Revitalize Your Bathroom with TOTO's S5 Washlet Bidet Seat – Elongated in Sedona Beige
Experience advanced bathroom comfort and hygiene with TOTO's S5 Washlet elongated bidet seat (SW3446#12). Designed for modern bathrooms, this electronic bidet seat combines personalized cleansing settings with innovative TOTO technology to deliver a cleaner, more comfortable experience every time you use it. Plus, its refined tankless design is 19% slimmer, helping reduce material use while creating a sleek, modern profile.
Key Features
Advanced Personal Cleansing
Experience a spa-like cleanse with gentle aerated warm water sprays for both front and rear washing, featuring adjustable pressure along with oscillating and pulsating functions. Customizable temperature settings for both the water and heated seat allow users to tailor comfort to their preferences, while the integrated warm air dryer provides a complete cleansing routine without the need for toilet paper.
Advanced EWATER+® and PREMIST® Technology
TOTO technologies help reduce buildup, minimize maintenance, and keep the toilet cleaner with less reliance on harsh chemicals. PREMIST® automatically sprays the toilet bowl with a fine mist of water before each use, helping prevent waste from sticking to the surface. EWATER+® uses electrolyzed water to automatically clean the spray wand and bowl, reducing the need for harsh chemicals while maintaining a higher level of hygiene.
Slim SoftClose® Seat Design
The slim SoftClose® seat combines a sleek, low-profile appearance with quiet, controlled operation. SoftClose® hinges gently lower the seat and lid to prevent slamming, reducing noise and everyday wear. The seamless design also helps simplify cleaning by minimizing gaps and hard-to-reach areas where dirt and debris can collect.
Personalized Remote Control & User Memory
The multifunction remote control allows users to easily adjust spray settings, temperature, and comfort features with intuitive precision. Personalized memory settings store preferred configurations for up to four users, making daily routines more convenient for shared households. Designed for both simplicity and customization, the control system enhances the smart functionality of the entire toilet experience.
Our Expert Review: TOTO S5 Ultra-Slim Washlet Bidet Seat
Summary
The Toto S5 Washlet is a big upgrade from its predecessors, moving into the realm of true luxury at a mid-to-high-tier price point. The standout feature is the instantaneous (tankless) heating, which eliminates the risk of running out of warm water—a major improvement over the C5. Combined with an ultra-slim design, four user memory presets, and all of TOTO's best hygiene technology, EWATER+ for chemical-free sanitization, the S5 delivers consistent, and personalized experience.
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Performance: 5/5 
The S5's performance is flawless. The instantaneous heating provides an endless, on-demand warm water spray with a stronger, more consistent feel than the C5's tank-based system. The aerated wash, with its oscillating and pulsating options, is refreshing and highly effective. The warm air dryer also features increased airflow compared to older models, noticeably trimming down drying time. The addition of the subtle in-bowl night light is a fantastic quality-of-life feature, making late-night trips much easier.
User Experience: 5/5
TOTO has greatly improved the user experience with the S5. The ultra-slim design looks sleek and modern, and the seamless underside is easier to clean than the C5. The biggest user-facing improvement is the multifunction wireless remote with four user memory settings. This allows an entire family to save their favorite settings (temperature, pressure, position) and access them with a single button, a huge leap from the C5’s two presets. Installation remains simple with the quick-release docking station.
Quality: 4.5/5
TOTO maintains its reputation for excellence. The S5 feels premium, durable, and is engineered for long-term reliability. It integrates an upgraded CLEAN RESIN coating on the wand and seat, actively resisting dirt and bio-film to maintain hygiene with less effort. The EWATER+ and PREMIST functions work seamlessly to keep the unit and the bowl cleaner. The only deduction is for the height, as the even more premium S7A achieves an even lower profile.
