TOTO Washlet S2 Elongated Bidet Seat – Cotton White
The TOTO Washlet S2 (SW3346#01) brings advanced bidet seat technology and everyday comfort to your bathroom with a slim, modern design and intuitive operation. Designed for elongated toilets, it seat provides a personalized cleansing experience with adjustable warm water spray, heated seat, warm-air dryer, and built-in deodorizer. This luxurious bidet seat attachment is an excellent choice for homeowners looking to add a cleaner, more comfortable bathroom experience without replacing the entire toilet.
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.
Convenient Side Arm Control
The integrated side arm control places essential Washlet functions within easy reach, allowing users to adjust cleansing settings with simple, intuitive controls. Designed for everyday convenience, the streamlined control panel provides quick access to wash functions, water temperature, pressure adjustments, and other comfort features without the need for a separate remote.
Integrated Air Deodorizer
An automatic air deodorizer actively helps neutralize odors, keeping the bathroom environment fresh throughout the day. Designed to operate quietly in the background, this feature enhances comfort without requiring additional maintenance or effort. By improving air quality after each use, it contributes to a cleaner and more pleasant overall experience.
Our Expert Review: TOTO S2 Ultra-Slim Washlet Electronic Bidet Toilet Seat (SW3346#01)
Summary
We received an S2 Washlet to demo the unit, and we're excited to share our thoughts. This ultra-slim seat is a big upgrade from the Toto C2 Washlet; it looks great and gives you continuous warm water thanks to its tankless design. This is also how they managed to get the slimmer profile. You still get all the key TOTO cleaning features, like EWATER+ and a heated seat, making it a fantastic value. It's a great entry level bidet seat for anyone who wants unlimited warm water with an adjustable spray nozzle. The only thing that causes some friction is the remote is an attached control panel on the side of the unit.
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Performance: 4/5 
The S2's biggest selling point is its instantaneous water heating system, which provides endless, on-demand warm water, a major step up from older tank-based seats. The adjustable warm water spray, along with the oscillating and pulsating options, ensures a thorough and comfortable clean. The only minor drawback is the warm air dryer, which, while functional, is not fast enough to completely eliminate the need for a final pat-dry, or at least that was the case for me and my tush!
User Experience: 5/5
Installation is simple and can typically be completed in under an hour by a DIY enthusiast. It is the same process as the Toto C2 we installed in this video. Operation is handled via the side-mounted arm control panel, which keeps the design clean but is not as convenient as a wireless remote. The inclusion of a bowl nightlight is a fantastic addition for middle-of-the-night use.
Quality: 4.5/5 
TOTO maintains its reputation for quality even in this entry-level model. The slimmer, more modern profile is aesthetically pleasing, and the SoftClose seat and quick-release feature simplify cleaning. It includes the premium hygiene features (PREMIST and EWATER+) typically reserved for higher-end models, making it feel robust and exceptionally sanitary.
Value: 5/5
The TOTO S2 is arguably one of the best values in the premium bidet market. It includes the most essential luxury features (instant warm water, heated seat, EWATER+ wand cleaning, nightlight) in a high-quality, slim package. For the price, it is an easy upgrade that offers superior comfort and hygiene compared to other similarly-priced options.
Final Verdict
If your main goal is to upgrade to a sleek, instantaneous warm water bidet seat with TOTO's advanced cleaning technologies, the S2 Washlet is an outstanding choice. It provides all the essentials for a spa-like experience and is a noticeable improvement over previous TOTO entry-level seats.
Pro Tip: If you absolutely require a wireless remote control or user presets for multiple people, you should consider stepping up to a model like the TOTO S5, which might be my new favorite Toto product!
To learn more about the TOTO S2 Washlet, read our article S2 vs. S5: Let’s Find the Right Washlet for You!
Product Details
- 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
- Convenient arm control panel
- 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
Since 1917, TOTO has been a global leader in bathroom innovation, known for superior quality, comfort, and design.
Additional Information
- Brand: TOTO
- MPN: SW3346#01
- Shape: Elongated
- Color: Cotton White
- Power Supply: 120V AC, 60 Hz
- Power Consumption: 1273W
- Maximum Power Consumption: 1428W
- Water Pressure Range: 7.25 PSI minimum to 108.75 PSI maximum
TOTO S2 Washlet FAQ
Can I install the TOTO S2 myself, or do I need a plumber?
TOTO Washlet S2 installation typically involves removing the existing toilet seat, installing the mounting plate, connecting the water supply hose, and plugging the unit into a grounded electrical outlet. However, if an outlet is not already available near the toilet, an electrician may be needed before installation.
Does the TOTO WASHLET S2 require a dedicated electrical outlet?
The S2 requires a grounded 120V electrical outlet near the toilet. While it does not necessarily require a dedicated circuit in every installation, the outlet should meet electrical requirements and be properly grounded. If you do not have an outlet near your toilet, electrical work may be required before installing the Washlet.
Will the S2 Elongated Washlet fit my existing toilet?
This Washlet was designed to fit many standard elongated toilets, but compatibility depends on the toilet shape, mounting hole spacing, and available clearance behind the toilet. Before installation, check that your toilet is compatible and that there is enough space for the WASHLET seat and water connection.
Does TOTO's S2 Washlet come with everything needed for installation?
TOTO provides the main installation components needed to connect the seat to your toilet, including the mounting hardware and water connection components. However, additional work may be required if your bathroom does not already have a nearby electrical outlet.
Does the Washlet S2 have a water tank or does it heat water instantly?
The SW3346#01 uses an instant water heating system to provide warm cleansing water without requiring a connection to your home’s hot water supply. This allows for a simpler installation compared to traditional bidet systems that require additional plumbing.
