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TOTO Aquia IV WASHLET+ S5 Two-Piece Toilet - Universal Height

by TOTO
SKU MW4463446CEMFGN#01
UPC/GTIN: 739268478664
$1,911.00
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Key Specs


  • High-tech Electronic Bidet Seat and Toilet Combination
  • Toilet and Washlet included
  • Concealed supply connection for seamless installation
  • Elongated front bowl and tank set with SoftClose Seat
  • Universal Height
  • 12" Rough-in (optional 10" & 14" rough-in)

Key Features


  • Elongated front WASHLET toilet seat with cover
  • EWATER+ auto cleans the wand
  • PREMIST of bowl before use
  • Remote control with illuminated touchpad
  • Quiet dual flush

Toto Aquia IV Washlet + S5

The TOTO Aquia IV WASHLET+ S5 is a premium, Universal Height two-piece toilet system built for ultimate comfort, efficiency, and cleanliness. Advanced, hands-free cleanliness is ensured by PREMIST and EWATER+ auto-cleaning of the wand.

Perfect for a luxurious, accessible, and water-saving bathroom upgrade featuring top-of-the-line comfort technology.

TOTO Aquia IV WASHLET+ S5 Two-Piece Toilet Specifications and Features

  • High-tech Electronic Bidet Seat and Toilet Combination
  • Toilet and Washlet included
  • Concealed supply connection for seamless installation
  • DYNAMAX TORNADO FLUSH utilizes 360° cleaning power to reach every part of the bowl
  • CEFIONTECT ceramic glaze minimizes waste from sticking to porous ceramic surfaces
  • Completely skirted design for a sleek and understated look
  • Easy to clean
  • Non-clog 2.5" trapway with clear glaze coating
  • Quiet dual Flush
  • Elongated front bowl and tank set with SoftClose Seat
  • Universal Height
  • 12" Rough-in (optional 10" & 14" rough-in)
  • Elongated front WASHLET toilet seat with cover
  • EWATER+ auto cleans the wand
  • PREMIST of bowl before use
  • Convenient slim wireless remote, with illuminated touchpad
  • Front and rear warm water cleansing with adjustable temperature and pressure control
  • Heated seat with temperature control
  • Warm Air Dryer
  • Quick-release feature
  • Chrome push-button included
  • Night light
TOTO Aquia IV WASHLET+ S5 Two-Piece Toilet closed up

PREMIST (Clean Synergy) with EWATER+ Self-Cleaning System

The system automatically mists the bowl before each use to help prevent waste from sticking. The wand also cleans itself before and after every use using treated water, enhancing overall hygiene and reducing maintenance.

TOTO Aquia IV WASHLET+ S5 Two-Piece Toilet - WASHLET with heated seat, warm-air dryer, and cleansing spray on a blue background

Heated Seat, Warm Air Dryer, and Built-In Deodorizer

Enjoy everyday comfort with a heated seat, adjustable warm air dryer, and automatic air deodorizer that helps keep the bathroom fresh. All features are customizable through the slim wireless remote.

TOTO Aquia IV WASHLET+ S5 Two-Piece Toilet - Diagram of adjustable water spray and pressure features on a gray background

Sleek WASHLET+ Design with Concealed Connections


The WASHLET+ system hides the water supply hose and power cord for a clean, integrated look. Combined with the skirted toilet design, it creates a modern aesthetic that’s also easier to clean.

TOTO Aquia IV WASHLET+ S5 Two-Piece Toilet - White toilet with washlet+ branding on a dark blue background

Powerful Dual Flush with Tornado Bowl Cleaning

Equipped with a high-efficiency dual flush system, the toilet uses a powerful 360° flushing action to clean the entire bowl effectively while conserving water.

TOTO Aquia IV WASHLET+ S5 Two-Piece Toilet - Close-up of a toilet bowl with Tornado Flush technology and swirling water pattern.

Frequently Asked Questions

  • The S5 includes upgraded features such as unlimited warm water, an automatic deodorizer, and user memory settings. It offers a more premium experience compared to the more basic S2 model.

  • Yes, the S5 uses an instant water heating system, so you get unlimited warm water throughout the entire wash without running out.

  • Yes, it features PREMIST technology that wets the bowl before use and a powerful flushing system to reduce waste sticking and improve cleanliness.

  • Yes, it includes a heated seat, adjustable wash settings, and a warm air dryer, all designed to enhance comfort and convenience for daily use.

  • You’ll need access to a nearby electrical outlet for the WASHLET functions, but it installs like a standard two-piece toilet with a concealed connection system for a cleaner look.

Shipping Policy

We offer free standard shipping on all orders to the contiguous United States. Orders shipped to Alaska, Hawaii, Puerto Rico, or other U.S. territories are subject to additional shipping charges. Please contact us before placing your order for a custom shipping quote: info@bidetsusa.com or 877-420-3443.

