Integrated Toilet and Bidet Seat Comparison: TOTO Neorest AC VS TOTO Neorest 550H

View These Integrated Units:

Contact Us for TOTO Neorest AC Availability (CWT996CEMFX#01)

TOTO Neorest 550H Integrated Toilet and WASHLET (MS982CUMG#12, MS982CUMG#01)

At first glance, the TOTO Neorest 550H and the TOTO Neorest AC look like they have nothing in common. Under the surface, however, they’re much more similar than they look, with only a few differences. We’ve broken these down into a quick-reference table, followed by a more detailed description of each difference so you can feel confident figuring out which unit is right for you.


Neorest 550H

Neorest AC

MountingFloor MountedWall Mounted
ColorsCotton White, Sedona BeigeCotton White
Self-CleaningNo–rinses the nozzles onlyYes–Actilight Technology self-cleans bowl

Looks and Mounting

It goes without saying that these two units look virtually nothing alike. The TOTO Neorest 550H is a floor mounted unit and features a softly rounded body and an elegant, angled lid. It comes in both white and beige, which makes it easy to match with your existing bathroom color scheme. The TOTO Neorest AC, on the other hand, is a wall-mounted unit, so it looks as if it’s floating in mid-air and flaunts crisp contours and a square silhouette. Because its water tank and flushing mechanism are hidden in the wall, the TOTO Neorest AC takes up much less space than a traditional, floor mounted unit, making it the perfect choice for small bathrooms. It does, however, only come in white.


Both the TOTO Neorest AC and the TOTO Neorest 550H automatically sanitize their nozzles with electrolyzed water, called EWATER+, each time the unit is used. However, between the two, only the Neorest AC features TOTO’s state-of-the-art self-cleaning technology called Actilight, which takes unit hygiene to the next level. Using UV light, Actilight works to break down leftover residue in the bowl, thus cleaning the unit without requiring any harsh chemicals.

Final Thoughts

When deciding between the TOTO Neorest 550H and the TOTO Neorest AC, the two biggest decision points are looks and self-cleaning ability. The TOTO Neorest 550H is a traditional floor-mounted unit that comes in both white and beige but it isn’t quite as sleek as the TOTO Neorest AC. The TOTO Neorest AC gets points for both style and compactness, but it’s modern look may not be for everyone, and it’s only available in white. That leaves self-cleaning ability: while both units cleanse their nozzles, only the TOTO Neorest AC has the capacity to self-clean using UV light (Actilight). If you love the look and have the budget, or if you’re working with a tiny bathroom, the TOTO Neorest AC is sure to please! If you’re willing to forego self-cleaning in order to stay in a more modest price range, or if you simply prefer a traditional silhouette or need a beige unit, the TOTO Neorest 550H might be the unit for you! If you have any other questions about either unit, we’d love to hear from you!

Other Details About Both Units

Model Numbers

TOTO Neorest AC: CWT996CEMFX#01

Made from the following parts:

  • Bowl Unit: CT996CEFX#01
  • Top Unit: SN996MX#01
  • NEOREST In-Wall Tank Unit: WT174M
  • White Glass Push Plate: YT994#WH

TOTO Neorest 550H: MS982CUMG#01 (White), MS982CUMG#12 (Sedona Beige)

Neorest 550H made up of the following parts:

  • Bowl Unit: CT982CUMG
  • Top Unit: SN982MR

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