LG WM3998HBA 27 Inch Black Steel Washer/Dryer Combo with 4.5 cu. ft. Capacity

Model: WM3998HBA

LG Warranty
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MSRP: $1,469.00 ?


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Technical Details

Size Full Size
Weight 213.8 lb


Brand LG
UPC 048231027946
Warranty Info 1 Year Parts/Labor Warranty* Period of Coverage-Labor:1 Year,Parts:1 Year; Extended Coverage 10 Years Motor,Lifetime on Drum

General Information

Height 39"
Width 27"
Depth 30.25"
Exterior Width 27"


Cold Wash Cycle Yes
ColdWash Yes
NeveRust Stainless Steel Drum Yes
SmartThinQ Works with Google Assistant/Amazon Alexa Yes
10 Year Warranty on Direct Drive Motor Yes
TrueBalance Yes
Wi-Fi Connection Yes
Child Lock Yes
SmartDiagnosis Yes
End of Cycle Signal Yes
Allergiene Cycle Yes
SenseClean System Yes
Control Type Digital and Knobs
Steam Cycle Yes
Condensing Drying Yes
Drum Material Stainless Steel
Temperature Settings 5
Usage Residential
Leveling Legs Yes
Smart Appliance Yes
Wi-Fi Yes
Works with Alexa Yes
Works with Google Assistant Yes
Works with SmartThinQ Yes
Remote Diagnostics Yes
Remote Monitoring Yes
TurboWash Yes
6Motion Technology Yes

Electrical Specifications

Frequency 60 Hz.
Volts 120 Volts
Amps 15 Amps


Door Type Side Swing


Energy Star No
ADA Compliant No


Maximum Spin Speed (RPM) 1300
Venting Type Ventless
Color Black Steel
Wash Cycles 14
Capacity 4.5 cu. ft.
Expert Reviews
Top ten reviews.33936013
12 February 2021

The LG WM3998HBA is a sleek washer dryer with an ultra-large capacity, as well as Smart Home features and six different wash motions.

User Reviews
17 November 2022

I like that I can do laundry while Im at work or sleeping. If you do multiple loads this might not be the machine for you as it takes about 3 1/2 hours from start till done with dryer. I also noted that it does add humidity to the air when drying.

  • +

    Style/Design, Features/Settings

1 August 2022

I got my new washer 2 weeks ago and can't be happier. I was afraid because I read some bad reviews about the one with lower capacity. We went for this larger model and it's efficient it takes about 40 min to do the washing cycle and drying about 40 to 50 min. No weird or rubber smells.

24 June 2020

Great washer/dryer combo. Large capacity place your clothes in the evening and dry by the morning. The only thing bad is the lack of documentation. They send a generic washer instructions and nothing for the dryer. I called LG they were clueless but nice. Most of the information is found on YouTube.

5 August 2021

Like they if you cant have either or than why not both! This unit works great. Looks lovely. My laundry room is finer than ever

28 April 2022

I bought this unit to solve the problem that my lg washer and lg dryer would not fit in the closet designated as it had been constructed for smaller units. I thought the lg combo unit was the perfect solution without doing much research.

  • +


2 May 2022

I absolutely love this machine! I still kept my dryer in the event I want to wash more than 1 load since there’s a 15 min wash setting. U can download various other cycles as well. U need to go online for the thorough manual since the one that comes with the machine isn’t too detailed.

4 August 2020

This washer/dryer combo does exactly what it claims, and it does it well. It will wash and dry a smaller load in about 2-3 hours, and if you throw a bunch of towels in it'll take 4-6 hours. Normal dry setting leaves clothes slightly "humid" (I wouldn't quite say damp).

13 April 2022

Delivers a thorough drying function. Very pleased with this LG

1 January 2023

My laundry room is outside of my house, with my old machines, I used to have to go outside, switch clothes from washer to dryer, go back, check clothes in dryer to see if they're done, restart if they were not. Now it's set it and forget it. Alexa tells me when my load of laundry is done.

  • +

    ease of use, Style/Design, Features/Settings, Performance

29 December 2022

This is a huge machine. A queen comforter and sheets auto select to medium size load. Things come out clean and fresh smelling. The dryer works great. It’s nice not to have to switch loads.Read the instructions before you use it. Select normal dry and not turbo as this dries the best.

Product Highlights
  • Size: Full Size
  • Width: 27"
  • Height: 39"
  • Depth: 30.25"
  • Wash Cycles: 14
  • Drum Material: Stainless Steel
  • Condensing Drying: Yes
  • Control Type: Digital and Knobs
  • Usage: Residential
  • Leveling Legs: Yes
  • Smart Appliance: Yes
  • Wi-Fi: Yes
  • TurboWash
  • 6Motion Technology
  • ColdWash
  • NeveRust Stainless Steel Drum
  • SmartThinQ Works with Google Assistant/Amazon Alexa
  • 1 Year Parts/Labor Warranty* Period of Coverage-Labor:1 Year,Parts:1 Year; Extended Coverage 10 Years Motor,Lifetime on Drum
  • TrueBalance
  • Wi-Fi Connection
  • Child Lock
  • Cold Wash Cycle
  • SmartDiagnosis
  • End of Cycle Signal
  • Allergiene Cycle
  • SenseClean System
  • 1 Year Parts/Labor Warranty* Period of Coverage-Labor:1 Year,Parts:1 Year; Extended Coverage 10 Years Motor,Lifetime on Drum
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