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Best Luxury Integrated Smart Toilets: TOTO Neorest and Rivals (2026)

The TOTO Neorest RS wins — the only pick whose automatic cleaning reaches the bowl and under-seat rather than stopping at the wand, and the reason the premium over a bidet seat is defensible.

Editor-in-Chief & Methodology Owner · 14 min read · Updated July 2026

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The Short Answer

The TOTO Neorest RS wins because its EWATER+ system automatically cleans the wand, bowl, and under-seat after every use, which no rival here matches. The WASHLET+ Aquia IV with the S7A seat delivers the same bowl cleaning for considerably less, and the WOODBRIDGE B0970S anchors the entry tier.

Featured in this Guide

TOTO Neorest RS Smart Toilet

TOTO

Neorest RS Smart Toilet

4.0
OUR TOP PICK
  • Only pick whose EWATER+ cleaning covers wand
  • bowl
  • and under-seat after every use
TOTO WASHLET+ Aquia IV with S7A Bidet Seat

TOTO

WASHLET+ Aquia IV with S7A Bidet Seat

4.1
BEST VALUE
  • Same EWATER+ bowl cleaning for roughly half the Neorest outlay — but a two-piece bowl plus seat
  • not one integrated body
Kohler Innate Smart Toilet

Kohler

Innate Smart Toilet

3.7
BEST HANDS-FREE DESIGN
  • Motion-activated lid in a one-piece Kohler body
  • though its UV self-cleaning is documented for the wand surfaces only
WOODBRIDGE B0970S One-Piece Smart Tankless Toilet

WOODBRIDGE

B0970S One-Piece Smart Tankless Toilet

3.6
CHEAPEST ONE-PIECE ENTRY
  • A genuine tankless one-piece at the roster floor
  • with no automatic lid and no published bowl-sanitizing system

Head-to-Head: Sanitizing Reach, Lid, Flush, and the SHE Score

Bathroom
Chart

Smart Home ExplorerSmarthomeexplorer.com
TOTO Neorest RS Smart Toilet
TOTO Neorest RS Smart Toilet
TOTO WASHLET+ Aquia IV with S7A Bidet Seat
TOTO WASHLET+ Aquia IV with S7A Bidet Seat
Kohler Innate Smart Toilet
Kohler Innate Smart Toilet
WOODBRIDGE B0970S One-Piece Smart Tankless Toilet
WOODBRIDGE B0970S One-Piece Smart Tankless Toilet
Install BurdenWhat the bathroom must already have: a spare GFCI outlet, or an electrician adding a dedicated circuit.
1610
16.510
14.510
1810
SHE Integrated Toilet Premium ScoreComposite of five weighted factors; price-to-capability is the fifth, detailed in the methodology below.
18.810
18.210
16.310
15.910
Ecosystem FitWhat physically lands in the room — a single ceramic body, or a bowl plus a separate powered seat.
LimitedOne-piece integrated body
LimitedTwo-piece bowl + S7A seat
LimitedOne-piece integrated body
LimitedOne-piece tankless body
Bowl-Sanitizing Depth
10TOTO states EWATER+ auto-cleans the wand, bowl, and under-seat after every use — the deepest reach of the four picks her
9TOTO states EWATER+ cleans the bowl and wand after every use; the seat sheet carries no under-seat claim
4Kohler documents UV light cleaning the wand surfaces only — there is no published bowl-sanitizing claim for the Innate
2WOODBRIDGE publishes no UV or electrolyzed-water sanitizing row for any model in its own comparison sheet
Hands-Free Operation
9.5Touchless auto open and close lid plus automatic flush, both listed on TOTO's own specification sheet
8S7A adds an auto open and close lid plus Auto Flush, though the seat is a separate assembly on the bowl
9.5Motion-activated, hands-free opening and closing of the cover, stated directly on Kohler's specification sheet
5Auto flush and foot-sensor operation, but the automatic open/close lid row is unchecked for the B0970S
Flush Efficiency
101.0 GPF and 0.8 GPF TORNADO FLUSH — the lowest published dual-flush pair across the four picks here
7.51.28 GPF and 0.9 GPF DYNAMAX TORNADO FLUSH — a heavier full flush than the Neorest calculation rewards
7Dual-flush choice of 1.0 or 1.28 gpf, so the full flush lands above the Neorest pair on water use
7Published as a 1.0-1.28 GPF band rather than a fixed pair, which the formula scores mid-tier

Tap any pick to check its live price on Amazon.

