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Best Smart Toilets of 2026: Bidet Combo, Auto Flush

Smart toilets combine a heated seat, warm-water bidet wash, auto flush and self-cleaning into one fixture. We ranked the best smart toilets of 2026 by MaP flush-test grams, EPA WaterSense water use, bidet wash quality, auto-lid and auto-flush reliability, and aggregated owner feedback across thousands of verified reviews, so you can invest in a fixture that actually earns its higher price.

Why Trust Best Flushing Toilets

  • Flushing power and MaP flush-test scores
  • Water efficiency (GPF and EPA WaterSense)
  • Aggregated owner reviews
  • Clog resistance and trapway design
  • Brand reliability and warranty

Research updated June 2026.

Quick Answer

The TOTO Neorest NX2 is the best smart toilet for most buyers in 2026. It pairs a dual Tornado flush rated at 800 grams MaP on just 0.8 or 1.0 GPF with TOTO's Actilight UV self-cleaning, an instant-heated bidet wand, auto-open lid, auto flush, and 30 years of proven TOTO reliability, all in a seamless skirted body. For buyers who want that full bidet-and-auto-flush package without the premium price, the Woodbridge B-0950S is the most capable value smart toilet available today.

A smart toilet packs what used to be four separate purchases, a toilet, a bidet seat, a heated seat and an auto-flush kit, into one factory-engineered fixture. The bowl, bidet wand, warm-air dryer, deodorizer, motion sensor, auto-flush valve and lid actuator are all calibrated together at the factory, which is why the best integrated smart toilets flush more reliably, stay cleaner longer and look sleeker than any DIY-stacked setup. The catch is that combining a bowl and an electronics package raises the stakes on every component: a weak flush, a wand that drips, a lid that stutters or an electronics board that fails after 18 months turns a high-price fixture into a liability.

We do not install or test these toilets ourselves. Instead we compare published manufacturer specifications, independent MaP (Maximum Performance) flush-test results, EPA WaterSense certification data, bidet wash specs, electrical safety ratings and warranty terms, then weigh them against patterns across thousands of verified owner reviews. We ranked these picks first on flush performance, because a smart toilet that cannot clear a bowl cleanly in one pass is a failure regardless of its feature list, then on bidet wash quality, self-cleaning effectiveness, auto-feature reliability and long-term brand support. For the full flush-performance ranking across all toilet types, start with our guide to the best flushing toilets.

Which Smart Toilet Has the Strongest Flush?

The TOTO Neorest NX2 and Neorest RH both achieve 800-gram MaP scores, the highest rating available, while using just 0.8 to 1.0 GPF on their light flush. The Kohler Numi 2.0 also reaches 800 grams MaP at 0.8/1.28 GPF. MaP (Maximum Performance) testing, conducted independently at map-testing.com, measures how many grams of simulated waste a toilet clears in a single flush; 600 grams is the EPA WaterSense minimum, and 800 grams is effectively the ceiling for residential toilets.

What Is a Good MaP Score for a Smart Toilet?

A MaP score of 600 grams or higher is considered good for a smart toilet, and 800 grams is excellent. The EPA WaterSense program requires a minimum of 350 grams for certification, but smart toilets from TOTO and Kohler regularly reach 600 to 800 grams at 1.28 GPF or less. Cheaper integrated units often score 350 to 500 grams, meaning they may require a second flush for solid waste, which eliminates the water savings their low GPF rating implies.
ToiletBest ForMaP ScoreGPF (Full/Light)RatingCheck Price
TOTO Neorest NX2Best overall800 g0.8 / 1.04.7Check price
TOTO Neorest RHStrongest flush800 g0.9 / 1.284.6Check price
Kohler Numi 2.0Most features800 g0.8 / 1.284.5Check price
Kohler Veil IntelligentSkirted designer800 g0.8 / 1.284.5Check price
Woodbridge B-0950SBest value600 g0.8 / 1.284.5Check price
TOTO Drake + Washlet S7ABest upgrade path800 g1.28 / 0.94.7Check price
Swiss Madison VivanteBudget smart500 g0.8 / 1.284.3Check price
Woodbridge T-0019STankless look600 g0.8 / 1.284.4Check price
American Standard Advanced Clean 100Familiar brand600 g1.0 / 1.284.4Check price

The 9 Best Smart Toilets of 2026, Reviewed

TOTO Neorest NX2 smart toilet
1
Best Overall

TOTO Neorest NX2

4.7 Most buyers

The Neorest NX2 is the smart toilet we recommend first because it solves the most important problem in the category: it flushes as powerfully as TOTO's best standard toilets despite housing an entire electronics package inside the seat and lid assembly.

Flush TypeDual Tornado, siphon jet
GPF0.8 / 1.0
MaP Score800 grams
Bowl HeightComfort height, elongated
Warranty1-year limited (electronics)
Best For
  • Hands-free wash, dry and auto-flush routine
  • 800-gram flush power inside an integrated toilet
  • Buyers who value TOTO's proven long-term reliability
Not Ideal For
  • Tight budgets, as it is a premium fixture
  • Bathrooms with no nearby GFCI outlet

The Neorest NX2 runs TOTO's dual Tornado flush, which fires water through two angled nozzles to create a full-coverage swirling rinse, paired with the Actilight system: UV-activated titanium dioxide glaze that breaks down organic residue on the bowl surface between uses. The eWater+ system mists both the bowl and the retractable bidet wand with electrolyzed water before and after use, killing bacteria without chemical cleaners. The CeFiONtect ion-barrier glaze keeps the bowl surface so smooth that waste and mineral deposits struggle to adhere.

