Product Features:

  • WASHLET+ bidet seat and toilet, specially designed to conceal the WASHLET water supply and power cord for seamless integration.
  • eWater+ a safe and powerful compound, cleaning the wand and bowl after every use; PREMIST sprays the bowl before each use to help prevent waste from adhering.
  • Front and rear warm water washing with five adjustable temperature and pressure controls.
  • Oscillating or pulsing stream option.
  • Auto open/close lid and heated seat, automatic air deodorizer, nightlight, and warm air dryer with five adjustable temperatures.
  • Tankless, instantaneous water heating means never running out of warm water.
  • Luxury style illuminated touch pad remote with 2 user memory to save preferred settings.
  • DYNAMAX dual flush technology: powerfully and quietly reaches every part of the bowl with 1.28 or 0.8 gallons per flush.
  • Two-piece, skirted design elongated bowl.
  • Universal Height creates greater comfort across a broader range of individuals.
  • WaterSense, CALGreen, and CEC compliant.
  • 12" Rough-in.
  • May be adapted for 10" or 14" rough-in with optional TOTO parts: TSU08W.10 or TSU08W.14 (sold separately).
  • Included parts: WASHLET installation hardware, tank to bowl gasket, tank to bowl hardware, and toilet bolt caps; Purchased separately: wax ring, toilet mounting bolts, and water supply lines.
  • Prop 65 Warning: This product can expose you to chemicals including Lead, which is known to the State of California to cause cancer and birth defects, and other reproductive harm. For more information go to www.P65Warnings.ca.gov.

Specifications & Technical Info

  • Water Consumption (GPF): 1.28/0.8.
  • Battery: Alkaline.
  • Trapway Diameter (in.) 2.5.
  • Mounting Type: Floor Mount/Floor Outlet.
  • Rough-in (in.) 12.
  • Flush Lever: Center.
  • Height (in.) 29.5625.
  • Width (in.) 15.5.
  • Length (in.) 27.5625.
  • Material: Vitreous China.
  • Shape: Elongated.
  • Warranty: Manufacturer One Year Limited.
  • Collection: Aquia.
  • Color/Finish: Cotton White.

Support Literature


TOTO WASHLET+ Aquia IV Dual Flush Toilet with S550E Bidet Seat, Cotton White, SKU: MW4463056CEMFG#01

  • $1,817.90 Save $779

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The TOTO WASHLET+ Kit Aquia IV Two-Piece Elongated Dual Flush 1.28 and 0.8 GPF Toilet and Contemporary WASHLET S550e Bidet Seat is designed to conceal the WASHLET power cord and water supply hose for a seamless installation. The WASHLET S550e features TOTO's technologically advanced eWater+ system which uses electrolyzed water generated by a technologically advanced process, transforming the water into a safe and powerful compound. By misting the bowl after every use, the eWater+ technology helps to keep your toilet bowl clean and hygienic without any extra harsh chemicals. The PREMIST function sprays the bowl before each use to prevent waste buildup, keeping the bowl clean. The TOTO WASHLET S550e is operated by a luxury style illuminated touch pad remote with 2 user memory to save preferred settings. The WASHLET features 5 spray settings, auto open and close lid, heated seat, a nightlight, and instantaneous water heating. The newly redesigned lid style resides flush with the toilet bowl, providing a streamline look and giving the impression of an integrated system. This minimalistic display provides a more subdued appearance to your WASHLET. Skirted design toilets minimize the need to reach behind the bowl to clean in between the nooks and crannies of the exterior trapway. The Universal Height design allows for a more comfortable seat position across a wide range of users. The Aquia IV features TOTO's DYNAMAX TORNADO FLUSH, utilizing a 360 degree cleaning power to reach every part of the bowl. This version of the Aquia IV includes CeFiONtect, a layer of exceptionally smooth glaze that prevents particles from adhering to the ceramic. CeFiONtect, eWater+, and DYNAMAX TORNADO FLUSH create a synergy that optimizes flush performance to reduce the frequency of toilet cleanings, minimizing the usage of water, harsh chemicals, and time required for cleaning. The enhanced design of the Aquia IV inner bowl reduces water flow resistance and turbulence, resulting in a quieter flush. The chrome center-mounted push button that sits atop the tank allows you to proactively conserve water by choosing between a 0.8 GPF rinse or 1.28 GPF for tougher jobs. The Aquia IV comes ready for install into a 12" rough-in, but may be adapted for a 10" or 14" rough-in with the purchase of a separately sold adapter. Additional items needed for installation must be purchased separately: wax ring, toilet mounting bolts, and toilet water supply lines.


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