If you’re choosing between the Brondell Swash 1400 and the TOTO Washlet S5, you’re looking at two of the most respected heated bidet seats on the market right now.
Both pack in endless warm water, a wireless remote, and luxury-level features — but they take very different approaches, and one of them is almost certainly a better fit for you.
| Feature | Brondell Swash 1400 | TOTO Washlet S5 (SW3446) |
|---|---|---|
| Image |  |
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| Dimensions (L x W x H) | 20.43″ x 15.2″ x 5.75″ | ~20.9″ x 15.1″ x 5.5″ |
| Water Heating | Ceramic core (endless warm water) | Instantaneous tankless (endless warm water) |
| Nozzle | Dual stainless steel (Nozzle Clean+) | Single wand (EWATER+ sterilization) |
| User Presets | 2 user presets | 4 user presets |
| Self-Cleaning / Sterilization | Nozzle Clean+ (nanotechnology) | EWATER+ electrolyzed water + PREMIST |
| Nightlight | Blue LED nightlight | White bowl nightlight |
| Warranty | 3-year limited | 1-year limited |
| Buy Now |  |
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1. Brondell Swash 1400 Luxury Bidet Toilet Seat
The Brondell Swash 1400 is the brand’s flagship bidet seat — and it earns that title with a dense feature list that punches well above its price class.
It’s built specifically for the North American bathroom with a ceramic-core heating system that delivers continuous warm water without ever running cold, making it one of the top contenders in the warm water and dryer category.
Features
- Dual stainless-steel nozzles with Nozzle Clean+ nanotechnology sterilization
- Endless warm water with four temperature settings
- Seven adjustable nozzle positions plus oscillation and spray width control
- Heated seat, warm air dryer, replaceable deodorizer
- Blue LED ambient nightlight
- 2 programmable user presets and one-touch auto mode
- Wireless remote with magnetic wall cradle; 3.5′ power cord
- Available in elongated and round, white and biscuit colors
- 3-year limited warranty
Pros
- Best-in-class warranty at 3 years — significantly longer than most competitors
- Dual nozzle system means total separation between rear and front wash for better hygiene
- Seven nozzle positions give you the most precise spray targeting on the market
- Sleek hidden-pocket design conceals all water and power connections
- Available in round shape too — great if your toilet isn’t elongated
Cons
- Only 2 user presets (vs 4 on the S5) — less convenient for multi-person households
- Some users report an initial brief burst of cold water before the ceramic core catches up
- No bowl pre-mist technology; the toilet bowl may need more frequent manual cleaning
If you want a bidet seat with exceptional customization, a market-leading warranty, and dual nozzles for maximum hygiene, the Swash 1400 is hard to beat — especially for women’s hygiene needs where separate front-wash nozzles matter most.
Check its current price on Amazon
2. TOTO Washlet S5 Electronic Bidet Seat (SW3446)
The TOTO Washlet S5 is the 2025 replacement for the now-discontinued C5, and it’s an upgrade in nearly every way — slimmer profile, true instant water heating, and four user presets instead of two.
TOTO named it their top S-Series model under the S7, and Wirecutter named it the best bidet seat of 2025, making it one of the best bidets for existing toilets you can buy right now.
Features
- Instantaneous tankless water heating — endless warm water from the first second
- PREMIST technology: mists the bowl before every use to prevent waste from sticking
- EWATER+ electrolyzed water self-cleans the wand before and after every use
- Heated SoftClose seat with 5 temperature settings
- Warm air dryer with 5 temperature settings; air deodorizer
- Bowl-illuminating nightlight; auto energy-saver mode
- 4 programmable user presets; slim wireless remote with wall cradle
- WASHLET+ compatible — concealed connections for select TOTO toilets
- 1-year limited warranty
Pros
- PREMIST + EWATER+ means the bowl and the wand both self-clean — far less manual scrubbing
- 4 user presets is the most in this price tier — ideal for families
- Wirecutter’s 2025 top pick — extensively tested and independently validated
- Slimmer, sleeker profile than its predecessor and easier to keep clean due to seamless design
- TOTO’s reliability reputation is unmatched — the world’s largest plumbing manufacturer
Cons
- Only 1-year warranty — noticeably shorter than the Swash 1400’s 3-year coverage
- EWATER+ wand cleaning only (not the bowl or under the seat like the S7/S7A)
- Single-wand design rather than dual nozzles — front and rear come from the same wand
If you trust brand-name engineering, want the bowl to stay cleaner with less effort, and have a multi-person household that benefits from four individual presets, the TOTO S5 is an outstanding choice — especially if you’ve been comparing it to other self-cleaning bidets.