The seat features five-level temperature control, five-level heated water, warm-air drying, a deodorizer, an automatic lid that opens and closes via proximity sensor, and a fully hands-free auto flush. Aggregated owner reviews note that the lid and flush sensors are among the most reliable in the category, with far fewer false triggers or missed activations than competing units. The 1-year electronics warranty is shorter than what a few competitors offer, but TOTO's parts network makes post-warranty repairs far more accessible than lesser brands.

Expert Take

If flush performance is the first question on your list for any smart toilet, the NX2 answers it definitively. The 800-gram MaP score at just 0.8 GPF is not a specification to gloss over: that is the same flush rating that TOTO's Drake II reaches on 1.28 GPF, delivered at nearly half the water volume. Buyers who want this level of flush confidence and accept the price are getting one of the most water-efficient, waste-clearing smart toilets ever made. The Actilight UV self-cleaning is the most scientifically grounded bowl-maintenance system in the residential market.

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Bottom Line: The most complete and performance-proven smart toilet in the residential market, with an 800-gram flush, UV self-cleaning bowl, and TOTO reliability all in one fixture.
TOTO Neorest RH smart toilet
2
Strongest Flush

TOTO Neorest RH

4.6 Power flush buyers

The Neorest RH delivers TOTO's highest-rated flush in a smart toilet body, earning 800 grams MaP at 0.9 or 1.28 GPF, making it the top choice for households where clog resistance and full-bowl clearance matter more than hitting the lowest possible water volume.

Flush TypeDual Tornado, siphon jet
GPF0.9 / 1.28
MaP Score800 grams
Bowl HeightComfort height, elongated
Warranty1-year limited
Best For
  • Large families who want zero-miss flush reliability
  • Buyers who want the NX2 feature set with more flush volume
  • Households with known low-pressure plumbing
Not Ideal For
  • Buyers prioritizing the absolute lowest GPF
  • Small bathrooms where the NX2's slightly slimmer profile is a benefit

The Neorest RH is almost identical to the NX2 in its electronics package: heated seat, instant-heated bidet wash, warm-air dryer, eWater+ wand and bowl misting, Actilight UV system, auto lid and auto flush. Where it differs is in its full-flush volume of 1.28 GPF, which gives the Tornado flush more hydraulic force to carry waste through the trap. For households with older plumbing or long horizontal runs, that extra water volume reduces the already-low chance of a partial clearance.

Owners of the Neorest RH specifically cite the near-silent flush as a standout feature, a product of the siphon action completing quietly rather than by pressure noise. The Actilight glaze and eWater+ misting are the same as the NX2, and the bidet wash quality is considered equivalent. For large families with heavy daily use, the slightly higher water volume of the Neorest RH is a reasonable trade for consistent waste clearance without repeat flushes.

Expert Take

Choose the Neorest RH over the NX2 when you know your water pressure is inconsistent or when multiple people use the bathroom in rapid succession each morning. The 1.28 GPF full-flush setting gives the Tornado system more reliable hydraulic assist, and the flush noise stays remarkably low despite the higher volume. The two toilets are otherwise nearly identical in features and quality.

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Bottom Line: The Neorest RH gives you the same full smart-toilet feature set as the NX2 with more flush volume for households where clog resistance is non-negotiable.
Kohler Numi 2.0 smart toilet
3
Most Advanced

Kohler Numi 2.0

4.5 Tech-forward bathrooms

The Kohler Numi 2.0 is the most feature-dense smart toilet available from a major North American plumbing brand, pairing an 800-gram MaP flush with voice control via Amazon Alexa, foot warmer, ambient lighting, integrated Bluetooth speaker, and one of the most sophisticated bidet wash systems on the market.

Flush TypeClass Five siphon jet
GPF0.8 / 1.28
MaP Score800 grams
Bowl HeightComfort height, elongated
Warranty3-year limited
Best For
  • Buyers who want Alexa voice control and Kohler app integration
  • Master bathrooms where ambient lighting is a design priority
  • Long-term owners who value Kohler's 3-year warranty
Not Ideal For
  • Buyers who want the wash-and-dry simplicity of TOTO's eWater+ system
  • Small bathrooms, as the Numi 2.0 is a large fixture

Kohler's Class Five flush technology uses a large canister valve to release the full tank volume in a single powerful surge, which is why the Numi 2.0 reaches 800 grams MaP at 1.28 GPF. The 0.8 GPF light flush is primarily suited for liquid waste. The bidet system delivers adjustable rear and front wash with oscillation and pulsation, a heated seat with three levels, a warm-air dryer with three levels, and a UV-light wand sanitizer. The lid opens automatically via approach sensor, the flush fires on departure, and the Kohler Konnect app allows custom user profiles so each household member gets their preferred temperature and pressure settings saved.

Kohler's 3-year limited warranty is the longest standard coverage among the top-tier smart toilets listed here, which reduces the risk of a costly electronics repair in the mid-term ownership window. Aggregated reviews note that the approach sensor is reliable but slower to respond than TOTO's equivalent, and that the foot warmer is a genuinely appreciated feature in cold climates rather than a marketing gimmick. For households that are already inside the Kohler Konnect ecosystem, the integration is seamless.

