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TOTO Aurora 1G WASHLET+ S5 One-Piece Toilet - 1.0 GPF - White toilet bowl and seat on a white background

TOTO Aurora 1G WASHLET+ S5 One-Piece Toilet - MW6863446CUFG#01

by TOTO
SKU MW6863446CUFG#01

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  • Wireless remote: a wall-mountable remote in place of a control panel on the seat
  • Four user presets: each person saves their own wash, seat and dryer settings
  • Seamless seat: no crevice between the seat and the housing for grime to collect in
  • Instant warm water: heats on demand so the wash never runs cold partway through
  • PREMIST and EWATER+: mists the bowl before you use it and rinses the wand after
TOTO Aurora 1G WASHLET+ One-Piece Toilet - 1.0 GPF - White toilet bowl with cover on a white background
TOTO Aurora 1G WASHLET+ One-Piece Toilet - 1.0 GPF - top view

A Remote, and Settings That Remember You

The WASHLET S5 replaces the S2’s arm-mounted control panel with a wireless remote that holds settings for four people. Water temperature, seat temperature, pressure and nozzle position stop being something you adjust each time and become something already set the way you like it. In a household where two people want different things from a wash, that is the difference between a fixture you tolerate and one you enjoy. The remote can be mounted on the wall or left loose.

TOTO Aurora 1G WASHLET+ One-Piece Toilet - 1.0 GPF - White toilet with open lid on a white background

A Seamless Seat and Unlimited Warm Water

The S5 uses a seamless seat body, so there is no join between the seat and the housing — the part of a bidet seat that collects grime and is awkward to reach. Warm water is heated on demand rather than stored, keeping the wash warm for its full length and for back-to-back use, adjustable from approximately 95°F to 104°F. Rear, rear soft and front washes are all adjustable for pressure and nozzle position, with an automatic deodorizer and a night light included.

TOTO Aurora 1G WASHLET+ One-Piece Toilet - 1.0 GPF - side view

A New Flush Engine, Not a New Badge

A conventional gravity toilet empties its tank through a single valve, and that one uncontrolled release has to both rinse the bowl and start the siphon. The Aurora uses two nested tanks and two valves that fire in sequence — one sends the rim wash, the other the siphon jet. TOTO states this extends bowl and rim coverage by up to five times against a standard gravity flush at the same 1.0 gallons.

INTEGRAVITY works alongside TORNADO FLUSH, which is the shape of the bowl rather than the tank: two nozzles drive the water in a cyclonic path instead of feeding it through a ring of rim holes. Most listings for this toilet treat the two as one feature. They are separate systems, and the Aurora has both.

TOTO Aurora 1G WASHLET+ One-Piece Toilet - 1.0 GPF - Front view

Who Should Choose the Aurora WASHLET+ S5?

The Aurora WASHLET+ S5 is best suited to households where more than one person uses the bathroom, or to anyone who would simply rather not reach for a panel on the seat. It is the smallest price step in the Aurora range and the one that changes daily use the most.

If you want electrolyzed water misting the bowl as well as cleaning the wand, a fourth wash mode and a five-setting dryer, the Aurora WASHLET+ S7 is the next step up. If the remote is not important to you, the Aurora WASHLET+ S2 carries the same core features for less.

TOTO Aurora WASHLET+ S5 One-Piece Toilet — 1.0 GPF

The Aurora is TOTO’s 2026 flagship one-piece and the first toilet built around the INTEGRAVITY SYSTEM™, a gravity flush engine that sequences the rim wash and the siphon jet instead of releasing both at once. Its flared, fully skirted silhouette conceals the trapway, and CEFIONTECT glaze keeps the ceramic smooth enough that waste and mineral deposits struggle to take hold. This configuration pairs it with the WASHLET S5 (SW3446), model number MW6863446CUFG#01.

As a WASHLET+ system, the power cord and water supply run into a channel cast into the back of the bowl rather than out of the side of the seat, so nothing is visible from the front or the side.

Compare the Four WASHLET Options

Every Aurora WASHLET+ uses the same bowl, the same flush engine and the same glaze. The seat is the only thing that changes. The shaded column is the S5 on this page.

