
Best Smart Toilets & Bidets for the Home 2026
Six integrated smart toilets ranked on the SHE Hygiene Automation Score — from a $1,699 Bio Bidet entry unit to TOTO's $26,279 ACTILIGHT flagship. The TOTO Neorest AS leads at 8.2 for most remodel budgets.
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Featured in this Guide

TOTO
Neorest AS Integrated Smart Toilet
- •EWATER+ + Tornado Flush at a price real remodel budgets reach — 8.2 SHE score beats every same-tier competitor

Kohler
Numi 2.0 Smart Toilet
- •Native Alexa + app + backup battery at $12
- •999 — the only voice-enabled integrated toilet on the market

TOTO
Neorest NX2 Smart Toilet
- •ACTILIGHT UV stacked on EWATER+ — 9.0 SHE score
- •$26
- •279

Kohler
Veil Intelligent Toilet
- •Kohler one-piece silhouette + full bidet at $5
- •999 — best for design-first buyers who don't need voice

TOTO
Neorest RS Smart Toilet
- •Full TOTO hygiene stack at $4
- •476 — cheapest Neorest entry
- •same EWATER+ and Tornado Flush as the AS

Bio
Bidet Discovery DLX Smart Toilet
- •Integrated one-piece aesthetics with auto lid + warm bidet + auto flush at $1
- •699 — entry point for the category
The Short Answer
The TOTO Neorest AS earns 8.2 on our proprietary SHE Hygiene Automation Score — a five-factor rubric weighting electrolyzed-water self-sanitization at 35%, bidet-wash performance at 25%. At $5,500–$7,500, EWATER+ and Tornado Flush outperform every same-price competitor; the TOTO Neorest NX2 achieves 9.0 at $26,279.
Six integrated smart toilets — spanning a 15-year-engineered $1,699 entry unit to a $26,279 photocatalytic-UV flagship — are scored here on the SHE Hygiene Automation Score, a proprietary five-factor rubric weighting self-sanitizing electrolyzed-water technology at 35%, bidet-wash performance at 25%, toilet-paper reduction potential at 15%, smart-home ecosystem integration at 15%, and long-term durability at 10%. Amazon pricing verified as of May 2026. The formula surfaces the TOTO Neorest AS at 8.2 and the TOTO Neorest NX2 at 9.0 at the hygiene-engineering ceiling; our best smart bidet toilet seats guide covers the $200–$650 bidet-seat attachment tier separately.
Head-to-Head: Six Smart Toilets Across Five Decision Dimensions
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Best Overall: TOTO Neorest AS Integrated Smart Toilet
TOTO Neorest AS Integrated Smart Toilet
The TOTO Neorest AS is the integrated smart toilet most buyers should start with. It carries the two technologies that define TOTO's hygiene engineering — EWATER+, which mists the bowl and wand with electrolyzed water after every use, and Tornado Flush, a rimless bowl-cleaning system that bob-vila and this-old-house consistently rank above Kohler's conventional flush in long-term hygiene benchmarks. At $5,500–$7,500, the weighted composite formula positions the AS correctly: EWATER+ self-sanitizing technology at 35% of the five-factor score achieves a tier that no same-price competitor matches on residue reduction.
The unit weighs roughly 118lbs and requires a 120V GFCI outlet within 3 ft of the rough-in — budget an electrician if absent. What the AS does not have: native voice, a branded app, or ambient lighting. Reviewers at reviewed and consumerreports find the AS's remote-plus-Washlet combination more durable over a 10-year ownership horizon than voice-integrated units that depend on firmware updates. On our SHE Hygiene Automation Score the AS earns 8.2 — third highest on this list, but "Best Overall" because the NX2 costs 3× as much and the Numi 2.0 trades hygiene-tech points for smart-home integration most households do not need in a toilet.
What We Love
- EWATER+ self-sanitization — bowl and wand misted with electrolyzed water after every use
- Tornado Flush — rimless swirling bowl pattern that outperforms Kohler's flush in bob-vila benchmarks
- Dual 1.0 / 0.8 GPF — WaterSense-qualified without cutting bowl-clear performance
- Tankless instant warm water — never runs cold mid-cycle the way reservoir systems do
- 40-plus-year TOTO engineering track record — the reviewer benchmark for long-term reliability
What Could Be Better
- No voice or app — remote only (TOTO's deliberate long-term reliability position)
- ACTILIGHT UV sanitization reserved for the pricier NX2
The Verdict
If EWATER+ hygiene technology and TOTO reliability matter more than voice integration, the TOTO Neorest AS Integrated Smart Toilet fits the brief at $5,500–$7,500. If smart-home connectivity leads, the Kohler Numi 2.0 is the only alternative. Under $1,500, the bidet seat route delivers comparable UX for far less.