Expert Take

The Numi 2.0's 3-year warranty at this feature level is a real differentiator. Smart toilet electronics carry genuine failure risk in years two and three, and Kohler's extended coverage is a tangible financial advantage over TOTO's 1-year terms. If you are choosing between the Numi 2.0 and the Neorest NX2 purely on product quality, the NX2 edges ahead on flush efficiency and self-cleaning design; on warranty and smart-home integration, the Numi 2.0 wins clearly.

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Bottom Line: The Numi 2.0 is Kohler's best smart toilet and the right pick for buyers who want Alexa control, ambient lighting and a 3-year warranty alongside an 800-gram flush.
Kohler Veil Intelligent Toilet
4
Designer Pick

Kohler Veil Intelligent Toilet

4.5 Skirted design

The Kohler Veil Intelligent Toilet combines the flush performance of Kohler's best one-piece skirted bowl with a full integrated bidet and auto-flush package, making it the best smart toilet for buyers who are as focused on the bathroom's visual design as they are on the features.

Flush TypeClass Five canister, siphon jet
GPF0.8 / 1.28
MaP Score800 grams
Bowl HeightComfort height, elongated
Warranty1-year limited
Best For
  • Modern bathrooms where a fully skirted profile is a design requirement
  • Buyers wanting 800-gram flush performance at a lower entry point than the Numi 2.0
  • Kohler ecosystem owners who want a consistent product family
Not Ideal For
  • Buyers who want Alexa integration, which is on the Numi 2.0 only
  • Households needing foot-warmer or ambient lighting extras

The Veil Intelligent Toilet uses Kohler's Class Five flush, the same canister-valve system in the Numi 2.0, to reach 800 grams MaP. The skirted trapway eliminates the exposed curves and ridges that standard toilets accumulate grime on, reducing cleaning time significantly in the real-world ownership experience. The bidet seat function delivers rear and front wash with adjustable pressure and temperature, a heated seat with three levels, a warm-air dryer, a UV wand sanitizer, and an auto-open lid and auto flush via approach and departure sensors.

The Veil sits lower in the price hierarchy than the Numi 2.0 while keeping the same flush mechanism and most of the same bidet features. What it gives up is the ambient lighting ring, foot warmer, Bluetooth speaker and Alexa voice control. For buyers who view those features as unnecessary extras and care primarily about a clean skirted silhouette with a strong flush and a full bidet, the Veil Intelligent Toilet hits a better value point within the Kohler smart line. See our guide to the best toilets for home use for how the Veil compares to non-smart skirted options.

Expert Take

The Veil Intelligent Toilet is the Kohler smart toilet to buy if the Numi 2.0's extra features feel like excess. You keep the 800-gram flush, the full bidet and auto features, and the clean skirted profile, and the cost reduction is substantial. The trade-off is minimal for buyers who do not want Alexa integration or ambient lighting.

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Bottom Line: A skirted 800-gram smart toilet with a full bidet feature set at a more accessible price than the Numi 2.0, with Kohler's proven Class Five flush engine.
Woodbridge B-0950S smart toilet
5
Best Value

Woodbridge B-0950S Smart Toilet

4.5 Value buyers

The Woodbridge B-0950S is the most complete smart toilet available below the TOTO and Kohler price tier, delivering a 600-gram MaP flush, dual-flush at 0.8 and 1.28 GPF, a full auto-open lid, auto flush, instant-heated bidet wash, warm-air dryer, heated seat and remote control in a one-piece skirted body.

Flush TypeDual gravity siphon jet
GPF0.8 / 1.28
MaP Score600 grams
Bowl HeightComfort height, elongated
Warranty5-year structural, 1-year seat electronics
Best For
  • Buyers who want the full smart-toilet experience without a luxury price
  • Guest bathrooms or primary bathrooms in households without heavy daily use
  • First-time smart toilet buyers comparing features before committing to premium
Not Ideal For
  • Households with three or more people using the toilet daily, where 600 grams MaP may require occasional second flushes
  • Buyers who want TOTO or Kohler parts availability for long-term service

Woodbridge's flush mechanism is a standard gravity siphon jet rather than a multi-directional vortex, which is why the B-0950S scores 600 grams MaP rather than 800. That is still comfortably above the EPA WaterSense minimum of 350 grams and well above the residential pass threshold. The bidet seat integrates into the one-piece body, running on instant on-demand water heating so the warm wash does not time out after 60 seconds the way cheaper reservoir seats do. The remote includes front and rear wash modes, five pressure levels, oscillation and pulsation, five seat temperature levels and three dryer heat levels.

Woodbridge offers a 5-year structural warranty on the ceramic body, which compares favorably to TOTO and Kohler, though the 1-year electronics warranty is the same. Owner reviews consistently highlight that the seat electronics feel comparable to mid-range standalone bidet seats from established brands, which is the main quality argument for the B-0950S: for buyers who would otherwise buy a good bidet seat and a separate basic toilet, the integrated price and feature count of the Woodbridge are hard to argue with. Woodbridge also makes the T-0001 and T-0019 series in their traditional lineup, so the brand has a manufacturing track record worth considering.

Expert Take

The Woodbridge B-0950S is the answer when someone asks for the smart toilet that does everything without the luxury price. Its flush is not as powerful as TOTO's Tornado, but 600 grams MaP is adequate for most households, and its bidet seat is on par with what standalone seats cost separately. The biggest real risk is not feature quality but parts availability in three to five years if the electronics need service, which is worth knowing before you commit.