Get notified when TOTO Neorest RS Smart Toilet drops below $4028:

Who Should Actually Pay Integrated Money?

A bidet seat bolts onto the bowl you already own, whereas an integrated smart toilet replaces that bowl entirely, and at the top of this roundup the Neorest RS runs 4.2x the price of a standalone TOTO S7A seat. That coefficient only becomes defensible if the additional expenditure purchases a capability the seat cannot independently deliver. In practice exactly one capability qualifies, and it is emphatically not the heated seat: it is whether the automatic cleaning system genuinely reaches the ceramic surface or instead terminates at the wand. We evaluated four live Amazon listings against a weighted composite, the SHE Integrated Toilet Premium Score, whose dominant factor is precisely that distinction.

Best Overall: TOTO Neorest RS Smart Toilet

7.9/10Consensus
Best Overall

TOTO Neorest RS Smart Toilet

TOTO Neorest RS Smart Toilet
$4,476.60

(Current price, subject to change)

EWATER+ cleaning of wand, bowl, and under-seat after every use
Touchless auto open and close lid
TORNADO FLUSH at 1.0 GPF / 0.8 GPF
One-piece body with an integrated bidet seat
AC 120 V, 60 Hz, 1.29 kW power rating

The TOTO Neorest RS Smart Toilet earns the top composite of 8.8 on the SHE Integrated Toilet Premium Score, and the practical translation for your particular bathroom is unusually concrete. TOTO's specification documentation states that EWATER+ automatically cleans the wand, bowl, and under-seat after every individual use, which represents a materially deeper sanitizing reach than any configuration restricted exclusively to the spray wand. Compared to the Kohler Innate, whose documented ultraviolet cleaning covers only the wand surfaces, that distinction independently justifies the dominant coefficient in our weighted formula.

Its TORNADO FLUSH is rated at 1.0 GPF and 0.8 GPF, the lowest normalized pair evaluated in this roundup, which yields the smallest water volume per flush cycle of anything evaluated here. Installation requirements are comparatively the more restrictive consideration, because TOTO rates the appliance at AC 120 V, 60 Hz, 1.29 kW and supplies a cord measuring 3.9 ft with three prongs, so a grounded receptacle has to already sit within reach.

What We Love

  • Only pick whose manufacturer documents cleaning that reaches the bowl and under-seat, not merely the wand
  • Lowest published dual-flush pair of the four picks here at 1.0 GPF and 0.8 GPF
  • Touchless lid and automatic flush remove the two touchpoints buyers care about
  • Sold and shipped by Amazon itself, so the buy path is not a thin third-party listing

What Could Be Better

  • At $4,476.60 it is 6.5x the WOODBRIDGE B0970S in this roundup
  • No ACTILIGHT — that lid technology does not appear on the RS specification sheet
  • Draws 1.29 kW, so the outlet behind the toilet has to be a real one

The Verdict

If the reason you are shopping this tier is a bowl that cleans itself rather than a warmer seat, the TOTO Neorest RS Smart Toilet fits the brief without compromise. Its 8.8 composite reflects the only EWATER+ implementation here that TOTO documents as reaching wand, bowl, and under-seat. You pay a genuine premium for that reach.

