Toto

TOTO Aquia IV Arc Washlet+ S5 Two-Piece 1.28 & .9 Gpf

SKU: MW4483446CEMFGN#01

Regular price: Price: $1,385.00
Regular price: List Price: $1,978.00
Sale price: Price: $1,385.00
Unit price: per

Rough-In Size 12" 10" 14"

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Clean Curves, Elevated Experience

The TOTO Aquia IV Arc WASHLET+ S5 Two-Piece Toilet combines soft, flowing design with advanced bidet functionality. The Arc version of the Aquia IV features a gently curved tank profile, giving it a more rounded and refined aesthetic compared to the Cube version’s boxier silhouette. Its fully skirted base and concealed WASHLET+ connections keep the overall look clean, modern, and minimal.

With DYNAMAX TORNADO FLUSH® technology, the Arc uses a dual flush system (1.28 & 0.9 GPF) for powerful performance with maximum water savings. The CEFIONTECT® ceramic glaze reduces waste adhesion and promotes a cleaner bowl with every flush.

Thoughtful Features in a Streamlined Form

This toilet is designed for adaptability and ease of installation. It accommodates 10", 12", or 14" rough-ins using TOTO’s UniFit® adapter system, making it an excellent choice for both renovations and new builds. The two-piece construction simplifies handling and installation, while the Universal Height bowl ensures comfort for a wide range of users.

The WASHLET+ S5 bidet seat integrates seamlessly, hiding all cords and supply lines. It includes key features such as continuous warm water cleansing, a heated seat, warm air drying, and an automatic deodorizer—all powered by an efficient tankless heating system.
TOTO’s PREMIST® technology sprays the bowl before every use to reduce residue and staining. After use, EWATER+® cleans the wand inside and out using electrolyzed water—enhancing hygiene without the need for harsh cleaning agents.

The smooth, skirted base eliminates hard-to-clean crevices, and the fully integrated WASHLET+ system removes the clutter of exposed hoses and wires. This design not only enhances aesthetics but also significantly reduces cleaning time.

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Wireless Control, Customized Experience

The WASHLET S5 comes with a sleek, wireless remote control that lets you personalize every aspect of your cleansing experience. Adjust water pressure, temperature, nozzle position, and spray modes with precision. The remote also controls the warm air dryer, seat heater, nightlight, and deodorizer.

Ideal for multi-user households, the S5 allows up to four user presets to be saved and recalled at the touch of a button. The remote can be wall-mounted or kept nearby for convenience and ensures a high level of customization and ease of use.

Refined Design. Flexible Fit.

The Aquia IV Arc WASHLET+ S5 is the ideal choice for those who want soft, modern styling paired with premium smart features. With adaptable rough-in options, water-efficient dual flush performance, and intuitive bidet functionality, it brings comfort, cleanliness, and elegance together in one thoughtful package.

Whether you're upgrading your main bathroom or designing a new space, the Arc delivers reliable TOTO performance with a refined, curved silhouette that works in a variety of interiors.

TOTO Aquia IV Arc Washlet+ S5 Features

Comfort & Convenience

Heated Seat: Customizable warmth ensures comfort in any season.
Warm Air Dryer: Adjustable drying for a hands-free experience.
Automatic Deodorizer: Actively removes odors after every use.
Nightlight: LED bowl light improves visibility in the dark.
SoftClose Seat & Lid: Quiet-closing design prevents slamming and wear.

Advanced Hygiene

Tankless Warm Water: Instant, endless warm water for front and rear cleansing.
Oscillating & Pulsating Spray: Dual-action spray for enhanced cleanliness and comfort.
Adjustable Nozzle: Move spray wand forward or backward to suit your position.
Pressure & Temperature Control: Fully adjustable via wireless remote.
Front & Rear Modes: Separate spray settings for complete hygiene support.

Personalization & Control

EWATER+® Self-Cleaning: Automatically sanitizes the wand before and after every use.
PREMIST® Bowl Spray: Mists the bowl before each use to reduce residue buildup.
Quick-Release Seat: Easily removes for thorough cleaning access.
Skirted Bowl Design: Smooth base minimizes dust and grime collection.
Antibacterial Surfaces: Designed to reduce microbial growth in high-touch areas.

Smart Performance

Arc-Shaped Tank: Gently curved tank creates a softer, modern silhouette.
Two-Piece Configuration: Simplifies installation and transport.
Universal Height: Comfortable seating height for a wide range of users.
10", 12", or 14" Rough-In: Fits multiple setups with optional adapters.
WASHLET+ Integration: Fully concealed water and power lines for a clean finish.

Elegant & Thoughtful Design

Wireless Remote Control: Fully featured, intuitive handheld remote with mount.
4 User Memory Presets: Save and recall preferences for multiple users.
1.28 & 0.9 GPF Dual Flush: Choose the flush that fits the job and saves water.
Energy Saver Mode: Reduces power usage during periods of inactivity.
CEFIONTECT® Glaze: Ultra-smooth ceramic resists waste and bacteria buildup.

TOTO Aquia IV Arc Washlet+ S5 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!