If you’re comparing the TOTO Nexus and the brand-new TOTO Aurora, you’re weighing a proven one-piece workhorse against TOTO’s most ambitious toilet launch in years.
Both are skirted, WASHLET+ ready one-piece toilets — but the flushing technology, hygiene stack, and design language are genuinely different, and the right pick depends on what you actually value.
| Feature | TOTO Nexus | TOTO Aurora |
|---|---|---|
| Image |  |
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| Model Number | MS642234CEFG#01 | MS686234CEFG#01 |
| Dimensions (L × W × H) | 28-9/16″ × 17-1/2″ × 27″ | Confirm via TOTO spec sheet |
| Flush System | TORNADO FLUSH® (1.28 GPF) | INTEGRAVITY™ + TORNADO FLUSH® (1.28 GPF) |
| Surface Tech | CEFIONTECT® | CEFIONTECT® + PREMIST® + EWATER+® |
| Design | Skirted one-piece, clean lines | Skirted one-piece, flared sculptural silhouette |
| Rough-In | 12″ (14″ optional) | 12″ (10″ or 14″ optional) |
| WASHLET+ Ready | Yes (T40 WASHLET+) | Yes (T40 WASHLET+) |
| ADA Compliant | Yes | Yes |
| Buy Now |  |
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1. TOTO Nexus One-Piece Elongated 1.28 GPF Toilet (MS642234CEFG#01)
The TOTO Nexus has been a quiet favorite in the premium toilet market for years, and it’s easy to see why.
It combines a sleek skirted one-piece design with TOTO’s legendary TORNADO FLUSH and CEFIONTECT glaze — giving you a toilet that looks great, cleans efficiently, and barely needs scrubbing.
Features
- TORNADO FLUSH® system: hole-free rim with dual nozzles for a powerful centrifugal rinse at 1.28 GPF
- CEFIONTECT® glaze: ultra-smooth ion-barrier surface that resists waste, mineral deposits, and staining
- Fully skirted design: no exposed trapway, making exterior cleaning effortless
- Universal Height: ADA-compliant at 16.75″ seat height for comfortable use across all ages
- WASHLET+ ready: designed to conceal the power cord and water supply line for a seamless bidet upgrade
- Auto Flush compatible: pairs with TOTO’s Auto Flush kit when used with a compatible WASHLET+ seat
- 12″ rough-in (14″ optional adapter available); includes slim SoftClose® SS234 seat
Pros
- Proven, well-documented track record with excellent long-term reliability
- Competitive price point for a fully skirted TOTO one-piece
- CEFIONTECT glaze genuinely reduces how often you need to clean the bowl
- Slim SoftClose seat included — no lid slamming ever again
- Wide WASHLET+ seat compatibility makes upgrading to a bidet seat easy later
Cons
- No built-in PREMIST or EWATER+ bowl hygiene technology
- Flushing relies solely on TORNADO FLUSH — no dual-tank advantage over waste layering in the bowl
- Design language is clean and timeless, but not as sculptural as TOTO’s newer collections
- Rough-in adapts to 14″ but not 10″ — fewer options for older bathrooms
If you want a battle-tested, no-fuss TOTO one-piece that delivers reliable flushing, easy cleaning, and a competitive entry into the WASHLET+ ecosystem, the Nexus is a smart long-term buy.
You can read more about how the Nexus stacks up in a three-way fight in our TOTO Drake vs Nexus vs Aquia IV comparison, and see how it differs from TOTO’s two-piece line in our dedicated TOTO Drake vs Nexus guide.
Check its current price on Amazon
2. TOTO Aurora One-Piece Elongated 1.28 GPF Toilet (MS686234CEFG#01)
The TOTO Aurora is TOTO’s most significant toilet launch in recent years — a from-the-ground-up redesign built around the all-new INTEGRAVITY SYSTEM™ flushing engine.
It isn’t just a styling update over the Nexus; the Aurora introduces a genuinely new dual-tank, dual-valve flush architecture that works alongside TORNADO FLUSH to improve bowl cleaning performance — plus PREMIST and EWATER+ technologies that aren’t found on any previous TOTO toilet at this tier.
Features
- INTEGRAVITY SYSTEM™: dual-tank, dual-valve gravity-driven flush engine that sequences rim wash and siphon jet for controlled, efficient cleaning — a first for this toilet category
- TORNADO FLUSH®: works in tandem with INTEGRAVITY for a powerful centrifugal rinse at 1.28 GPF
- CEFIONTECT®: the same exceptional ceramic glaze found on the Nexus that resists waste adherence and mold
- PREMIST®: automatically wets the bowl surface before use to prevent waste from sticking — a feature usually reserved for integrated bidet toilets
- EWATER+®: electrolyzes water to create a sterilizing mist that keeps the bowl and wand area hygienically clean with no harsh chemicals
- Fully skirted flared silhouette: a sculptural, nature-inspired exterior design that’s distinct from any previous TOTO toilet
- WASHLET+ and Auto Flush ready; 12″ rough-in (10″ or 14″ adapters available); SoftClose SS234 seat included
Pros
- Entirely new INTEGRAVITY flushing technology represents a meaningful engineering leap from the Nexus
- PREMIST + EWATER+ deliver integrated bidet-toilet-level hygiene without requiring a WASHLET seat
- More rough-in flexibility than the Nexus — 10″, 12″, or 14″ options
- Sculptural design is genuinely striking — one of the most visually distinctive toilets TOTO has ever released
- Same WASHLET+ compatibility as Nexus, so upgrading to an S5, S7, or S7A seat is seamless
Cons
- Brand new product with a shorter track record than the long-proven Nexus
- Priced higher than the Nexus due to its advanced technology stack
- The flared silhouette, while beautiful, is a strong design statement — not for every aesthetic
- Exact published dimensions aren’t yet widely available — verify with the TOTO spec sheet before purchasing for tight spaces
If you want the cutting edge of what TOTO makes in a floor-mounted toilet — with superior bowl hygiene built in before you even add a WASHLET seat — the Aurora is a compelling choice for a bathroom that’s meant to impress.