Best Value: TOTO WASHLET+ Aquia IV with S7A Bidet Seat

8.1/10Consensus
Best Value

TOTO WASHLET+ Aquia IV with S7A Bidet Seat

TOTO WASHLET+ Aquia IV with S7A Bidet Seat
$2,000-$2,300

(Current price, subject to change)

S7A seat with EWATER+ cleaning of bowl and wand
Auto open and close lid plus Auto Flush
DYNAMAX TORNADO FLUSH at 1.28 GPF / 0.9 GPF
CEFIONTECT ceramic glaze on the Aquia IV bowl
Two-piece elongated body, WASHLET+ concealed supply

The TOTO WASHLET+ Aquia IV with S7A Bidet Seat earns a composite of 8.2, positioning it second in this roundup, and it is the configuration that makes the pricing argument uncomfortable for everything above it. TOTO's S7A documentation states that EWATER+ cleans the bowl and wand after every use, which is precisely the headline capability the Neorest tier is marketed on, delivered on a listing the Neorest RS prices at 2.1x. That comparative economy is why the price-to-capability factor independently scores it highest of the two TOTO entries evaluated here.

Where the calculation penalizes it is integration and flush efficiency. This is a two-piece bowl paired with a separate powered seat rather than one continuous ceramic body, and its DYNAMAX TORNADO FLUSH is rated 1.28 GPF and 0.9 GPF versus the Neorest 1.0 and 0.8 pair. TOTO additionally publishes an 8 psi flowing minimum for this particular toilet body, marginally above the equivalent Neorest requirement.

What We Love

  • Delivers TOTO EWATER+ bowl cleaning on a listing the Neorest RS prices at 2.1x
  • CEFIONTECT glaze minimizes waste from sticking to porous ceramic surfaces, per TOTO
  • S7A brings the auto open and close lid down into the mid tier
  • Sold and shipped by Amazon, In Stock at the time of our check

What Could Be Better

  • A two-piece bowl with a separate powered seat, not one integrated ceramic body
  • 1.28 GPF full flush uses more water than the Neorest pair
  • No under-seat cleaning claim on the S7A specification sheet

The Verdict

For a reader who wants the self-cleaning bowl and can live without a single-piece silhouette, the TOTO WASHLET+ Aquia IV with S7A Bidet Seat lines up with what you actually need. The 8.2 composite reflects EWATER+ bowl cleaning at 3.1x the WOODBRIDGE's price rather than 6.5x. Be clear-eyed that this is a bowl plus a seat, so a visible seam remains.

Best Hands-Free Design: Kohler Innate Smart Toilet

7.4/10Consensus
Best Hands-Free Design

Kohler Innate Smart Toilet

Kohler Innate Smart Toilet
$3,600-$3,900

(Current price, subject to change)

Motion-activated, hands-free opening and closing of the cover
One-piece elongated body with the bidet built in
Dual-flush choice of 1.0 or 1.28 gpf
UV self-cleaning of the wand surfaces
One dedicated GFCI circuit at 120 V, 15A

The Kohler Innate Smart Toilet earns a composite of 6.3 on the SHE Integrated Toilet Premium Score, and the gap versus the TOTO entries is almost entirely one factor. Kohler's specification sheet states that the self-cleaning function uses UV light to automatically clean the wand surfaces. There is no bowl-sanitizing claim published alongside it, so the normalized bowl-depth tier scores well below either TOTO.

Its hands-free credentials are genuine. Kohler documents motion-activated, hands-free opening and closing of the cover, which produces the same touchless experience as the Neorest lid. At 5.5x the WOODBRIDGE it is also the pricier one-piece body here. The install burden is the heavier trade. Kohler requires one dedicated circuit protected with a Class A GFCI at 120 V, 15A, which is a different job from plugging into an existing receptacle, and no minimum supply pressure appears on the sheet at all.

