When it comes to luxury and cleanliness in the bathroom, TOTO Washlets set the gold standard. Whether you’re upgrading your own toilet or helping a customer choose the best bidet seat for their home, it helps to understand the differences between the various models.
They offer a range of washlets packed with features like heated seats, instant water heating, customizable wash settings, and even auto-flush on select models. But which one is right for you?
To help simplify your decision, we’ve broken down the features of five current models (S2, S5, S7, S7A) along with a brief look at a few discontinued favorites. The full TOTO Washlet comparison chart will help you quickly see each model at a glance and the benefits of each option.
Current TOTO Washlet Models
The New Generation: S2 and S5
TOTO has recently updated its lineup, replacing the beloved C5 and C2 models with the new S2 and S5 Washlets. So, what's new? The S-series introduces a sleeker, more modern design while building upon the features that made the C-series so popular. Let's take a look.
S2 Washlet
The S2 is the new entry-point to the washlet family, replacing the C2. It’s a fantastic starter option that packs essential features into a clean design. One of its most user-friendly features? The attached side control panel, which means you'll never have to search for a misplaced remote. It offers core functions like:
- A pre-heated water tank that provides an initial supply of warm water for each use.
- Front and rear cleansing with adjustable pressure.
- A comfortable heated seat.
- Three settings for the air dryer and water temperature.
- PREMIST® function, which sprays the bowl before use to prevent waste from sticking.
- Attached side panel for easy control.
The S2 is the ideal choice for anyone seeking the renowned quality and hygiene of a TOTO bidet seat at an accessible price point.
S5 Washlet
Stepping up, the S5 replaces the C5 and introduces a significant upgrade in both functionality and aesthetics. The most noticeable difference is the move from a side panel to a slim, wireless remote control. This not only gives the bathroom a more modern feel but also adds a layer of convenience. This includes all the features of the S2, plus:
- A sleek wireless remote control.
- Two user presets to save your favorite settings.
- EWATER+® technology, which automatically sanitizes the wand after each use.
- A more refined, low-profile design.
If you're looking for greater convenience, a cleaner look, and the added hygiene of EWATER+®, the S5 is an excellent investment. We highly recommend this model for those who want a blend of advanced features and great value.
S7 Washlet
The S7 is part of TOTO’s latest generation and brings luxury into everyday use. Key features include:
- Instant water heating
- Full Ewater+ coverage (wand, bowl, under seat)
- 4 user presets
- 5 settings for everything: air, seat, and water temp
- Remote control
- Night light for added visibility
It’s a high-performance option for those who want comfort and control.
S7A Washlet
Lastly, our top pick is the S7A. This is the flag ship model from TOTO, the best of the best, and the ultimate choice. It offers everything you love about the S7, plus advanced automation features for a truly hands-free experience. Additional features include:
- Auto open/close lid
- Auto-flush option (when paired with compatible toilets)
- All other S7 features included
This is the top-tier TOTO Washlet for a truly hands-free bathroom experience.
Discontinued TOTO Washlet Models
C2 Washlet
A solid entry-level bidet seat with a built-in side control panel so you'll never loose the remote. The C2 offers essential features like:
- Immediate warm water from the pre-heated tank, but the warm water supply is finite for each use
- Front and rear wash
- Heated seat
- 3 air dryer and temperature settings
- Premist bowl cleaning
- Side panel controls
Ideal for those who want an affordable, no-frills option that still delivers Toto quality and hygiene.
C5 Washlet
The C5 steps up from the C2 with a few key upgrades:
- Remote control instead of a side panel
- User presets (up to 2)
- A more refined design and interface
If you're looking for more convenience and a sleeker look, the C5 is worth the upgrade. We love recommending this model to people who are looking for a bidet seat.
K300 Washlet
The K300 strikes a perfect balance between the entry-level C2 and the high-end S7A. It offers a noticeable step up in performance and comfort without reaching the premium price point of the S7 or S7A. Take things to the next level with:
- Instant water heating
- A slimmer design (On-Demand Heating: Instead of storing a reservoir of heated water (like older bidet models or traditional water heaters), the K300 heats the water as it flows through the unit.)