Check its current price on Amazon
Warm Water Heating: Ceramic Core vs Instantaneous
Both seats deliver endless warm water, but they do it differently.
The Brondell Swash 1400 uses a ceramic-core heating system that stores a small volume of heated water and maintains it continuously — it’s fast, reliable, and has been the Swash’s signature technology for years.
The TOTO S5 uses fully instantaneous tankless heating, meaning there’s zero pre-stored water — the moment you activate the wash, the water is already warm.
In practice, most users won’t notice a huge difference, but the S5’s instantaneous system is considered the more modern approach and eliminates even the brief warm-up delay some Swash users have reported.
Winner: TOTO Washlet S5 — true instantaneous heating is the more advanced technology, with no warm-up wait whatsoever.
Nozzle System and Self-Cleaning
This is where the two products take very different philosophies.
The Brondell Swash 1400 goes with dual stainless-steel nozzles — one dedicated to rear wash and one to front feminine wash — with Nozzle Clean+ nanotechnology that sterilizes the nozzle before and after each use.
The TOTO S5 uses a single wand with EWATER+, which electrically transforms tap water into a mild sterilizing agent to clean the nozzle inside and out before and after every use.
On top of that, PREMIST sprays the bowl before you sit, which actively prevents waste from adhering to the porcelain — something the Swash 1400 completely lacks.
Both systems keep the nozzle hygienic, but TOTO’s PREMIST gives it a meaningful advantage for overall bowl cleanliness — you’ll spend less time scrubbing.
If dual nozzle separation matters to you for hygiene reasons, the Swash 1400 wins that point.
Winner: Draw — Swash 1400 for dual nozzle separation; TOTO S5 for bowl-level cleanliness via PREMIST.
Customization and User Presets
The Brondell Swash 1400 gives you seven adjustable nozzle positions, plus control over spray width, oscillation, pressure, water temperature, seat temperature, and dryer temperature.
You can save two of those combinations as user presets and activate either with one tap — or use the auto mode for a fully hands-free wash-and-dry cycle.
The TOTO S5 offers similar spray adjustability but gives you four user presets — double what the Swash allows.
For a single user, two presets is plenty.
For a couple or family sharing the same bathroom, four presets is a real convenience — no one needs to reset the settings each time they sit down.
Learn more about how these features stack up across the full bidet toilet seat comparison chart.
Winner: TOTO Washlet S5 — four user presets is genuinely more practical for multi-person households.
Warranty and Long-Term Value
This category goes decisively to the Brondell Swash 1400.
It comes backed by a 3-year limited warranty — one of the longest in the electric bidet seat category.
The TOTO S5 offers only a 1-year limited warranty, which is standard but noticeably shorter.
Given that these are premium-priced seats, the Swash 1400’s extra two years of coverage is meaningful protection against defects.
You can also explore the full range of best bidet brands to understand each company’s support reputation before committing.
Winner: Brondell Swash 1400 — 3-year warranty is a significant advantage for long-term peace of mind.
Installation and Fit
Both seats are DIY-installable in under an hour and require a nearby GFCI outlet.
The Brondell Swash 1400 is available in both elongated and round shapes, in white and biscuit colors — giving you more flexibility if your bathroom setup is non-standard.