Value: 4.5/5
The S5 is priced as a premium seat, but its value is exceptionally strong. It delivers all the crucial luxury features—instantaneous heating, EWATER+, deodorizer, night light, and four user presets—in a modern, slim design. Given the superior comfort and efficiency of the tankless heating and the significant feature upgrades over the C5 (which is now discontinued), the S5 represents the optimal blend of performance and cutting-edge technology for the price. It's a worthy investment that will last for years.
Final Verdict
If you want the most significant comfort upgrade TOTO offers—unlimited warm water—the S5 is the model to choose. It takes everything the C5 did well and perfects it with tankless heating, a slimmer silhouette, and a smarter remote control. For daily hygiene, comfort, and a touch of modern luxury, the Toto S5 Washlet is absolutely a top-tier performer and a highly recommended purchase.
Product Information
- High-tech electronic bidet seat
- EWATER+® auto-cleans wand after every use
- PREMIST® automatically mists the bowl before each use
- Self-cleaning wand cleans itself inside and out before and after every use
- CLEAN RESIN® keeps wand and seat cleaner, more hygienic, and effortless to maintain
- Gentle aerated, warm water, front and rear spray with oscillating and pulsating features
- Adjustable spray position, water temperature, and water pressure
- Instantaneous water heater for continuous warm water and energy savings
- Warm air dryer with three variable temperature settings
- Automatic air deodorizer
- Multifunction remote control with personalized memory settings for up to 4 users
- Heated seat with temperature control
- Seamless seat design eliminates the gap where dirt collects
- SoftClose® seat
- Docking station for easy cleaning and installation
- Night light illuminates the inside of the bowl
- Auto energy saver mode adjusts the seat temperature when inactive
- Compatible with most elongated toilets
- One Year Limited Warranty
For a deep-dive into TOTO's S5 Washlet, read the article TOTO C5 vs. S5: What’s the Difference and Is the S5 Worth the Upgrade?
Additional Details
- Brand: TOTO
- MPN: SW3446#12
- Series: S5
- Shape: Elongated
- Color: Sedona Beige
- Power Rating: AC 120 V, 60 Hz
- Power Consumption: 1271 W
- Power Cord Length: 3.9 ft
- Water Supply Pressure: 7.25 PSI (flowing) minimum
- Ambient Temp.: 32°F-104°F
TOTO S5 Washlet FAQ
Does the TOTO S5 provide unlimited warm water?
Yes. The TOTO S5 features an instantaneous tankless water heating system that delivers continuous warm water throughout each use. Unlike reservoir-style bidet seats, it heats water on demand, so there's no waiting for a tank to refill or reheat between users.
What is the difference between the TOTO C5 and S5 WASHLET?
Both models offer warm water cleansing, a heated seat, warm air dryer, deodorizer, and a wireless remote. The S5 adds TOTO's slimmer, more modern tankless design, PREMIST®, EWATER+® self-cleaning technology, an automatic night light, and support for up to four personalized user presets, making it a more advanced upgrade for everyday comfort and hygiene.
What is the difference between the TOTO S2 and S5 WASHLET?
Both the TOTO S2 and S5 feature an instantaneous water heater, heated seat, warm air dryer, deodorizer, PREMIST®, and EWATER+® self-cleaning technology. The S5 builds on those features with a slimmer, more modern profile, an integrated night light, support for up to four personalized user presets, and a redesigned wireless remote for easier operation. It's an excellent choice for households looking for greater convenience and customization.
Is the TOTO S5 easy to install?
Yes. The TOTO S5 is designed to install on most compatible elongated toilets using the included mounting hardware and water connection components. It connects to your existing cold water supply and requires access to a nearby GFCI electrical outlet. Most homeowners can complete installation in under an hour using basic tools.
How does the TOTO S5 remote work?
The TOTO S5 includes a slim wireless remote that puts every function within easy reach. Users can adjust water temperature, spray position, spray pressure, dryer temperature, and other comfort settings, while also saving personalized presets for up to four users. The remote can be mounted to the wall for convenient everyday access.
