Click to check our new top seller

TOTO Aquia IV WASHLET+ S500e Universal Height One-Piece Toilet - 1.28 GPF and 0.8 GPF

TOTO Aquia IV WASHLET+ S500e Universal Height One-Piece Toilet - 1.28 GPF and 0.8 GPF

(No reviews yet) Write a Review
Free Shipping


Out of stock



Too Many Options?

We can help


Complete this short, easy quiz for an instant recommendation

Get your recommendation today!

TOTO Aquia IV WASHLET+ S500e Universal Height One-Piece Toilet - 1.28 GPF and 0.8 GPF

The Aquia IV WASHLET+ S500e Universal Height One Piece toilet and bidet by TOTO combines efficiency, accessibility and performance in one great unit. While the cords and hoses of most bidet seats are visible, the toilet and bidet seat included in this WASHLET+ system are perfectly designed to keep the water and electrical connections out of view for a streamlined look. Keep in mind, however, that the items in this WASHLET+ system are only compatible with other WASHLET+ products.

The high-quality, one-piece toilet included in this TOTO Aquia IV Universal Height One-Piece Toilet system features an elegant, skirted design and comes equipped with TOTO’s powerful, yet quiet and efficient, DynaMax Tornado Flush system. Two flush options (1.28 GPF or 0.8 GPF) provide excellent water efficiency, and the ceramic bowl is coated with TOTO’s CeFiONtect glaze that helps keep residue from sticking. The toilet's one-piece design offers a sleek look and its easy-to-operate, contemporary push-button flush mechanism enhances the toilet’s overall style factor. In addition, the TOTO Aquia IV One-Piece Toilet has a universal height, making it accessible to a wider array of users than standard height toilets.

The S500e bidet seat included in this WASHLET+ system provides four wash modes (rear, rear soft, front and wide front), oscillating and pulsating spray options, an instant water heater that generates unlimited warm wash water, an adjustable heated seat, and a warm air dryer with adjustable temperature settings for maximum comfort. Furthermore, the seat's water temperature and pressure are both adjustable, and the wash stream is aerated for increased cleansing power. A built-in air deodorizer eliminates bathroom odors before they can become a nuisance, and the nightlight makes it both safer and easier to navigate the restroom in low light. The seat is operated via remote control, which can be pre-programmed with the preferred settings of up to two users so that you don’t have to select your favorite wash options every time. Finally, the S500e comes with TOTO’s PREMIST feature, which coats the bowl with a thin film of water prior to use to discourage waste from sticking. As an additional hygiene measure, the S500e’s nozzles self-sterilize after each use with EWATER+ (electrolyzed water) so you can rest easy knowing that your unit is staying fresh and clean. Last but not least, this system is available in both non-auto flushing and auto-flushing models, the latter of which flushes the toilet when a user stands up and moves away from the unit.

With its gorgeous design and luxury features, the TOTO Aquia IV Universal Height One-Piece Toilet and bidet system is the perfect way to transform your bathroom from ordinary to extraordinary!



  • Purchase includes one-piece toilet and WASHLET
  • Elegant, skirted toilet is easy to keep clean
  • Ultra-powerful DynaMax Tornado Flush system with chrome push button
  • Quiet, high-efficiency dual flush (1.28 GPF or 0.8 GPF)
  • CeFiONtect glaze and PREMIST feature stop residue from sticking to bowl
  • 2.5” trapway with clear glaze helps prevent clogs
  • Universal height for increased accessibility
  • WASHLET features a dual action spray with four wash modes
  • Oscillating and pulsating spray options
  • Soothing, aerated wash stream provides superior relaxation and cleansing 
  • Instant water heating system ensures unlimited warm wash water
  • Adjustable water temperature and pressure
  • Warm air dryer with five temperature settings
  • Adjustable heated seat with quick release feature for easy cleaning
  • Automatic deodorizer
  • Built in nightlight
  • Energy saving mode
  • Two programmable user presets
  • EWATER+ automatically sterilizes the bowl and wand with each use
  • Wireless remote control
  • Available in auto-flushing and non-auto-flushing models
  • Comes in white
  • Elongated bowl and seat
  • 12” rough-in (10” and 14” rough-in components can be purchased separately)
  • 1 year warranty


Additional Information

Model Number(s)

TOTO Aquia IV WASHLET+ S550e Universal Height One-Piece Toilet, 1.28 GPF and 0.8 GPF in CottonWhite – MW6463046CEMFG(#01)

TOTO Aquia IV WASHLET+ S550e Universal Height One-Piece Toilet, 1.28 GPF and 0.8 GPF in CottonWhite with Auto Flushing – MW6463046CEMFGA(#01)

TOTO Elongated Bowl with CeFiONtect– CST646CEMFGAT40

TOTO WASHLET+ S500e with Contemporary Design, non Auto Flush Compatible – SW3046T40

TOTO WASHLET+ S500e with Contemporary Design, Auto Flush Compatible – SW3046AT40

TOTO Auto Flush Kit – THU765

TOTO WASHLET Adapter – 9AU321-A

Optional Unifit 10” Rough-In (Sold Separately) – TSU08W.10

Optional Unifit 14” Rough-In (Sold Separately) – TSU08W.14

Push Button Assembly in Cotton White (Sold Separately) – THU735#01-A

Push Button Assembly in Polished Nickel (Sold Separately) – THU735#PN-A

Push Button Assembly (Sold Separately) – THU735#BN-A


Write a Review
This product hasn't received any reviews yet. Be the first to review this product!

Looking for the best deal around?

You've found it! Request a price quote below, and if you've seen it for less somewhere share details with us so we can beat it!

Have a question or want a price quote instantly?  Call or text us at: 248-974-4030


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.

Related Products

Customers Also Viewed

Get Best Price

Looking for a great deal and custom pricing?  We have you covered!

We list products at the lowest price we are allowed to, based on the agreements we have with our manufacturers. But, we're allowed to offer additional discounts if you reach out! Request better pricing by:

  • Calling or texting us: 248-974-4030
  • Live chatting with us
  • Filling out our Best Price Request Form