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TOTO Aquia IV WASHLET+ S5 Two-Piece Toilet - White toilet with closed lid on a white background

TOTO Aquia IV WASHLET+ S5 Two-Piece Toilet - 1.28 GPF & 0.9 GPF

by TOTO
SKU MW4463446CEMGN#01

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$1,938.00
$1,357.00
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TOTO Aquia IV Washlet+ S5 1.28 GPF Two-Piece

  • DYNAMAX Tornado Flush: 360-degree cleaning power reaches every part of the bowl for a thorough flush
  • EWATER+ Self-Cleaning: Electrolyzed water mists the wand before and after each use
  • PREMIST Bowl Spray: Mists the bowl before each use to help waste rinse away
  • Heated Seat: Adjustable warm seat for added comfort
  • Warm Air Dryer: Built-in dryer for a hands-free finish
  • Front and Rear Warm Water Cleansing: Adjustable temperature and pressure control for customized wash
  • Wireless Remote Control: Slim remote with illuminated touchpad for easy adjustments
TOTO Aquia IV WASHLET+ S5 Two-Piece Toilet - top view
TOTO Aquia IV WASHLET+ S5 Two-Piece Toilet - Washlet+ toilet technology display with TOTO branding on a dark background

EWATER+ & PREMIST Cleaning

The Aquia IV WASHLET+ S5 keeps things clean automatically. EWATER+ rinses the wand after each use, while PREMIST sprays the bowl before use to help keep it cleaner.

TOTO Aquia IV WASHLET+ S5 Two-Piece Toilet - Washlet toilet seat with features highlighted on a blue background

Heated Seat & Warm Air Dryer

The heated seat keeps the toilet warm and comfortable. The warm air dryer helps reduce the need for toilet paper and adds extra convenience.

TOTO Aquia IV WASHLET+ S5 Two-Piece Toilet - Remote control panel with various symbols and labels on a blue gradient background

Slim Wireless Remote Control

The slim wireless remote makes it easy to adjust your settings. You can control the water spray, seat temperature, and dryer with simple buttons.

TOTO Aquia IV WASHLET+ S5 Two-Piece Toilet - Dynamax tornado flush

Quiet Dual Flush System

The Aquia IV uses a quiet dual flush system designed to save water while still providing strong cleaning power for the bowl.

TOTO Aquia IV WASHLET+ S5 Two-Piece Toilet 

The TOTO Aquia IV WASHLET+ S5 is a premium, two-piece toilet system offering the highest level of luxury and water efficiency. The top-tier S5 WASHLET provides ultimate comfort with a heated seat, customizable warm water spray, and an automatic air deodorizer, all managed with a slim wireless remote. Advanced, hands-free hygiene is ensured by PREMIST and EWATER+ auto-cleaning of the wand.

TOTO Aquia IV S5 Two-Piece 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
  • 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

TOTO Aquia IV WASHLET+ S5 Two-Piece Toilet - 1.28 GPF & 0.9 GPF Compatibility

The TOTO Aquia IV WASHLET+ S5 is a two-piece elongated toilet with an integrated S5 bidet seat. Confirm these four things before ordering:

  • Rough-in measurement: 12-inch standard. 10" and 14" supported with TSU01W adapter (sold separately).
  • Floor clearance: 21 inches in front of the bowl, 15 inches on each side.
  • Water supply: Standard ½-inch connection at the base of the toilet. Concealed supply cord included.
  • Electrical outlet: GFCI 120V within 3 feet (powers S5 WASHLET bidet seat).
Toto toilet compatibility. Will it fit your space/

Installation steps

  1. Prep. Shut off the water supply, flush to empty the tank, then disconnect the supply line.
  2. Remove the old toilet. Unbolt from the floor and scrape the old wax ring from the flange.
  3. Set the wax ring. Place a new wax ring on the flange, centered over the drain.
  4. Seat the bowl and tank. Lower the bowl and tank onto the flange, press down firmly, and hand-tighten bolts evenly.
  5. Connect and test. Reconnect the supply line, restore water, and plug the S5 WASHLET into the GFCI outlet.

TOTO Aquia IV S5 Two-Piece Downloads

TOTO Aquia IV S5 Owner's and Installation Manual

TOTO Aquia IV S5 Spec Sheet

Frequently Asked Questions

  • The TOTO Aquia IV features a water-saving dual flush system, a powerful bowl cleaning flush, a smooth skirted design for easier cleaning, and WASHLET+ compatibility for adding a bidet seat.

  • Yes, the TOTO Aquia IV is a good toilet because it combines strong flushing performance, modern design, and water-efficient technology, making it a popular choice for many bathrooms.

  • The TOTO Aquia IV is made from durable ceramic with a special smooth glaze that helps keep the bowl cleaner and prevents buildup.