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TOTO Nexus 1G WASHLET+ S5 Two-Piece Toilet - 1.0 GPF - White toilet with seat cover on a white background

TOTO Nexus 1G WASHLET+ S5 Two-Piece Toilet - 1.0 GPF

by TOTO
SKU MW4423446CUFG#01
UPC/GTIN: 739268478657
$1,534.00
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TOTO Nexus 1G

  • Tornado Flush: Centrifugal, cyclonic rinsing action utilizes two powerful nozzles to clear the bowl efficiently at an ultra-low 1.0 GPF volume
  • CEFIONTECT Glaze: Smooth ceramic finish minimizes surface friction to keep waste from adhering and simplify maintenance
  • Concealed Connection: Specifically molded housing channels hide all bidet hoses and electrical cords out of sight
  • EWATER+ Tech: Electrolyzed water automatically rinses the spray nozzle and bowl to maintain standard cleanliness and daily care
  • Fully Skirted Design: Smooth ceramic apron encloses the internal trapway entirely, removing tedious dust collection spots
  • WaterSense Certified: Meets strict EPA specifications for water efficiency and performance, saving up to 35% more water than standard 1.6 GPF models
  • CALGreen Compliant: Meets regional standards of the California Green Building Standards Code for environmental sustainability
TOTO Nexus 1G WASHLET+ S5 Two-Piece Toilet - 1.0 GPF - front view
TOTO Nexus 1G WASHLET+ S5 Two-Piece Toilet - 1.0 GPF - Toilet with Cefiontect technology illustration showing waste minimization on a dark background

Easy-Clean Glaze

The CEFIONTECT glaze creates an extraordinarily smooth ceramic surface that helps keep the bowl clean. By preventing debris and mold from adhering to the porcelain, it ensures that routine bathroom maintenance requires less time and effort.

TOTO Nexus 1G WASHLET+ S5 Two-Piece Toilet - 1.0 GPF - Close-up of a toilet bowl with cleaning solution, featuring the 'Tornado Flush' text.

Powerful Tornado Flush

The TORNADO FLUSH system utilizes two powerful nozzles to create a centrifugal, cyclonic rinsing action with an ultra-efficient 1.0 GPF volume. It delivers a strong and efficient clean with every flush, sweeping away waste efficiently.

TOTO Nexus 1G WASHLET+ S5 Two-Piece Toilet - 1.0 GPF - side view

Smooth Trapway Design

The fully skirted design conceals the trapway completely, featuring smooth lines that eliminate the dusty curves found on traditional toilets. It ensures a sleek look while improving external wipe-down maintenance.

TOTO Nexus 1G WASHLET+ S5 Two-Piece Toilet - 1.0 GPF - top view

Comfort and Convenience

A spacious elongated bowl and premium integrated electronic bidet features—such as a heated seat, warm air dryer, and oscillating dual-action spray—ensure your bathroom routine is exceptionally comfortable and easy to use every day.

TOTO Nexus 1G WASHLET+ S5 Two-Piece Toilet 

The TOTO Nexus® 1G® blends high-performance flushing with a clean, contemporary aesthetic. Featuring a modular two-piece design, an ultra-high-efficiency 1.0 GPF TORNADO FLUSH® engine, and an ultra-smooth CEFIONTECT® glaze, this system delivers premium cleanliness and modern water conservation. Integrated with the advanced WASHLET+ S5 bidet seat, it completely conceals all supply lines and cords for a seamless, upscale look.

Perfect for homeowners seeking a powerful, modern two-piece toilet that combines reliable waste clearing with premium, wireless-controlled bidet comfort and maximum water savings.

TOTO Nexus 1G Specifications and Features

  • Advanced Electronic Bidet Seat Integration combining the Nexus two-piece toilet bowl with the premium WASHLET S5 seat
  • CEFIONTECT® ceramic glaze prevents debris and mold from sticking to porous ceramic surfaces
  • Ultra-high-efficiency TORNADO FLUSH® system delivers powerful, cyclonic rinsing performance at an eco-friendly 1.0 GPF
  • Modern two-piece design with a fully skirted bowl that completely conceals the trapway for easy cleaning
  • Concealed supply connection ensures bidet water hoses and power cords are hidden from view
  • EWATER+® and PREMIST® systems automatically mist the bowl and clean the bidet wand after every use
  • Front and rear warm water wash featuring a gentle aerated, dual-action spray with oscillating and pulsating features
  • Comfortable heated seat with personal temperature controls
  • Warm air drying system with three variable temperature settings to reduce paper use
  • Automatic air deodorizer activates during use to keep the bathroom air fresh
  • Oversized, non-clog 2.5" trapway featuring a clear glaze coating to maximize clearing power
  • Standard 12" rough-in installation (Optional 10" and 14" rough-ins supported via customization)

TOTO Nexus 1G WASHLET+ S5 Two-Piece Toilet - 1.0 GPF Compatibility

The TOTO Nexus 1G WASHLET+ S5 is a two-piece smart toilet with an integrated bidet seat. Confirm these four things before ordering:

  • Rough-in measurement: 12-inch standard. 10"/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.
  • Electrical outlet: GFCI 120V within 3 feet (powers integrated WASHLET+ S5 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 bowl. Place a new wax ring on the flange centered over the drain, then lower the bowl and press firmly.
  4. Attach the tank. Bolt the tank to the bowl, hand-tightening all bolts evenly to avoid cracks.
  5. Connect and test. Reconnect the supply line, restore water, and plug into the GFCI outlet to power the bidet seat.

TOTO Nexus 1G WASHLET+ S5 Two-Piece Downloads

TOTO Nexus 1G WASHLET+ Installation Manual

TOTO Nexus 1G WASHLET+ Spec Sheet

Frequently Asked Questions

  • Yes, the TOTO Nexus is a highly regarded toilet known for its exceptional reliability, high-performance flushing mechanism, and durable engineering. Homeowners and plumbing professionals trust it because its large 2.5" trapway and strong gravity-based flush engine work together effectively to prevent clogs and ensure a dependable everyday bathroom routine.

  • The integrated WASHLET S5 seat brings a suite of premium luxury features to your bathroom, including a convenient slim wireless remote control with an illuminated touchpad, customized warm water washing, a heated seat, and an adjustable warm air dryer. It also includes an automatic air deodorizer to keep your space smelling fresh, and a quick-release docking station for effortless cleaning access.

  • The TOTO Nexus features an ultra-high-efficiency 1.0 GPF flow rate powered by a gravity-based TORNADO FLUSH® system. This two-piece elongated toilet features a fully skirted modern design, an oversized 2.5-inch clear-glazed trapway, a standard 12-inch rough-in (with 10-inch and 14-inch modifications supported), an ultra-smooth CEFIONTECT® glaze, and built-in channels for a concealed WASHLET®+ bidet installation.