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Bottom Line: The best value smart toilet for buyers who want auto flush, auto lid, instant-heat bidet wash and a skirted one-piece body without a premium brand price.
TOTO Drake II Washlet S7A combo
6
Best Upgrade Path

TOTO Drake II + Washlet S7A

4.7 Upgrade builders

Pairing the TOTO Drake II, one of the highest-rated flushing toilets in the MaP database at 800 grams on 1.28 GPF, with the Washlet S7A bidet seat delivers the full smart-toilet experience with the upgrade flexibility, service ease and flush certainty of a proven two-piece setup.

Flush TypeDouble Cyclone siphon jet (Drake II)
GPF1.28 / 0.9 (Washlet S7A flush button)
MaP Score800 grams (Drake II)
Bowl HeightComfort height, elongated
Warranty1-year toilet, 1-year seat
Best For
  • Buyers who want the highest-verified TOTO flush without an integrated-unit price
  • Anyone who wants to service or replace the bidet seat independently
  • Households that already own a Drake or Drake II and want to upgrade the seat
Not Ideal For
  • Buyers who want a seamless integrated silhouette without a visible seat gap
  • Bathrooms where remote controls and cables need to be completely hidden

The TOTO Drake II is one of the most independently validated toilets on the residential market: its Double Cyclone flush uses two nozzles to send water around the full rim while a powerful siphon jet clears the trap, earning 800 grams MaP on 1.28 GPF and consistently ranking among the top performers in MaP database logs. Adding the Washlet S7A delivers instant on-demand heated water, rear and front wash with oscillation and pulsation, a heated seat, warm-air dryer, EWATER+ pre-mist and wand sanitation, and an integrated remote on a side panel.

The practical advantage over an integrated smart toilet is repairability: if the Washlet S7A seat develops an issue, TOTO's extensive parts network can address it, and the Drake II bowl underneath continues functioning perfectly. This matters more than buyers expect at purchase, because a fully integrated smart toilet that loses its electronics can be difficult to service without a specialist. This setup also allows future seat upgrades without replacing the bowl. For the full picture of how the Drake II ranks against every other high-flush toilet, see our guide to the best toilets of 2026.

Expert Take

The Drake II plus S7A is the smart-toilet setup we recommend to buyers who are genuinely concerned about long-term serviceability. The combined cost is often lower than a fully integrated unit, the flush performance is verified at 800 grams, and if either component needs service five years from now, TOTO's dealer and parts network is one of the deepest in North America. The aesthetic trade-off of the seat gap is real, but the practical benefits in a main bathroom are significant.

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Bottom Line: The smartest way to build a smart toilet setup for buyers who want TOTO's proven 800-gram flush engine, independent serviceability, and a full Washlet feature set.
Woodbridge T-0019S smart toilet
7
Best Tankless Look

Woodbridge T-0019S Smart Toilet

4.4 Tankless aesthetic

The Woodbridge T-0019S delivers a fully integrated smart toilet in a wall-tank-style body that conceals the water tank behind a slim rear panel, giving the bathroom a near-tankless visual profile with the simpler plumbing of a standard floor-mounted toilet.

Flush TypeGravity dual siphon
GPF0.8 / 1.28
MaP Score600 grams
Bowl HeightComfort height, elongated
Warranty5-year structural, 1-year electronics
Best For
  • Modern bathrooms where a low-profile, near-tankless look is a priority
  • Buyers who want smart-toilet features without wall-hung toilet installation complexity
  • Value buyers drawn to clean architectural lines
Not Ideal For
  • Households needing 800-gram flush reliability for solid waste
  • Buyers who prioritize a brand with deep North American parts support

The T-0019S uses the same gravity siphon flush as other Woodbridge smart models, scoring 600 grams MaP, but its distinguishing feature is the elongated rear housing that gives the toilet a wall-tank silhouette without requiring any in-wall plumbing modifications. The smart seat integrates heated wash, drying, deodorizer, auto open and close and auto flush via the included remote, and the seat uses instant on-demand water heating for an unlimited warm wash.

For buyers who have admired tankless toilet aesthetics but are not prepared for the cost of wall-hung installation, the T-0019S is a practical compromise. Owner reviews note the auto-lid sensor works consistently and that the flush, while not as powerful as TOTO's Tornado, handles typical household use without complaint. The 5-year ceramic warranty covers the part least likely to fail, while the 1-year electronics warranty is the standard that applies to the components that actually matter over time.

Expert Take

The T-0019S makes the most sense in a design-forward bathroom where the visual of a standard tank would detract from the aesthetic, and where the budget does not support a true wall-hung toilet installation. The smart features are comparable to the B-0950S; the differentiation is purely the exterior form factor. It is a valid choice, but buyers should be clear-eyed that it is primarily a design decision rather than a performance one.

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Bottom Line: A smart toilet with a slim, near-tankless silhouette and a full integrated bidet and auto-flush feature set for design-conscious buyers who want standard floor-mount installation.
American Standard Advanced Clean 100 SpaLet bidet toilet
8
Familiar Brand

American Standard Advanced Clean 100 SpaLet

4.4 Brand loyalty

The American Standard Advanced Clean 100 SpaLet bidet toilet gives buyers who prefer a familiar North American brand a complete integrated smart-toilet experience with a 600-gram MaP flush, EPA WaterSense certification, and an American Standard parts network behind it.