S2 S5 S7 S7A
Controls Panel on seat Wireless remote Premium remote Premium remote
User presets — 4 users 4 users 4 users
Wash modes 3 3 4 4
Water temperature 95–104°F 95–104°F 86–104°F 86–104°F
EWATER+ on wand Yes Yes Yes Yes
EWATER+ in bowl — — Yes Yes
PREMIST Yes Yes Yes Yes
Deodorizer Automatic Automatic High-output High-output
Warm air dryer 3 settings 3 settings 5 settings 5 settings
Night light Bowl Bowl Auto-sensing Auto-sensing
Seat construction Standard Seamless Seamless Seamless
Seat profile — 5.5 in 4.1 in 4.1 in
Auto open/close lid — — — Yes
Auto flush ready Yes Yes Yes Yes

Aurora WASHLET+ S5 Specifications

Specification Detail
Model number MW6863446CUFG#01
Flush rate 1.0 GPF single flush
Flush system INTEGRAVITY SYSTEM with TORNADO FLUSH
Bowl shape Elongated, one-piece, fully skirted
Rough-in 12 in (10 in and 14 in adapters sold separately)
Product size 29-5/8 × 18-11/16 × 27 in
Seat height 17-3/16 in, Universal Height
Water supply pressure Minimum 15 psi flowing at 2.64 gal/min
Electrical 120V grounded GFCI outlet, 12 in from floor
Water temperature 95°F – 104°F
Seat temperature 82°F – 97°F
Warm air dryer Three heat settings
Glaze CEFIONTECT, Cotton White
Shipping weight 132 lbs
Warranty One year limited, toilet and WASHLET

What’s Included

  • Aurora one-piece toilet, Cotton White
  • WASHLET S5 bidet seat (SW3446)
  • Wireless remote control
  • Remote wall-mounting hardware
  • Tank-to-bowl gasket and hardware
  • WASHLET mounting hardware
  • Toilet bolt caps
  • Installation manual and owner’s manual

A wax ring, floor mounting bolts and a water supply line are not included and will be needed on installation day.

Aurora 1G WASHLET+ Compatibility

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

  • Rough-in measurement: 12-inch standard, with 10-inch and 14-inch options available.
  • 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 of the toilet base (powers integrated 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 new toilet. Lower onto the flange, press down firmly, and hand-tighten the bolts evenly.
  5. Connect and test. Reconnect the supply line, restore water, and plug the WASHLET+ into the GFCI outlet.

Aurora 1G WASHLET+ S5 Downloads

TOTO Aurora 1G WASHLET+ Installation Manual

TOTO Aurora 1G WASHLET+ S5 Spec Sheet

Frequently Asked Questions

What is the difference between the WASHLET S5 and the S2?

Two things. The S5 uses a wireless remote with memory for four users in place of the S2’s arm-mounted control panel, and its seat body is seamless rather than standard. Instant warm water, PREMIST, EWATER+ wand cleaning, the deodorizer, the heated seat, the dryer and the night light are the same on both.

What does the WASHLET S7 add over the S5?

EWATER+ misting inside the bowl as well as on the wand, plus a button to trigger it by hand; a fourth wash mode; water adjustable down to 86°F rather than 95°F; a five-setting dryer in place of three; a high-output deodorizer mode; an auto-sensing night light; and a slimmer 4.1-inch seat.

Should I choose the 1.0 GPF Aurora or the other version?

The two are only about twelve dollars apart, so this is not a cost decision. The 1.0 GPF Aurora 1G suits most homes built in the last forty years and uses roughly 22% less water per flush. Choose the 1.28 GPF Aurora instead if you have a long horizontal drain run with minimal fall, older cast-iron pipe, or this is the only fixture on that branch.

What makes a WASHLET+ toilet different from a standard bidet seat installation?

WASHLET+ is a matched pair. The bowl has a channel cast into the back of it, and the seat runs its power cord and water hose rearward into that channel rather than out of the side. Nothing is visible from the front or the side. An ordinary bidet seat added later will work on this bowl, but its cord and hose will run across the skirt in plain view.

What are the downsides of the Aurora WASHLET+ S5?

The main limitations are that INTEGRAVITY launched in February 2026 and has no long-term field record yet, the warranty is one year rather than the two or three some competitors offer, and the toilet ships with a left-hand trip lever, so ADA compliance requires either a right-hand lever or auto flush. The Ebony finish also ships without CEFIONTECT glaze while costing more than Cotton White. At 132 lbs boxed this is a two-person installation.