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Independent rankings, no fluff

Best American Standard Toilets of 2026: Full Rankings

American Standard holds one of the best records in the industry for raw flushing power at a mainstream price. We ranked the top American Standard toilets of 2026 using independent MaP flush-test scores, EPA WaterSense certification data, flush-valve and trapway engineering, and the recurring patterns across aggregated owner reviews from major retailers.

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 best American Standard toilet overall is the Champion 4, which earns a perfect 1000 g MaP score thanks to its four-inch flush valve and 2-3/8-inch fully glazed trapway -- the widest combination in mainstream gravity toilets. For EPA WaterSense efficiency at 1.28 GPF, the Cadet 3 FloWise matches that 1000 g score for less.

American Standard has manufactured plumbing fixtures in the United States for more than 130 years, and its toilets appear in more residential and commercial buildings than almost any other brand. Unlike TOTO, which competes on glaze technology and Japanese engineering precision, or Kohler, which leans on design and styling, American Standard builds its reputation on a simple promise: clear the bowl on the first flush, every time.

The Champion 4 cemented that promise by introducing the widest flush valve and one of the largest trapways in the gravity-flush segment. Plumbers recommend it partly because of those specs and partly because it reduces callback visits -- fewer clogs mean fewer calls. The Cadet 3 line extended that philosophy to WaterSense-certified 1.28 GPF models, and the VorMax system added a completely new rim design that eliminates the under-rim jets where most toilets accumulate biofilm.

Every pick in this ranking had to prove it clears at least 800 grams in MaP testing. Most score at the 1000 gram ceiling. We ranked by flush power first, then water efficiency, then owner-reported reliability and value. If you want the full cross-brand picture, our pillar guide to the best flushing toilets covers TOTO, Kohler, Woodbridge, Gerber and others side by side.

Side by side

Best American Standard toilets of 2026 compared

Eight models ranked by flush performance. MaP is the single-flush waste-clearing score in grams (max 1000). GPF = gallons per flush. WS = EPA WaterSense certified.

Model Best For MaP (g) GPF Flush Valve WaterSense Bowl
Champion 4 Never-clog power 1000 1.6 4-inch No Elongated
Cadet 3 FloWise Best value + WaterSense 1000 1.28 3-inch Yes Elongated/Round
VorMax Plus Clean bowl technology 1000 1.28 3-inch Yes Elongated
H2Option Dual Flush Dual-flush water savings 1000 1.0 / 1.6 3-inch Yes Elongated
Right Height Elongated Comfort height ADA 800 1.28 3-inch Yes Elongated
Champion 4 Max Max power, WaterSense 1000 1.28 4-inch Yes Elongated
Ravenna 3 One-piece design 800 1.28 3-inch Yes Elongated
ActiClean Self-cleaning bowl 1000 1.28 3-inch Yes Elongated

Is the American Standard Champion 4 still the best flushing toilet in the brand's lineup in 2026?

Yes. The Champion 4's four-inch flush valve is still the widest on any mainstream gravity toilet in 2026, and it earns a published 1000 gram MaP score -- the maximum. No other American Standard model moves more water faster in a single flush. The trade-off is that it uses 1.6 GPF rather than the 1.28 GPF WaterSense threshold; if efficiency matters, the Champion 4 Max delivers the same four-inch valve at 1.28 GPF with a WaterSense certification.

#1
Best Overall

American Standard Champion 4 Two-Piece Elongated Toilet

4.7 Best for: Households that need maximum flush power and hate repeat clogs

No mainstream gravity toilet has a wider flush valve than the Champion 4, and that single engineering decision is why it cleared a perfect 1000 gram MaP score and earned an industry reputation as a clog eliminator rather than a clog reducer.

