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LG 5.0 Cu Ft Smart Front Load Washer vs LG WM3400CW Front Load Washer

Buy the 5.0 CuFt Smart model if you want the most capacity and the most automation: AI DD picks the cycle for you, TurboWash 360 cuts wash time, and the steam Allergiene and Pet Care cycles handle allergens and pet odors. The WM3400CW is the simpler, proven choice: 4.5 cu ft, 6Motion with an inverter direct drive motor, ColdWash, and a strong 4.4 rating from over 2,200 owners. Both are 27 inches wide and 39 inches tall, so the real split is capacity, cycle range and smart features versus simplicity and a shorter depth.

  • Choose the 5.0 CuFt Smart if you wash king-size bedding, have pets or allergy sufferers at home, and want the machine to pick settings for you.
  • Choose the WM3400CW if you want a straightforward LG front loader with a proven record and a shallower body for a tight closet or second floor.

Prices

  • LG 5.0 Cu Ft Smart Front Load Washer: $370.99 at Trumans Fabric and Foam (last seen Nov 8)
  • LG WM3400CW Front Load Washer: $697.99 at Appliance Solutions (last seen Nov 1)
  • Difference: the LG 5.0 Cu Ft Smart Front Load Washer is $327.00 cheaper than the LG WM3400CW Front Load Washer at the latest prices (Nov 1 and Nov 8)
5
5.0 CuFt Smart Front Load Alpine White Washer with AI DD Built-In Intelligence

LG 5.0 Cu Ft Smart Front Load Washer

5.0 CuFt Smart Front Load Alpine White Washer with AI DD Built-In Intelligence

$370.99at Trumans Fabric and FoamObserved Nov 8, 2026, 5:17 PM
See all prices and details
Visit Trumans Fabric and Foam
Pros
  • AI DD sensors set motion, temperature and cycle from the load
  • TurboWash 360 finishes large loads in under 30 minutes
  • Allergiene steam cycle reduces common allergens by up to 99.9%
  • Pet Care cycle targets pet odors with a 4-step rinse
  • 5.0 cu ft handles a king comforter in one load
Cons
  • Deeper body at 33.12 in, and 57.75 in with the door open
  • 29 cycles take time to learn
  • Fewer owner ratings to judge long-term reliability
LG
LG WM3400CW

LG WM3400CW Front Load Washer

LG WM3400CW

4.4(2,211 ratings)
$697.99at Appliance SolutionsObserved Nov 1, 2026, 4:20 AM
See all prices and details
Visit Appliance Solutions
Pros
  • 4.4 out of 5 from 2,211 ratings
  • 6Motion with an inverter direct drive motor
  • ColdWash gets warm-water results from cold water
  • 30 in depth fits closets and second-floor spaces
  • Energy Star certified at about 100 kWh per year
Cons
  • No steam and no allergen or pet cycles
  • Only 6 cycles and 3 spin speeds
  • No Wi-Fi or app control

What separates them

LG 5.0 Cu Ft Smart Front Load WasherLG WM3400CW Front Load Washer
Capacity5.0 cu ft, fits a king comforter4.5 cu ft
Wash cycles29 cycles including Allergiene and Pet Care6 cycles
SteamYes, used by the Allergiene cycleNo
Smart featuresWi-Fi with ThinQ, Alexa and Google Assistant, AI DD auto cycle selectionNone
Spin speed1300 RPMNot published; 3 spin speeds
Depth33.12 in body, 57.75 in with door open30 in body, 55 in with door open
Motor and wash actionInverter drive with AI-selected motionsInverter Direct Drive with 6Motion
Owner feedbackNewer model with a smaller track record4.4 out of 5 from 2,211 ratings

Price history

  • LG 5.0 Cu Ft Smart Front Load Washer: lowest $370.99 on Nov 8 at Trumans Fabric and Foam.
  • LG WM3400CW Front Load Washer: lowest $697.99 on Nov 1 at Appliance Solutions.

Prices at every store

LG 5.0 Cu Ft Smart Front Load Washer

  • Trumans Fabric and FoamNew

    In stock

    $370.99Observed Nov 8, 2026, 5:17 PM
    Visit Trumans Fabric and Foam
  • a4lphoenix.comNew

    Availability unknown

    $749.00Observed Nov 8, 2026, 5:16 PM
    Visit a4lphoenix.com
  • Universal Appliance and Kitchen CenterNew

    Availability unknown

    $841.00Observed Nov 8, 2026, 5:16 PM
    Visit Universal Appliance and Kitchen Center
  • SearsNew

    Availability unknown

    $799.88+ $99.99 shippingObserved Nov 8, 2026, 5:16 PM
    Visit Sears
All 13 stores and price history →