What We Love

  • Motion-activated lid is stated on Kohler's own specification sheet, not merely in listing copy
  • A true one-piece body at 5.5x the WOODBRIDGE rather than Neorest-tier money
  • Kohler's dealer and parts network is deeper than most import smart-toilet brands
  • Its 1.0 gpf light flush matches the Neorest full flush, though Neorest goes lower at 0.8 GPF

What Could Be Better

  • UV cleaning is documented for the wand surfaces only, with no published bowl claim
  • Requires a dedicated GFCI circuit rather than a spare outlet, which means an electrician
  • Kohler publishes no minimum supply pressure on this sheet, so you cannot pre-check your line

The Verdict

If a touchless lid in a one-piece Kohler body is the specific thing you are shopping for, the Kohler Innate Smart Toilet checks the boxes that matter for that goal. The 6.3 composite is held down by a documented sanitizing system that stops at the wand. Its Amazon Buy Box is also a third-party plumbing reseller, so confirm stock before committing.

Cheapest One-Piece Entry: WOODBRIDGE B0970S One-Piece Smart Tankless Toilet

7.2/10Consensus
Cheapest One-Piece Entry

WOODBRIDGE B0970S One-Piece Smart Tankless Toilet

WOODBRIDGE B0970S One-Piece Smart Tankless Toilet
$650-$900

(Current price, subject to change)

One-piece tankless body drawing directly from the supply line
ADA height configuration
Auto flush plus foot-sensor operation
Heated seat with integrated remote control
Standard 110-120 V GFCI outlet, no dedicated circuit

The WOODBRIDGE B0970S One-Piece Smart Tankless Toilet earns a composite of 5.9 and anchors the price-to-capability factor at the top of that scale, because at $689.00 it is the cheapest credible one-piece tankless body in this guide, with the WASHLET+ Aquia IV configuration priced at 3.1x it and the Neorest RS at 6.5x it. WOODBRIDGE describes a spacious tankless design that draws water directly from the pipe, and the configuration we verified is the ADA-height variant that Bob Vila's smart-toilet roundup covers.

Two omissions are worth stating plainly rather than glossing. WOODBRIDGE's own model comparison leaves the automatic open/close lid row unchecked for the B0970S, so the lid is manual or remote-driven, versus the touchless lids above it. And no UV or electrolyzed-water sanitizing row appears for any model, which is what drives the lowest bowl-depth tier in the calculation.

What We Love

  • Genuine tankless one-piece design at the lowest price in this guide
  • Bob Vila's smart-toilet roundup lists the B0970S in its ADA-height slot
  • Installs from a standard GFCI outlet, which keeps an electrician off the job
  • Auto flush and foot sensor cover the touchpoints most buyers actually name

What Could Be Better

  • No automatic open/close lid — WOODBRIDGE's own comparison sheet leaves that row unchecked
  • No published UV or electrolyzed-water bowl-sanitizing system of any kind
  • Supply-pressure minimum is published only in MPa, not psi

The Verdict

For a secondary bathroom or a first move into the category, the WOODBRIDGE B0970S One-Piece Smart Tankless Toilet is a sensible pick for that setup. The 5.9 composite is honest about what the entry tier omits: no automatic lid and no documented bowl-sanitizing system. What it does deliver is a real tankless one-piece body at the floor of this roster.

How We Score: SHE Integrated Toilet Premium Score

SHE Integrated Toilet Premium Score

Full methodology →

Score Formula

(Bowl-Sanitizing Depth × 0.28) + (Hands-Free Operation × 0.22) + (Price-to-Capability × 0.20) + (Flush Efficiency × 0.17) + (Install Burden × 0.13)