MaP Score1000 g
Flush Volume1.6 GPF
Flush Valve4-inch
Trapway2-3/8 inch fully glazed
Bowl Height16.5 inches (standard)
Pros
  • Widest flush valve in the mainstream gravity category
  • Perfect 1000 g MaP score -- clears the most waste in one flush
  • Fully glazed 2-3/8-inch trapway resists buildup over time
  • EverClean antimicrobial surface inhibits bacterial growth
  • PowerWash rim scrubs sides of bowl with every flush
Cons
  • Uses 1.6 GPF, missing WaterSense efficiency certification
  • Standard 16.5-inch bowl height may not suit taller users
  • No EverClean coating on some older stock variants

The Champion 4's four-inch flush valve dumps the entire tank in roughly 1.6 seconds -- substantially faster than the three-inch valves on most competing gravity toilets. Speed matters because the kinetic energy of the water surge is what dislodges solids from the trapway. Paired with the 2-3/8-inch fully glazed trapway, the widest in its class, this toilet has a geometric advantage over everything else at a comparable price point. MaP testing, which uses soybean paste in a measured amount to simulate real loads, confirmed the 1000 gram ceiling -- nothing distinguishes it from passing far more because 1000 g is where the test stops.

Owner reviews across major retailers consistently mention the elimination of double flushing after switching from an older two-inch valve toilet. Plumbers frequently cite it as a go-to recommendation for households on septic systems, older cast-iron drain lines, or any situation where partial clogs are a recurring expense. The one legitimate knock is the 1.6 GPF rating: in states with strict low-flow mandates it may require a waiver or may not be legal to install, and in areas where water costs are high, the Champion 4 Max at 1.28 GPF is the better financial choice long-term.

Expert Take

The four-inch valve is not a marketing claim -- it is a measurable diameter difference that produces a faster, higher-volume surge than any three-inch competitor. For a household that has called a plumber more than twice in a year for a clogged toilet, the Champion 4 nearly always ends that pattern.

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Bottom Line: The Champion 4 is the strongest-flushing gravity toilet American Standard makes, and the widest trapway and flush valve in the mainstream category mean it earns that title on physics, not marketing.
#2
Best Value

American Standard Cadet 3 FloWise Two-Piece Toilet

4.6 Best for: Buyers who want strong flushing with EPA WaterSense efficiency

The Cadet 3 FloWise hits the same 1000 gram MaP ceiling as the Champion 4 while sipping just 1.28 GPF -- making it the most well-rounded American Standard toilet for everyday home use.

MaP Score1000 g
Flush Volume1.28 GPF
Flush Valve3-inch
CertificationEPA WaterSense
Bowl OptionsElongated and Round
Pros
  • 1000 g MaP score with only 1.28 GPF -- the efficiency sweet spot
  • EPA WaterSense certified, legal in all U.S. states
  • Available in elongated and round bowl versions
  • EverClean antimicrobial surface included
  • Widely stocked replacement parts
Cons
  • Three-inch flush valve is not as fast as the Champion 4's four-inch
  • Standard seat included may feel lightweight on some units

The Cadet 3 FloWise is where American Standard found the balance most households actually need. A three-inch flush valve produces a strong enough surge to hit 1000 grams in MaP testing, and the 1.28 GPF rate keeps annual water bills noticeably lower than the Champion 4's 1.6 GPF. Over ten years and an average of five flushes per toilet per day, the difference between 1.28 and 1.6 GPF amounts to roughly 11,000 fewer gallons consumed annually per toilet.

Owner reports from more than a decade of market presence show a notably low clog rate, with most complaints involving the included seat or water connections rather than flushing performance. The Cadet 3 name has been in the American Standard catalog since the mid-2000s, which means replacement parts -- fill valves, flappers, flush towers -- are inexpensive and available at virtually every hardware store. For a rental property, a primary bathroom in a family home, or any installation where value and reliability are the priority, this is the pick. See also our detailed American Standard Cadet 3 review.

Expert Take

When someone asks for a recommendation that covers both flush reliability and water savings, the Cadet 3 FloWise is the model most plumbers reach for first. The combination of 1000 g MaP and 1.28 GPF in a two-piece format with widely stocked parts is hard to beat at this price tier.

