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Lg WM3420CW 4.5 Cu. Ft. Ultra Large Capacity Smart Front Load Washer
Lg WM3420CW 4.5 Cu. Ft. Ultra Large Capacity Smart Front Load Washer
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5 year plan
$249.003 year plan
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Lg WM3420CW 4.5 Cu. Ft. Ultra Large Capacity Smart Front Load Washer
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Get A Custom Clean
Based on the cycle you select, LG 6Motion™ technology uses up to 6 different wash motions, each designed to get clothes cleaner and help them last longer. Options range from a scrubbing PowerMotion that helps to dissolve stains to the gentle Swinging motion that's ideal for delicates.
Cleans Like Warm, Saves Like Cold
Saving energy doesn't have to mean compromising on cleaning with the ColdWash™ option. Powered by the LG Direct Drive Motor and 6 motion™ technology, it's ideal for cleaning all types of clothes-even those you normally wash in warm water. Can be used with almost any wash cycle and virtually all fabric types.
Built-in Intelligence Takes Out The Guesswork
Forget about endless sorting or toggling through cycles-built-in sensors use AI technology to detect fabric texture and load size, then automatically select the right wash motions, temperatures and more for advanced fabric care.
Count On Quiet, Efficient Performance
Backed by a 10-year limited warranty, the LG Direct Drive Motor delivers peace of mind with every load. Fewer moving parts means less noise and vibration, greater stability and durable performance you can depend on for years to come.
Go Big To Save Time And Get More Done
Say never again to never-ending piles of laundry-this ultra large capacity washer fits more clothes in every load and helps you power through laundry day in less time. Bring on big loads of towels or jeans -this 4.5 cu. ft. washer fits more in every load up to 20 lbs.
Smooth Surface Helps Prevent Snags
Unlike tubs made from porcelain or plastic, the LG NeveRust® Stainless Steel Tub avoids the chips and nicks that can snag fabrics and ruin clothing.
More Style, Less Space.
LG closet-depth washers and dryers have a shallower depth to fit in more places & add sleek style to any room.
Wash Two Loads At The Same Time
Add the one-of-a-kind LG SideKick™ pedestal washer and wash small loads that just can't wait in the compact washer below while you do a big load up top. Warm and cold settings and 6 cycles let you care for all types of items, from delicates and hand washables to workout wear and baby clothes. Elevate your washer for easier loading and unloading.
A Smarter Home Starts with the ThinQ® app
The ThinQ® app offers control and convenience for smart LG appliances to help you simplify life and enjoy the comforts of home. Manage and monitor your washer remotely, track and download cycles, connect with Google or Alexa voice assistants, and access smart diagnosis, customer support, and more. ThinQ Care appliances send usage, maintenance, and diagnostic alerts to help you keep them running smoothly. ThinQ UP appliances receive software updates for new features and enhancements. Learn More.
Measure First, Order Right.
Nothing is more frustrating than an appliance that doesn't fit. We'll help you find the right one for your space. Watch the Full Movie with Audio Descriptions Watch the Full Movie
- Enjoy a 2-year limited warranty on select appliances purchased through December 31, 2026 via the ThinQ® app. Terms apply.
