TOTO
TOTO Aquia IV WASHLET+ One-Piece Dual Flush 1.28 and 0.9 GPF Universal Height Toilet MS646124CEMFGN#12
TOTO Aquia IV WASHLET+ One-Piece Dual Flush 1.28 and 0.9 GPF Universal Height Toilet MS646124CEMFGN#12
Model: MS646124CEMFGN#12
- Regular price
- Price: $1,226.00
- Regular price
- List Price: $1,751.00
- Sale price
- Price: $1,226.00
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PRODUCT DESCRIPTION
NOTE: This item may only be purchased in combination with a Bidet Toilet Seat from this store. Please feel free to contact us with any questions.
The Aquia IV One-Piece Elongated Dual Flush 1.28 and 0.9 GPF Universal Height WASHLET®+ Ready Toilet is the epitome of modern form and function. The skirted design conceals the trapway, which enhances the elegant look of the toilet and adds an additional level of sophistication.
The one-piece design is not only aesthetically pleasing, but also offers the benefit of being easier to clean versus a two-piece toilet. By removing the gap between the tank and bowl, we eliminate the hiding place for dirt and debris. An additional benefit of the one-piece toilet is that there is no threat of leaks from bolts or gaskets that can occur in two-piece toilets.
The Aquia IV features TOTO’s DYNAMAX™ TORNADO FLUSH®, utilizing a 360 degree cleaning power to reach every part of the bowl. The DYNAMAX TORNADO FLUSH helps to reduce the frequency of toilet cleanings, minimizing the usage of water, harsh chemicals, and time required for cleaning and 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 0.9 GPF rinse or 1.28 GPF for tougher jobs. This version of the Aquia IV offers TOTO T40 WASHLET+ compatibility for when you are ready to upgrade. WASHLET®+ toilets feature a channel on the bowl surface to help conceal your WASHLET+ supply line and power cord for seamless integration.
The newly redesigned lid style resides flush with the toilet bowl, providing a streamline look and giving the impression of an integrated system. The minimalistic display provides a more subdued appearance to your WASHLET. Skirted Design toilets also minimize the need to reach behind the bowl to clean 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 TOTO Aquia IV meets the standards for EPA WaterSense®, and California’s CEC and CALGreen requirements. 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.
Includes a SoftClose® toilet seat (#SS124). Additional items needed for installation and use must be purchased separately: wax ring, toilet mounting bolts, and water supply lines.
FEATURES:
- DYNAMAX TORNADO FLUSH utilizes 360 degree cleaning power to reach every part of the bowl
- Highly efficient dual flush system promotes water conservation
- Bowl design reduces water flow resistance and turbulence, resulting in a quieter flush
- Completely skirted design for a sleek and understated look
- Elongated one-piece toilet, easier to maintain versus a two-piece toilet
- TOTO WASHLET+ upgrade compatibility: designed to work with a T40 WASHLET+ bidet seat for seamless integration
- Lid-top chrome dual flush push button - Select 1.28 or 0.9 GPF
- Universal Height allows for more comfort across a broader range of individuals
- WaterSense®, CALGreen, and CEC compliant
- SoftClose seat included- No more slammed lids
- 12" Rough-in
- May be adapted for 10" or 14" rough-in with optional TOTO parts: TSU48.10 or TSU48.14 (sold separately)
- Included parts: TOTO SS124 SoftClose seat, tank to bowl gasket, tank to bowl hardware, and toilet bolt caps: Purchased separately: wax ring, toilet mounting bolts, and water supply lines
Warranty: Because we are a TOTO Authorized Dealer, you are entitled to their standard 1 Year Limited Warranty.
There are plenty of resources to help you pick the right bidet, install it and maintain it for years to come. Remember, you can always reach out to us with any questions.

Excellent communication, follow-through, and speedy delivery. Owner was incredibly helpful with locating correct model. Fair pricing. I’d shop here again!
Let customers speak for us
from 157 reviewsSeat is very comfortable and we use at least 50% less toilet paper.
Enjoying the seat very much.
To Toto bidet is great. Easy to follow instructions, and great service
My order was well packaged, delivered in a reasonable amount of time, and the price was right. I really needed a bidet that was not tankless because the power draw of a tankless model caused bathroom lights to flicker with every use :(. The smaller power demand of the model I purchased makes a big difference. Too bad TOTO has stopped making tankless models.
Our experience has been great. We were about to move to our new house and I ordered two sets of electric japanese bidets from EverFlowBidets because they offered the best deals and they had a very good reputation. I panicked when i unpacked the package and found that one piece (tank) was broken- seems that the shipper didnt handle the fragile package with enough care. I gave customer service a call and they were extremely understanding and helpful. I was able to get a new piece overnight and free of charge. Much appreciated!
I did a lot of research, settled on this one, and I’m glad I did. Had it about 6 months now- easy install, still tightly attached, no issues with operation at all. Delivered on time, too. Very happy with it!
The ToTo Washlet exceeds expectations. Reasonably priced, delivered as promised, clear directions, installs easily, and works effortlessly.
This bidet has made regular toilets a disappointment. It was super easy to install too with clear instructions and a good manual that talks about how to clean it safely since electronics are involved. Cleaning is also really easy. If you’re someone who has IBS (which was our households motivator for purchasing it), it’s helpful for flare ups and making them less awful by allowing easier cleanup. A side note: the heated seat is something you quickly get used to that you’ll notice the absence of immediately if you then go use a normal toilet.
The only thing we would’ve changed is it probably would’ve been better to get an elongated bidet and switch out our toilet completely. If you’re a bigger person (even from just sheer size), the elongated would probably be better as the round seat is noticeably smaller than a normal toilet’s round toilet seat.
Good delivery and working well
Our Toto KS6 was easy for me to install and provides all of the hoped for comfort and hygienic benefits. Toto remains the standard in washlets.
The company was a pleasure to work with. I wasn't sure I was buying the right product, so I dropped Customer Service an email. Imagine my surprise when the owner of the company called me to answer my question! I received my new bidet, though I'm waiting on an electrician to install an outlet in the bathroom so I can install the bidet. I'll update this review once the product is in. Will absolutely buy from this company again!
The transaction was smooth and customer service was beyond exceptional. Will be making another purchase again in the near future!
We haven’t installed it yet as this is a new build. No issues with receiving and package very well.
I have not had such good customer service, even in a face-to-face store. Already have my next order planned for when I do the other bathroom. Neal was an absolute delight to work with. Not just anyone, the owner of the company
The company said 2 days and I thought "no way". Was delivered in two days and my husband loves it too!
I'd purchased a bidet from another company & started second-guessing my purchase. While reading online reviews I ran across a stellar review about Neal @ EverFlow Bidet. I gave Neal a call. He was magnificent. My husband has Parkinsons with balance issues, along with incontinence. We have support rails on all 3 of our toilets. Our concern - could we use our type of support rail on the new bidet? Neal asked me to send him a photo of our support rails so there was no confusion about the type we had. The answer was no. However, Neal researched on-line & found another portable, collapsible support rail that might work & e-mailed me options. In follow-up conversations, Neal worked with me to suggest different bidet styles & reviewed the pros & cons of each one. We finally made our purchase knowing we could have a bidet without giving up support rails. The bidet arrived. Neal had mentioned he pays extra for packaging to ensure the bidet arrives at our door safe & sound. That comment was not an exaggeration. It took our plumber 2 hours to remove old toilet & install new bidet toilet combo. The manual from ToTo was easy to read with clear graphics. The product is quality to match Neal's customer service.