Flush TypeEverClean gravity siphon jet
GPF1.0 / 1.28
MaP Score600 grams
Bowl HeightComfort height, elongated
Warranty1-year seat, lifetime ceramic
Best For
  • Buyers who want an established North American brand with accessible service
  • Homes where American Standard's EverClean antimicrobial surface is a priority
  • Buyers adding a smart toilet to a bathroom already fitted with American Standard fixtures
Not Ideal For
  • Buyers who want the TOTO or Kohler self-cleaning UV bowl system
  • Households needing the highest MaP flush at a low GPF volume

American Standard's EverClean surface bonds an antimicrobial agent into the glaze that inhibits the growth of bacteria, mold and mildew on the ceramic surface, which is different from TOTO's eWater+ chemical misting but serves a similar long-term hygiene function. The 100 SpaLet bidet seat delivers rear and front wash with adjustable pressure and temperature, a heated seat, warm-air drying, and a handheld remote. The EverClean flush uses a siphon jet that the brand has refined across its Champion 4 and Cadet 3 lines, meaning the underlying bowl has a proven track record before the smart-seat electronics were added.

The lifetime ceramic warranty is a meaningful advantage: American Standard covers the toilet body for the life of the product, which no other brand on this list matches for the porcelain. The 1-year electronics warranty is the same industry standard, but the long-term service advantage of an American Standard bowl, supported by a major brand with wide plumber familiarity, is worth noting. For buyers comparing smart toilets across all comfort heights, see our guide to the best toilets for seniors where the Advanced Clean 100 also appears.

Expert Take

The main argument for the American Standard Advanced Clean 100 over a Woodbridge at a similar price is the brand's depth: American Standard plumbers are everywhere, the parts are stocked at major distributors, and the EverClean glaze is a proven antimicrobial system. If you want the certainty that comes with a company that has supplied the North American residential market for over 140 years, that reliability premium has real value.

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Bottom Line: American Standard's integrated bidet toilet brings a familiar brand's depth of service support and a lifetime ceramic warranty to the smart-toilet category.
Swiss Madison Vivante smart toilet
9
Budget Smart

Swiss Madison Vivante Smart Toilet

4.3 Entry smart buyers

The Swiss Madison Vivante is the lowest-priced true integrated smart toilet we can recommend, offering a complete dual-flush, auto-lid, bidet-wash-and-dry package in a clean one-piece skirted body for buyers who want the category experience before committing to a premium fixture.

Flush TypeDual gravity siphon
GPF0.8 / 1.28
MaP Score500 grams
Bowl HeightComfort height, elongated
Warranty1-year limited
Best For
  • First-time smart toilet buyers who want to try the category without a large investment
  • Guest bathrooms with low daily use
  • Rental properties where a basic smart-toilet feature set adds value
Not Ideal For
  • Primary bathrooms in households with three or more daily users
  • Buyers who need long-term parts support, as Swiss Madison's network is shallow

Swiss Madison's Vivante uses a straightforward gravity dual-flush siphon jet that scores 500 grams MaP, clearing the EPA WaterSense minimum comfortably. The bidet seat integrates rear and front wash, a heated seat, a warm-air dryer, an auto open and close lid, and an auto flush via a handheld remote. The wash water is heated via an instant on-demand system rather than a reservoir, which puts it above the cheapest entry-level smart seats that run cool after 60 seconds. Swiss Madison's St. Tropez line established the brand in the North American market as a value European-design-influenced option, and the Vivante extends that aesthetic positioning into the smart-toilet category.

The honest limitation of the Swiss Madison Vivante is parts availability: Swiss Madison does not have the dealer and distributor depth of TOTO, Kohler or American Standard, and if the electronics board fails outside warranty, sourcing a replacement part takes more effort. For a guest bathroom or a low-use application, that risk is manageable; for a primary bathroom relied on daily, a brand with a deeper service network is worth the higher entry cost. The Vivante's 500-gram MaP flush is adequate for typical household waste loads but may require a second flush under heavier conditions.

Expert Take

The Vivante is the right recommendation for a budget-minded buyer who wants to experience the smart-toilet lifestyle, not a permanent fixture for a primary bathroom in a busy household. If you use it, like it, and want more flush power and better long-term service coverage, upgrading to a Woodbridge or TOTO later is easy because the rough-in is standard. Think of it as an audition fixture rather than a lifetime purchase.

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Bottom Line: The most accessible entry point into integrated smart toilets, best suited for guest bathrooms, low-use spaces, or first-time smart toilet buyers.
Expert Take: What to prioritize when choosing a smart toilet

The most common mistake buyers make with smart toilets is comparing feature lists rather than flush performance first. A smart toilet with a 350-gram MaP flush and a beautiful bidet seat will still need a second flush several times a week, eliminating its water savings and creating frustration. Start with MaP score, because that number is the only third-party verified measurement of what the toilet actually clears. Then evaluate the bidet wash system, specifically whether it uses instant on-demand heating or a reservoir, because a reservoir heats water for only 60 to 90 seconds before going cold. After those two fundamentals are confirmed, evaluate auto features, self-cleaning systems, warranty terms and brand service depth. On those criteria, TOTO leads on flush engineering and self-cleaning, Kohler leads on smart-home integration and warranty duration, and Woodbridge leads on value for buyers who accept a lower MaP number.

Smart Toilet Buying Guide: What to Know Before You Buy

Buying a smart toilet requires decisions across four dimensions that standard toilet buying does not: the flush mechanism and MaP score, the bidet seat design and water-heating method, the auto-feature reliability, and the long-term electronics serviceability. Each of those dimensions can determine whether the toilet is a lasting upgrade or an expensive problem.