Score Factors

  • Bowl-Sanitizing Depth (28%)How far the automatic self-cleaning reaches, read strictly off the manufacturer specification sheet. Wand plus bowl plus under-seat after every use is the ceiling; bowl and wand next; wand surfaces only sits well below that; no published sanitizing claim anchors the floor. Weighted highest because it is the one capability a bidet seat on an ordinary bowl cannot replicate.
  • Hands-Free Operation (22%)Touchless or motion-activated lid opening and closing plus automatic flush, taken from each manufacturer's own feature list. A model whose published comparison sheet leaves the automatic-lid row unchecked is scored as lacking it, regardless of what marketplace listing copy implies.
  • Price-to-Capability (20%)Live Amazon Creators API price captured 2026-07-25 set against the verified capability set, then normalized across the roster so the cheapest credible one-piece body anchors the top of the scale rather than an arbitrary ceiling.
  • Flush Efficiency (17%)Published dual-flush volume pair in GPF, lower being better over a long ownership window. The 1.0 and 0.8 GPF Neorest pair tops the scale, a 1.28 GPF full flush scores beneath it, and a volume published as a band rather than a fixed pair scores mid-tier.
  • Install Burden (13%)What the bathroom must already have before delivery day. A standard GFCI outlet scores highest, a manufacturer-required dedicated GFCI circuit scores lowest, and a published minimum supply pressure the buyer can check against their own line scores above one the manufacturer never publishes.

SHE Integrated Toilet Premium Score — Ranked

1
TOTO Neorest RS Smart Toilet

TOTO Neorest RS Smart Toilet

8.8/10

$4,476.60 — EWATER+ across wand, bowl and under-seat, 1.0 / 0.8 GPF, touchless lid; needs a grounded 120 V outlet

2
TOTO WASHLET+ Aquia IV with S7A Bidet Seat

TOTO WASHLET+ Aquia IV with S7A Bidet Seat

8.2/10

$2,103.65 — same EWATER+ bowl cleaning, with the Neorest RS priced at 2.1x this, but a two-piece bowl with a separate seat

3
Kohler Innate Smart Toilet

Kohler Innate Smart Toilet

6.3/10

$3,799.98 — motion-activated lid in a one-piece body; UV documented on the wand surfaces only

4
WOODBRIDGE B0970S One-Piece Smart Tankless Toilet

WOODBRIDGE B0970S One-Piece Smart Tankless Toilet

5.9/10

$689.00 — genuine tankless one-piece at the roster floor; no automatic lid, no published sanitizing system

Wand Cleaning vs Bowl Cleaning: The Distinction That Matters

Marketing copy across this category habitually collapses two genuinely different systems into a single phrase, but reading the specification sheets side by side separates the tiers cleanly. TOTO's EWATER+ is documented on the NEOREST RS as automatically cleaning the wand, bowl, and under-seat after every use, and on the S7A seat as cleaning the bowl and wand. Kohler's Innate documentation, by comparison, states that the self-cleaning function uses ultraviolet light to clean the wand surfaces, with no accompanying bowl claim whatsoever. Kohler does publish a combined ultraviolet and electrolyzed-water system on the NUMI 2.0, and that documentation similarly scopes the capability to the wand surfaces. WOODBRIDGE publishes no sanitizing row at all. The honest summary is therefore that only TOTO documents automatic cleaning of the ceramic surface you actually look at, and that individual factor produces most of the separation in our normalized composite.

The second consideration to settle before purchasing is electrical, because it is the requirement that most frequently stalls an installation. TOTO rates both NEOREST sheets we examined at AC 120 V, 60 Hz, 1.29 kW with a 3.9 ft three-prong cord, which means an existing grounded receptacle within reach will ordinarily suffice. Kohler is considerably stricter: the Innate requires one dedicated circuit protected with a Class A ground-fault interrupter at 120 V, 15A, and the NUMI 2.0 sheet calls for a dedicated GFCI circuit at 120 V without stating amperage, which represents an electrician's appointment rather than an afternoon. Pressure requirements diverge even in how the manufacturers express them: TOTO publishes a flowing minimum of 7.25 PSI on the NEOREST sheets and 8 psi for the Aquia IV body, whereas Kohler publishes no minimum supply pressure at all on the Innate sheet. Flowing and static figures are not interchangeable, so evaluate each against your own supply line exactly as its manufacturer states it. Every specification figure in this guide was read from manufacturer documentation as of July 2026.

