Toto

TOTO Aquia IV Washlet+ S2 1.28 Gpf & 0.8 Gpf One or Two-Piece Toilet

SKU: MW6463346CEMFGN#01

Regular price: Price: $1,453.00
Regular price: List Price: $2,075.00
Sale price: Price: $1,453.00
Unit price: per

Toilet Style One Piece Two Piece

Rough-In Size 12" 10" 14"

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1 Year Warranty

Modern Simplicity, Timeless Design

The TOTO Aquia IV WASHLET+ S2 Toilet merges sleek, contemporary styling with reliable performance and integrated bidet comfort. Available in both one-piece and two-piece configurations, the Aquia IV offers flexibility for different layouts. The one-piece version features a zero-gap tank-to-bowl connection, creating a smooth, streamlined profile that’s easy to clean and visually refined.

Dual chrome push buttons on the top of the tank allow simple, water-saving control of the 1.28 GPF (full flush) and 0.9 GPF (light flush) options. The system combines efficient DYNAMAX TORNADO FLUSH® technology with TOTO’s CEFIONTECT® glaze to help keep the bowl cleaner for longer with every flush.

Designed for Comfort and Flexibility

Built for modern living, the Aquia IV WASHLET+ S2 accommodates 10", 12", or 14" rough-ins with TOTO’s UniFit® adapter system—ensuring a perfect fit for virtually any bathroom. The Universal Height bowl provides comfortable seating for most adults, while the skirted design enhances both style and ease of cleaning.

The included WASHLET S2 bidet seat delivers core TOTO comfort features such as continuous warm water, a heated seat, warm air drying, and an automatic deodorizer. All cords and hoses are concealed through the WASHLET+ system for a clean, built-in appearance.
The Aquia IV WASHLET+ S2 keeps your bathroom fresh and low-maintenance with PREMIST®, which sprays the bowl before every use to prevent waste buildup. After cleansing, the EWATER+® feature uses electrolyzed water to automatically sanitize the wand inside and out, reducing the need for harsh cleaners and manual upkeep.

The skirted base design eliminates exposed trapways where grime can collect, and the smooth ceramic surface resists residue thanks to TOTO’s high-performance CEFIONTECT® glaze. Together, these technologies simplify cleaning and improve hygiene with minimal effort.

1 2

Clean Every Time

Instead of a wireless remote, the WASHLET S2 uses an integrated side-arm control panel conveniently mounted on the right side of the seat. The panel provides easy, tactile access to every function—including adjusting water temperature, pressure, and nozzle position, as well as selecting front or rear cleansing and oscillating or pulsating spray modes.

Seat temperature, air dryer strength, and energy-saving options are also accessible directly from the panel. This intuitive design keeps controls within reach and removes the need for a separate remote, offering an easy-to-use interface suitable for all ages and abilities.

Sleek Integration

Whether in one-piece or two-piece form, the Aquia IV WASHLET+ S2 provides a perfect balance of form, function, and eco-conscious design. Its soft edges and minimal silhouette complement any bathroom style, while dual-flush operation and energy-efficient heating support sustainable living.

The Aquia IV WASHLET+ S2 is the ideal solution for homeowners seeking a durable, attractive, and low-maintenance toilet system that combines modern comfort with classic TOTO reliability.

TOTO Aquia IV Washlet+ S2 Features

Comfort & Convenience

Heated Seat: Adjustable temperature keeps you comfortable all year round.
Warm Air Dryer: Gentle drying function offers a hands-free experience.
Automatic Deodorizer: Built-in air filter helps eliminate bathroom odors.
Nightlight: Soft LED illumination enhances visibility at night.
SoftClose Seat & Lid: Prevents loud slamming and adds a premium touch.

Advanced Hygiene

Instant Warm Water: Tankless heating system delivers continuous warm water cleansing.
Dual Spray Modes: Choose between oscillating and pulsating settings for optimal comfort.
Front & Rear Wash: Separate spray positions for complete personal cleansing.
Adjustable Nozzle: Easily change spray position for precise coverage.
Pressure & Temperature Control: Fine-tune both water strength and warmth from the side panel.

Personalization & Control

EWATER+® Nozzle Cleaning: Sanitizes wand automatically before and after each use.
PREMIST® Bowl Spray: Light mist coats the bowl before use to prevent waste sticking.
Quick-Release Seat: Easily detaches for thorough cleaning.
Skirted Design: Smooth base eliminates hard-to-clean areas.
Antimicrobial Materials: Reduce bacterial growth on key touchpoints.

Smart Performance

One- or Two-Piece Options: Choose between a seamless one-piece or flexible two-piece setup.
Top Push-Button Dual Flush: Convenient buttons on the tank lid for 1.28 or 0.9 GPF flushing.
10", 12", or 14" Rough-In: Compatible with multiple rough-in sizes via UniFit adapters.
Universal Height: Comfortable seating height for most adults.
WASHLET+ Integration: Concealed power and water lines preserve a polished aesthetic.

Elegant & Thoughtful Design

Dual Flush (1.28 & 0.9 GPF): Choose between light or full flush to save water.
Tankless Water Heating: Heats only when needed for improved energy efficiency.
Warm Air Dryer: Reduces paper waste for eco-friendly use.
Energy Saver Mode: Lowers power consumption when not in use.
CEFIONTECT® Glaze: Smooth ceramic resists residue for fewer cleanings.

TOTO Aquia IV Washlet+ S2 Installation

TOTO Washlet+ systems install like a classic toilet. There are only a few additional factors to consider:

Check the size of the rough-in in your bathroom (the distance from the finished wall behind your toilet to the center of the toilet drainpipe or flange). All Washlet+ models are designed for a 12" rough-in, but if you have another size, most models have adapters available.
Access to a standard GFCI electrical outlet is required for your Washlet to function.
Your Washlet will utilize the same water connection that fills the toilet's tank via an included T-valve.
See the video guide below for installation of your new Washlet+ system!