TOTO® WASHLET® S2 Electronic vs TOTO® WASHLET® C5 Electronic (2026): Key Differences
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This guide compares the toto toto washlet s2 electronic vs toto washlet c5 electronic. Both models offer essential hygiene features like PREMIST and EWATER+ wand cleaning. They share similar wash modes and heated seats. The main difference lies in their shape and control interface. The C5 uses a remote and fits elongated bowls. The S2 uses a side panel and fits round bowls. Your choice depends on your toilet shape and preferred control method.
Key differences
| Aspect | TOTO C5 Elongated Bidet Seat | TOTO WASHLET S2 Round Electric Bidet |
|---|---|---|
| Seat Shape | Elongated | Round |
| Control Interface | Remote control | Side panel |
| Water Heating | Not listed | Instantaneous |
| Nightlight | Not listed | Built-in |
| Width | 15.1 inches | 18.4 inches |
| Height | 0.99 inches | 5.5 inches |
Which one should you choose?
Choose TOTO C5 Elongated Bidet Seat if
- You have an elongated toilet bowl
- You prefer using a handheld remote for settings
- You want a lower profile seat height
Choose TOTO WASHLET S2 Round Electric Bidet if
- You have a round toilet bowl
- You want instantaneous warm water heating
- You prefer a built-in nightlight feature
Verdict: Choose the C5 if you need an elongated seat and remote control convenience. Select the S2 for round bowls, instant heating, and a side-panel interface. Both provide reliable PREMIST and wand cleaning.
S2 vs C5 Bidet Comparison
Heating system
The TOTO WASHLET S2 Electronic uses an instantaneous water heating system. This feature ensures you receive a continuous stream of warm water for as long as you need it during your cleansing routine. In contrast, the TOTO WASHLET C5 Electronic does not list an instantaneous heater in its provided specifications. While both models provide adjustable warm water settings, the S2 offers a distinct advantage for users who prioritize unlimited hot water flow without waiting for a tank to reheat. This difference in heating technology affects the consistency of your experience during longer sessions.
Control interface
You control the TOTO WASHLET C5 Electronic using a convenient remote control. This allows you to adjust personalized water cleansing settings from a distance, providing luxury and cleanliness at your fingertips. The TOTO WASHLET S2 Electronic, however, utilizes a side panel for control. While both interfaces let you set your preferences, the remote on the C5 offers more flexibility in positioning. The side panel on the S2 is fixed to the unit. Your choice depends on whether you prefer the convenience of a handheld remote or the simplicity of an integrated control panel.
Seat shape
The TOTO WASHLET C5 Electronic is designed specifically for elongated toilet bowls. Its dimensions are 20.9 inches in length and 15.1 inches in width, fitting standard elongated fixtures. The TOTO WASHLET S2 Electronic is available in a round shape, with a length of 19.1 inches and a width of 18.4 inches. This shape difference is critical for compatibility. You must match the seat shape to your existing toilet bowl to ensure a proper fit. The C5 is the clear choice for elongated toilets, while the S2 is suited for round bowls.
Nightlight feature
The TOTO WASHLET S2 Electronic includes a built-in nightlight that fills the bathroom with a soft, illuminating glow. This feature is useful for nighttime visits without needing to turn on bright overhead lights. The TOTO WASHLET C5 Electronic does not mention a nightlight in its specifications. If you value subtle illumination for convenience during the night, the S2 provides this specific benefit. The C5 lacks this particular amenity according to the available data. This is a small but practical difference for users who prefer low-light navigation in the bathroom.
User memory settings
The TOTO WASHLET C5 Electronic offers two user memory settings. This allows you to save your preferred water temperature and pressure levels for quick access. The TOTO WASHLET S2 Electronic does not list user memory settings in its provided specifications. If you share your bathroom with others who have different preferences, the C5 makes it easier to switch between personalized setups. The S2 may require manual adjustment each time. This feature adds convenience for households with multiple users who want consistent settings.
Shared hygiene features
Both the TOTO WASHLET S2 Electronic and the TOTO WASHLET C5 Electronic include PREMIST and EWATER+ wand cleaning. PREMIST mists the bowl before use to prevent waste from sticking. EWATER+ automatically cleans the wand inside and out. Both models also offer pulsating and oscillating wash modes for effective cleansing. They share a SoftClose heated seat and an adjustable warm air dryer. These common features provide a high standard of hygiene and comfort in both units. You get reliable cleaning performance regardless of which model you choose.
Choose the Right TOTO Bidet for You
You have an elongated toilet bowl.
The TOTO C5 is designed specifically for elongated seats. It measures 20.9 inches in length, ensuring a proper fit for your existing toilet. This model includes a remote control for easy operation. You can adjust water pressure and temperature with the included remote. The seat stays warm with consistent coverage. It is a solid choice for standard elongated bathroom fixtures.
You prefer instant hot water.
The S2 model features an instantaneous water heating system. This provides a continuous stream of warm water without delay. You do not need to wait for a tank to heat up. The side panel control keeps the interface compact. A built-in nightlight adds convenience for nighttime use. The round seat design fits standard round toilets perfectly.
You want remote control convenience.
The C5 model includes a dedicated remote control. This allows you to adjust settings without reaching for the side panel. You can save two user memory settings for quick access. The remote offers precise control over water temperature and pressure. This feature is ideal if you prefer a clean look on the seat itself.
