Toto S5 Washlet with Remote - Round in Cotton White

SKU #: TOTSW3445-01
UPC #: 739268467606
MPN #: SW3445#01

MSRP: $932.00

$653.00

This product is backordered until January of 2026

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Condition:: New
Availability:: Special Order, expect 4-6 weeks for delivery, subject to change
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Description

TOTO Washlet S5 Round Bidet Seat – Cotton White

TOTO, a leader in bathroom innovation, offers the Washlet S5 to bring luxury and superior hygiene to your daily routine. The SW3445#01 combines advanced cleansing features, comfort technologies, and an ultra-slim design that enhances both functionality and style.

Brand: TOTO
Model (MPN): SW3445#01
Shape: Round
Color: Cotton White
Water Heating: Instantaneous tankless warm water supply
Bowl Cleaning: PREMIST wets the bowl before use
Wand Cleaning: EWATER+ electrolyzed water cleans wand before and after use
Spray: Adjustable warm water spray with oscillating and pulsating options
Comfort Features: Heated seat, warm-air dryer, automatic air deodorizer, night light
Control: Remote Control
Power: 120 V
Certifications: ADA compliant, cUPC listed, UL 1431, CSA, Prop 65
SoftClose lid and seat prevent slamming
Night light enhances nighttime use
Docking station allows quick removal for easy cleaning
Eco-friendly design helps reduce toilet paper consumption
Warranty: 1-year limited

Our Expert Review: Toto S5 Ultra-Slim Washlet Bidet Seat

Reviewed by: Expert Mack

Overall Score: 4.8/5

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.

Read the Review Read Less Review

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.

Tankless Instantaneous Water Heating

Enjoy continuous warm water for cleansing without waiting for a tank to heat. The S5 delivers on-demand comfort with every use.

PREMIST and EWATER+ for Exceptional Cleanliness

PREMIST technology sprays the bowl before use to help reduce waste buildup. EWATER+ uses safe electrolyzed water to automatically sanitize the wand before and after each use, minimizing the need for manual cleaning.

Comfortable Warm Water Spray with Dual-Action Modes

The S5 offers an adjustable, aerated spray with oscillating and pulsating features. Easily fine-tune temperature, pressure, and position for a personalized, refreshing clean.

Heated Seat, Warm-Air Dryer & Air Deodorizer

The seat warms to your chosen temperature, while the warm-air dryer and automatic deodorizer provide a clean, comfortable, and odor-free experience.

Slim Design & Personalized Remote Control

The S5 boasts a refined, 19% slimmer profile and includes a remote control with memory settings for up to four users, combining elegant form with smart functionality.

Specifications

ADA Yes
Soft Close Yes
Electronic Yes
Warm Air Dryer Yes
Water Sense No
Wireless Remote No
eWater Yes
Auto Close No
Auto Flush Compatible No
Heated Seat Yes
Night Light Yes
Energy Star Yes
Programmable Yes

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