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TOTO Aquia IV WASHLET+ S5 One-Piece Toilet

by TOTO
SKU MW6463446CEMFGN#01
UPC/GTIN: 739268478381
$1,659.00

Key Specs


  • Non-clog 2.5" trapway with clear glaze coating
  • Quiet dual flush
  • Universal Height
  • 12" Rough-in (optional 10" & 14" rough-in)
  • Elongated front WASHLET toilet seat with cover

Key Features


  • 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

TOTO Aquia IV WASHLET+ S5 One-Piece Toilet 

The TOTO Aquia IV WASHLET+ S5 One-Piece Toilet offers the ultimate combination of luxury and effortless cleaning. The top-tier WASHLET S5 provides luxurious comfort with a heated seat, warm water spray, automatic air deodorizer, and full control via a slim wireless remote.

Perfect for homeowners who desire the best in modern hygiene, design, and comfort.

TOTO Aquia IV WASHLET+ S5 One-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 that’s easier to clean
  • Non-clog 2.5" trapway with clear glaze coating
  • Quiet dual flush
  • 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
  • Automatic air deodorizer
  • Warm air drying with three variable temperature settings
  • Quick-release feature
  • Chrome push-button included
TOTO Aquia IV WASHLET+ S5 One-Piece Toilet - left side

PREMIST (Clean Synergy) with Self-Cleaning Wand

The bowl is lightly misted before each use to help prevent waste from sticking. The wand also cleans itself automatically before and after use to help maintain better hygiene.

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

Heated Seat, Warm Air Dryer, and Deodorizer

Includes comfort features like a heated seat, adjustable dryer, and built-in deodorizer. These help improve your overall experience and keep your bathroom smelling fresh.

TOTO Aquia IV WASHLET+ S5 One-Piece Toilet - Diagram of instant warm water system for a TOTO washlet bidet with text explaining its functionality.

Night Light with Easy Remote Control

A soft night light helps you see at night without turning on bright lights. The remote control makes it easy to adjust settings and save preferences for different users.

TOTO Aquia IV WASHLET+ S5 One-Piece Toilet - Washlet toilet with night light feature on a black background

Universal Height for Everyday Comfort

Designed at a comfortable height, making it easier to sit down and stand up. This is ideal for most users and adds convenience for daily use.

TOTO Aquia IV WASHLET+ S5 One-Piece Toilet dimensions

Frequently Asked Questions

  • A one-piece toilet has a smooth, seamless design that is easier to clean and looks more modern. It also has fewer gaps where dirt can build up.

  • Yes, it comes with a remote control that makes it easy to adjust settings. It’s designed to be simple and user-friendly.

  • Yes, it requires a nearby power outlet to use features like the heated seat, warm water wash, dryer, and deodorizer.

  • Yes, the S5 provides continuous warm water, so it doesn’t run out during use. This makes it more comfortable, especially for longer use.

  • Yes, you can adjust the water temperature, pressure, and spray position. You can also save your preferred settings for easy use.

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

Orders placed before 5:00 PM CST are typically processed the same day. 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 Drive, 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 possible so the carrier returns it directly
  • Contact us right away at info@bidetsusa.com

Timeframes for reporting damage:

  • LTL Freight shipments: Must be reported within 48 hours of delivery
  • UPS/FedEx Ground shipments: Must be reported within 15 days of delivery

These are carrier requirements for filing damage claims. We cannot assist with damage claims reported after these windows, especially if the product has been installed or altered.

Cancellations

Order not yet shipped:

  • Contact us immediately to cancel and get full refund.

Order already shipped via UPS/FedEx Ground:

  • We will email you a prepaid return label once the order arrives
  • Standard return process applies upon receipt

Order already shipped via LTL Freight:

  • Contact us for return authorization and instructions

Return Shipping Costs

Our error (wrong item shipped, defective product, shipping damage):

  • We provide a fully paid return shipping label at no cost to you
  • We will send the correct replacement or issue a full refund
  • No charges to you

Buyer-initiated return (changed mind, ordered incorrect item, compatibility issues):

  • We provide a fully paid return shipping label at no cost to you
  • Restocking fee of 15% will be deducted from refund
  • We cannot accept returns on bidet seats if box has been opened

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

  • No restocking fee for returns due to our error (defective, damaged, incorrect items)
  • 15% restocking fee for buyer-initiated returns (changed mind, wrong item ordered)
  • Restocking fees may apply to returns with missing parts, damaged packaging, or items not in resalable condition
  • Any applicable restocking fee will be deducted from your refund amount
  • Specific manufacturers may have additional restocking requirements (noted in product descriptions when applicable)

Refunds

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

Timeline:

  • Refunds processed within 15 days of receiving your returned item(s) in resalable condition
  • For pre-shipment cancellations, refunds processed within 3 days of notification

Refund amounts:

  • Our error: Full refund
  • Buyer-initiated: Purchase price minus 15% restocking fee

Items must be received in resalable condition to qualify for a refund.

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
  4. Exchange must be requested within 30 days of delivery
  5. 15% Restocking fee applies. 

Exchange shipping:

  • Exchange shipping will be free but a 15% restocking fee applies to the returned item.

Refunds processed within 15 days of receiving your returned item(s) in resalable condition.

Damage and Defects After Installation

Once a product has been installed, we can no longer accept it as a return. However, 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 Drive, Lincoln, NE 68516


Return and Refund Policy Updated: April 2026

Bidets USA BBB Business Review