TOTO Aquia IV Toilet Review (Tornado Flush)

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The TOTO Aquia IV toilet is a fantastic two-piece unit that offers several advanced features including the Dynamax Tornado flush system that utilizes 360-degree cleaning power to clean every corner of the toilet.

The universal height seat of  the TOTO Aquia makes it ideal for people of all age groups.

Finally, the skirted design of the bowl reduces water flow resistance and turbulence, resulting in a quiet flush. This design also makes this toilet more manageable to maintain than most two-piece toilets.

Review of the TOTO Aquia IV Toilet (UPDATED)

Our team has gathered facts and researched the features of the Aquai toilet.


“It’s simple, sleek, and efficient. The TOTO Aquia IV is the perfect pick for any bathroom and any user.”




Key Features
  •  Flush Score:   600 MaP
  • Water Consumption: 0.8/1.28 GPF
  • Bowl Shape: Elongated
  • Flushing System: Dynamax Tornado Flush
  • Flush Type: Dual
  • Style: Two-Piece
  • Certifications: WaterSense, CAL Green

Dimensions : Toilet (28.25″ x 15.5″ x 29.25″), Rough-in (12″), Trapway (2.5″), Seat Height (17″)

See image with toilet dimensions
Toto-MS446124CEMG01-AQUIA-IV dimensions

This fantastic two-piece unit offers several advanced features including classic state-of-the-art TOTO flushing technology.

Flushing Power

The Aquia IV uses Tornado Flush technology to eliminate waste in a matter of seconds. The Tornado system uses two powerful nozzles instead of rim holes to simultaneously push out waste and clean the bowl. Another awesome feature is the toilet’s bowl design which reduces water flow resistance, in turn creating a quieter flushing noise.

Two flush options are available – .8 gallons per flush and 1.28 gallons per flush. The EPA WaterSense certified flushing system saves you over 20 percent on your annual water bill, when compared to traditional 1.6 gallon per flush toilets.

Instead of a lever, the Aquia IV has a chrome push-button.

Impressive Design

The Aquia IV is made of vitreous china and comes in cotton and sedona beige. For made-to-order units, the model is also available in bone, colonial white, and ebony (without CEFIONTECT).

The TOTO Aquia IV comes with a CEFIONTECT glaze which prevents grime from sticking to the toilet’s exterior; the glaze also keeps the toilet nice and shiny. Less grime buildup means less time cleaning. All that’s needed is a wipe down every once in a while.

Dual Flush TOTO Aquia IV model The toilet’s skirted design also prevents bacterial buildup by eliminating hiding places for dirt to latch onto. The Aquia IV comes with an elongated toilet bowl and a seat height of 17”. Both the height and the width allow users to comfortably sit on the model by alleviating any bodily strain.

The unit can be purchased in three packages. MS446124CEMGA comes with CEFIONTECT glaze, a SS124 SoftClose seat, and auto flush. MS446124CEMG also comes with CEFIONTECT and a SS124 SoftClose seat, but does not include auto flush. MS446124CEM includes SoftClose seat SS124 but does not come with CEFIONTECT glaze.

You can also purchase the SS234 SoftClose seat and WASHLET adapter separately. WASHLET is TOTO’s signature removable bidet seat which can be purchased and added for most TOTO toilets.

Additional Features

If you choose to upgrade to the WASHLET bidet seat, you’ll get a remote control to adjust the temperature and pressure.

The bidet comes with a wand you can angle however you wish as well. There are multiple WASHLET units available, from the SW3004 Elongated seat to the S550E contemporary classic. You can also match the bidet to the color of your toilet for that effortlessly camouflaged look.

Sometimes it’s hard to visualize a toilet without actually seeing it in person. This YouTube video is the next best thing, giving you a close-up of every small feature the Aquia IV has to offer.

Color Options

  • Cotton (01)
  • Sedona Beige (12)
  • Bone (03)
  • Colonial White (11)
  • Ebony (Without CEFIONTECT) (51)

Other Aquia IV Models

Seat Options

  • SS124 SoftClose seat
  • SS234 SoftClose seat
  • WASHLET®+ S500e
  • WASHLET®+ S550e

Pro and Cons

Positive Comments
  • TOTO Tornado Max flushing system with dual gpf options
  • Great color selection
  • CEFIONTECT glaze
Negative Comments
  • Multiple reported incidents of broken toilet upon arrival in mail

Summary of Recent Reviews

For the most part, users love the Aquia IV, citing the toilet’s easy installation, reasonable price, and reliable flushing mechanism. Users also like the toilet’s height and look in their bathrooms.

The most common complaint is in regards to the toilet’s state upon arrival and the issues surrounding customer service. Some users write about their difficulties getting a replacement toilet but after a few phone calls, they took care of business.