ProductOne-Piece BodyAuto Open/Close LidBowl SanitizingWand SanitizingStandard GFCI OutletMin. Pressure Published
toto-neorest-rs-smart-toilet
toto-washlet-s7a-aquia-iv-smart-toilet
kohler-innate-smart-toilet
woodbridge-b0970s-smart-toilet

When NOT to Buy

If what you actually want is a warm seat and a warm-water wash, buy a bidet seat and keep your bowl. Our Best Smart Bidet Toilet Seats 2026 roundup covers that tier, and nothing in this guide beats it on cost per feature — the Neorest RS alone runs 4.2x a standalone S7A seat before an electrician invoices anything. Our Best Smart Bidet Toilet Seats 2026: TOTO Wins hub frames the whole category if you are still deciding between tiers. The integrated premium only pays back when self-cleaning ceramic, a touchless lid, or a single-piece silhouette is genuinely the goal. Also skip this tier if the bathroom has no grounded outlet behind the toilet and no realistic route to one.

The Aspirational Tier We Did Not Card

Above the picks evaluated here sits a tier that appears in every design magazine and almost never in a dependable Amazon Buy Box, so we verified each listing individually rather than assuming availability. The TOTO NEOREST NX2 does list at $26,279.00 sold directly by Amazon, but the listing showed a solitary unit remaining, which is not a purchasing path we are prepared to recommend without an explicit warning. The NEOREST LS listed at $8,790.00 with three units available, and the NEOREST AS at $6,783.00 through a third-party plumbing reseller carrying eleven. Kohler's NUMI 2.0 listed at $12,999.97, similarly through a third-party reseller, with four remaining. Every listing was New condition when we checked and none carried a Renewed designation, but availability at that inventory depth fluctuates considerably week to week.

Consequently this guide cards only listings we could independently confirm as live, New, and reasonably stocked, and covers the remainder editorially. If one of these is genuinely the toilet you want, verify current availability before planning a renovation around it, and treat a plumbing showroom or the manufacturer's dealer network as the more dependable acquisition channel. The specification narrative remains worth understanding regardless. ACTILIGHT appears on the NX2 lid and does not appear on the RS specification sheet, so an RS purchaser is not quietly receiving a diminished version of an identical cleaning system. TOTO's published power rating is identical on both of those sheets, AC 120 V, 60 Hz, 1.29 kW, so stepping between them does not alter what the room must already provide.

Who Should Buy What

Who Should Buy What

If you are…Recommended pick

Wants the bowl to clean itself

The reason you are shopping above bidet-seat money is automatic sanitizing that reaches the ceramic, not just the spray wand

TOTO Neorest RS Smart Toilet

Wants EWATER+ for less

You want TOTO's documented bowl cleaning and an auto lid, and a two-piece body with a separate seat is acceptable in the room

TOTO WASHLET+ Aquia IV with S7A Bidet Seat

Kohler-spec remodel

The bathroom is being specified in Kohler and an electrician is already scheduled to run a dedicated GFCI circuit

Kohler Innate Smart Toilet

First smart toilet, tight budget

You want a genuine one-piece tankless body with auto flush and a heated seat, and can live without an automatic lid

WOODBRIDGE B0970S One-Piece Smart Tankless Toilet

Frequently Asked Questions

Is an integrated smart toilet worth 4x the price of a bidet seat?

Only for three specific reasons, and the Neorest RS at 4.2x a standalone S7A seat concentrates all of them. First, automatic cleaning that reaches the bowl rather than the wand — TOTO documents EWATER+ cleaning the wand, bowl and under-seat on the NEOREST RS, and the bowl and wand on the S7A seat. Second, a touchless lid. Third, a single-piece silhouette with no seam. Worth knowing: the multiple is not fixed across the category. The WOODBRIDGE B0970S at $689.00 actually undercuts the standalone S7A seat at $1,074.99, so the entry tier is not a step up in price at all — only in what it omits. If your motivation is simply a heated seat and a warm-water wash, a bidet seat on your existing bowl covers that well, and we would point you there instead.

