TOTO S2 vs C2: The New Washlet Upgrade
The TOTO Washlet S2 is the newer, upgraded version of the TOTO Washlet C2, adding a tankless water heater for continuous warm water and 38% less energy use, a 19% slimmer seamless seat, massage spray, adjustable spray position, a built-in nightlight, and a SoftClose seat, features the Washlet C2 doesn't have.
Both models share the same core cleansing features, like EWATER+ wand sanitization, PREMIST, and a heated seat, making the Washlet S2 the better pick if you want the latest comfort and hygiene upgrades, while the Washlet C2 remains a solid option if you find one at a lower price.
Hygiene & Cleaning Features
| Feature | TOTO C2 | TOTO S2 |
| EWATER+ Wand Sanitization | Yes – auto & on-demand | Yes – auto inside & out after every use |
| PREMIST Bowl Spray | Yes | Yes |
| Self-Cleaning Wand | Yes | Yes – enhanced internal & external rinse |
| CLEAN RESIN Surfaces | No | Yes – wand & seat stay cleaner |
| Seamless Seat Design | No | Yes – gap-free to stop grime |
| Automatic Air Deodorizer | Yes | Yes |
Why the S2 is better: The S2 Washlet improves hygiene with internal/external wand sanitizing, CLEAN RESIN surfaces, and a seamless seat to resist grime and buildup.
Comfort, Spray & Drying
| Feature | TOTO C2 | TOTO S2 |
| Front & Rear Cleansing | Yes | Yes |
| Spray Type | Gentle aerated, dual-action | Gentle aerated, dual-action |
| Oscillating & Pulsating Spray | Yes | Yes |
| Massage (Cycling) Spray | No | Yes |
| Adjustable Spray Position | No | Yes |
| Adjustable Water Temp & Volume | Yes | Yes |
| Warm Air Dryer | Yes – 3 temperature settings | Yes – 3 temperature settings |
| Heated Seat | Yes – with temp control | Yes – with temp control |
| SoftClose Seat | No | Yes |
Why the S2 is better: It adds spray-position control, a soothing massage mode, and a SoftClose seat to enhance user comfort and convenience.
Water Heating & Energy Efficiency
| Feature | TOTO C2 | TOTO S2 |
| Heating Method | Reservoir tank | Instantaneous tankless heater |
| Continuous Warm Water | No | Yes |
| Auto Energy Saver Mode | No | Yes – lowers seat temp when idle |
Why the S2 is better: The S2's tankless heater provides unlimited warm water and reduces energy use by 38%. Plus, it conserves more with an auto energy-saver mode.
Controls, Design & Installation
| Feature | TOTO C2 | TOTO S2 |
| Side-Arm Control Panel | Yes | Yes – intuitive for all ages |
| Built-in Nightlight | No | Yes – gentle bowl illumination |
| Seat Profile | Standard | 19% slimmer, seamless |
| Quick-Release Docking | Yes | Yes – easier cleaning |
| Toilet Compatibility | Most elongated toilets | Elongated & round North-American fit |
| Included Accessories | Power cord, hoses | Power cord, hoses |
Why the S2 is better: A slimmer profile, built-in nightlight, and easier cleaning make the S2 more modern and user-friendly for any household.
TOTO S2 Washlet Full Features
- EWATER+ auto-cleans wand inside & out
- PREMIST mists the bowl before each use
- Self-cleaning wand with internal and external rinse
- CLEAN RESIN surfaces resist grime and buildup
- Gentle aerated, warm water front & rear spray
- Oscillating, pulsating, and massage (cycling) spray modes
- Adjustable spray position, water temperature, and pressure
- Instantaneous tankless water heater for continuous warm water
- Reduces energy use by approximately 38%
- Warm air dryer with three temperature settings
- Automatic air deodorizer
- Heated seat with temperature control
- Seamless SoftClose seat and lid
- Intuitive side-arm control panel
- Built-in nightlight for safer nighttime use
- Auto energy saver mode lowers power use when idle
- Quick-release docking station for easier cleaning
- Compatible with most elongated and round toilets
- Includes power cord and water supply hoses
Final Thoughts on the new TOTO C2 vs S2
If you liked the C2, the TOTO WASHLET S2 is everything you need and more. It builds on a trusted foundation with better hygiene, smarter comfort, and improved energy performance.
With a sleeker profile, tankless heater, enhanced spray options, and low-maintenance design, the S2 is built for today's bathrooms and made to last.
Ready to upgrade? Order your TOTO S2 from Premier Bidets today and enjoy next-level comfort with fast shipping and expert support.
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