Best Flushing Toilets
Toto Aquia IV

Washlet Toilet Reviews: Toto Aquia IV Water-Saving Toilet Features

Toto Aquia IVAre you considering upgrading your bathroom with one of the most comfortable and luxurious modern toilets on the market? Take a look at some of the best Toto Aquia IV toilets that will not only bring comfort to your bathroom but as well as maintain cleanliness. The Toto Aquia IV toilet series is the 4th generation of the Toto Aquia toilet series. The toilet comes with-

Premist function: Makes the surface wet before use
Ewater+ function: Cleans both wand and bowl
Cefiontect glaze: prevents particles from sticking
EPA WaterSense: For water efficiency
CALGreen: For health and safety
ADA Height: Ideal for all

The Toto Aquia toilet is one of the most prevalent toilet series on the market, and it boasts a lot of outstanding toilet models. The Toilets that we’ve chosen from the Toto Aquia IV are some of the best, with exceptional functions and features. They are stylish, comfortable, water-efficient, and convenient.

Related: Toto Aquia II Review

2 Top Rated Toto Aquia IV Toilets Comparison Chart

Toto Aquia IV has 2 models. One is Washlet, with a maximum of 1.28 gallons per flush, and the other is Washlet+, with a maximum of 1.0 GPF.

ImagesToto Aquia IV ToiletsWater ConsumptionFlush TypePrice Idea
Check PriceTOTO MS446124CEMG#01 Aquia IV WASHLET Elongated Dual Flush CeFiONtect, White-MS446124CEMG Two-Piece Toilet, Cotton White
Read Review
0.8 GPF and 1.28 GPFDynamax Tornado flushMedium
Check PriceTOTO MW4463056CUMG#01 WASHLET+ Aquia IV 1G Two-Piece Elongated Dual Flush Toilet with S550e Electric Bidet Seat, Cotton White
Read Review
1.0 GPF and 0.8 GPFDynamax Tornado flushHigh

Summary of content

Toto Aquia IV Washlet Dual Flush Toilet Review

The Toto MS446124 CEMG#01 Aquia IV washlet features a Dynamax tornado flushing system that uses 360-degree cleaning power to rinse the toilet bowl efficiently. In the process, it either utilizes a full flush of 1.28 gallons of water per flush or a partial flush of 0.8 GPF. Therefore, you not only get to clear waste but as well as save water. Besides, this dual flush toilet stays cleaner for longer with the Cefiontect glaze. The Cefiontect surface prevents particles or debris from sticking to the toilet.

Technical Specifications of the TOTO Aquia IV WASHLET (Model: MS446124 CEMG#01)

Type: 2-piece
Outlet Location: Floor outlet
Hardware Finish: Polished
Bowl Height with Seat: 17-in
Bowl Height without Seat: 15-1/2-in
Maximum Flush Rate: 1.28 GPF (4.85 LPF)
Minimum Flush Rate: 0.8 GPF
Trapway Size: 2-1/8-in
Material: Vitreous china
Flush Lever Location: Top center
Flush Technology: Gravity-fed
Bowl Shape: Elongated
Warranty: One Year Warranty
Dimensions: 27.6 x 15.6 x 29.6 inches
Weight: 119 pounds
Manufacturer Color/Finish: Cotton White
Price: Toto Aquia IV reviewCheck Today’s Price on Amazon

Powerful flush and attractive outlook

Additionally, this toilet comes with a skirted design that beautifies your bathroom and makes cleaning to be very simple. So, you will reduce the number of times that you’ve to clean the bathroom. Even though the Dynamax dual flush mechanism is powerful, the toilet is still quiet, and this is thanks to the bowl design that provides water flow resistance and turbulence.

Equipped with an elongated bowl design, you will be comfortable sitting on the toilet regardless of whether you’re a plus-size individual or not. Additionally, the manufacturer has included a soft-close seat so that you won’t experience more slamming.

Meets all the Certificates

With this toilet, you will save water, and that’s why it is certified by EPA WaterSense, CALGreen, and CEC. So, you can relax knowing that you’re purchasing a quality toilet for your bathroom. What’s more, you can install a washlet bidet seat, as this toilet comes with that option.

Pros of the Toto Aquia IV WASHLET Elongated Dual Flush

  • Straightforward to install
  • Durable construction for long-lastingness
  • The dual flush system reduces water usage
  • Great comfort with the elongated bowl design
  • The skirted design makes cleaning easy
  • Dynamax tornado flush toilet rinses the whole bowl
  • Cefiontect glaze prevents particles from sticking to the toilet
  • One-year limited warranty

What are the user complaints?

  • Many users have complained that particles stick on the toilet.
  • The flush button is not very durable; thus, you may have to replace it after some time of use.

Toto Aquia IV Washlet+ 1G Two-Piece Toilet Review

Toto creates some of the most innovative smart toilets on the market. The Toto MM4463056 CUMG#01 Aquia IV, a 1-gallon flush toilet, is a true testament to this. The two-piece toilet comes with a skirted design for cleaning and giving your bathroom a modern appeal. It is simple to install, but you will have to purchase things like toilet mounting bolts, wax rings, and toilet water supply lines.

Modern Washlet+ Toilet

If you want to change the look of your bathroom, then installing this toilet will be a great option. It has a skirted design that gives it a stylish and modern look. On top of that, the bidet seat makes using the toilet to be a memorable experience. With the elongated bowl design, different users won’t have issues sitting correctly on the toilet.

The toilet works automatically by opening or closing the lid as you approach and leave the toilet respectively. The heated seat makes it possible to sit on the toilet, even in cold environments. You don’t have to use tissue paper after relieving yourself as it features a cleaning wand with warm water and an air dryer. What’s even more surprising is the air deodorizer that keeps your toilet smelling fresh after every use.

