LG Signature WM9998HBA 29 inch Ventless Washer/Dryer Combo with 5.8 cu. ft. Mega Capacity, Dual Inverter Heat Pump Technology, Built-In Intelligence, ezDispense and Touch LCD Control in Brushed Black Steel
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LG
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Consumer Reports standouts across laundry and refrigeration that shoppers consistently love.
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Fan-favorite reliability keeps return rates low across LG's broad appliance lineup.
LG Signature WM9998HBA Features
Features:
- Load, set and go—run a wash & dry cycle in as fast as 89 minutes, with no need to transfer laundry
- The largest front load all-in-one unit with heat pump technology helps you power through laundry
- Space-saving 2-in-1 configuration, ventless design and standard 120v plug for flexible installation
- Dual Inverter Heat Pump technology delivers energy efficiency—using up to 52% less energy
- Built-in intelligence takes out the guesswork—AI technology selects optimal wash/dry settings
- Intuitive 7" LCD touchscreen simplifies laundry and perfectly complements the modern design
- Get the ThinQ® app to access smart functions, ThinQ Care™ alerts and download new ThinQ UP™ features
Why Buy LG SIGNATURE WM9998HBA WashCombo™ All-in-One 5.8 cu. ft. Mega Capacity Ventless Washer/Dryer
- All-in-one wash + dry: completes full laundry cycles in a single machine with no need to transfer clothes between washer and dryer
- Fast cycle performance: can finish wash-and-dry cycles in as little as about 89 minutes depending on load size and settings
- Ventless heat pump design: allows flexible installation almost anywhere using a standard 120V outlet, no external vent required
- Energy efficiency: Dual Inverter Heat Pump technology reduces energy use compared to traditional vented dryer systems
- Large 5.8 cu. ft. capacity: handles bigger loads including bulky items like bedding
- AI-powered settings: automatically selects optimal wash and dry cycles for better results with less guesswork
- Smart ThinQ® integration: enables remote control, cycle monitoring, and maintenance alerts from your phone
- Space-saving design: replaces separate washer and dryer, ideal for apartments or compact laundry spaces
- Modern interface: 7-inch touchscreen makes operation simple and intuitive
Frequently Asked Questions
Q: What is the WM9998HBA?
A: It is a premium LG SIGNATURE all-in-one ventless washer and dryer combo with built-in heat pump technology and smart controls.
Q: What is the capacity of the WM9998HBA?
A: It has a 5.8 cubic foot mega capacity, making it one of the largest all-in-one washer/dryer units available.
Q: Does it require a dryer vent?
A: No, it is a ventless system that uses heat pump technology, so it can be installed almost anywhere with a standard 120V outlet.
Q: How fast can it wash and dry clothes?
A: It can complete a full wash and dry cycle in about 89 minutes under optimized conditions.
Q: Does it have smart features?
A: Yes, it includes LG ThinQ smart technology for remote control, cycle monitoring, and diagnostics.
Q: Does it automatically dispense detergent?
A: Yes, it features ezDispense, which can automatically dispense the right amount of detergent and fabric softener.
Q: What type of drying technology does it use?
A: It uses Dual Inverter Heat Pump technology for energy-efficient, low-temperature drying.
Q: Is it energy efficient?
A: Yes, it is ENERGY STAR certified and uses significantly less energy than traditional washer-dryer setups.
Q: Can it be controlled from a phone?
A: Yes, it connects to the LG ThinQ app for remote operation and alerts.
Q: Does it have a display or interface on the machine?
A: Yes, it includes a 7-inch LCD touchscreen control panel.
Q: What kind of installation does it require?
A: It requires a standard 120V electrical outlet and does not need external venting, making installation flexible.
Pros and Cons of LG SIGNATURE WM9998HBA WashCombo™ All-in-One 5.8 cu. ft. Mega Capacity Ventless Washer/Dryer
Pros
- All-in-one wash & dry: completes laundry in a single machine with no need to transfer clothes between units
- Ventless heat pump design: allows flexible installation using a standard 120V outlet without external venting requirements
- Large 5.8 cu. ft. capacity: handles bigger loads, including bulky items like bedding and towels
- Fast cycle option: can finish wash-and-dry cycles in as little as about 89 minutes depending on load and settings
- Dual Inverter Heat Pump: improves energy efficiency by reducing energy use compared to traditional dryer systems
- AI-powered automation: automatically selects optimal wash and dry settings for better results with less guesswork
- Smart ThinQ® connectivity: enables remote control, cycle monitoring, and maintenance alerts from a smartphone
- Space-saving design: replaces separate washer and dryer, ideal for apartments or compact laundry spaces
Cons
- Longer full cycles vs traditional setups: some loads still take longer than separate washer and dryer systems
- Drying performance variability: heavier loads or mixed fabrics may require additional drying time
- Learning curve: multiple AI and smart features can take time to fully understand and optimize
- Higher upfront investment: premium technology and design place it above basic laundry units
- Maintenance considerations: advanced heat pump and filtration system may require more regular cleaning
- Lint management sensitivity: requires consistent filter maintenance for best drying performance
Conclusion
The WM9998HBA is best suited for users who want maximum convenience, space savings, and smart automation in a single laundry unit, offering strong washing performance, energy-efficient heat pump drying, and app-controlled features that simplify daily use, but it is less ideal for those who prioritize the fastest possible drying cycles or prefer the simplicity and flexibility of separate washer and dryer machines.