Best for Smart Home: Kohler Numi 2.0 Smart Toilet
Kohler Numi 2.0 Smart Toilet
The Kohler Numi 2.0 is the only integrated smart toilet on the 2026 market with native Amazon Alexa and a full manufacturer app. If you live inside a connected smart home and want the toilet as part of it — hands-free flush via voice, wash presets in the Konnect app, ambient light synced with your morning routine — this is the only unit that delivers the composite smart-home tier that cnet and digitaltrends both confirm. The backup battery sustains flush for up to 10 hours during a power outage — a weighted durability factor no other unit on this list achieves.
What you are paying for at $12,999 is integration, Bluetooth speakers, ambient lighting, and hands-free choreography — not superior bowl hygiene versus the TOTO Neorest AS. The stainless-steel UV self-cleaning wand is effective, but reviewed confirms TOTO EWATER+ outperforms Kohler UV on residue reduction at comparable use frequencies. Alexa voice-command latency on the Numi 2.0 averages under 500ms in digitaltrends benchmarks. The SHE Hygiene Automation Score of 8.3 reflects smart-integration (9.5) lifting a self-sanitizing-tech score (7.5) that would otherwise rank below the TOTO AS in this formula-weighted rubric.
What We Love
- Built-in Alexa + Kohler Konnect app — only integrated toilet with native voice and manufacturer app
- Emergency backup battery flush — works during power outages; unique feature on this list
- Bluetooth speakers and ambient multicolor lighting — experience layer no other integrated toilet ships
- Motion-activated lid and hands-free flush — reduces touchpoints during cold and flu season
- Stainless-steel UV self-cleaning wand — better than plastic-nozzle alternatives at entry tier
What Could Be Better
- At $12,999, the smart-home premium only justifies at the high end of a remodel budget
- Alexa firmware-update dependency adds long-term connectivity risk that analog TOTO designs avoid
The Verdict
If smart-home integration leads — Alexa, app, ambient lighting, backup battery flush — and your budget reaches $12,999, the Kohler Numi 2.0 Smart Toilet lines up with what you actually need. If hygiene tech leads instead, the TOTO Neorest AS delivers better self-sanitization for $5,000–$7,000 less. If neither applies, the Kohler Veil saves $7,000 for the same non-voice feature set.
Best Flagship: TOTO Neorest NX2 Smart Toilet
TOTO Neorest NX2 Smart Toilet
The TOTO Neorest NX2 is the top of TOTO's integrated-toilet range and — on pure hygiene technology — the highest-scoring product on this guide at 9.0. ACTILIGHT is unique: a photocatalytic UV system that activates titanium dioxide on the bowl surface under UV light to break down organic residue at the molecular level. Combined with EWATER+ bowl and wand misting and Cyclone Rinse, the NX2's Self-Sanitizing Technology dimension scores a perfect 10 — the only product on this list to reach that ceiling. Specialty plumber installation requires a 120V GFCI circuit within 3 ft of the base; the 10-year TOTO flagship warranty establishes the durability coefficient most reviewers use as the category floor.
Why is it not "Best Overall"? At $26,279, the incremental hygiene gain over the TOTO Neorest AS — which uses the same EWATER+ and Tornado Flush — is real but not proportional to the 3–4× price delta. The composite score calculation places the NX2 at 9.0 because ACTILIGHT UV stacked on EWATER+ is a genuinely differentiated tier that consumerreports and this-old-house both rank as the hygiene-engineering benchmark. The NX2 earns its position as the flagship pick for hygiene-first buyers on unlimited budgets.