- Ewater+ wand sanitation
- 2 user presets
- 3 settings for air dryer, seat, and water temp
Great for smaller bathrooms or minimalist setups where space-saving matters. Not to mention this is the first entry in the line up with Toto’s eWater+.
What About the Other Discontinued Models?
You may have seen the TOTO S550E, S500E, S350E, and S300E in past product listings or reviews. While these models have been discontinued, they were highly rated and packed with features.
If you’re looking for a current TOTO Washlet that matches what those models offered, the S7 and S7A are your best bet. They are the natural successors in terms of function and style—and in some cases, even better.
Which TOTO Washlet Should You Choose?
If you’re focused on budget: Start with the C2 or C5.
Looking for a slim, tankless option: Check out the K300.
Want top-of-the-line features: Go with the S7 or S7A.
No matter your budget or priorities, these models bring cleanliness, comfort, and high-tech convenience to your daily routine.
Compare All TOTO Washlets Side by Side
Right click to save the chart below for a quick-reference guide to features across all major models we offer:
TOTO Washlet Comparison Guide
| Features | S7A | S7 |
K300 Discontinued |
S5 | S2 | C5 Discontinued |
C2 Discontinued |
|---|---|---|---|---|---|---|---|
| Elongated / Round | Both | Both | Elongated | Both | Both | Both | Both |
| Water Heating | Instant | Instant | Instant | Instant | Instant | Tank | Tank |
| Ewater+ | Wand, Bowl, Under Seat | Wand, Bowl, Under Seat | Wand | Wand | Wand | Wand | Wand |
| Front / Rear Wash | ✔ | ✔ | ✔ | ✔ | ✔ | ✔ | ✔ |
| Wide Front Wash | ✔ | ✔ | — | — | — | — | — |
| Heated Seats | ✔ | ✔ | ✔ | ✔ | ✔ | ✔ | ✔ |
| Pulse / Oscillation | ✔ | ✔ | ✔ | — | — | ✔ | — |
| Air Dryer Settings | 5 Settings | 5 Settings | 3 Settings | 3 Settings | 3 Settings | 3 Settings | 3 Settings |
| Air Dryer / Deodorizer | ✔ | ✔ | ✔ | ✔ | ✔ | ✔ | ✔ |
| Bowl PreMist | ✔ | ✔ | ✔ | ✔ | ✔ | ✔ | ✔ |
| User-Presets | 4 Users | 4 Users | 2 Users | 4 Users | — | 2 Users | — |
| Seat Temp Settings | 5 Settings | 5 Settings | 3 Settings | 3 Settings | 3 Settings | 3 Settings | 3 Settings |
| Water Temp Settings | 5 Settings | 5 Settings | 3 Settings | 3 Settings | 3 Settings | 3 Settings | 3 Settings |
| Auto-Open / Close | ✔ | — | — | — | — | — | — |
| Auto-Flush Option | ✔ | ✔ | — | — | — | — | — |
| Energy Saving Timer | 6, 9 Hrs | 6, 9 Hrs | 6, 9 Hrs | 6, 9 Hrs | 6, 9 Hrs | 6, 9 Hrs | 6, 9 Hrs |
| Night Light | ✔ | ✔ | — | ✔ | ✔ | — | — |
| Remote / Side Panel | Remote | Remote | Remote | Remote | Side | Remote | Side |
| Comparable Model | — | — | — | — | — | S5 | S2 |
Need Help Choosing?
Not sure which model is right for your setup? Reach out to our product experts! We’re happy to walk you through the details and make sure you find the perfect match.
Final Thoughts
Whether you’re looking for an affordable first bidet seat or a top-of-the-line smart washlet, TOTO offers a model to fit every need and budget. The S2 and S5 provide excellent everyday comfort, and the S7 and S7A deliver the ultimate in luxury and automation. No matter which model you choose, you’ll enjoy the signature cleanliness, comfort, and quality that make TOTO Washlets a trusted favorite worldwide.
Still not sure which one is right for you? Don’t hesitate to contact us, we’re here to help you find the perfect fit for your bathroom.