Flush performance is non-negotiable

A smart toilet's electronics add weight, complexity and cost, but they do not improve the flush. The flush engine is the same gravity siphon, pressure-assist or Tornado-style mechanism found in standard toilets, and it needs to score at least 500 grams MaP to handle a realistic household waste load without a second flush. The MaP testing program at map-testing.com tests residential toilets by flushing a standardized soybean paste media in 50-gram increments until the toilet fails to clear. The EPA WaterSense program requires 350 grams as a minimum for certification, but the residential reality is that 500 to 600 grams is adequate for most households and 800 grams is the standard for heavy-use reliability. Smart toilets from TOTO and Kohler reach 800 grams MaP; most value-tier integrated units score 500 to 600 grams, which is acceptable but not equivalent. If your household includes three or more people, choose 600 grams or higher.

Bidet wash quality: instant heat vs. reservoir

The warm-water wash is often the reason a buyer chooses a smart toilet over a standard one, and the water-heating method determines how long that warm wash lasts. A reservoir heater warms a small tank (typically 0.03 to 0.1 liters) before use, giving you a warm wash for roughly 30 to 90 seconds before the water temperature drops. An instant on-demand heater warms water as it flows through a ceramic or coil heating element, so the wash is warm for as long as you run it. Premium smart toilets from TOTO and Kohler use instant on-demand heating; so do the better Woodbridge and American Standard models. Avoid any integrated unit that does not specify which method it uses, as this is the detail most often omitted on budget listings.

What auto features actually work reliably

Auto-open lids, auto-flush sensors and night lights are the three most-marketed auto features in smart toilets, and they vary significantly in reliability across brands. Approach sensors that open the lid work by detecting infrared movement within a defined zone; cheaper implementations trigger false opens from nearby movement outside the bathroom or fail to detect a seated user rising. Departure sensors that fire the flush have the same problem in reverse. TOTO and Kohler's sensor implementations draw consistently positive owner feedback on accuracy; Woodbridge's sensors are considered functional but occasionally trigger incorrectly. The night light is a convenience feature; the ones that annoy owners are those that are too bright to ignore but not adjustable.

What "self-cleaning" actually means by brand

TOTO's eWater+ system mists the bowl and wand nozzle with electrolyzed water (slightly acidic water that is antibacterial without using chemicals) before and after each use. The Actilight system adds UV light exposure to the titanium-dioxide-coated bowl surface to break down organic matter. Kohler's Numi 2.0 uses a UV-light wand sanitizer that disinfects the nozzle. American Standard's EverClean surface bonds antimicrobial agents into the glaze to inhibit bacterial growth on the porcelain. Woodbridge and Swiss Madison units include wand self-rinse cycles but do not use UV or electrolyzed water systems. For buyers for whom hygiene is the primary purchase driver, TOTO's dual-system eWater+ and Actilight combination is the most scientifically comprehensive available in a residential toilet.

EPA WaterSense and water savings in practice

EPA WaterSense certification requires a maximum of 1.28 GPF and a minimum MaP score of 350 grams. All of the top picks listed here meet WaterSense standards on their full flush. The most efficient, the TOTO Neorest NX2 at 0.8 GPF full flush, uses 37.5% less water per flush than the 1.28 GPF WaterSense maximum. At 10 flushes per day in a two-person household, the NX2 saves roughly 1,752 gallons per year compared to a standard 1.28 GPF WaterSense toilet. EPA's WaterSense program lists certified models at epa.gov/watersense, and checking that list before purchase confirms the manufacturer's GPF claim is independently verified rather than self-reported.

Which Smart Toilet Is Best for Preventing Clogs?

Among smart toilets, the TOTO Neorest NX2 and Neorest RH are the best for clog prevention, both achieving 800 grams MaP while using 0.8 to 1.28 GPF. The Kohler Numi 2.0 and Veil Intelligent also reach 800 grams MaP using Kohler's Class Five canister-flush system. Smart toilets that score only 350 to 500 grams MaP are more likely to require a second flush for solid waste, which increases the risk of partial clogs. For households that want clog-proof reliability, 600 grams MaP is a safe minimum, and 800 grams is the target for heavy use.

What Is the Difference Between a Smart Toilet and a Bidet Toilet Seat?

A smart toilet is a fully integrated one-piece fixture where the bidet wash function, heated seat, auto flush and auto lid are engineered into the bowl body at the factory. A bidet toilet seat (such as the TOTO Washlet S550e or S7A) is an electronic seat that replaces the standard toilet seat on an existing bowl and adds warm-water wash, heated seat and dryer functions. The integrated smart toilet costs more and requires the bowl and electronics to be replaced together, but produces a seamless visual appearance. The bidet seat upgrade is more flexible, less expensive, and lets you replace the bowl and seat independently if either fails.

Do Smart Toilets Need a Dedicated Electrical Circuit?

Most smart toilets require a standard 120V household outlet within two to three feet of the toilet, ideally a GFCI-protected outlet as required by the National Electrical Code for bathroom receptacles within six feet of water. They do not typically require a dedicated circuit, as most integrated bidet seats draw 500 to 1,400 watts on a shared 15-amp circuit. However, if the bathroom has no existing outlet near the toilet, installing one requires a licensed electrician. Buyers should confirm outlet placement and GFCI protection before purchasing, as this is the installation step most commonly overlooked.