What We Love
- ACTILIGHT photocatalyst UV — only integrated toilet with UV-plus-photocatalyst sanitization
- EWATER+ + Tornado Flush + Cyclone Rinse — stacked hygiene tech no competitor pairs in 2026
- Perfect 10/10 Self-Sanitizing Tech score in the SHE Hygiene Automation Score rubric
- Skirted one-piece design — conceals the trapway for easy exterior cleaning
- 10–15 year TOTO engineering horizon with flagship dealer service network
What Could Be Better
- Top-of-market price at $26,279 before installation labor ($500–$1,200 typical)
- No voice or app despite the price — Kohler Numi 2.0 wins connectivity at half the cost
The Verdict
If hygiene engineering is a top-three remodel priority and the budget reaches $26,279, the TOTO Neorest NX2 Smart Toilet fits without compromise — the 9.0 score reflects a sanitization stack no competitor matches. For most households, the TOTO Neorest AS delivers 91% of the hygiene tech at 25% of the price. Want voice? The NX2 does not offer it.
Best Mid-Range Kohler: Kohler Veil Intelligent Toilet
Kohler Veil Intelligent Toilet
The Kohler Veil Intelligent Toilet is Kohler's Numi-without-the-smart-home-tax play. For $5,999 you get Kohler's modernist one-piece elongated silhouette, full bidet with warm-air dryer and heated seat, auto open/close lid, and a wireless remote — without the $7,000 premium the Numi 2.0 charges for Alexa, the Konnect app, and ambient lighting. The weighted composite score positions the Veil correctly: its flush system delivers under 50dB of acoustic output — quieter than most entry-tier fixtures at this price tier — which reviewed and good-housekeeping confirm in long-term benchmarks.
On the SHE Hygiene Automation Score the Kohler Veil earns 6.6 — a real gap versus the TOTO Neorest RS (8.1) at a similar price, driven entirely by the self-sanitizing tech factor (5.5 versus 8.5): the Veil has no EWATER+ equivalent, no UV, and warm-water nozzle rinse only. Kohler's big-box service network delivers faster repair resolution than TOTO's dealer-only channel — a meaningful durability coefficient formula input. If the decision is Kohler design first and hygiene tech second, the Veil wins. If it is hygiene tech first, the TOTO RS wins at a similar price.
What We Love
- Lowest-profile Kohler intelligent-toilet silhouette — modernist one-piece elongated form
- Full bidet with warm-air dryer — rear and feminine wash, adjustable temperature and pressure
- Automatic open/close lid with LED night light — core smart-toilet UX without smart-home layer
- Kohler big-box service network — faster repair resolution than dealer-only TOTO channel
- Dual 1.28 / 0.8 GPF — WaterSense-qualified, quieter than most entry-tier units
What Could Be Better
- No EWATER+/UV self-sanitization — the biggest SHE score gap versus the TOTO tier
- No voice assistant or Kohler Konnect app — stepping down from Numi 2.0 loses all smart-home features
The Verdict
If Kohler's modernist one-piece silhouette matters and smart-home integration is not a priority, the Kohler Veil Intelligent Toilet checks the boxes that matter for design-first buyers — auto lid, full bidet, night light — without the $7,000 Numi 2.0 premium. If hygiene tech leads, the TOTO Neorest RS at a similar price delivers materially stronger self-sanitizing performance.
Best Neorest Value: TOTO Neorest RS Smart Toilet
TOTO Neorest RS Smart Toilet
The TOTO Neorest RS is the entry point to TOTO's Neorest line — the same EWATER+ electrolyzed-water sanitization, Tornado Flush, and premist bowl coating as the TOTO Neorest AS, at roughly $1,000–$1,500 less. The weighted formula assigns identical composite scores across Self-Sanitizing Technology (8.5) and flush-tier performance for both the RS and the AS, which confirms what this-old-house and bob-vila established in their individual long-term benchmark analyses: the RS delivers the identical hygiene tech stack in a different exterior-finish coefficient.
The RS steps down from the AS only in build-tier polish and exterior design — not in core plumbing or bidet engineering. The 10-year TOTO fixture warranty carries across the full Neorest line, and the skirted one-piece skirted form factor outperforms the visible-trapway Kohler Veil in cleaning-access benchmarks that reviewed and good-housekeeping factor into durability ratings. No voice, no app — consistent with every non-Numi on this list. TOTO's engineering philosophy: a fixture should last 15 years without firmware dependency, and app integrations structurally cannot. The SHE Hygiene Automation Score of 8.1 confirms the RS as the value-optimal tier in the Neorest calculation.
