Now you can fit more clothes in every load and run the dryer less often, saving time and money. It’s so quiet, you can finish laundry while streaming your favorite shows or catching a quick nap without interruption. And if you forget to clean the filter, don’t worry-FlowSense indicators will alert you when your ducts or filter need cleaning, either on the control panel or via a notification through our convenient LG ThinQ app.
7.4 cu. ft. Ultra Large Capacity
Free up your day-fit more clothes in every load with 7.4 cu. ft. of space. Running fewer loads saves energy and money on your utility bill.
FlowSense Duct Clogging & Lint Filter Indicators
FlowSense Duct Clogging and Lint Filter Indicators let you know when your ducts and filter need cleaning to avoid lint buildup, improve the dryer’s performance for greater efficiency and lower utility bills, and help give you safer, worry-free operation with fewer service calls.
LoDecibel Quiet Operation
Run the dryer whenever you want, without interrupting naptime or your favorite show. This dryer is designed for quiet operation, from the motor to the cabinet to individual components. Pleasant end-of-cycle chime lets you know when clothes are dry.
LG ThinQ Smart Technology
The LG 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 dryer remotely, track and download cycles, connect with Google or Alexa voice assistants, and access smart diagnosis, customer support, and much more.
Built-In Intelligence: AI Sensor Dry / Smart Pairing
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 drying motions, temperatures and more for advanced fabric care.
AI Sensor Dry detects moisture levels and automatically adjusts drying time for loads of all sizes-no more damp clothes, no more overdrying. With Smart Pairing, the washer can even tell the dryer to select a compatible drying cycle¹, making it the ultimate laundry hack.
LG ThinQ UP
ThinQ UP enabled smart appliances may receive software updates for new downloadable features and enhancements to be sent wirelessly to the appliance. Choose which features you want and customize your appliance based on your lifestyle and personal preferences.
LG ThinQ Care
Available within the LG ThinQ app, ThinQ Care sends proactive usage, maintenance, and diagnostic alerts to your smartphone, notifying you of potential issues and helping you keep your smart LG appliances running smoothly.
ENERGY STAR Certified
High efficiency sensor drying and low-heat settings save energy and money by using about 20% less energy² than conventional models without sacrificing features or performance.
Aluminized Alloy Steel Drum
An advanced aluminized alloy coating is added to the steel dryer drum to enhance durability and maintain its luster and attractive finish. Helps keep nicks and chips at bay so your dryer looks like new even after years of use.
Reversible Door
When space is tight or your laundry room doesn’t fit the “typical” setup, this dryer’s door can easily be reversed to fit your needs. Go from a right swing to a left swing in minutes-just unscrew the hinges and reattach using the pre-drilled holes on the opposite side.
Wrinkle Care Option
When you hate wrinkles but can’t be there to remove clothes as soon as they’re dry, just select the Wrinkle Care option before hitting start. The dryer will periodically tumble the load for up to 3 hours after the cycle is done or until the door is opened to help keep wrinkles at bay.
Closet Depth
LG closet-depth washers and dryers are worth showing off, but when space dictates otherwise it’s good to know they’ll easily fit in a closet with plenty of room to close the closet door. Install the pair side-by-side, or get a stacking kit and install the dryer over the washer to save even more space.
Power cord is included. Gas connector is sold separately and is not included.
Shipped with a 3-prong (grounding) plug. Gas dryers are configured for natural gas hook-up, but a gas connector must be purchased separately.
| Manufacturer | LG |
|---|---|
| Set Product as New from Date | Mar 16, 2026 |
| Set Product as New to Date | Jun 16, 2026 |
| Specification | Brand LG Model Number DLG3421W Product Name 7.4 Cu. Ft. Ultra Large Stackable Smart Gas Dryer with AI Sensor Dry and LoDecibel Quiet Operation Color White Color Finish White Product Height 39 inches Product Width 27 inches Product Depth 30 1/8 inches Depth With Door Open 51 3/8 inches Product Weight 123.02 pounds Capacity 7.4 cubic feet Steam Function No Dryer Heating Source Gas Fingerprint Resistant No Propane (LP) Convertible Yes Automatic Temperature Control Yes Moisture Sensor Yes Child Lock Yes Delay Start No End-Of-Cycle Signal Yes Time-Remaining Display Yes Vibration Reduction No Interior Light(s) No Total Maximum BTU Rating 20000 Reversible Door Hinge Yes Exhaust Vent Location Bottom 4-Way Venting No Control Type Dial Control Location Front panel Display Type LED Drum Material Aluminized alloy Drying Rack No Window Yes Number Of Drying Cycles 10 Drying Cycles Normal, Heavy Duty, Bedding, Towels, Perm. Press, Delicates, Quick Dry, Manual Dry, AI Dry, Downloaded Options and Programs Wrinkle Care, Energy Saver, Remote Start, Signal, Control Lock, Wi-Fi, Damp Signal Number of Temperature Settings 5 Temperature Settings High, Med. High, Medium, Med. Low, Low Pedestal Available Yes Pedestal Model Compatibility WDP6W Matching Washer Available Yes Matching Washer Type Front load Matching Washer Model Number WM3420CW Stackable Yes Stacking Kit Included No Stacking Kit Model Compatibility KSTK4 Propane Conversion Kit Model Compatibility 383EEL3002D Propane Conversion Kit Included No Self-Cleaning Filter No Lint Filter Full Indicator Yes Amperage 5 amperes Voltage 120 volts ENERGY STAR Certified Yes ADA Compliant No Product Safety Certifications and Standard(s) CSA Listed Consortium for Energy Efficiency (CEE) Rating CEE Not Qualified NSF Listed No Warranty - Parts 1 Year General, 3 Years Drum Warranty - Labor 1 Year General App Compatible Yes Works With Amazon Alexa Wireless Connectivity Wi-Fi Commercial Merchandise No |
| Hard Drive | 8 GB |