Frequently Asked Questions

? Are smart toilets worth the cost?

For primary bathrooms where the toilet is used multiple times daily, a smart toilet with a heated seat, warm bidet wash and auto flush offers a meaningful upgrade in hygiene and comfort. The financial case depends on the model: premium units from TOTO and Kohler carry a high initial cost but have low failure rates and proven parts availability. Budget-tier units have a much lower entry cost but a higher risk of electronics failure outside warranty. Compared to buying a standard toilet plus a quality bidet seat separately, an integrated smart toilet from a mid-tier brand like Woodbridge often costs similar or less.

? How long do smart toilets last?

The ceramic body of a smart toilet lasts as long as any toilet, typically 30 or more years if not physically damaged. The electronics, including the bidet seat assembly, sensors, lid actuator and control board, have a typical lifespan of 8 to 15 years depending on brand, usage frequency and maintenance. TOTO and Kohler have stronger parts availability beyond the warranty period than newer brands, which significantly affects real-world longevity after the warranty expires.

? Can I install a smart toilet myself?

The plumbing connection for a smart toilet is the same as a standard toilet, a wax ring, bolts to the floor flange, and a supply line to the fill valve, which most homeowners with basic plumbing experience can complete. The additional step is connecting the power supply to a nearby GFCI outlet. If the bathroom has no existing outlet near the toilet, a licensed electrician must install one. The complexity rises if the toilet is a wall-hung model or if the smart seat's water inlet needs to be connected separately from the toilet's fill valve.

? What is EPA WaterSense, and do smart toilets qualify?

EPA WaterSense is a voluntary certification program that identifies high-efficiency fixtures. To earn WaterSense certification, a toilet must flush at or below 1.28 GPF and pass a minimum MaP test of 350 grams. All of the top-tier smart toilets listed here, including the TOTO Neorest NX2, Kohler Numi 2.0 and American Standard Advanced Clean 100, carry WaterSense certification. The EPA publishes a current list of certified products at epa.gov/watersense, which is the most reliable way to verify a manufacturer's GPF claim.

? What does a smart toilet's MaP score mean?

MaP (Maximum Performance) testing is an independent flush-performance test conducted by Veritec Consulting and Koeller and Company, published at map-testing.com. Testers flush a standardized soybean-paste media load through the toilet in 50-gram increments to find the maximum weight the toilet clears completely in a single flush. A score of 350 grams meets the EPA WaterSense minimum; 600 grams is adequate for most households; 800 grams is the highest score achievable and indicates the toilet will clear heavy waste loads in a single flush consistently.

? What is the difference between TOTO's eWater+ and Actilight systems?

eWater+ is TOTO's electrolyzed water system that mists the bowl and wand nozzle with slightly acidic water before and after each use, providing antibacterial cleaning without chemical products. Actilight is a separate UV-light system that activates a titanium dioxide coating on the Neorest bowl surface, breaking down organic matter when the UV light is on, typically during seat-closed intervals. The two systems work together: eWater+ cleans the wand and interior surfaces after use, while Actilight degrades residue on the glazed bowl surface over time. Both are exclusive to the TOTO Neorest line.

? Do smart toilets work during a power outage?

During a power outage, the flush mechanism on most integrated smart toilets still operates as a manual toilet, because the tank fills by water pressure, not electricity. The bidet seat, heated seat, lid actuator, sensors and dryer all require power and will not function during an outage. Some models include a manual flush lever or button as a backup. Buyers in areas with frequent power interruptions should confirm that the specific model has a manual flush option before purchasing.

? What is the standard rough-in for smart toilets?

Most smart toilets use a standard 12-inch rough-in (the distance from the finished wall to the center of the floor drain), which is the same as the majority of North American toilet installations. A few elongated models specify 10-inch or 14-inch rough-ins. Measuring your existing rough-in before purchasing ensures compatibility. The rough-in measurement is taken from the finished wall surface, not the baseboard or stud.

? Is TOTO or Kohler better for smart toilets?

TOTO leads on flush engineering, self-cleaning bowl technology (eWater+ and Actilight) and bidet seat quality, and it has the deepest smart-toilet product line globally. Kohler leads on smart-home integration (Alexa, Konnect app), warranty duration (Numi 2.0 carries a 3-year warranty vs. TOTO's 1-year), and aesthetic variety in their smart line. For buyers who prioritize flush performance and self-cleaning, TOTO is the stronger choice. For buyers who want voice control and longer warranty coverage, Kohler has the advantage.

? Can smart toilets use a bidet and auto flush at the same time?

Smart toilets do not run the bidet wash and auto flush simultaneously; the two functions operate in sequence. The auto-flush sensor detects when you stand or step away from the toilet and triggers the flush after you have vacated the seat. The bidet wash runs while you are seated. Some units have an optional seat-sensor interlock that prevents the flush from firing while the seat is occupied, which is the standard safety design for any properly engineered smart toilet.

? Are smart toilets good for elderly users?

Smart toilets can significantly improve bathroom comfort and hygiene for elderly users. The heated seat eliminates cold shock, the bidet wash reduces the physical exertion of wiping, the warm-air dryer eliminates reaching, and the auto-open lid removes a step that can be difficult for users with arthritis or limited mobility. Comfort-height bowls (typically 17 to 19 inches to the top of the seat) reduce the strain of sitting and standing. For a detailed look at toilets optimized for aging in place, see our guide to the best toilets for seniors.