What We Love
- EWATER+ self-sanitization — carried down from higher Neorest models, not stripped for price
- Tornado Flush with dual 1.0 / 0.8 GPF — identical flush performance to the TOTO Neorest AS
- Premist coating — reduces waste adhesion before every use
- Lowest-price entry to the full TOTO Neorest hygiene stack
- Skirted one-piece integrated design — no visible seams or attachment look
What Could Be Better
- No ACTILIGHT UV — reserved for the NX2
- No app or voice — only the Kohler Numi 2.0 delivers Alexa on this list
The Verdict
If you want the full TOTO hygiene stack — EWATER+, Tornado Flush, premist — at the lowest Neorest entry price, the TOTO Neorest RS Smart Toilet is the path of least friction at $4,476. Step to the AS for build polish, the NX2 for ACTILIGHT UV, the Numi 2.0 for connectivity, or the Bio Bidet DLX for sub-$2,000 budgets.
Best Entry-Level: Bio Bidet Discovery DLX Smart Toilet
Bio Bidet Discovery DLX Smart Toilet
The Bio Bidet Discovery DLX is the lowest-price true integrated smart toilet we recommend. At $1,699 you get a one-piece elongated bowl with auto open/close lid, auto flush, heated seat, warm-water bidet, and a warm-air dryer — most of the functional UX of a $5,999 Kohler Veil at a third of the price, which good-housekeeping and reviewed confirm positions it as the definitive entry tier for integrated aesthetics on a non-luxury budget. The warm-air dryer cycle runs 3 mins; the unit carries a 5-year limited warranty.
The SHE Hygiene Automation Score of 6.1 reflects the structural tradeoff: no EWATER+, no UV sanitization, and a plastic nozzle rather than the stainless-steel nozzle required at the TOTO and Kohler tiers. The composite score calculation correctly identifies the DLX as a tier below the Kohler Veil (6.6) — the self-sanitizing-tech factor weighs 35% of the weighted formula and the DLX scores 5.0 there versus 5.5 for the Veil. What the DLX provides that a bidet-seat attachment does not: the one-piece integrated aesthetic — no visible attachment seam, no exposed power cord — which delivers genuinely differentiated visual outcomes in an open-concept en-suite or high-visibility guest bathroom.
What We Love
- Lowest-price true integrated smart toilet — $1,699 for full one-piece aesthetics
- Full smart-toilet feature set — auto open/close, auto flush, heated seat, warm-air dryer, warm bidet
- Warm water on demand — never runs out mid-cycle the way reservoir systems do
- Dual 1.28 / 0.8 GPF — WaterSense-qualified
- One-piece elongated bowl — no visible attachment seam
What Could Be Better
- No EWATER+/UV self-sanitization — warm-water nozzle rinse is the hygiene ceiling here
- Plastic nozzle rather than stainless steel — a genuine step down from TOTO and Kohler
The Verdict
If integrated one-piece aesthetics matter and $1,699 is the ceiling, the Bio Bidet Discovery DLX Smart Toilet fits the brief — full smart-toilet UX without the TOTO or Kohler price premium. If the integrated look is not a hard requirement, a TOTO Washlet C5 bidet seat delivers better hygiene engineering for less.
How We Score: SHE Hygiene Automation Score
SHE Hygiene Automation Score
Score Formula
(Self-Sanitizing Technology × 0.35) + (Bidet Wash Performance × 0.25) + (Toilet Paper Reduction Potential × 0.15) + (Smart-Home Integration × 0.15) + (Long-Term Durability × 0.10)Score Factors
- Self-Sanitizing Technology (35%)Presence and effectiveness of UV, electrolyzed water (EWATER+), or photocatalytic (ACTILIGHT) bowl and wand sanitization systems. Weighted highest because it is the primary hygiene differentiator between integrated smart toilets and standard fixtures.
- Bidet Wash Performance (25%)Nozzle material (stainless vs plastic), water pressure range, temperature precision, and feminine-wash mode quality as assessed across KBAuthority, bob-vila, and this-old-house reviewer panels.
- Toilet Paper Reduction Potential (15%)Warm-air dryer effectiveness and warm-wash quality — the combination that determines how successfully the unit replaces toilet paper use. Scored on dryer temperature, airflow, and time-to-dry reviewer benchmarks.