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Bottom Line: The Cadet 3 FloWise proves you do not need a four-inch valve to score 1000 grams in MaP testing, and its WaterSense certification makes it legal and practical in every state.

What makes the American Standard VorMax flush system different from a standard rim-flush toilet?

The VorMax eliminates the traditional under-rim jets entirely and replaces them with a single directed nozzle at the back of the bowl, which creates a cyclonic rinse that scrubs the entire bowl surface from top to bottom in one flush. Traditional rim jets lose water force through many small holes and leave areas of the bowl, especially under the rim, where biofilm and mineral deposits accumulate. The VorMax design directs all water through one opening, so cleaning coverage is more complete and the area where bacteria typically hides is eliminated.

#3
Cleanest Bowl

American Standard VorMax Plus One-Piece Toilet

4.5 Best for: Anyone who wants a cleaner bowl with less scrubbing

The VorMax Plus combines the cyclonic single-nozzle rinse that keeps the bowl cleaner between scrubbing sessions with a 1000 g MaP score and 1.28 GPF efficiency -- the most complete package in American Standard's lineup for cleanliness-focused buyers.

MaP Score1000 g
Flush Volume1.28 GPF
Flush SystemVorMax single-nozzle
CertificationEPA WaterSense
StyleOne-piece
Pros
  • VorMax nozzle eliminates under-rim bacteria hiding spots
  • 1000 g MaP score at 1.28 GPF with WaterSense certification
  • One-piece design is easier to clean around the base
  • EverClean surface adds a second layer of antimicrobial protection
Cons
  • Higher cost than equivalent two-piece models
  • One-piece units are heavier and harder to install solo
  • Some users report the VorMax rinse leaves more water spots on dark bowls

American Standard's independent internal testing claims the VorMax system cleans up to two times better than a standard rim-flush design. That claim has limitations -- it depends on the test protocol -- but the fundamental engineering logic is sound: a single high-velocity nozzle at the back of the bowl creates a swirling rinse that reaches the front of the bowl rather than relying on gravity-fed trickle jets distributed under the rim. The result is a bowl that owners across aggregated reviews consistently describe as staying cleaner between weekly scrubbing sessions.

The one-piece construction means no gap between the tank and bowl where mildew can form. The full-length skirted profile on Plus variants also makes mopping around the base straightforward. The trade-off is weight -- one-piece toilets routinely run 20 to 30 pounds heavier than a comparable two-piece, which complicates solo installation. For a primary bathroom where appearance and cleaning ease matter as much as flush power, the VorMax Plus justifies its premium over the Cadet 3. Read more on bowl hygiene in our toilet cleaning guide.

Expert Take

The VorMax is the only American Standard flush system that actively addresses where traditional toilets fail at self-cleaning -- the under-rim cavity. Eliminating that cavity shifts the cleaning burden from weekly scrubbing to occasional maintenance, which most owners notice within the first month.

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Bottom Line: If keeping the bowl clean with less effort matters as much as flush power, the VorMax Plus is the most thoughtfully engineered American Standard model available.
#4
Best Dual Flush

American Standard H2Option Siphonic Dual Flush Toilet

4.4 Best for: Water-conscious households who want dual-flush flexibility

The H2Option solves the real problem with most dual-flush toilets in the U.S.: its 1.0 GPF light flush still relies on a siphonic action rather than the wash-down mechanism common on imported dual-flush models, which means it actually clears liquid waste reliably instead of requiring a second flush.