What is the difference between EWATER+ and UV self-cleaning?

The important difference is reach, not chemistry. TOTO's specification sheets state that EWATER+ auto-cleans the wand and bowl after every use, and on the NEOREST RS the under-seat as well. Kohler's Innate sheet states that its self-cleaning function uses UV light to clean the wand surfaces, and the NUMI 2.0 sheet describes a combined UV and electrolyzed-water system also scoped to the wand surfaces. So TOTO is the manufacturer publishing an automatic bowl-cleaning claim in this comparison.

What electrical work does an integrated smart toilet need?

It depends on the maker, and this is the requirement that most often delays an install. TOTO's NEOREST sheets publish a power rating of AC 120 V, 60 Hz, 1.29 kW and a 3.9 ft three-prong cord, so an existing grounded receptacle behind the toilet is usually enough. Kohler is stricter: the Innate sheet requires one dedicated circuit protected with a Class A ground-fault circuit interrupter at 120 V, 15A, and the NUMI 2.0 sheet requires a dedicated GFCI circuit at 120 V without stating amperage. WOODBRIDGE lists a standard 110-120 V GFCI outlet for the B0970S.

What water pressure does an integrated smart toilet need?

Check your own line against the number your chosen maker publishes, because they are not stated the same way. TOTO publishes a minimum flowing pressure of 7.25 PSI on the NEOREST sheets and 8 psi for the Aquia IV body, with a static maximum of 108.75 PSI. Kohler publishes no minimum at all on the Innate sheet, so there is no figure to check it against. Flowing and static figures are not interchangeable either, so never substitute one model's number for another's.

TOTO NEOREST RS vs NX2 — what does the extra money buy?

ACTILIGHT is the headline difference. TOTO lists ACTILIGHT cleaning-light technology built into the NX2 lid, and it does not appear on the RS specification sheet. Both sheets publish the same power rating, AC 120 V, 60 Hz, 1.29 kW, and both Amazon listings are titled as dual flush 1.0 or 0.8 GPF with EWATER+. On availability the gap is stark: at our July 2026 check the RS was sold by Amazon and In Stock, while the NX2 listing showed a single unit remaining at $26,279.00.

Is a WASHLET+ bowl-and-seat combo as good as a one-piece integrated toilet?

On cleaning capability it can be, and that is what makes it the value play. The S7A seat paired with the Aquia IV bowl carries the same documented EWATER+ bowl-and-wand cleaning as the higher tier, plus an auto open and close lid. What you give up is the single ceramic body: the seat remains a separate assembly with a visible seam, and the Aquia IV's full flush is rated 1.28 GPF against the NEOREST 1.0 GPF.

Bottom Line

Get the TOTO Neorest RS Smart Toilet if you want the deepest documented automatic cleaning and the lowest flush pair, and a grounded GFCI outlet already sits behind the toilet.

Get the TOTO WASHLET+ Aquia IV with S7A Bidet Seat if you want the same EWATER+ bowl cleaning for markedly less and a two-piece body is acceptable in the room.

Get the Kohler Innate Smart Toilet if a motion-activated lid in a one-piece Kohler body is the goal and an electrician is already scheduled.

Get the WOODBRIDGE B0970S One-Piece Smart Tankless Toilet if you want a genuine tankless one-piece at the entry price and can live without an automatic lid.

The right call for most buyers at this tier is the TOTO Neorest RS Smart Toilet — it is the only pick whose maker documents cleaning that reaches the bowl. If the premium is hard to justify, the TOTO WASHLET+ Aquia IV with S7A Bidet Seat delivers that same bowl cleaning for considerably less. Skip the tier entirely if a heated seat is what you actually want; a bidet seat on your current bowl does that job.