Technical Specifications of the TOTO Aquia IV WASHLET+ (Model: MM4463056 CUMG#01)

Features TOTO Aquia IV Washlet+
Type: Two-piece design
Outlet Location: Floor outlet
Hardware Finish: Polished
Handle/Lever Placement: Center
Included: Chrome push-button
Maximum Flush Rate: 1.0 GPF (4.85 LPF)
Maximum Flush Rate: 0.8 gallons per flush
Trapway Size: 2-1/8-in
Material: Vitreous china
Style: With S550e WASHLET+
Flush Technology: Gravity-fed
Bowl Shape: Elongated
Warranty: One-Year Limited Warranty
Dimensions: 27.6 x 15.6 x 29.6 inches
Weight: 130 pounds
Manufacturer Color/Finish: Cotton White
Price: Toto MM4463056 Aquia IV Washlet+ 1G Two-Piece ToiletCheck Today’s Price on Amazon


Easy to maintain

Cleaning and maintaining this 1-gallon Washlet is easy and fun. It has a premist function that sprays the toilet before use, and the Ewater+ function cleans both the bowl and wand after use. Together with the Cefiontect glaze that prevents particles from adhering to the toilet, your toilet will remain clean most of the time, and you won’t have to use abrasive cleaners to keep your toilet clean.

Related: Toto G400 Review [Washlet Bidet Seat Toilet]

The Flushing system is super quiet and water-efficient

Additionally, you will love the powerful and quiet Dynamax tornado flushing system. The dual flush technology allows you to pick either a partial flush for liquids or a full flush for solids. The partial flush uses 0.8 GPF, and the full flush uses 1.0 GPF. So, this is an ultra-efficient toilet that meets the EPA WaterSense and CALGreen standards. You can find the flush button on top of the tank. Also, you can choose from different colors, including colonial white, cotton white, bone, and white Sedona beige.

Pros of the Toto WASHLET+ Aquia IV 1G Two-Piece

  • The Toto Aquia toilet model has an auto-open and close lid
  • Heated toilet seat height for comfort
  • Powerful and quiet tornado flush system
  • Ewater+ keeps the bowl clean after every use
  • The toilet features an LED nightlight for easy identification of the toilet in the dark
  • Cefiontect glaze prohibits particles from sticking to the toilet
  • Ultra-high-efficiency flush toilets
  • Premist sprays toilet to prevent waste buildup
  • Elegant and luxurious appearance

Negative reviews from the users:

  • Quite expensive though it is not a one-piece toilet
  • It turns to be a regular toilet when there is no power

Comparison Table: Toto Aquia iv vs Nexus vs Drake II Toilet

Features Toto Aquia iv Toto Nexus Toto Drake II
Design: Two Piece Two Piece Two Piece
Product Weight: 81 lbs 121 lbs 57.3 lbs
Gallons Per Flush: 0.9, 1.28 1.28 1.28
Bowl Shape: Elongated Elongated Elongated
Flush Type: Gravity Flush Gravity Flush Gravity Flush
Flush Technology: Dynamax Tornado Flush Tornado Flush Double Cyclone
Trip Lever Position: Top Left Left
Chair Height: No No Yes
Seat Included: Yes Yes No
Concealed Trapway: Yes Yes No
Price: Check Price Check Price Check Price


The Toto Aquia IV toilet series features some of the most beautifully designed toilets with a broad range of functions. Whatever Toto Aquia IV toilet that you pick from our list, you will get an elegant and luxurious toilet that will change the look of your bathroom.

With three Toto Aquia IV toilets to pick from, it will depend on your needs and budget. You can choose a 1.28-gallon or 1-gallon toilet, and these toilets have the dual flush option, which is best for water-saving. Also, the toilet is easy to clean with its CeFIONtect (SanaGloss) finish. I hope this Toto Aquia IV review article will help a lot in making the right decision.


What is the meaning of the ADA-compliant height?

Also referred to as comfort height, chair height, or universal height, this is the height of the toilet from the floor to the top of the toilet seat. Typically, the height range is between 17 inches and to 19-inches. It is different from a standard height which usually has a height of 15 inches to 16 inches or a tall height of 19 inches plus.

ADA-compliant toilets are in line with the regulations of the Americans with Disabilities Act and are needed for public restrooms. These toilets feature the same height as a chair; thus, they are comfortable for everyone, from the disabled to the elderly.

What does the Washlet bidet seat mean?

This is a trademark name used by Toto toilets to refer to electric toilet seats with a water spray function, which was named from the reverse of the word “Let Wash.” So, a washlet is a toilet seat with a washing function (s). With this toilet seat, you don’t have to clean under your nether area as it has a cleaning wand that does so. All you’ve to do is to press a remote and let it wash you.

Do I have to check my toilet supply line before buying a skirted toilet?

Yes, you do. This is because some skirted toilets cover the back of the toilet, with the toilet skirt reaching extremely close to the back wall. This can become an obstacle to the supply line of the toilet. And if that’s the case, then it will cost you to have a professional plumber change the supply line of your toilet. For this reason, you should always refer to the toilet’s spec sheet to find out if the supply line matches your expectations.


Hi, I am Jose S. Franz. Currently, I am working as a professional plumber, and our team offers various plumbing services at an affordable price. After my college education, I completed a vocational certification course in plumbing systems and worked with several construction companies. Since then, I have fixed lots of different toilet models, from older to the latest versions. So I have more than 22 years of experience installing plumbing systems and toilets in both residential and commercial buildings.

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