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Toto S5 vs S7

The TOTO S7 is the newer, more advanced model, while the S5 offers a more budget-friendly way to get premium bidet features. Both include tankless warm water, EWATER+ cleaning, and user-friendly controls—but the S7 improves on design, hygiene coverage, and overall technology.

Go with the S7 if you want the latest upgrades and a slimmer, more refined experience. Choose the S5 if you want reliable high-end features at a lower price point. Check out our Toto Washlet Comparison Chart to compare all Toto Washlets.

Comparison between Toto Washlet S5 and Toto Washlet S7 with sensor labels on a blue background.


Quick Verdict

Not sure which one to pick? Here’s a quick breakdown to help you decide.

Toto S7

A newer-generation model with a sleeker design and upgraded cleaning system.

Choose this if you want…

  • Automatic deodorizer & night light
  • Enhanced EWATER+ cleaning
  • Prefer manual control over automation
$1,279.00
View Product

Toto S5

A reliable premium bidet that offers strong core features at a lower price.

Choose this if you want…

  • A more affordable high-end bidet
  • Proven features without paying for newer upgrades
  • A slightly simpler, no-frills experience
$682.00
View Product

Toto S7 vs S5 Comparison Chart

The table below highlights the main differences and shared features between the Toto S5 and Toto S7 Washlets for quick reference.
Toto S7 vs S5 Comparison Chart
Feature Toto S7 Toto S5
Auto Open/Close Lid Manual Manual
EWATER+ Sterilization Yes (Wand, Bowl, & Under-seat) Yes (Wand Only)
Instant Water Heating Tankless Tankless
4-User Memory Settings Yes Yes
Heated Seat Adjustable Adjustable
Warm Air Dryer 5 Settings 5 Settings
Night Light Auto-Sensing Yes
PREMIST Bowl Cleaning Yes Yes
Slim Profile Height 4.1 inches 5.5 inches

Toto S5 vs S7 Washlets: Detailed Review

1
TOTO WASHLET S5 Bidet Round Seat - main image of bidet seat on a white background

TOTO WASHLET S5 Bidet Seat

TOTO

Pros
  • Warm water wash
  • Heated seat & warm air dryer
  • Self-cleaning nozzle
  • Deodorizer
  • Adjustable spray & pressure
Cons
  • Higher price than basic seats
  • Needs power outlet
  • No advanced smart app control (remote only)
$974.00 $682.00 Sale
2
TOTO Washlet S7 Bidet Toilet Seat - Elongated right side view on a white background

TOTO Washlet S7 Bidet Toilet Seat

TOTO

Pros
  • Warm water cleansing
  • Heated seat for comfort
  • Warm air dryer
  • Self‑cleaning nozzle
  • Adjustable spray and pressure
Cons
  • Requires power outlet
  • Advanced features may take a little time to learn
$1,826.00 $1,279.00 Sale

TOTO S5 vs S7: What Sets Them Apart?

A Newer Generation of TOTO Washlets

TOTO introduced the S7 as part of its updated lineup, improving on earlier models like the S5 with a more refined design and enhanced hygiene features. While the S5 remains a reliable premium option, the S7 represents a step forward in both functionality and overall user experience.

One of the most noticeable upgrades is the slimmer design. The S7 features a low-profile 4.1-inch height, compared to the taller build of the S5. This reduction improves comfort by creating a more natural seating position and a sleeker look in modern bathrooms.

The S7 also expands on TOTO’s EWATER+ system. In addition to cleaning the wand and bowl like the S5, it also sanitizes the under-seat area. This added coverage helps maintain better hygiene while reducing the need for manual cleaning.

TOTO Washlet S7 EWater+ technology

Advanced Technology Features

Both models are equipped with TOTO’s core premium technologies designed for comfort and convenience.

They use instant tankless water heating, which provides continuous warm water without relying on a bulky tank. This ensures consistent temperature and contributes to the overall streamlined design.

EWATER+ technology uses electrolyzed water to automatically clean the wand and toilet bowl before and after each use. This helps maintain cleanliness without the need for harsh chemicals.

PREMIST technology sprays the toilet bowl with water before use, helping prevent waste from sticking and making cleaning easier over time.

Both the S5 and S7 also include 4 programmable user memory settings, allowing multiple users to save personalized preferences such as water pressure, temperature, and spray position for a more comfortable experience.

TOTO WASHLET S5 Instant Warm Water

Choose TOTO S7 If You:

  • Want the newer-generation model with updated design and features - Enjoy a more refined and modern bidet experience
  • Prefer a slimmer, low-profile seat - Improve comfort with a sleek 4.1-inch design
  • Value enhanced hygiene technology - Benefit from EWATER+ cleaning that includes the under-seat area
  • Want a more seamless and modern build - Easier to clean with fewer gaps and crevices
  • Don’t mind paying more for upgrades - Invest in the latest improvements from TOTO

Choose TOTO S5 If You:

  • Want a more budget-friendly premium option - Get high-end features at a lower price
  • Are okay with a slightly bulkier design - Prioritize function over form
  • Prefer a simpler, proven model - Reliable performance without newer enhancements
  • Don’t need expanded EWATER+ coverage - Standard cleaning features are sufficient
  • Want dependable everyday performance - Covers all essential bidet functions well

Frequently Asked Questions

  • The difference between them is that the S7 adds EWATER+ cleaning for the bowl, extra wash modes, and optional auto-flush, while the S5 focuses on wand cleaning only.

  • Yes, the TOTO S5 has a night light with auto-sensing.

  • Neither the S7 nor the S5 has an automatic lid; this feature is only available on the S7A.

  • The S5 is 5.5 inches tall while the S7 is 4.1 inches; both fit standard toilets, but the S5 sits slightly higher.

  • The difference is that the S5 cleans the wand only, while the S7 cleans both the wand and bowl for more complete sterilization.

  • Only the S7 supports optional auto-flush with a compatible kit; the S5 does not.

  • Both seats provide unlimited warm water using tankless heating.

  • The difference is that both have wireless remotes with 4-user memory, but the S7 includes extra wash mode options.

  • The S5 uses a weight/pressure sensor that makes a faint "click" when you sit down. The S7 uses a skin/touch sensor for a more seamless experience without moving parts.

  • Yes, but the coverage varies. The S5 nightlight primarily illuminates the bowl. The S7 features an auto-sensing nightlight that illuminates both the side of the unit and the bowl.