Sources & Methodology

Methodology: SHE Integrated Toilet Premium Score — Formula: (Bowl-Sanitizing Depth × 0.28) + (Hands-Free Operation × 0.22) + (Price-to-Capability × 0.20) + (Flush Efficiency × 0.17) + (Install Burden × 0.13). Factors: Bowl-Sanitizing Depth (28%): How far the automatic self-cleaning reaches, read strictly off the manufacturer specification sheet. Wand plus bowl plus under-seat after every use is the ceiling; bowl and wand next; wand surfaces only sits well below that; no published sanitizing claim anchors the floor. Weighted highest because it is the one capability a bidet seat on an ordinary bowl cannot replicate. | Hands-Free Operation (22%): Touchless or motion-activated lid opening and closing plus automatic flush, taken from each manufacturer's own feature list. A model whose published comparison sheet leaves the automatic-lid row unchecked is scored as lacking it, regardless of what marketplace listing copy implies. | Price-to-Capability (20%): Live Amazon Creators API price captured 2026-07-25 set against the verified capability set, then normalized across the roster so the cheapest credible one-piece body anchors the top of the scale rather than an arbitrary ceiling. | Flush Efficiency (17%): Published dual-flush volume pair in GPF, lower being better over a long ownership window. The 1.0 and 0.8 GPF Neorest pair tops the scale, a 1.28 GPF full flush scores beneath it, and a volume published as a band rather than a fixed pair scores mid-tier. | Install Burden (13%): What the bathroom must already have before delivery day. A standard GFCI outlet scores highest, a manufacturer-required dedicated GFCI circuit scores lowest, and a published minimum supply pressure the buyer can check against their own line scores above one the manufacturer never publishes.

Expert review sources used in this analysis:

  1. SmartHomeExplorer aggregates manufacturer documentation and expert review coverage to produce consensus-based buying guidance
  2. We do not perform first-party product testing
  3. Every specification in this guide was read from a manufacturer sheet on 2026-07-25: TOTO SS-02218 (NEOREST RS MS8341CUMFG), SS-02222 (NEOREST NX2 MS903CUMFX), SS-02228 (WASHLET+ S7A SW4736AT40 / SW4734AT40) and SS-02185 (WASHLET+ Aquia IV MW4464736CEMFGN(A)); Kohler K-29777-PA (Innate) and K-30754-PA (NUMI 2.0); and WOODBRIDGE's B0970S product page and model comparison sheet
  4. Prices, ASINs, condition and Buy-Box seller were verified the same day via the Amazon Creators API: NEOREST RS $4,476.60, WASHLET+ Aquia IV with S7A $2,103.65, Kohler Innate $3,799.98, WOODBRIDGE B0970S $689.00, plus the uncarded NEOREST NX2 $26,279.00, NEOREST LS $8,790.00, NEOREST AS $6,783.00 and NUMI 2.0 $12,999.97
  5. All were New condition; none carried a Renewed label
  6. Prices shown are list prices that change frequently
  7. Expert coverage of this tier is genuinely thin at the SKU level
  8. Bob Vila's smart-toilet roundup names the WOODBRIDGE B0970S; for the other three models in our roster we could not verify exact-model coverage from a recognized outlet in this pass, so the guide is flagged as citation-thin and states manufacturer specifications rather than borrowed verdicts
  9. Consensus scores for the three products newly added to our registry here reflect our own specification-led evaluation rather than an aggregate of outlet ratings
  10. The SHE Integrated Toilet Premium Score weights bowl-sanitizing depth, hands-free operation, price-to-capability, flush efficiency and install burden; no first-party measurements were conducted.

Nicholas Miles is the founder of SmartHomeExplorer and a longtime smart home enthusiast focused on helping everyday homeowners make better technology decisions. He researches, compares, and writes about products across security, climate, lighting, leak prevention, sensors, home energy, and automation, with an emphasis on real-world usefulness, ecosystem compatibility, reliability, privacy, and long-term value.

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