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TOTO Nexus Washlet + S7 Two-Piece toilet with skirted design and chrome-plated lever

TOTO Nexus Washlet + S7 Two-Piece 1.28 GPF

TOTO
SKU: MW4424726CEFGA#01

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TOTO Nexus WASHLET+ S7 — MW4424726CEFGA#01

The TOTO Nexus WASHLET+ S7 Two-Piece Toilet is a completely skirted two-piece toilet on TORNADO FLUSH® at 1.28 GPF, carrying the WASHLET+ S7 — the tier where EWATER+ starts cleaning the bowl as well as the wand.

The auto-flush configuration adds TOTO's THU857 kit so the toilet flushes on its own, and the block-style remote handles everything else from across the room. The standard configuration is the same toilet and the same seat without that kit.

  • Toilet Type: Two-piece WASHLET+ toilet
  • Height: Universal Height
  • Bowl Shape: Elongated, completely skirted
  • Flush: High-efficiency TORNADO FLUSH® — single 1.28 GPF (4.8 LPF)
  • Rough-In: 12" standard; 14" option available
  • Included WASHLET: WASHLET+ S7 (SW4726AT40)
  • Controls: Multifunction pearl white block-style remote, memory for up to 4 users
  • Auto Flush: Included with the auto-flush model (THU857 kit); available as an upgrade on the standard model

High-efficiency TORNADO FLUSH®

TOTO's TORNADO FLUSH rinses the bowl on a single 1.28 GPF flush, which TOTO classes as high-efficiency.

CEFIONTECT® Ceramic Glaze

CEFIONTECT minimizes waste sticking to porous ceramic surfaces, which supports easier bowl cleaning between flushes.

Completely Skirted WASHLET+ Design

The skirted exterior gives you a flat surface to wipe rather than a contoured trapway, and the WASHLET+ connection conceals the seat's supply line.

Adjustable Warm-Water Cleansing

The S7 cleanses front and rear with aerated warm water, oscillating and pulsating, and its water range starts lower than the S2 and S5 at 86ºF.

Heated Seat and Five-Setting Dryer

The seat is heated with its own temperature control, and the warm-air dryer offers five variable temperature settings.

EWATER+ on the Wand and the Bowl

EWATER+ cleans the wand and the bowl after every use on the S7, where the S2 and S5 clean the wand only — that is the real step up between the tiers.

TOTO Nexus S7 MW4424726CEFGA Installation

TOTO Nexus Washlet + S7 Two-Piece 1.28 GPF dimensions

TOTO Nexus Washlet + S7 Two-Piece 1.28 GPF Compatibility

The TOTO Nexus WASHLET+ S7 is a two-piece smart toilet with an elongated bowl and integrated bidet seat. Confirm these four things before ordering:

  • Rough-in measurement: 12-inch standard, with a 14-inch option available. A 10-inch rough-in is not available for this model.
  • 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.
  • Electrical outlet: GFCI 120V within 3 feet (powers integrated S7 WASHLET bidet seat).

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 opening.
  4. Seat the bowl. Lower the bowl onto the flange, press down firmly, and hand-tighten the bolts evenly.
  5. Attach the tank. Bolt the tank to the bowl bowl using the bolts and gasket provided.

Need a Professional Installer near you?

If you need help finding a professional installer in your area, checkout Licensed TOTO Installers page to find one near you.

TOTO Nexus Washlet + S7 Two-Piece Downloads

TOTO Nexus Washlet + S7 Two-Piece Installation Manual

TOTO Nexus Washlet + S7 Two-Piece Spare Parts Manual

TOTO Nexus Washlet + S7 Two-Piece Spec Sheet

Frequently Asked Questions about TOTO Nexus S7 MW4424726CEFGA

What's the difference between Toto Washlet S7 and S7A?

The difference between Toto Washlet S7 and S7A is that the S7A adds an automatic open/close lid and night light while offering the same core cleaning and comfort features as the S7.

Is the TOTO Nexus a good toilet?

The TOTO Nexus is a good toilet because it offers reliable flushing, easy maintenance with a skirted design, and built‑in compatibility with advanced bidet features.

What is the difference between TOTO WASHLET S5 and S7?

The difference between TOTO WASHLET S5 and S7 is that the S7 includes more advanced features like EWATER+, PREMIST, and a wider range of adjustable settings for water temperature and pressure.

Which is better, 1.28 GPF or 1.6 GPF?

Choosing between 1.28 GPF and 1.6 GPF depends on your priorities — 1.28 GPF uses less water and is more efficient, while 1.6 GPF can offer slightly stronger flushing for tougher loads.

How wide is the TOTO Nexus?

The TOTO Nexus is about the standard width for a modern toilet, giving a comfortable seating area without taking up extra space.

TOTO Nexus Washlet + S7 Two-Piece 1.28 GPF

TORNADO FLUSH® at 1.28 GPF

TOTO builds this Nexus on its TORNADO FLUSH system, which the sheet describes as high-efficiency at 1.28 GPF.

This is a single-flush toilet: one volume, 1.28 GPF (4.8 LPF), with no reduced-flush setting to choose between.

The flush is operated by a chrome plated trip lever on the side of the tank, the trap measures 2-1/8" across, and the bowl sets on a standard 12" rough-in with a 14" option.

  • High-efficiency TORNADO FLUSH system
  • Single 1.28 GPF (4.8 LPF) flush
  • Chrome plated trip lever flush control
TOTO Nexus Washlet + S7 Two-Piece 1.28 GPF

CEFIONTECT® with a Completely Skirted WASHLET+ Design

CEFIONTECT ceramic glaze minimizes waste from sticking to porous ceramic surfaces, supporting easier bowl cleaning between flushes.

