycle designed to help reduce residue buildup and odors inside the washer.

 Control Lock / Child Lock function – disables controls during operation to help prevent accidental changes by children.

 Delay Wash (1–19 hours) – schedules the start time to run laundry when it’s most convenient (or during off-peak hours).

 Extra Rinse option – adds rinsing to help reduce detergent residue, helpful for sensitive skin or heavily soiled loads.

 Pre‑Wash option – adds an initial wash stage to help loosen heavy soil before the main wash.

 Spin Speed selection (multiple levels) – lets you choose higher spins for faster drying times or gentler spins for delicate fabrics.

 Spin Only cycle – removes excess water without washing, useful after hand-washing or when loads need additional spinning.

 Soil Level selection (multiple levels) – adjusts wash intensity/time based on how dirty the load is.

 Temperature selection (Tap Cold to Hot range) – supports fabric care and stain removal by matching water temperature to the load.

 LoadSense™ / Load size sensing – helps adjust water levels and wash action based on the detected load for efficiency and performance.

 Foam detection system – helps detect excess suds and adjust operation to improve rinsing and protect performance.

 Vibration Sensor – helps detect imbalance/vibration conditions and supports smoother spinning.

 Auto Restart – resumes the cycle after a power interruption (when conditions allow) to reduce rework.

 End‑of‑Cycle Signal – alerts you when the load is finished to help reduce wrinkles from sitting.

 Door Lock indication – shows when the door is locked for safety during operation.

 Clear round door window – allows quick visual checks of the wash without opening the door.

 Dial‑A‑Cycle™ + electronic controls with LED indicators – simplifies cycle selection and provides clear status feedback.

 ADA Compliant design – designed to meet ADA guidelines for accessibility (installation context may affect compliance).

 Leveling legs – helps stabilize the washer on uneven floors to reduce vibration and noise.

 Embossed inner drum surface – drum pattern helps improve wash action while supporting gentle fabric handling.

 Magnetic door holder (venting position) – helps keep the door slightly ajar between loads to improve airflow and reduce odors.

 Common wash programs for everyday needs – includes practical cycles such as Normal, Heavy Duty, Bedding, Delicates, Perm. Press, Quick Wash, and Tub Clean to match typical household laundry.

 Stackable installation capability – can be stacked with a compatible LG dryer (stacking kit typically required) to save floor space.

 Pedestal compatibility – supports an optional pedestal for easier loading/unloading and added storage (where available).

 LG SideKick™ pedestal washer compatibility – can pair with an optional mini washer pedestal for small loads and specialty items (where available).

 Standard 27-inch width footprint – fits many common laundry-room cutouts while maintaining a large-capacity drum.

 Dimensions (approx. 27" W x 39" H x 30 1/4" D) – helps confirm fit for closets, alcoves, and laundry-room layouts (always verify with your installation space).

 Depth with door open (approx. 55") – important clearance measurement for tight spaces and door swing planning.

 120V household power requirement – designed to run on standard North American electrical service (verify outlet/circuit requirements before install).

 White finish – clean, neutral look that matches many laundry-room styles and common dryer finishes.

 Matching dryer pairing (model-family compatibility) – designed to coordinate with compatible LG dryers for a consistent look and stacked/side-by-side setups.

Specification Value
Model WM3420CW
Appliance Type Front Load Washer
Capacity 5.2 Cu Ft
Width 27 inches
Height 39 inches
Depth 30 1/4 inches
Depth with Door Open 90° 55 inches
Carton Width 29 3/4 inches
Carton Height 41 7/8 inches
Carton Depth 31 1/2 inches
Product Weight 185.2 lbs
Shipping Weight 198.4 lbs
Color White
Door Type Clear Round PC Cover
Drum Material NeveRust Stainless Steel Drum
Drum Lifter Plastic Lifter
Embossing Inner Drum Yes
Stackable Yes
ADA Compliant Yes
Display Type Dial-A-Cycle and Electronic Control Panel with LED Indicator
Control Type Digital and Knobs
Timer Display 88
Delay Timer 1-19 hours
Door Lock Indication Yes
WiFi Yes
ThinQ Yes
Smart Diagnosis Yes
Remote Start and Cycle Monitor Yes
Remote Start Yes
Download Cycle Yes
Energy Monitoring Yes
Proactive Customer Care Yes
Tub Clean Coach Yes
Smart Pairing Yes
Voice Control No
Alexa Compatible Yes
Google Home Compatible Yes
Remote Control Yes
Remote Monitoring Yes
Remote Diagnostics Yes
App Integration ThinQ
AI Technology Yes
AI DD Yes
AI Wash Yes
6 Motion DD Yes
Inverter DirectDrive Yes
TrueBalance Anti-Vibration System Yes
Vibration Sensor Yes
Foam Detection System Yes
LoadSense Yes
Auto Restart Yes
Leveling Legs Yes
ColdWash Yes
Steam No
TurboWash No
TurboWash360 No
ezDispense No
Add Item No
Drum Light No
Fresh Care No
Detergent Level No
Softener Level No
Control Lock Yes
Extra Rinse Yes
Pre-wash Yes
Rinse + Spin Option Yes
Spin Only Yes
Signal Yes
Soil Levels 3 Levels
Spin Speed Levels 5 Levels
Maximum Spin Speed 1,260 RPM
Temperature Settings Tap Cold / Cold / Semi Warm / Warm / Hot
Water Level Auto
Wash Cycles 10
Wash Options 8
Normal Cycle Yes
Heavy Duty Cycle Yes
Bedding Cycle Yes
Delicates Cycle Yes
Perm. Press Cycle Yes
Quick Wash Cycle Yes
Quick Wash (Speed Wash) Yes
Cold Wash Cycle Yes
Downloaded Cycle Yes
Tub Clean Cycle Yes
Spin Only Cycle Yes
Allergiene Cycle No
Sanitary Cycle No
Steam Refresh Cycle No
Bright Whites Cycle No
Whites Cycle No
Bulky/Large Cycle No
Baby Wear Cycle No
Hand Wash/Wool Cycle No
Jumbo Wash Cycle No
Overnight Care Cycle No
Quick Wash+Dry Cycle No
Refresh Cycle No
Rinse+Spin Program No
Small Load Cycle No
Sportswear (Activewear) Cycle No
Towels Cycle No
Wash+Dry Cycle No
Bleach Dispenser Yes
Fabric Softener Dispenser Yes
Interior Light No
Includes Hoses No
Water Heater No
Usage Residential
ENERGY STAR Qualified Yes
ENERGY STAR Most Efficient Yes
IMEF 3.1
IWF 2.9
Electrical Requirements 120 V, 60 Hz, 6 A
Matching Electric Dryer DLE3420W
Matching Pedestal WDP6W
Matching SideKick Pedestal Washer WD300CW
Matching Heat Pump Dryer N/A
Bar Code 048231349895
Warranty 1 year

Warranty Support

Warranty support and documents in one place.

Find the manufacturer support line and open your brochure or warranty PDFs below in the floating preview window.

Files

Brochure and warranty documents

1 file
Reviews will appear here once your reviews app is connected.