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TOTO Aquia IV WASHLET+ S2 Two-Piece Toilet - White toilet with seat on a white background

TOTO Aquia IV WASHLET+ S2 Two-Piece Toilet

by TOTO
SKU MW4463346CEMGN#01
$1,739.00
$1,241.00
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TOTO Aquia IV Washlet+ S2 Two-Piece

  • DYNAMAX Tornado Flush: 360-degree cleaning power reaches every part of the bowl with dual flush options (1.28 GPF/0.9 GPF)
  • WASHLET+ S2 Bidet Seat Included: Integrated bidet seat with front and rear warm water cleansing and adjustable temperature and pressure
  • CEFIONTECT Glaze: Smooth ceramic glaze keeps the bowl cleaner and prevents waste from sticking
  • EWATER+ Self-Cleaning: Electrolyzed water mists the wand before and after each use
  • Heated Seat: Warm seat with adjustable temperature control for added comfort
  • Warm Air Dryer: Built-in dryer for a hands-free finish
  • Skirted Design: Smooth concealed trapway for a modern look that's easy to keep clean
TOTO Aquia IV WASHLET+ S2 Two-Piece Toilet - Top view on a white background
TOTO Aquia IV WASHLET+ S2 Two-Piece Toilet - Washlet+ toilet technology display with TOTO branding on a dark background

Auto-Cleaning Wand and Bowl

The EWATER+ system automatically cleans the wand and bowl after each use, keeping hygiene high with minimal effort. Ideal for those browsing Toto Washlets or Toto Bidets.

TOTO Aquia IV WASHLET+ S2 Two-Piece Toilet - Washlet toilet seat with features highlighted on a blue background

PREMIST and Easy-Clean Glaze

PREMIST sprays the bowl before each use, and the CEFIONTECT glaze prevents waste buildup and keeps surfaces smooth. Commonly found in Toto Two Piece Toilets.

TOTO Aquia IV WASHLET+ S2 Two-Piece Toilet - White toilet with blue arrows indicating cleaning power on a dark background, featuring Dynamax Tornado Flush

Efficient Tornado Flush

The DYNAMAX TORNADO FLUSH delivers a powerful, water-saving clean for the entire bowl. A standard feature in Toto Dual Flush Toilets and other Toto Aquia IV models.

TOTO Aquia IV WASHLET+ S2 Two-Piece Toilet - Washlet toilet with night light feature on a black background

Comfort and Convenience

Universal height, elongated bowl, heated seat, warm water cleansing, and a soft-close seat make daily use comfortable and convenient.

TOTO Aquia IV WASHLET+ S2 Two-Piece Toilet - 1.28 GPF/0.9 GPF

The TOTO Aquia IV WASHLET+ S2 is a two-piece toilet system built for high efficiency and hygiene. It features an ultra-efficient DYNAMAX TORNADO FLUSH dual flush system and a skirted design with CEFIONTECT glaze for a modern look that's easy to keep clean.

Perfect for a quiet, modern bathroom remodel focused on water efficiency and advanced personal cleanliness.

TOTO Aquia IV WASHLET+ S2 Two-Piece Toilet - 1.28 GPF/0.9 GPF Specifications and Features

  • High-tech Electronic Bidet Seat and Toilet Combination
  • Tilet and Washlet included
  • Concealed supply connection for seamless installation
  • DYNAMAX TORNADO FLUSH utilizes 360° cleaning power to reach every part of the bowl
  • CEFIONTECT ceramic glaze
  • Minimizes waste from sticking to porous ceramic surfaces
  • Completely skirted design for a sleek and understated look 
  • Easy to clean
  • Non-clog 2.5" trapway with clear glaze coating
  • Quiet Flush
  • Elongated front bowl and tank set
  • SoftClose Seat
  • Dual Flush
  • 12" Rough-in (optional 10" & 14" rough-in)
  • Elongated front WASHLET toilet seat with cover
  • EWATER+ auto cleans the wand
  • PREMIST of bowl before use
  • Convenient Arm Control Panel
  • Front and rear warm water cleansing with adjustable temperature and pressure control
  • Heated seat with temperature control
  • Warm Air Dryer
  • Quick release feature
  • Chrome push-button included

TOTO Aquia IV WASHLET+ S2 Two-Piece Toilet Compatibility

The TOTO Aquia IV WASHLET+ S2 is a two-piece elongated toilet with an integrated smart bidet seat. Confirm these four things before ordering:

  • Rough-in measurement: 12 inches standard. 10" and 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 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, lower the bowl onto it, and hand-tighten the bolts evenly.
  4. Attach the tank. Bolt the tank to the bowl using the rubber gasket and bolts provided.
  5. Connect and test. Reconnect the supply line, restore water, and plug the seat into the GFCI outlet.

TOTO Aquia IV WASHLET+ S2 Two-Piece Toilet Downloads

TOTO Aquia IV WASHLET+ S2 Installation & Owner's Manual

TOTO Aquia IV WASHLET+ S2 Spec Sheet

Frequently Asked Questions

  • Yes, the TOTO Aquia IV is a good toilet because it flushes well, saves water, and has built-in bidet features that keep it clean and comfortable.

  • The difference is that Washlet+ comes already matched to a specific toilet for a seamless, tidy look. A regular WASHLET can fit many toilets, but cords and hoses may show.

  • The TOTO Aquia IV features a powerful tornado flush, dual flush options, self-cleaning wand (EWATER+), PREMIST spray, quiet flush, skirted design, and a soft-close seat.

  • The TOTO Aquia IV is made of ceramic with a smooth CEFIONTECT glaze that keeps the bowl clean and prevents waste from sticking.

  • 1.28 GPF is better for saving water while still giving a strong flush. 1.6 GPF uses more water but feels a bit stronger. Most people choose 1.28 GPF to save water.