TOTO Supreme  II WASHLET+ C100 One-Piece Toilet and Bidet - 1.28 GPF

TOTO Supreme II WASHLET+ C100 One-Piece Toilet and Bidet - 1.28 GPF

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TOTO Supreme  II WASHLET+ C100 One-Piece Toilet and Bidet - 1.28 GPF

The TOTO Supreme II Washlet+ C100 One-Piece Toilet and Bidet system features an aesthetically pleasing silhouette with all the wash and dry features you need to take your bathroom experience from mundane to marvelous. TOTO’s Supreme II toilet is specially engineered to hide the water and electrical connections of the C100 WASHLET+ included in your purchase of this system (keep in mind that this particular C100 WASHLET is only compatible with TOTO WASHLET+ toilets like the Supreme II). The Supreme II has a powerful single flush that employs TOTO’s famous Tornado Flush System, along with 1.28 gallons of water, to sweep waste away. PREMIST, which coats the bowl in a thin film of water, and the bowl’s CeFiONtect glaze discourage residue from sticking to the bowl for a cleaner overall unit.

 The C100 WASHLET+ bidet seat provides all the basic wash and dry features you need for a comfortable cleansing experience. The front, rear and soft rear wash modes ensure adequate cleaning no matter the situation, and the oscillating spray option causes the bidet’s nozzle to move back and forth for even greater wash coverage and a soothing overall effect. Users can easily adjust the seat temperature, wand position, wash water temperature, and water pressure via buttons on the side arm control panel attached to the seat, and the C100 WASHLET+ even makes it possible to reduce or eliminate toilet paper usage thanks to the built-in warm air dryer with adjustable temperature controls. The automatic deodorizer eliminates unwanted odors, and the energy saving mode helps conserve electricity. Do note that this bidet seat uses a tank system to heat the wash water, meaning it keeps a finite amount of warm water on hand at any given time. Once the warm water in the tank is used up, which can happen if the seat is used several times in a row or if you run an extra-long wash, the bidet seat will switch to using cool water until the tank can refill and reheat.

If you’re looking for a one-piece toilet and bidet seat featuring a classic look and all the basic features you need for an elevated bathroom experience, you’ll want to seriously consider the TOTO Supreme II Washlet+ C100 One-Piece Toilet and Bidet system.



  • Purchase includes toilet and WASHLET
  • Powerful Tornado Flush system
  • Efficient single flush (1.28 GPF) conserves water
  • CeFiONtect glaze and PREMIST feature stop residue from sticking to bowl
  • Universal height and ADA compliant
  • WASHLET features a dual action spray with three wash modes: front, rear, soft rear
  • Adjustable wand position, water pressure and water temperature
  • Oscillating spray option
  • Soothing, aerated wash stream provides superior relaxation and cleansing 
  • Tank water heating system provides limited warm water
  • Warm air dryer with five temperature settings
  • Adjustable heated seat
  • Automatic deodorizer
  • Energy saving mode
  • Side arm control panel
  • Comes in white
  • Elongated bowl and seat
  • 12” rough-in
  • 1 year warranty


Additional Information

Model Number(s):

Supreme II WASHLET+ C100 One-Piece Toilet and Bidet System (1.28 GPF): MW6342034CEFG#01

Supreme II with CeFiONtect Glaze: CST634CEFGT20

TOTO C100 WASHLET+ Bidet Seat: SW2034T20 (only fits TOTO WASHLET+ toilets)



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The TOTO Washlet+ comes with a 1 year full warranty for residential use, and a 1 year full warranty for units installed for commercial use.


We cover tax at the prices quoted, so no need to worry about a surprise tax fee added on during checkout, we've got you covered!


We also pay for shipping, so the price you see is the price you get!

TOTO Washlet+ units ship via freight, and ships on a pallet.  The shipper will call you when the unit is in your area and ready to be delivered. This allows you to schedule delivery, so you don't need to worry about it being delivered when you're not home.  Because toilet bowls are fragile, we recommend looking over the unit quickly when it arrives.  It's very rare for anything to be cracked, but it has happened.  We see about a 5% break rate, meaning about 1 in 20 have damage. When the unit arrives, look it over before signing for it. If anything is broken, don't sign for the package. Instead, take pictures and email them to or text them to 248-974-4030, and refuse delivery. This allows us to file a claim with the shipper and get another one out to you within 24 hours.


Because of the fragile nature of toilet bowls, returning one is a tricky process.  Should a return be required on your Washlet+ unit, TOTO requires that it be shipped back via freight, and shipped back on a pallet.  TOTO also charges a restocking fee of 30%, and will not cover shipping either way. TOTO also requires that the unit come back in 100% brand new condition. If the unit comes back in any condition other than 100% brand new, resellable condition, no refund of any sort will be issued.

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