TOTO C2 vs S2 Washlet: Complete Comparison of Features, Differences, and Upgrades

Looking for the difference between the TOTO C2 Washlet and the new TOTO S2 Washlet? You’re not alone. For years, the C2 was one of TOTO’s best entry-level bidet seats—budget-friendly, reliable, and full of features. But TOTO has officially discontinued the C2, replacing it with the upgraded S2 Washlet.

In this guide, we’ll compare the TOTO C2 vs S2 in detail—covering their shared features, key differences, and whether the S2 is worth the upgrade.

Shared Features: TOTO C2 and S2 Washlets

Both the TOTO C2 and S2 Washlets include the essentials that made them popular as entry-level bidet seats:

• Adjustable warm water spray
• Heated seat with temperature control
• Built-in deodorizer
• Warm air dryer
• SoftClose seat and lid
• PREMIST feature to keep the bowl cleaner
• Side-panel control panel (attached)
• Available in both round and elongated seat sizes

These shared features mean the S2 keeps the comfort and convenience people loved about the C2.

TOTO C2 vs S2: What’s Different?

The main differences between the TOTO C2 and S2 Washlets come down to design, water heating, and convenience features.

• Slimmer Profile: The S2 has a 19% slimmer body with a seamless underside, giving it a modern look and easier cleaning. The C2 was bulkier and rounded.
• Tankless Water Heater: The S2 delivers instant, continuous warm water. The C2 relied on a hot water tank, which ran out after extended use.
• LED Night Light: Only the S2 includes a built-in night light for nighttime use.
• Improved Warm Air Dryer: Both include dryers, but the S2 has stronger airflow with three temperature settings.
• Energy Efficiency: The S2 has automatic energy-saving mode with idle detection. The C2 only had a manual timer.
• Hygiene Upgrades: Both include PREMIST and EWATER+ for cleaning, but the S2 also uses a resin-coated wand to resist grime.

 

TOTO S2 vs C2: Side-by-Side Comparison

Feature	TOTO S2 Washlet	TOTO C2 Washlet
Water Heating	Instant tankless, continuous	Tank system, limited supply
Seat Design	19% slimmer, seamless	Bulkier, with visible seam
Controls	Attached side panel	Attached side panel
Hygiene	PREMIST, EWATER+, resin-coated wand	PREMIST, EWATER+
LED Night Light	Yes	No
Heated Seat	Yes	Yes
Warm Air Dryer	Yes, stronger airflow	Yes
Deodorizer	Yes	Yes
Energy Saving Mode	Auto + manual	Manual only

 

Why Did TOTO Discontinue the C2 Washlet?

While TOTO hasn’t released an official explanation, it’s clear that the TOTO S2 Washlet is designed to replace the C2. It keeps the same entry-level price point but adds a slimmer design, tankless water heating, and extra convenience features that align with TOTO’s newer Washlet lineup.

Is the TOTO S2 Washlet Worth Buying?

Yes—if you’re shopping for an affordable bidet seat, the S2 Washlet is the direct replacement for the C2. It offers all the same basics, plus modern upgrades, better energy efficiency, and continuous warm water. Since the C2 is no longer being produced, the S2 is the clear choice for anyone wanting the best entry-level TOTO Washlet.

Full List of TOTO S2 Washlet Features

• EWATER+ wand sanitization (inside & out)
• PREMIST bowl spray before each use
• Resin-coated wand resists buildup
• Aerated warm water front & rear spray
• Multiple spray modes: oscillating, pulsating, massage
• Adjustable spray pressure, position, and temperature
• Tankless, instantaneous warm water heater
• Uses ~38% less energy compared to tank system
• Warm air dryer with three settings
• Heated seat with temperature control
• Automatic deodorizer
• SoftClose seat and lid
• LED night light for nighttime use
• Auto energy saver mode with idle detection
• Quick-release docking for easy cleaning
• Available in elongated and round sizes
• Comes with power cord and water supply hose
• Final Thoughts: TOTO C2 vs S2

The TOTO Washlet C2 was a dependable, budget-friendly choice for years, but its successor, the TOTO Washlet S2, is simply better. With its slimmer design, tankless heating, stronger dryer, and added convenience features, the S2 is the new standard for entry-level Washlets.

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