TOTO describes the completely skirted design as a sleek and understated look that is easier to clean, with no contoured trapway to wipe around.

This is a two-piece toilet, so the tank and bowl are separate components: the CT442CUFGT40 bowl with the ST442EA tank.

  • CEFIONTECT glazed elongated bowl
  • Completely skirted two-piece exterior
  • Concealed WASHLET+ supply connection
TOTO Nexus Washlet + S7 Two-Piece 1.28 GPF

Adjustable Warm-Water Cleansing with Heated Seat and Dryer

The S7 fitted to this two-piece Nexus cleanses front and rear using gentle aerated warm water, with both oscillating and pulsating features.

Spray position, water temperature and water pressure each adjust on their own, and the water range runs 86ºF–104ºF.

An instantaneous water heater supplies continuous warm water, the seat is heated across 82ºF–97ºF, and the warm air dryer offers five variable settings.

  • Front and rear aerated warm water
  • Oscillating and pulsating spray modes
  • Five-setting warm air dryer
TOTO Nexus Washlet + S7 Two-Piece 1.28 GPF

EWATER+® on the Wand and Bowl with Remote Convenience

EWATER+ auto-cleans the wand and the bowl after every use, and PREMIST automatically mists the bowl before each one.

The wand also cleans itself inside and out before and after every use.

Controls are handled by a multifunction pearl white block-style remote control, and CLEAN RESIN keeps the wand and seat easier to maintain. Night light.

  • EWATER+ on the wand and bowl
  • PREMIST before every use
  • Memory settings for up to four users

What do you get with the Nexus WASHLET+ S7?

This is combination MW4424726CEFGA#01: the Nexus two-piece toilet with the CT442CUFGT40 elongated CEFIONTECT bowl, the ST442EA tank, and the SW4726AT40 WASHLET+ S7, in Cotton.

It is Universal Height, flushes once at 1.28 GPF (4.8 LPF), and sets on a 12" rough-in with a 14" option available.

The two-piece set also lists TOTO's 9AU321-A WASHLET Adaptor, the part that makes the concealed WASHLET+ connection at the tank.

The auto-flush model adds TOTO's THU857 Auto Flush Kit; the standard model does not include it, and TOTO lists it as an available upgrade.


TOTO Nexus WASHLET+ S7 Two-Piece Toilet Features

Feature Details
Nexus Toilet Features
TORNADO FLUSH® High-efficiency TORNADO FLUSH system - 1.28 GPF (4.8 LPF).
Water Use Single flush, 1.28 GPF (4.8 LPF).
CEFIONTECT® Ceramic glaze minimizes waste from sticking to porous ceramic surfaces.
Completely Skirted Design A sleek and understated look that's easier to clean.
Trap Diameter 2-1/8".
WASHLET+ Concealed Connection Concealed supply connection for seamless installation.
Two-Piece Construction Elongated front bowl toilet and tank with WASHLET+ S7 set.
Universal Height Universal Height.
Flush Control Chrome plated trip lever.
WASHLET Adaptor 9AU321-A WASHLET Adaptor listed with the two-piece set.
Auto Flush Included with the auto-flush model (THU857 kit); available as an upgrade on the standard model.
WASHLET S7 Features
Front and Rear Cleansing Gentle aerated, warm water, front and rear spray with oscillating and pulsating features.
Adjustable Cleansing Adjustable spray position, water temperature, and water pressure.
Instantaneous Water Heating Instantaneous water heater for continuous warm water and energy savings.
Warm Air Dryer Five variable temperature settings, 95ºF–140ºF.
Heated Seat Heated seat with temperature control, 82ºF–97ºF.
Automatic Deodorizer Automatic air deodorizer.
EWATER+® Auto-cleans the wand and bowl after every use.
PREMIST® Automatically mists the bowl before each use.
Self-Cleaning Wand Cleans itself inside and out before and after every use.
CLEAN RESIN® Keeps wand and seat cleaner, more hygienic, and effortless to maintain.
Seamless Seat Seamless seat design eliminates the gap where dirt collects.
Night Light Night light.
Controls Multifunction pearl white block-style remote control.
User Memory Personalized memory settings for up to 4 users.
Auto Energy Saver Adjusts the seat temperature when inactive.


TOTO Nexus WASHLET+ S7 Two-Piece Toilet Specifications

Specification Details
Combination Model MW4424726CEFGA#01
Series Nexus
Toilet Construction Two-Piece
Bowl Model CT442CUFGT40
Tank Model ST442EA
WASHLET Model SW4726AT40 (WASHLET+ S7)
WASHLET Adaptor 9AU321-A
Bowl Shape Elongated, completely skirted
Color #01 Cotton
Height Classification Universal Height
Seat Height Not stated on this sheet
Rough-In 12"
Optional Rough-In 14" option available
Trap Diameter 2-1/8"
Water Use 1.28 GPF (4.8 LPF)
Flush System TORNADO FLUSH®
Flush Control Chrome plated trip lever
Auto Flush Included with the auto-flush model (THU857 kit); available as an upgrade on the standard model
Electrical Not stated on this sheet
ADA Compliance ADA compliant for residential use with autoflush feature model, or with trip lever located on the approach side
Warranty One Year Limited Warranty (combination)

TOTO Nexus S7 MW4424726CEFGA Reviews