TOTO S7A vs KS6: Which TOTO WASHLET Fits You?
The TOTO WASHLET lineup is known for bringing high-end comfort and cleanliness to bathrooms across the country. Two of the most talked-about models in 2025 are the TOTO S7A and the newer TOTO KS6 (replacing the TOTO K300).
When comparing the TOTO S7A vs KS6, it’s clear that both models offer a premium bathroom experience, but they cater to different needs and budgets. For TOTO, the S7A has held its place as it’s most advanced bidet seat, while the KS6 steps in as a modern, mid-range option that delivers many of the same core features at a lower price.
If you’re choosing between these two WASHLETs, this guide will help you compare their features, understand what sets them apart, and figure out which one is the better fit for your needs.
Washlet KS6 vs S7A: What’s the Difference?
| Feature | TOTO S7A | TOTO KS6 |
| Auto Open/Close Lid | ✅ | ❌ |
| Auto Flush (w/ compatible toilet) | ✅ | ❌ |
| EWATER+ Wand Cleaning | ✅ | ✅ |
| EWATER+ Bowl Cleaning | ✅ | ❌ |
| PREMIST | ✅ | ✅ |
| Heated Seat | ✅ | ✅ |
| Warm Air Dryer | ✅ (5 temps) | ✅ (5 temps) |
| Air Deodorizer | ✅ | ✅ |
| CLEAN RESIN Surfaces | ❌ | ✅ (wand and seat) |
| Seat Sensor | Touch | Pressure (hinge-based) |
| User Presets | 4 | 4 |
| Remote | Block-style multifunction | Slim, magnetic-mount |
| Night Light | Bowl + Side | Bowl only |
Shared Features of the S7A and KS6 Bidet Seats
Both the S7A and KS6 provide a luxurious set of core features:
- Instantaneous, tankless warm water
- Heated seat with adjustable temperature
- Warm air dryer with temperature control
- Rear and front cleansing with oscillating spray
- TOTO EWATER+ wand sanitization
- PREMIST bowl misting before use
- Automatic air deodorizer
- Night light
- Seamless seat design
- SoftClose lid and seat
- Remote control operation
- T40 compatibility (concealed connections with TOTO WASHLET+ toilets)
“The TOTO KS6 has stepped in to replace the discontinued Washlet K300 and sits squarely in the mid-range tier of TOTO’s lineup,” says John from Premier Bidets. “Think of it as the sweet spot for someone who wants tankless, instant warm water and a slim design without going all-in on every premium feature.”
TOTO KS6 vs S7A – Main Differences
1. Automatic Lid & Auto Flush
Only the TOTO S7A offers automatic lid opening and closing, as well as compatibility with TOTO’s auto flush system.
“If you want the most premium experience TOTO offers, the S7A is worth the investment,” says John. “The hands-free features make a big difference in everyday use.”
2. Bowl Cleaning with EWATER+
Both models clean the wand with EWATER+, but only the S7A also cleans the toilet bowl after every use.
3. CLEAN RESIN Surfaces
The KS6 includes CLEAN RESIN coating on the wand and seat to help resist grime and bacteria. The S7A does not include this feature.
“Once we explain CLEAN RESIN to customers, they really appreciate that added layer of hygiene,” John adds.
4. Remote Control Style
The S7A comes with a larger, multifunction block-style remote. The KS6 features a sleek horizontal remote with magnetic wall mount.
TOTO WASHLET S7A Remote
TOTO WASHLET KS6 Remote
5. Seat Sensor
The S7A uses a skin-detecting touch sensor, while the KS6 relies on a pressure sensor located in the seat hinge.
“As far as sensor differences, the average buyer doesn’t notice a meaningful difference,” says John. “Both work well in day-to-day use.”
Who Should Choose the TOTO KS6 or TOTO S7A?
Choose the S7A Washlet if you want:
- Full feature set with auto open/close and auto flush
- More refined user experience and spray comfort
- EWATER+ bowl cleaning
- A choice between Classic and Contemporary styles
Choose the KS6 Washlet if you want:
- Tankless instant warm water at a lower price point
- A slim, modern design with essential features
- CLEAN RESIN protection and a stylish remote
- Upgrading from the K300? Read our full breakdown of the TOTO KS6 vs K300 to see what’s been upgraded.
Final Thoughts
Both the TOTO KS6 and the TOTO S7A offer an exceptional WASHLET experience, but they’re built for different types of buyers.
The S7A is ideal for those who want every advanced feature TOTO offers, including touchless convenience and full EWATER+ cleaning.
The KS6, on the other hand, is perfect for shoppers who want modern design, instant warm water, and dependable performance without paying for extras they might not need.
“The Washlet KS6 gives you about 90% of what you need at a much lower price,” John says. “It fills the gap left by the K300, and it’s quickly becoming one of our top recommendations.”
Whichever one you choose, you’ll be upgrading to a bidet toilet seat that brings comfort, hygiene, and thoughtful design into your everyday routine.
Still have questions? Call us at 707‑297‑3991 or email sales@premierbidets.com and we’ll help you find the best WASHLET for your home.
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