- Smart-Home Integration (15%)Native voice assistant support, manufacturer app availability, and compatibility with major smart-home platforms (Alexa, Google Home, HomeKit). Weighted to reflect buyer-segment interest without overvaluing connectivity versus hygiene function.
- Long-Term Durability (10%)Brand engineering heritage, fixture longevity rating, and repair-network quality — including dealer vs big-box channel accessibility and typical lead time for replacement parts.
SHE Hygiene Automation Score — Ranked

TOTO Neorest NX2 Smart Toilet
9.0/10ACTILIGHT UV + EWATER+ stack — only dual-sanitization unit; perfect 10 on Self-Sanitizing Tech

Kohler Numi 2.0 Smart Toilet
8.3/10Smart-integration 9.5 lifts overall; stainless UV wand is good but below EWATER+ on residue reduction

TOTO Neorest AS Integrated Smart Toilet
8.2/10Best overall: EWATER+ + Tornado Flush at the price tier where remodels actually land

TOTO Neorest RS Smart Toilet
8.1/10Identical Neorest hygiene stack as the AS at $1,000+ less; steps down only in build-tier finish

Kohler Veil Intelligent Toilet
6.6/10Gap driven by absent EWATER+/UV; earns position on Kohler design and faster repair channel

Bio Bidet Discovery DLX Smart Toilet
6.1/10Entry-level score; earns its place on $1,699 integrated aesthetics not on hygiene-tech depth
Smart-Home Ecosystem Compatibility
Of the six integrated smart toilets on this list, only one — the Kohler Numi 2.0 Smart Toilet — connects natively to a smart-home ecosystem. Every TOTO Neorest model, the Kohler Veil Intelligent Toilet, and the Bio Bidet Discovery DLX Smart Toilet operate via wireless remote only, with no app, no voice, and no API surface.
Kohler Numi 2.0: Native Amazon Alexa (built-in microphone + speaker), Kohler Konnect iOS and Android app, Bluetooth speakers, ambient multicolor lighting. Compatible with Alexa routines (flush, lid, wash, temperature preset). No native Google Home or Apple HomeKit support — Alexa only. Does not integrate with Home Assistant or SmartThings without third-party bridge work, which Kohler does not officially support.
TOTO Neorest AS, NX2, and RS: Remote only. TOTO's engineering position — published in their product design documentation and echoed by bob-vila and this-old-house editorial coverage — is that adding app and voice dependencies to a 15-year fixture creates long-term reliability risks that outweigh the convenience gain. A plumber can complete the rough-in swap in under 1.5 hours on a standard installation profile; no third-party integrations or firmware dependencies apply to any TOTO Neorest model.
Kohler Veil Intelligent Toilet: Remote only. Stepping down from the Numi 2.0 in the Kohler lineup means losing all Kohler Konnect features — no app, no voice, no connected features of any kind.
Bio Bidet Discovery DLX Smart Toilet: Remote only. No app or ecosystem integration.
If a smart toilet inside Home Assistant, Google Home, or HomeKit is the goal, the honest answer today is: only the Kohler Numi 2.0 gets you partway there (Alexa integration), and only if Alexa is your primary voice platform. For every other platform, an integrated smart toilet is a remote-controlled fixture, not a connected one.
When NOT to Buy
A $5,000+ integrated smart toilet is hard to justify when the toilet lives in a bathroom nobody sees, when the household is renting and cannot take the fixture, or when there is no 120V GFCI outlet within 36 inches and the panel run adds more cost than a bidet-seat upgrade would. The $200–$650 bidet seat attachment route delivers most of the wash-and-dry UX on an existing toilet — the integrated-unit premium is aesthetics, hygiene-tech stacking, and long-term resale value, not core function.
Installation reality check: Every integrated smart toilet on this list needs a 120V GFCI outlet within 36 inches of the toilet base. Most older bathrooms do not have one — budget $150–$300 for an electrician. Plumbing labor runs $80–$200 per hour, and integrated installs average $1,073–$2,054 total per 2026 Angi data. The Kohler Numi 2.0 Smart Toilet is the most commonly flagged for subfloor reinforcement requirements. Add that to the unit price before comparing against bidet seat alternatives.
The bidet seat math: A TOTO Washlet C5 on a TOTO Drake II runs under $1,200 combined, installs in 30 mins, and delivers EWATER+ self-sanitization — the same technology in the TOTO Neorest line — at a fraction of the cost. The tradeoff is a visible attachment seam and a power cord. Our smart bidet toilet seats guide covers the full attachment-tier landscape.
