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LG 5.5 cu. ft. Top Load Washer with AI Sensing

Item 1817323 | Model WT8400CB
Our Online Price Includes*
*Online purchases only. For most members. Orders to AK, HI, & PR have additional shipping fees. **Terms and conditions apply. See details

How To Get It

Please review our delivery and installation guidelines prior to purchase:
Delivery and Installation Guidelines

  • EasyUnload™
  • Built-In Intelligence
  • TurboWash3D™ Technology
  • ThinQ® Smart Technology
  • ENERGY STAR® Certified

Complete Your Bundle

View Bundle
LG 7.3 cu. ft. Rear Control Gas Dryer with Built-In Intelligence

Costco Direct Savings
Purchase multiple Costco Direct items on the same order to receive additional savings. Items must ship to the same address to receive savings.

  • Buy 2 Items, Save $100
  • Buy 3 Items, Save $200
  • Buy 4 Items, Save $300
  • Buy 5 or more Items, Save $400
Valid 8/31/26 through 10/29/26. While supplies last. Online-Only. Limit 2 redemptions per member. Costco Direct Savings can be combined with other promotions.
WARNINGWARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov.

BrandLG
ConnectivityWi-Fi Enabled
Costco DirectCostco Direct
FeaturesEnergy Star Certified
ModelWT8400CB
ModelWT8400CW
Number of Wash Cycles8 Cycle
Number of Wash Temperatures5
Number of Washer Options14
Online OnlyOnline Only
Power SourceElectric
Voltage120 V
Washer Capacity5.5 cu. ft.
Washer Dimensions: W x D x H27 in. x 28.38 in. x 43.5 in.
Washer Load TypeTop Load
Washer SizeX-Large (Greater than 5.2 cu. ft.)
Washer Tub MaterialStainless Steel
Washer Weight130 lb
Washer Width27 in.

Manufacturer's Warranty Information

Warranty

  • 2nd Year Warranty

  • Free Technical Support - Step-By-Step Instructions, Troubleshooting & More

  • 90 Day Return Policy

What’s Included
  • Delivery & Basic Hookup: Professional delivery and connection to existing compatible utilities are included in the price for most members. Confirm by entering your ZIP code and reviewing "Services" at checkout.
  • Haul Away: We will haul away your old appliance at the time of delivery for basic hookup items (refrigerators, freezers, or electric dryers-ranges-all in ones) or at time of installation if a secondary appointment is required (dishwashers, gas appliances, built-in appliances such as microwaves, wall ovens, cooktops).
    • Note: Haul Away is available, it is on a one-for-one, like item, basis. If Costco does not offer installation in your area for wall ovens, dishwashers, cooktops, or over the range microwaves and you want our team to haul away, they should be  professionally uninstalled and ready for pickup prior to delivery.
  • Safety First: Our teams are required to install anti-tip brackets where applicable at no extra cost.
  • Additional, in-depth information to be prepared for a successful delivery day can be found here: Delivery and Installation Guidelines - Appliances


 

Member Readiness & Requirements
  • Utilities: Existing electrical outlets, water shut-offs, and gas valves must be accessible and within 3 feet of the appliance but not through walls, floors or cabinets.  Must be in good operational condition.
  • No Home Modifications: Our teams are not licensed carpenters, plumbers, or electricians. We cannot modify cabinetry, flooring, countertops, walls or baseboards.
  • Accessibility: An adult (18+) must be present. The delivery path (both inside and out) must be clear and accessible without risk to property or personnel.
  • Propane (LP) Disclaimer: We connect to Natural Gas only. We cannot connect to Propane (LP) lines, even if a conversion kit is provided.
  • Additional, in-depth information to be prepared for a successful delivery day can be found here: Delivery and Installation Guidelines - Appliances


 

Scheduling & Logistics
  • Notification: You will receive a 2-hour window via phone/SMS between 6–9 PM local time the evening before your scheduled delivery. If a secondary installation appointment is required (dishwasher, gas and built-in appliances) you will also be contacted by your installer with a 4-hour window and then a 30-minute call prior to arriving at your home.
  • Timeline: Delivery must be accepted within 10 days of contact to avoid order cancellation.
  • Service Area: We typically deliver within a 50-mile radius of any Costco warehouse. Please enter your delivery location zip code on the homepage or product page to verify availability for your location. Delivery to AK, HI, and PR incur additional shipping fees.

If a disposal, recycling or e-waste fee or tax is applicable in your state, this will be applied to your order and collected at checkout.

⚠️ Drip Pan Requirement: Building codes require a drip pan for all installations above a basement or on upper floors. A pan is generally not required for first-floor concrete slab installations. Please note: Drip pan installation is not included with home delivery.

2-Year Manufacturer’s Parts & Labor Warranty
  • Please visit LG.com/us/support or call LG 1-800-243-0000, available 24 hrs/7 days a week.

Shop Confidently

We are committed to offering the best value to our members, with a risk-free 100% satisfaction guarantee on both your membership and merchandise. View Costco's Return Policy

Costco will accept returns within 90 days (from the date the member receives the merchandise) for this product.

For appliance returns and/or exchanges, please contact Costco Member Services at 800-955-2292.