LG WM3400CW Front Load Washer

  • Appliance SolutionsNew

    Availability unknown

    $697.99Observed Nov 1, 2026, 4:20 AM
    Visit Appliance Solutions
  • PC Richard & SonNew

    Availability unknown

    $748.97Observed Nov 1, 2026, 4:20 AM
    Visit PC Richard & Son
  • WalmartNew

    Availability unknown

    $1,059.47Observed Nov 1, 2026, 4:20 AM
    Visit Walmart

Also available at

  • WalmartCheck price at Walmart
All 3 stores and price history →

Specs compared

SpecLG 5.0 Cu Ft Smart Front Load WasherLG WM3400CW Front Load Washer
Width27 Inches27 in
Height39 Inches39 in
Depth33.12 Inches55" (with Door Open)
Weight203.9 Lb(s)—
Depth with Door Open57.75 Inches—
Spin Speed1300 RPMs—
Wash Cycles29 Cycles—
Voltage120 V—
Amperage10 A—
WiFi ConnectedYes—
Works withAmazon Alexa, Android, Google Assistant—
Water capacity—4.5 cu ft
Show all 40 specsShow fewer specs
SpecLG 5.0 Cu Ft Smart Front Load WasherLG WM3400CW Front Load Washer
Load type—Front Load
Stackable—Y
Color category—White
Brand—LG
Assembled product height—30 in
Number of wash cycles—6
Energy consumption per year—100 Kilowatt Hours
Number of temperature levels—5
Finish—Stainless Steel
Washing machine type

What reviewers say

LG 5.0 Cu Ft Smart Front Load Washer

Owner feedback on LG's AI DD front loaders is mostly positive on cleaning and capacity, with the automatic cycle selection and TurboWash speed singled out. Complaints tend to focus on cycle complexity, app setup and the machine's size.

What people mention
  • CleaningPraisedOwners say everyday loads and bulky bedding come out clean.
  • Cycle speedPraisedTurboWash is reported to handle large loads in well under an hour.
  • AI settingsMixedSome owners trust the automatic selection; others prefer to set cycles by hand.
  • ControlsCriticisedThe long cycle list and panel menus take time to learn.

LG WM3400CW Front Load Washer

  • 4.4 / 52,211 ratings

Owners of LG front loaders generally rate them well for cleaning and quiet operation. Common complaints center on cycle length and the lack of extra features on base models.

What people mention
  • CleaningPraisedOwners say it handles big, dirty loads without a second wash.
  • NoisePraisedThe direct-drive motor keeps wash and spin quiet.
  • Cycle timeCriticisedSome owners find normal cycles run long.
Reviews
  • Best Washing Machines for Your Home in 2025 - CNET

Questions and answers

Which is better for a household with pets?
The 5.0 CuFt Smart. Its Pet Care cycle pairs high-temp water with a 4-step rinse to cut pet odors, and the Allergiene steam cycle reduces dander. The WM3400CW has no steam or dedicated pet cycle.
Which holds more laundry?
The 5.0 CuFt Smart holds half a cubic foot more and fits a king-size comforter in one load. The WM3400CW at 4.5 cu ft still handles a large family load.
Which lasts longer?
Both use LG inverter direct drive motors, so the drivetrain is comparable. The WM3400CW has the longer public track record with 2,211 ratings at 4.4 out of 5; the smart model is newer with fewer ratings.
Is the smart model worth stepping up to?
Yes if you want steam, allergen and pet cycles, faster TurboWash loads and app control. If you just want clean clothes from a proven machine, the WM3400CW covers that.
Which fits a tighter space?
The WM3400CW. Its body is 30 in deep versus 33.12 in, and it needs 55 in with the door open versus 57.75 in. Both are 27 in wide and 39 in tall.
Do both stack with a dryer?
The WM3400CW is listed as stackable. The 5.0 CuFt Smart pairs with a matching LG dryer through Smart Pairing, which sends the right cycle to the dryer.

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  • 4.5 CuFt Front Load Electric Washer With Vibration Reduction Technology+ In Brushed Black vs LG WM3400CW

Buying guides that pick them

  • Best value washing machines
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Standard Washing Machines
Speeds—3
Model—WM3400CW
Door material—Glass
Assembled product weight—210 lb
Control switch type—Electronic
Power type—Corded Electric
Amps—10 Amps
Volts—120 Volts
Has nrtl listing certification—N
Washer Capacity—4.5 cu. ft.
Total Capacity—5.2 cu. ft.
Energy Star Certified—Yes
Wash Action Type—6Motion technology
Washing Mechanism—Inverter Direct Drive Motor
Steam Function—No
Washing Features—6Motion technology
Heavy Duty—Yes
Load Balance—LoadSense
Features
Mixed
Buyers like the simplicity but miss steam and smart options.