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Toto S2 vs S5

When comparing TOTO’s entry‑level S2 and mid‑range S5 Washlets, both deliver the core luxury bidet experience with instant warm water, heated seating, and auto‑cleaning technology.

The biggest difference lies in how they’re controlled: the S2 uses an integrated side panel while the S5 offers a wireless remote with personalized user presets for convenience and flexibility.

Both models represent the latest "19% slimmer" generation from TOTO, replacing the bulkier C-series with a design that actually fits into a modern aesthetic. Check out our Toto Washlet Comparison Chart to compare all Toto Washlets.

Comparison chart of Toto Washlet S2 and Toto Washlet S5 with visual differences highlighted.


Quick Verdict

Can't decide? Here is the shortcut. Both provide the same elite cleaning power, but they differ in how you "drive" them.

Toto S2

A straightforward setup with built‑in controls — great if you want a premium bidet experience without extra gadgets.

Choose this if you want…

  • Side‑panel controls built into the seat (no remote to lose)
  • A simpler, more intuitive control layout
  • Core TOTO hygiene features at a slightly lower price
$450.00
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Toto S5

A more customizable washlet with a wireless remote and user memory — ideal for shared bathrooms or maximum convenience.

Choose this if you want…

  • Wireless remote control with 4‑user memory presets
  • Easy access to controls anywhere on the wall or nearby
  • Enhanced personalization for water temp, pressure, and settings
$682.00
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Toto S2 vs S5 Comparison Chart

The table below summarizes the key specs and features of the TOTO S2 and TOTO S5 Washlets. Use this as a quick reference before diving into the detailed breakdown below.
Toto S2 vs S5 Comparison Chart
Feature Toto S2 Toto S5
Control Type Integrated Side-Arm Wireless Wall Remote
User Memory Manual Adjust Only 4 Saved Profiles
Instant Water Heating Tankless Tankless
EWATER+ Sanitization Wand Only Wand Only
PREMIST Bowl Prep Yes Yes
Warm Air Dryer 5 Settings 5 Settings
Night Light Auto-Sensing Auto-Sensing
PREMIST Bowl Cleaning Yes Yes
Profile Height ~5.5 inches ~5.5 inches

Toto S2 vs S5 Washlets: Detailed Review

1
TOTO WASHLET S2 Bidet Seat - White toilet seat with remote control on a white background

TOTO WASHLET S2 Bidet Seat

TOTO

Pros
  • Heated seat
  • Warm water wash
  • Self-cleaning wand
  • Adjustable spray settings
  • Simple, reliable design
  • Warm air dryer
Cons
  • Fewer advanced features
  • Basic remote control
$450.00
View Product
2
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)
$682.00
View Product

TOTO S2 vs S5: What Makes These Models Special?

A Revolution in "Tankless" Tech

Older entry-level bidets used a water tank that would run cold after 30 seconds. Both the S2 and S5 use a ceramic instantaneous heater. This means the warm water lasts as long as you do, while also allowing the seat to be nearly 20% slimmer than the models they replaced.

TOTO Aquia IV Arc WASHLET+ S5 Two-Piece right side

Advanced Technology Features

Both the TOTO S2 and S5 offer the essential elements of a premium Washlet experience — instant tankless warm water that never runs out, self‑cleaning EWATER+ wand technology, PREMIST bowl preparation, adjustable heated seat and warm air dryer, and an auto‑sensing night light. They also carry a contemporary slim profile that blends seamlessly into modern bathrooms.

TOTO WASHLET S2 Bidet Seat - Washlet toilet seat with features highlighted on a blue background

Choose TOTO S2 If You:

  • Are on a budget but refuse to compromise on TOTO's elite cleaning quality.
  • Don't want to drill into your tile or walls to mount a remote holder.
  • Want an "indestructible" feel with controls that are physically part of the unit.
  • Value simplicity over tech-heavy personalization.

Choose TOTO S5 If You:

  • Value bathroom aesthetics and want your bidet to look like it came with the toilet.
  • Have multiple family members who all prefer different water pressures.
  • Have mobility issues and find reaching to the side of the seat uncomfortable.
  • Want the "full experience" of a modern, smart-home bathroom.

Frequently Asked Questions

  • The difference between them is that the S2 uses built‑in side panel controls, while the S5 adds a wireless remote with 4‑user memory presets.

  • Yes, both the S2 and S5 feature a soft LED nightlight that glows inside the bowl.

  • No. Both the S2 and S5 are manual-open lids. You would need the S7A for that feature.

  • The side panel adds a few inches of width to the right side of your toilet. Ensure you have clear space between the toilet and the vanity or wall.

  • Both the S2 and S5 use EWATER+ to clean the spray wand after each use.

  • Yes, both models use instantaneous tankless heaters for continuous warm water.

  • Both seats use auto‑sensing for night light and seat detection.

  • You can purchase a replacement, but the seat also has a basic "stop/start" button on the side for emergencies.

  • Yes, they come in Elongated and Round versions. Just be sure to measure your bowl before ordering.

  • While the S5 comes with a wall-mounting bracket, the remote is wireless and can be used as a handheld device if preferred.

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