- 4.5 cu. ft. Ultra Large Capacity lets you clean larger loads
- 6Motion™ technology uses different wash motions for a thorough clean
- With ColdWash™ technology, clean like warm and save like cold
- Built-in intelligence takes out the guesswork-AI technology selects optimal wash settings
- Get the ThinQ® app to access smart functions, ThinQ Care™ alerts and download new ThinQ UP™ features
- Direct Drive Motor 10-Year Limited Warranty
- ENERGY STAR Certified for an efficient clean that saves on water and energy
| Laundry Appliance Capacity | |
| Capacity | 4.5 cu. ft. |
| Summary | |
| Product Color | White (W) |
| Dial-A-Cycle™ | Yes |
| Hard Buttons | No |
| Electric Dryer Option | DLE3420W |
| Gas Dryer Option | DLG3421W |
| Series | LG |
| Touch Buttons | Yes |
| Type | Front Load Washer |
| Energy | |
| CEE Tier | 3 |
| ENERGY STAR® Most Efficient | Yes |
| ENERGY STAR Certified | Yes |
| IMEF | 3.1 |
| IWF | 2.9 |
| Washer Programs | |
| No. of Washer Programs | 10 |
| Washer Programs | Quick Wash, AI Wash, ColdWash™, Bedding, Delicates, Downloaded, Heavy Duty, Normal, Perm. Press, Tub Clean |
| No. of Washer Options | 8 |
| Washer Options | Delay Start, Control Lock, Extra Rinse, Pre-wash, Remote Start, Signal, Spin Only, Wi-Fi |
| No. of Wash/Rinse Temps | 5 |
| Wash/Rinse Temps | Hot, Semi Warm, Warm, Cold, Tap Cold |
| No. of Spin Speeds | 5 |
| Spin Speeds | Extra High, High, Medium, Low, No Spin |
| Water Levels | Load Sensing |
| No. of Soil Levels | 3 |
| Fabric Care Features | |
| Turbowash® | No |
| AI DD® | Yes |
| Soil Level Sensor | No |
| Allergiene™ Cycle | No |
| ColdWash™ Option | Yes |
| Sanitary Cycle | No |
| Steam Technology | No |
| Laundry Appliance Convenience Features | |
| Dispenser | Prewash, Main Wash (with liquid detergent cup), Bleach, Fabric Softener |
| Auto Suds Removal | Yes |
| Control Lock | Yes |
| Drum Light | No |
| End of Cycle Signal | Yes |
| Leveling Legs | Yes |
| LoadSense | Yes |
| Cabinet Vibration Sensor | Yes |
| True Balance® Anti-Vibration System | Yes |
| Laundry Appliance ThinQ® Smart Features | |
| Energy Monitoring | Yes |
| NFC Tag On | No |
| PCC | No |
| SmartDiagnosis™ (v3.0) | Yes |
| Tub Clean Coach | Yes |
| Wi-Fi | Yes |
| Motor | |
| Axis | Horizontal |
| Max RPM | 1260 |
| Motor Type | Inverter Direct Drive Motor |
| Materials and Finishes | |
| All Available Colors | White (W) |
| Cabinet | Painted Steel |
| Control Panel | Plastic |
| Door / Rim | Glass/White Rim |
| Door Cover | Clear Round Cover |
| NeveRust™ Stainless Steel Drum | Yes |
| Top Plate | Painted Steel |
| Power Source | |
| Washer Electrical Requirements | 120 V, 60 Hz, 6 A |
| Ratings | UL Listed |
| Washer Power Source Type | Electric |
| Options/Accessories | |
| LG Sidekick™ Pedestal Washer | WD300CW |
| Pedestal | WDP6W |
| Stacking Kit | KSTK4 |
| Dimensions | |
| Carton (WxHxD) | 29 3/4' x 41 7/8' x 31 1/2' |
| Depth with Door Open | (55' D with door open) |
| LG Sidekick™ Pedestal Washer (WxHxD) | 27 x 14 1/8 x 30 3/4 (50 1/2 D with door open) |
| Pedestal (WxHxD) | 27' x 13 5/8' x 28' (43 7/8' D with door open) |
| Product (WxHxD) | 27' x 39' x 30 1/4' |
| Weight (Product/Carton) | 185.2 / 198.4 lbs. |
| Warranty & UPC | |
| Direct Drive Motor | 10 Years |
| Drum | 3 Years |
| Parts and Labor | 1 Year |
| UPC | 048231349895 |
Energy Guide
Owner's Manual English 3,748K 01/04/2026
Owner's Manual Spanish 3,754K 01/04/2026