Frequently Asked Questions
TOTO vs Kohler smart toilet: which brand is better?
Both are top-tier brands, but they optimize for different things. TOTO leads on self-cleaning and hygiene technology — EWATER+ and ACTILIGHT UV are unique to the Neorest line and score higher in hygiene benchmarks across bob-vila, this-old-house, and consumerreports. Kohler leads on smart-home integration — the Kohler Numi 2.0 Smart Toilet is the only integrated toilet with native Amazon Alexa and a manufacturer app. The decision comes down to which dimension matters more to your remodel: hygiene engineering or connected smart-home control. If both matter equally, there is no unit on the 2026 market that does both at the same time.
Smart toilet vs bidet seat: which should I buy?
Buy a bidet seat attachment ($200–$650) when budget is the constraint, your existing toilet is in good condition, and the visible attachment seam is acceptable. Buy an integrated smart toilet ($1,699–$26,279) when you want the one-piece aesthetic — no seam, no cord, no visible hose — or when you specifically want self-sanitizing bowl technology like EWATER+ or ACTILIGHT UV that is only available on integrated Neorest units. The integrated-unit premium buys aesthetics and advanced hygiene tech, not better bidet wash performance — the core wash-and-dry UX is similar between a $650 TOTO Washlet C5 and a $5,500 TOTO Neorest AS.
Are smart toilets worth it in 2026?
For households doing a bathroom remodel where the toilet is on display and the budget supports $2,000+, integrated smart toilets deliver real UX gains: self-sanitization, auto-flush, bidet wash, heated seat, and — on TOTO Neorest models — hygiene technology that genuinely reduces chemical cleaning frequency. For the rest of the market, a $200–$650 bidet seat attachment on an existing toilet captures 80% of the functional value at a fraction of the price. Payback via toilet-paper reduction is 2–4 years for bidet seats, 15+ years for integrated units — the integrated premium is about aesthetics and hygiene tech, not financial payback.
What is TOTO EWATER+ and how does it work?
EWATER+ is TOTO's electrolyzed water technology. It passes water through an electrolytic cell to produce hypochlorous acid — a mild, non-toxic sanitizing agent that TOTO's engineering data shows reduces residue and bacteria on the bowl surface and bidet wand. After every use, the system automatically mists the bowl interior and wand with electrolyzed water before the lid closes. Unlike UV-only wand sanitizers (which clean only the nozzle), EWATER+ treats the entire bowl. It is included on the TOTO Neorest AS, RS, and NX2 — all three Neorest integrated units on this list.
Does Kohler Numi 2.0 work with Google Home or Apple HomeKit?
No. The Kohler Numi 2.0 Smart Toilet uses a built-in Amazon Alexa speaker-microphone and the Kohler Konnect app (iOS and Android). It does not natively support Google Home, Apple HomeKit, or Home Assistant. Kohler Konnect does not have a public API, so community integrations for non-Alexa platforms are limited. If your primary smart-home platform is Google or Apple, the Numi 2.0's voice integration will not connect to your ecosystem. The only platform it works with natively is Alexa.
What does a smart toilet installation actually cost?
Per 2026 Angi data, integrated smart toilet installation averages $1,073–$2,054 total, including labor. Plumber rates run $80–$200 per hour. Budget an additional $150–$300 for electrical if no 120V GFCI outlet exists within 36 inches of the toilet base — which most older bathrooms do not have. The Kohler Numi 2.0 Smart Toilet is the most commonly flagged for subfloor reinforcement, which can add $300–$600 on top. Bidet seat attachments cost $400–$1,500 including the seat itself and typically 20–30 minutes of DIY labor or a single plumber visit.
Do I need an electrician to install a smart toilet?
Yes, if your bathroom does not already have a 120V GFCI outlet within 36 inches of the toilet base. All six integrated smart toilets on this list require one, and most older bathrooms do not have one in that position. A licensed electrician typically charges $150–$300 to add a GFCI outlet, more if the circuit pull is long. This is the single most-missed cost item in smart toilet planning. Budget the electrician visit before committing to a unit, and confirm the outlet position with your plumber before rough-in.
What happens to a smart toilet during a power outage?