The TOTO S5 (SW3446) is available in elongated only, with a round version (SW3445) sold separately.
The S5 also has WASHLET+ compatibility for concealed plumbing integration with select TOTO toilets — a nice bonus if you’re building around a TOTO ecosystem.
For more guidance on choosing the right seat shape, see our guide to best bidets for round toilets or our overview of bidet toilets vs bidet seats.
Winner: Draw — both install easily; Swash 1400 has a slight edge in color variety; S5 has the WASHLET+ ecosystem bonus.
Verdict: Which One Should You Buy?
Both the Brondell Swash 1400 and the TOTO Washlet S5 are excellent bidet seats in the premium category — but they serve slightly different buyers.
If you want the longest warranty protection, dual dedicated nozzles, the most nozzle position control, and a bidet that’s been refined over many years specifically for North American bathrooms, the Brondell Swash 1400 is your pick.
If you want TOTO’s world-leading brand reliability, PREMIST bowl hygiene that genuinely keeps your toilet cleaner, four user presets for the whole family, and a Wirecutter-validated 2025 top pick, the TOTO Washlet S5 is the one to get.
Buy the Brondell Swash 1400 if…
- You want the strongest warranty (3 years) and best long-term value protection
- You prioritize dual separate nozzles for rear and front wash
- You need a round toilet option or prefer a biscuit color
- You want maximum spray customization with 7 nozzle positions
Buy the TOTO Washlet S5 if…
- You want PREMIST bowl hygiene and EWATER+ wand sterilization together
- You have multiple household members who each want their own saved settings (4 presets)
- You trust TOTO’s engineering legacy and the Wirecutter’s independent recommendation
- You’re building around a TOTO toilet and want WASHLET+ concealed plumbing
FAQ
Is the TOTO Washlet S5 a replacement for the C5?
Yes. TOTO officially discontinued the C5 in late 2025 and replaced it with the S5. The S5 improves on the C5 with true instantaneous heating (vs the C5’s tank system), a slimmer profile, four user presets (vs two), and a nightlight. If you were considering the C5, the S5 is the current and better version to buy. You can read our full TOTO C series comparison for historical context on the lineup.
Does the Brondell Swash 1400 have PREMIST like TOTO?
No. PREMIST is a TOTO-exclusive feature that pre-mists the toilet bowl before use to prevent waste from adhering to the porcelain. The Brondell Swash 1400 does not have an equivalent. It cleans the nozzle itself well with Nozzle Clean+ technology, but the bowl hygiene advantage belongs to the TOTO S5.
Which bidet is better for seniors?
Both are excellent for older users, but the TOTO S5’s four presets mean a caregiver can set personalized settings once and the senior never has to adjust them again. The Swash 1400’s auto mode achieves something similar for a single user. See our dedicated guide to best bidets for seniors for more tailored recommendations.
Can I install either of these without a plumber?
Yes. Both seats are designed for straightforward DIY installation — you attach the seat to the toilet, connect the water line via the included T-valve, and plug into a nearby GFCI outlet. Most people complete the installation in 30–45 minutes without any professional help. If you’re new to bidet seats, the handheld bidet vs bidet seat guide explains the differences before you commit.
Conclusion
The Brondell Swash 1400 vs TOTO Washlet S5 is one of the best head-to-head matchups in the premium bidet seat category — and there’s no wrong answer here.
The Swash 1400 wins on warranty, dual nozzle design, and nozzle-position versatility.
The TOTO S5 wins on bowl hygiene, user presets, brand prestige, and independent acclaim.
For most households upgrading for the first time, the TOTO S5 is the slightly safer bet — it’s fresher, it’s been independently tested, and the PREMIST feature alone is worth the consideration.
For buyers who want maximum customization control and the peace of mind of a 3-year warranty, the Brondell Swash 1400 remains a class act.
Browse our full bidet comparisons archive for more head-to-head guides, or check out the best bidets for home use roundup if you’re still exploring your options.