The products compared
TOTO C5 Elongated Bidet Seat
Best for: elongated toilets needing PREMIST and remote
- Seat Shape
- Elongated
- Wash Modes
- Pulsating, oscillating
- Included Components
- Bidet
- Dimensions
- 20.9 × 15.1 × 0.99 inches
- Weight
- 15.5 pounds
View on Amazon: TOTO C5 Elongated Bidet Seat Affiliate link
The TOTO WASHLET C5 Electronic is an elongated bidet seat in cotton white. It features adjustable warm water and pressure settings with pulsating and oscillating wash modes. Key specs include a 15.1-inch width and 15.5-pound weight. It includes a remote control, air deodorizer, and warm air dryer. The unit uses PREMIST and EWATER+ for hygiene. This model suits users seeking advanced cleansing features and automatic bowl misting for a comfortable daily routine.
Pros
- Includes remote control for personalized settings
- Features PREMIST to prevent waste adhesion
- Offers pulsating and oscillating wash modes
- EWATER+ wand self-cleans automatically
Cons
- Heavier at 15.5 pounds than basic models
- Only 2 user memory settings available
- No smart app integration listed in data
Good fit if
- You want automatic bowl misting
- You prefer using a remote control
- You have an elongated toilet bowl
Skip if
- You need more than 2 user profiles
- You require app-based smart control
- You have a round toilet bowl
Verdict: TOTO C5 Electronic Bidet Seat is a robust choice for users who value automatic PREMIST and remote convenience. It fits elongated toilets well and delivers thorough cleansing through oscillating and pulsating modes.
TOTO WASHLET S2 Round Electric Bidet
Best for: Round toilets needing instant heating and PREMIST
- Seat Shape
- Round
- Wash Modes
- Pulsating and oscillating
- Included Components
- Bidet
- Dimensions
- 19.1 × 18.4 × 5.5 inches
- Weight
- 16 pounds
View on Amazon: TOTO WASHLET S2 Round Electric Bidet Affiliate link
The TOTO Washlet S2 is a round electronic bidet seat featuring instantaneous water heating for a continuous warm stream. It includes pulsating and oscillating wash modes for customizable cleansing. Additional specs include a soft-close heated seat, an air deodorizer, and an adjustable warm air dryer. The unit measures 19.1 inches in length and weighs 16 pounds. It suits users seeking reliable daily hygiene with PREMIST and EWATER+ wand cleaning technology.
Pros
- Instantaneous water heating provides a continuous warm stream
- Pulsating and oscillating wash modes for targeted cleansing
- PREMIST feature mists the bowl before use to prevent waste sticking
- EWATER+ wand self-cleans automatically inside and out
- Includes adjustable warm air dryer and built-in nightlight
Cons
- Round seat shape may not fit elongated toilets
- Controlled via side panel rather than a remote
- No mention of smartphone app connectivity
Good fit if
- You have a round toilet bowl
- You prefer direct side-panel controls
- You want PREMIST bowl protection
Skip if
- You own an elongated toilet
- You require remote control operation
- You need app-based smart features
Verdict: The TOTO Washlet S2 Round Bidet Seat offers dependable hygiene with instant heating and PREMIST protection for round toilets. It fits users who value straightforward side-panel controls and consistent warm water performance.
Specifications side by side
| Spec | TOTO C5 Elongated Bidet Seat | TOTO WASHLET S2 Round Electric Bidet |
|---|---|---|
| Seat Shape | Elongated | Round |
| Wash Modes | Pulsating, oscillating | Pulsating and oscillating |
| Included Components | Bidet | Bidet |
| Shape | Elongated | Round |
| Dimensions | 20.9 × 15.1 × 0.99 inches | 19.1 × 18.4 × 5.5 inches |
| Weight | 15.5 pounds | 16 pounds |
| Size | C5 Elongated | Round |
| Color | Cotton White | Cotton White |
| Model | SW3084#01 | SW3345#01 |
Frequently asked questions
Does the TOTO C5 come with a remote control?
Yes, the TOTO C5 Electronic includes a remote control for operation. This feature allows you to adjust settings without reaching for the side panel. It provides convenient access to the bidet functions, including wash modes and seat temperature, making it easier to customize your experience.
What is the difference in shape between the S2 and C5?
The TOTO WASHLET S2 Electronic is designed for round toilet bowls, while the TOTO C5 is built for elongated toilets. You must match the seat shape to your toilet bowl. The S2 measures 19.1 inches in length, whereas the C5 is 20.9 inches long to fit elongated designs.
Which model is better for an elongated toilet?
The TOTO C5 Electronic is the correct choice for elongated toilets. It is specifically shaped to fit these bowls, measuring 20.9 inches in length. The S2 model is sized for round toilets and will not fit properly on an elongated seat, so check your bowl shape first.
How heavy is the TOTO C5 bidet seat?
The TOTO C5 Elongated Bidet Seat weighs 15.5 pounds. This weight reflects its robust construction and included components. It is slightly lighter than the S2 model, which weighs 16 pounds. Both seats are substantial enough to feel secure during installation and daily use.
What color options are available for these TOTO models?
Both the TOTO C5 and the TOTO WASHLET S2 Electronic are available in Cotton White. This neutral color blends well with most bathroom decor. The consistent color option ensures that whichever model you choose based on shape or features, the aesthetic will match standard bathroom fixtures.
Does the S2 model fit round toilets?
Yes, the TOTO WASHLET S2 Electronic is designed specifically for round toilets. Its length is 19.1 inches, which matches the dimensions of round bowl seats. If you have a round toilet, this model provides the correct fit and ensures proper alignment for the bidet functions.