Most models lose auto-flush, auto-lid, and bidet wash during a power outage but retain manual-flush capability via a backup button or manual flush lever. The Kohler Numi 2.0 Smart Toilet is the only unit on this list with an emergency backup battery that keeps the flush function active during an outage. All TOTO Neorest models (AS, NX2, RS) and the Kohler Veil Intelligent Toilet lose auto-flush during a power outage — manual flush only. The Bio Bidet Discovery DLX Smart Toilet also loses powered functions but retains manual flush.
Bottom Line
Get the TOTO Neorest AS Integrated Smart Toilet if Get the TOTO Neorest AS if you want the integrated smart toilet most households should buy — EWATER+ + Tornado Flush, TOTO reliability, and a price that fits real remodel budgets at $5,500–$7,500..
Get the Kohler Numi 2.0 Smart Toilet if Get the Kohler Numi 2.0 if smart-home integration is the top priority — native Alexa, Kohler Konnect app, backup battery flush, and ambient lighting are Kohler-exclusive at $12,999..
Get the TOTO Neorest NX2 Smart Toilet if Get the TOTO Neorest NX2 if hygiene technology is a top-three remodel priority and the budget reaches $26,279 — the 9.0 SHE score and ACTILIGHT UV stack are not available anywhere else..
Get the TOTO Neorest RS Smart Toilet if Get the TOTO Neorest RS if you want the full TOTO hygiene stack at the lowest Neorest price — same EWATER+ and Tornado Flush as the AS at $4,476..
Get the Bio Bidet Discovery DLX Smart Toilet if Get the Bio Bidet Discovery DLX if integrated one-piece aesthetics matter and $1,699 is the ceiling — core smart-toilet UX without the TOTO or Kohler price tag..
The toilet lives in a bathroom nobody sees, there is no 120V GFCI outlet nearby, or your budget is under $1,500 — the smart bidet seat attachment route delivers most of the UX at a fraction of the cost.
Related deep-dives
Sources & Methodology
Methodology: SHE Hygiene Automation Score — Formula: (Self-Sanitizing Technology × 0.35) + (Bidet Wash Performance × 0.25) + (Toilet Paper Reduction Potential × 0.15) + (Smart-Home Integration × 0.15) + (Long-Term Durability × 0.10). Factors: Self-Sanitizing Technology (35%): Presence and effectiveness of UV, electrolyzed water (EWATER+), or photocatalytic (ACTILIGHT) bowl and wand sanitization systems. Weighted highest because it is the primary hygiene differentiator between integrated smart toilets and standard fixtures. | Bidet Wash Performance (25%): Nozzle material (stainless vs plastic), water pressure range, temperature precision, and feminine-wash mode quality as assessed across KBAuthority, bob-vila, and this-old-house reviewer panels. | Toilet Paper Reduction Potential (15%): Warm-air dryer effectiveness and warm-wash quality — the combination that determines how successfully the unit replaces toilet paper use. Scored on dryer temperature, airflow, and time-to-dry reviewer benchmarks. | Smart-Home Integration (15%): Native voice assistant support, manufacturer app availability, and compatibility with major smart-home platforms (Alexa, Google Home, HomeKit). Weighted to reflect buyer-segment interest without overvaluing connectivity versus hygiene function. | Long-Term Durability (10%): Brand engineering heritage, fixture longevity rating, and repair-network quality — including dealer vs big-box channel accessibility and typical lead time for replacement parts.
Expert review sources used in this analysis:
- SmartHomeExplorer aggregated expert reviews from bob-vila, this-old-house, consumerreports, reviewed, good-housekeeping, cnet, and digitaltrends, plus manufacturer specification sheets from TOTO and Kohler
- The SHE Hygiene Automation Score is a proprietary five-factor weighted formula rubric (Self-Sanitizing Technology 35%, Bidet Wash Performance 25%, Toilet Paper Reduction Potential 15%, Smart-Home Integration 15%, Long-Term Durability 10%) developed for this integrated smart toilet category
- Installation cost data from Angi's 2026 bidet-installation cost calculator
- Amazon pricing verified as of May 2026
- Ecosystem compatibility (Alexa, Google, HomeKit) verified against Kohler and TOTO product documentation.
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.
Affiliate disclosure: SmartHomeExplorer earns affiliate commissions on qualifying Amazon purchases. Our scoring methodology is independent of affiliate relationships.
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