If you’re interested in how the Aurora pairs with TOTO’s best bidet seats, our TOTO C5 vs S7 guide and our TOTO C5 vs S5 comparison break down exactly which WASHLET seat fits which lifestyle.
Check its current price on Amazon
Flush Performance: INTEGRAVITY vs TORNADO FLUSH
The Nexus uses TOTO’s proven TORNADO FLUSH — a dual-nozzle, hole-free rim design that sends water spinning in a centrifugal rinse pattern at 1.28 GPF.
It’s genuinely effective, and CEFIONTECT glaze means waste rarely sticks in the first place.
The Aurora takes things further with the new INTEGRAVITY SYSTEM — a dual-tank, dual-valve architecture that sequences a rim wash and siphon jet separately, then finishes with TORNADO FLUSH.
The result is a more deliberate, layered flush that covers the bowl in two stages rather than one, directing more water around the bowl at higher velocity.
For most households, the Nexus flushes powerfully and cleanly enough to never be an issue.
But if you want TOTO’s newest and most capable flush technology, the Aurora is the clear step forward.
Winner: Aurora — the INTEGRAVITY + TORNADO FLUSH combination is a genuine advancement over single-stage TORNADO FLUSH alone.
Bowl Hygiene: Passive vs Active Self-Cleaning
This is where the two toilets differ most meaningfully.
The Nexus relies on CEFIONTECT ceramic glaze — an extraordinary passive surface coating that makes it extremely difficult for waste, mold, and mineral deposits to adhere to the bowl.
Paired with TORNADO FLUSH, the bowl stays noticeably cleaner between scrubs than a standard toilet, and most users find they clean it far less often.
The Aurora adds two active hygiene systems on top of CEFIONTECT: PREMIST, which wets the bowl surface before every use so waste slides away cleanly, and EWATER+, which automatically mists the bowl with electrostatically charged water after every flush.
These are the same technologies TOTO uses in integrated bidet toilets like the Neorest AS — and they make a measurable difference in keeping the bowl clean without scrubbing.
If reducing toilet cleaning effort is a priority, the Aurora’s active hygiene stack is genuinely hard to match at this price tier.
Winner: Aurora — PREMIST + EWATER+ on a standard floor-mount toilet is exceptional and not found on the Nexus at any price point.
Design & Build Quality
Both toilets are fully skirted one-piece elongated toilets built in vitreous china to TOTO’s meticulous quality standards.
The Nexus has a clean, minimalist skirted profile with straight lines and a refined, understated look that blends naturally into most bathroom styles.
It’s the kind of toilet that looks expensive and intentional without demanding attention.
The Aurora takes a completely different approach — its flared, sculptural silhouette is influenced by organic natural forms.
The exterior curves outward gently, making the Aurora look unlike any other TOTO toilet in the current lineup.
It’s the kind of design that works beautifully in a contemporary, design-forward bathroom renovation but may feel like too strong a statement in a traditional space.
Both include TOTO’s SoftClose SS234 slim seat and a left-hand chrome trip lever.
Both are ADA compliant at Universal Height.
Build quality is equally excellent on both — TOTO’s Japanese manufacturing standards apply across the lineup.
Winner: Tie — choose based on your aesthetic. The Nexus fits everywhere; the Aurora is a statement piece for modern bathrooms.
Installation & Compatibility
The Nexus fits a standard 12″ rough-in with a 14″ adapter available — this covers the vast majority of North American bathrooms.
The Aurora adds a 10″ rough-in option as well, making it compatible with older homes where plumbing may not fall on the standard spacing.
Both are WASHLET+ ready, meaning the bowl surface includes a channel to conceal the bidet seat’s power cord and water supply hose — giving the finished installation a clean, near-integrated look.
Both support TOTO’s Auto Flush kit when paired with a compatible WASHLET+ seat, giving you full hands-free operation without upgrading to a Neorest-level integrated toilet.
If you’re considering pairing either toilet with a WASHLET seat, our guide to the best toilets with bidet covers the full range of seat options worth pairing with a premium TOTO bowl.
DIY installation is straightforward on both — standard floor-mount, 12″ rough-in, and the included hardware makes it manageable for a competent DIYer.