Product Sourcing & Fulfillment

Bidets USA is an authorized retailer for every brand we carry. Products are sourced directly from our manufacturer partners and may ship from manufacturer or fulfillment warehouses. All products are brand new and include full manufacturer warranties. Orders with multiple items may ship separately with different tracking numbers.

Order Processing

Most orders are processed within 1–2 business days. After placing your order, you'll receive a confirmation email. You'll receive tracking information within 24 hours of shipment. If you don't receive tracking within 2 business days, please contact us at info@bidetsusa.com.

If you need to update your shipping address, contact us before shipment at info@bidetsusa.com or 877-420-3443.

Shipping Methods & Transit Times

Method Items Cost Transit Time
Standard (UPS/FedEx/USPS) Small packages Free 3–6 business days
LTL Freight Large items Free 3–6 business days

Freight (LTL) Delivery

Large items ship via LTL freight and are delivered curbside only. Freight carriers do not bring items inside your home, condominium, or apartment. Please arrange to have the item brought indoors upon delivery.

The freight carrier will contact you by phone or email to schedule your delivery appointment. Prompt response is required. If the carrier cannot reach you within 2 business days, daily storage fees may begin to accrue. If contact cannot be made within 7 days, the shipment will be rerouted back to our warehouse and your refund will be reduced by rerouting fees, accrued storage fees, and any additional carrier charges.

Tracking Your Order

Once your order ships, you'll receive a confirmation email with your tracking number. Orders with multiple items may ship separately with multiple tracking numbers. If you don't receive a tracking email, check your spam folder or contact us at info@bidetsusa.com.

Cancellations

Orders may be canceled before shipment at no charge. If your order has already shipped, please refer to our Refund & Return Policy.

Damaged Items

Please inspect your order carefully before signing for delivery.

  • Freight (LTL) shipments: Report any damage within 48 hours of delivery.
  • Small parcel shipments: Report any damage within 15 days of delivery.

If you notice damage before signing, refuse the delivery and contact us immediately. If damage is discovered after delivery and reported within the applicable window above, we will arrange a replacement at no cost to you. Please email clear photos of the damage to info@bidetsusa.com.

Contact Us

Bidets USA
9700 Del Rio Dr, Lincoln, NE 68516
info@bidetsusa.com
877-420-3443

Return Policy

We understand that sometimes things don't work out as planned. That's why Bidets USA offers a straightforward 30-day return policy from the date of delivery for orders that qualify for a return.

To qualify for a return, items must be new, unopened, unused, and uninstalled. Due to the hygienic nature of bidet products, we cannot accept returns on any bidet seats, attachments, or integrated toilets once the packaging has been opened, installed, or connected to water.

All returns must include original packaging, parts, accessories, manuals, and warranty cards to be accepted.

Return Window: 30 days from delivery date for eligible returns

Getting Started with a Return

Before shipping anything back, you must contact our team to obtain a Return Merchandise Authorization (RMA) number.

Contact us at:

  • Email: info@bidetsusa.com
  • Phone: (877) 420-3443

We'll verify your return qualifies and provide you with:

  • Your unique RMA number
  • Return shipping address
  • Detailed return instructions

Inspect Your Delivery

Please examine your order immediately upon arrival and before signing for delivery.

If you notice visible damage:

  • Take photographs of the damage and packaging
  • Refuse the delivery if any damage
  • Contact us right away at info@bidetsusa.com

Cancellations

Order not yet shipped:

  • Contact us immediately to cancel and get full refund.

Return Shipping Costs

  • We provide a fully paid return shipping label at no cost to you

How you'll receive your label:

  • Email: Label sent to the email address you provide
  • No email: We'll mail the physical label to your shipping address

Restocking Fees

  • 15% restocking fee but there is no restocking fee for returns due to our error

Refunds

Refunds are issued only to the original payment method used for your purchase.

Exchanges

Need a different model or size? We're happy to help.

To initiate an exchange:

  1. Contact us at info@bidetsusa.com or call (877) 420-3443
  2. Obtain an RMA number for your exchange
  3. Items must be unopened, unused, and in original packaging with all components

Damage and Defects After Installation

All products carry manufacturer warranties.

If you discover a defect after installation:

  • Contact us at info@bidetsusa.com with your order details
  • Provide a description and photos/video of the issue
  • We'll help you troubleshoot or connect you with the manufacturer for warranty service

Contact Information

For all return and refund inquiries:

Bidets USA
Email: info@bidetsusa.com
Phone: (877) 420-3443
Address: 9700 Del Rio Dr, Lincoln, NE 68516


Return and Refund Policy Updated: April 2026

Bidets USA BBB Business Review