LG Signature WM9998HBA Specifications
| Width | |
| Exterior Width | 29" |
| Width | 29" |
| Depth | |
| Depth | 31 1/8" |
| Height | |
| Height | 40 3/4" |
LG Signature WM9998HBA Overview
Features:
- Load, set and go—run a wash & dry cycle in as fast as 89 minutes, with no need to transfer laundry
- The largest front load all-in-one unit with heat pump technology helps you power through laundry
- Space-saving 2-in-1 configuration, ventless design and standard 120v plug for flexible installation
- Dual Inverter Heat Pump technology delivers energy efficiency—using up to 52% less energy
- Built-in intelligence takes out the guesswork—AI technology selects optimal wash/dry settings
- Intuitive 7" LCD touchscreen simplifies laundry and perfectly complements the modern design
- Get the ThinQ® app to access smart functions, ThinQ Care™ alerts and download new ThinQ UP™ features
Why Buy LG SIGNATURE WM9998HBA WashCombo™ All-in-One 5.8 cu. ft. Mega Capacity Ventless Washer/Dryer
- All-in-one wash + dry: completes full laundry cycles in a single machine with no need to transfer clothes between washer and dryer
- Fast cycle performance: can finish wash-and-dry cycles in as little as about 89 minutes depending on load size and settings
- Ventless heat pump design: allows flexible installation almost anywhere using a standard 120V outlet, no external vent required
- Energy efficiency: Dual Inverter Heat Pump technology reduces energy use compared to traditional vented dryer systems
- Large 5.8 cu. ft. capacity: handles bigger loads including bulky items like bedding
- AI-powered settings: automatically selects optimal wash and dry cycles for better results with less guesswork
- Smart ThinQ® integration: enables remote control, cycle monitoring, and maintenance alerts from your phone
- Space-saving design: replaces separate washer and dryer, ideal for apartments or compact laundry spaces
- Modern interface: 7-inch touchscreen makes operation simple and intuitive
Frequently Asked Questions
Q: What is the WM9998HBA?
A: It is a premium LG SIGNATURE all-in-one ventless washer and dryer combo with built-in heat pump technology and smart controls.
Q: What is the capacity of the WM9998HBA?
A: It has a 5.8 cubic foot mega capacity, making it one of the largest all-in-one washer/dryer units available.
Q: Does it require a dryer vent?
A: No, it is a ventless system that uses heat pump technology, so it can be installed almost anywhere with a standard 120V outlet.
Q: How fast can it wash and dry clothes?
A: It can complete a full wash and dry cycle in about 89 minutes under optimized conditions.
Q: Does it have smart features?
A: Yes, it includes LG ThinQ smart technology for remote control, cycle monitoring, and diagnostics.
Q: Does it automatically dispense detergent?
A: Yes, it features ezDispense, which can automatically dispense the right amount of detergent and fabric softener.
Q: What type of drying technology does it use?
A: It uses Dual Inverter Heat Pump technology for energy-efficient, low-temperature drying.
Q: Is it energy efficient?
A: Yes, it is ENERGY STAR certified and uses significantly less energy than traditional washer-dryer setups.
Q: Can it be controlled from a phone?
A: Yes, it connects to the LG ThinQ app for remote operation and alerts.
Q: Does it have a display or interface on the machine?
A: Yes, it includes a 7-inch LCD touchscreen control panel.
Q: What kind of installation does it require?
A: It requires a standard 120V electrical outlet and does not need external venting, making installation flexible.
Pros and Cons of LG SIGNATURE WM9998HBA WashCombo™ All-in-One 5.8 cu. ft. Mega Capacity Ventless Washer/Dryer
Pros
- All-in-one wash & dry: completes laundry in a single machine with no need to transfer clothes between units
- Ventless heat pump design: allows flexible installation using a standard 120V outlet without external venting requirements
- Large 5.8 cu. ft. capacity: handles bigger loads, including bulky items like bedding and towels
- Fast cycle option: can finish wash-and-dry cycles in as little as about 89 minutes depending on load and settings
- Dual Inverter Heat Pump: improves energy efficiency by reducing energy use compared to traditional dryer systems
- AI-powered automation: automatically selects optimal wash and dry settings for better results with less guesswork
- Smart ThinQ® connectivity: enables remote control, cycle monitoring, and maintenance alerts from a smartphone
- Space-saving design: replaces separate washer and dryer, ideal for apartments or compact laundry spaces
Cons
- Longer full cycles vs traditional setups: some loads still take longer than separate washer and dryer systems
- Drying performance variability: heavier loads or mixed fabrics may require additional drying time
- Learning curve: multiple AI and smart features can take time to fully understand and optimize
- Higher upfront investment: premium technology and design place it above basic laundry units
- Maintenance considerations: advanced heat pump and filtration system may require more regular cleaning
- Lint management sensitivity: requires consistent filter maintenance for best drying performance
Conclusion
The WM9998HBA is best suited for users who want maximum convenience, space savings, and smart automation in a single laundry unit, offering strong washing performance, energy-efficient heat pump drying, and app-controlled features that simplify daily use, but it is less ideal for those who prioritize the fastest possible drying cycles or prefer the simplicity and flexibility of separate washer and dryer machines.
LG Signature WM9998HBA Specifications
| Width | |
| Exterior Width | 29" |
| Width | 29" |
| Depth | |
| Depth | 31 1/8" |
| Height | |
| Height | 40 3/4" |
LG Signature WM9998HBA Rebates
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Valid between
June 16, 2026 - July 10, 2026
Claims must be submitted online by
October 10, 2026.
LG Signature WM9998HBA Warranty & Returns
Warranty Information
2 Years Parts and Labor, 3 Years on Drum, 10 Years on Direct Drive Motor
Return Policy
Returns accepted within 30 days of delivery. Item must be in original packaging and unused condition.
LG Signature WM9998HBA Why Us
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