? What GPF is most water-efficient in a smart toilet?

The TOTO Neorest NX2 flushes at 0.8 GPF on its full cycle, which is the lowest GPF available in a certified residential smart toilet while still achieving an 800-gram MaP score. For comparison, the EPA WaterSense maximum is 1.28 GPF. At 0.8 GPF on 10 daily flushes, a household saves roughly 1,752 gallons per year compared to a 1.28 GPF WaterSense toilet. Kohler's Numi 2.0 and Veil Intelligent also offer an 0.8 GPF light flush, though their full flush is 1.28 GPF.

? Do smart toilets require special cleaning products?

Smart toilets with TOTO's CeFiONtect glaze or eWater+ should not be cleaned with abrasive cleaners, bleach tablets dropped in the tank, or heavy chemical bowl cleaners, as these can degrade the glaze and the electrolyzed water system. TOTO recommends mild soap and a soft cloth for the exterior and the eWater+ misting as the primary bowl sanitation method. American Standard's EverClean surface is compatible with standard bowl cleaners but the manufacturer recommends avoiding abrasive pads on the ceramic. For bidet nozzle maintenance, most units include a nozzle self-clean cycle accessible from the remote.

? What is a comfort height toilet, and do smart toilets use it?

Comfort height (also called chair height) refers to a toilet bowl height of 17 to 19 inches from the floor to the top of the seat, compared to the standard 15 to 16 inches. The higher seat height mirrors the height of a standard chair, making sitting and standing easier, particularly for tall adults and users with knee or hip issues. All of the smart toilet picks listed here, from TOTO Neorest models to Woodbridge and Kohler units, use comfort-height elongated bowls as the standard configuration for the category.

? Is Woodbridge a reliable brand for smart toilets?

Woodbridge is a mid-tier brand with a growing track record in the one-piece skirted toilet segment, where models like the T-0001 have accumulated a large number of positive verified reviews over several years. Their smart toilet line (B-series) is newer, and the electronics record is less established than TOTO or Kohler's decades-long washlet history. Aggregated owner reviews suggest the flush and bidet seat quality is generally solid for the price tier, but parts sourcing outside the warranty period is less convenient than with major brands. For low-to-medium-use applications, Woodbridge represents a reasonable value; for primary bathrooms with heavy daily use, the established brands carry less long-term risk.

? Can smart toilets be used in homes with well water?

Smart toilets can be installed in homes with well water, but hard water mineral buildup is an accelerated concern. Calcium and magnesium deposits can clog the bidet wand nozzle, build up inside the fill valve, and coat the bowl glaze faster than with soft municipal water. TOTO's CeFiONtect glaze and eWater+ misting reduce surface adhesion, which helps, but homes with very hard well water (over 200 ppm hardness) should consider a whole-house water softener before installing any smart toilet to protect the electronics and nozzle components.

? What should I check before buying a smart toilet?

Before purchasing, confirm: (1) the rough-in distance matches your floor drain position (typically 12 inches); (2) a GFCI-protected outlet exists within two to three feet of the toilet, or that you are prepared to have one installed; (3) the MaP score meets the demand of your household size (minimum 600 grams for three or more people); (4) the water-heating method is instant on-demand rather than reservoir if warm wash duration matters; (5) the brand has accessible parts and service support for the electronics warranty period and beyond.

? What is the best smart toilet for a small bathroom?

Smart toilets are typically elongated comfort-height fixtures with a seat assembly larger than a standard toilet lid, so the overall footprint is slightly larger than a comparable standard one-piece. The Swiss Madison Vivante and Woodbridge B-0950S have among the more compact integrated profiles in the category. For very small bathrooms, the route of a compact standard toilet with a bidet seat upgrade is more space-efficient, as round-bowl compact toilets with an electronic seat can be configured to a significantly shorter front-to-back dimension. See our guide to the best toilets for home for compact options.

Sources

  • EPA WaterSense, epa.gov/watersense
  • MaP (Maximum Performance) flush testing, map-testing.com
  • Manufacturer published specifications (TOTO, Kohler, American Standard, Woodbridge, Swiss Madison)
  • National Electrical Code (NEC) 210.8 bathroom GFCI requirements
  • TOTO USA product documentation, totousa.com
  • Kohler product specifications and Konnect documentation, us.kohler.com

Our Verdict

The TOTO Neorest NX2 is the best smart toilet in 2026 by every metric that matters: it reaches an 800-gram MaP flush score on just 0.8 GPF, pairs it with a UV Actilight self-cleaning bowl and eWater+ wand sanitation, and adds a full auto-open lid, auto flush, instant-heated bidet wash and warm-air dryer in a fixture backed by TOTO's decades-long reliability record. The Kohler Numi 2.0 is the pick for buyers who prioritize Alexa integration and a longer 3-year warranty. The Woodbridge B-0950S is the best value integrated smart toilet for buyers who want the category experience without the luxury price. And the TOTO Drake II paired with the Washlet S7A remains the most serviceability-conscious smart setup for buyers who want TOTO's proven 800-gram flush and the flexibility to upgrade each component independently. For the full picture of which standard toilets flush best without smart features, explore our guide to the best flushing toilets, or see the broader best toilets of 2026 ranking for a complete comparison across types.

H
Researched by Home Fixtures Editor

Home Fixtures Editor. Compares toilet specs, MaP flush-test scores, certifications and aggregated owner reviews. We do not physically test units in a lab.

Updated April 2026 · Toilets
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