Winner: Aurora — the additional 10″ rough-in option gives it a meaningful edge for older bathrooms and renovations.
Value for Money
The Nexus is the more established, more affordable of the two.
It delivers everything most buyers want in a premium one-piece TOTO toilet: powerful flushing, beautiful CEFIONTECT surfaces, a skirted design, and full WASHLET+ compatibility.
You’re not compromising on quality when you choose the Nexus — you’re simply getting the previous generation of TOTO’s flush and hygiene technology at a lower price.
The Aurora asks for more money and delivers more technology in return — most notably PREMIST, EWATER+, and the entirely new INTEGRAVITY flush system.
Whether that upgrade is worth it depends on how much you value reduced cleaning effort and the latest flush engineering.
For buyers who want the most advanced TOTO toilet short of a fully integrated Neorest, the Aurora’s price premium is justified.
For buyers who just want an excellent TOTO one-piece at a sharp price, the Nexus delivers that without apology.
Winner: Nexus — better value for most buyers; the Aurora wins on capability but costs more for it.
Verdict — Which One Should You Buy?
Buy the TOTO Nexus if… you want a proven, refined, beautifully made one-piece toilet at a more competitive price point, with TOTO’s trusted TORNADO FLUSH and CEFIONTECT glaze, full WASHLET+ compatibility, and a timeless design that fits any bathroom without demanding to be noticed.
The Nexus is the right pick for most buyers — it’s a fantastic toilet by any measure and remains one of the best one-piece designs TOTO makes.
Check its current price on Amazon
Buy the TOTO Aurora if… you want the absolute latest from TOTO — the new INTEGRAVITY flush engine, built-in PREMIST and EWATER+ bowl hygiene (features usually found only on integrated bidet toilets), a bold sculptural design, and more rough-in flexibility.
The Aurora is for buyers who don’t want to compromise on anything and want a toilet that genuinely stands out in a modern bathroom renovation.
Check its current price on Amazon
FAQ
Can I add a TOTO WASHLET bidet seat to both the Nexus and the Aurora?
Yes — both are TOTO T40 WASHLET+ compatible, meaning they’re designed to work with TOTO’s current bidet seat lineup including the S2, S5, S7, and S7A.
The WASHLET+ channel built into the bowl conceals the power cord and water supply hose, giving you a near-integrated look without replacing the entire toilet.
Our bidet toilet seat comparison chart can help you match the right WASHLET seat to either bowl.
What is the INTEGRAVITY SYSTEM and why does it matter?
The INTEGRAVITY SYSTEM is TOTO’s brand-new gravity-driven flush engine introduced with the Aurora toilet line.
Unlike the single-stage TORNADO FLUSH used on the Nexus, INTEGRAVITY uses a dual-tank, dual-valve architecture that sequences two distinct water actions — a rim wash and a siphon jet — in controlled sequence before the final TORNADO FLUSH centrifugal rinse.
The result is more water directed around the bowl at higher velocity, improved bowl coverage, and a cleaner flush overall.
It’s the most significant flushing advancement TOTO has introduced in their standard toilet lineup in years.
Does the TOTO Aurora have PREMIST and EWATER+ even without a WASHLET seat installed?
Yes — this is one of the Aurora’s most notable features.
PREMIST and EWATER+ are built into the Aurora toilet itself, not the bidet seat, so you get active bowl hygiene from the moment the toilet is installed regardless of whether you add a WASHLET seat.
On the Nexus, PREMIST and EWATER+ only become available if you add a compatible WASHLET seat like the TOTO S5 or TOTO S7.
Which toilet is better for a bathroom renovation vs a simple toilet replacement?
For a straightforward toilet replacement where you’re keeping everything else the same, the Nexus is ideal — it’s a proven product, widely available, well-priced, and fits standard 12″ rough-in installations without complication.
For a full bathroom renovation where design and cutting-edge performance are part of the brief, the Aurora is built for that context — its sculptural design makes a statement, and the INTEGRAVITY + PREMIST + EWATER+ combination delivers performance that pairs beautifully with a high-end WASHLET upgrade.
If you’re also considering an integrated bidet toilet for your renovation, our guide to the best toilet bidet combos and our highest rated bidet toilet roundup cover the full landscape of options above the Nexus and Aurora tier.
Conclusion
Both the TOTO Nexus and TOTO Aurora are exceptional one-piece toilets, and either will be a meaningful upgrade over a standard floor-mount toilet.
The Nexus wins on value, proven reliability, and timeless design — it’s the smart choice for most bathrooms and most buyers, and it’s been earning its reputation for years.
The Aurora wins on technology, innovation, and bowl hygiene — its INTEGRAVITY flush system and built-in PREMIST + EWATER+ combination are genuinely new and genuinely impressive, making it the right pick for buyers who want TOTO’s best standard toilet without stepping all the way into Neorest territory.
If you’re still deciding between a floor-mount toilet upgrade and a fully integrated smart toilet, our guides to the best toilets with bidet, the TOTO Neorest AS, and the best bidets for existing toilets will help you find exactly where you want to land in the range.