MaP Score1000 g (full flush)
Light Flush1.0 GPF
Full Flush1.6 GPF
CertificationEPA WaterSense
Flush TypeDual siphonic
Pros
  • Siphonic action on both flush modes -- actually clears waste
  • 1000 g MaP on full flush
  • EPA WaterSense certified
  • EverClean surface standard
  • Genuine water savings for liquid-only flushes
Cons
  • Dual-flush actuator buttons feel less intuitive than a lever for some users
  • Slightly more complex internal mechanism requires careful part matching at replacement

Most dual-flush toilets in the U.S. market use a wash-down flush action on the light mode, which pours water into the bowl without creating a full siphonic drain. The result is a light flush that often leaves residue and forces a second flush that uses more water than a single standard flush would have. American Standard engineered the H2Option to use siphonic action on both flush volumes, which preserves the drain-clearing suction that makes American-style toilets more reliable at clearing waste. The full 1.6 GPF mode scores 1000 grams in MaP testing, which matches the Champion 4.

For a household where multiple members flush frequently, the H2Option can meaningfully reduce annual water consumption versus a single-flush 1.28 GPF toilet, since liquid-only flushes at 1.0 GPF represent a real saving without the reliability penalty. For a deeper look at dual-flush design, see our guide to whether dual-flush toilets are worth it.

Expert Take

The H2Option's siphonic light flush is the detail that separates it from cheaper dual-flush imports. A 1.0 GPF siphonic flush is genuinely useful; a 0.8 GPF wash-down light flush that needs a second pass is not.

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Bottom Line: The H2Option is the most reliable dual-flush toilet in the American Standard lineup because it applies siphonic action to both flush volumes instead of cutting corners on the light mode.

How does the American Standard Champion 4 Max compare to the original Champion 4?

The Champion 4 Max retains the same four-inch flush valve and 2-3/8-inch glazed trapway as the original Champion 4 but reduces flush volume from 1.6 GPF to 1.28 GPF, earning EPA WaterSense certification. Published MaP scores for the Max variant reach 1000 grams on the models tested, matching the original. The practical difference is that the Max is legal for installation in all U.S. states and consumes roughly 20 percent less water per flush over the long term, making it the version most buyers should choose unless they are replacing a specific older Champion 4 tank.

#5
Best WaterSense Power

American Standard Champion 4 Max Two-Piece Toilet

4.5 Best for: Buyers who want the Champion 4 valve at 1.28 GPF

The Champion 4 Max delivers the same four-inch flush valve engineering that made the original a plumber favorite, now at the 1.28 GPF WaterSense threshold -- making it the version most households should buy in 2026.

MaP Score1000 g
Flush Volume1.28 GPF
Flush Valve4-inch
CertificationEPA WaterSense
Trapway2-3/8 inch glazed
Pros
  • Four-inch valve preserved from original Champion 4
  • 1000 g MaP score at the WaterSense 1.28 GPF threshold
  • Legal in all U.S. states including California and other strict markets
  • Wide parts compatibility with original Champion 4
Cons
  • Costs more than the standard Cadet 3 FloWise for similar MaP performance
  • Four-inch valve tank is wider than average, requiring more clearance from side wall

When California tightened flush volume regulations, the original 1.6 GPF Champion 4 was no longer legal for new installations in that state. The Max variant addressed this by re-engineering the tank volume and flush timing to achieve 1.28 GPF while maintaining the four-inch valve diameter. Published MaP scores confirm the 1000 gram result is preserved. The tank's valve design accelerates the flush differently from the original to compensate for the smaller water volume, but the practical outcome -- no double-flushing, no chronic clogs -- is the same.

For a household choosing between the Champion 4 Max and the Cadet 3 FloWise, the primary decision is whether the wider valve is worth the price difference. Both score 1000 grams in MaP testing. The Champion 4 Max flushes faster and with a stronger initial surge; the Cadet 3 is slightly quieter and costs less. For a large family or a home where the toilet sees very high daily use, the Max's mechanical robustness is the tiebreaker.

Expert Take

The Champion 4 Max is what the original Champion 4 should have been from the start -- a four-inch valve at a WaterSense-compliant flow rate. If you want the Champion 4 name and the compliance certificate, this is the correct model to specify.

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Bottom Line: The Champion 4 Max is the upgrade path for Champion 4 owners who need WaterSense compliance, and the better default choice for new buyers in regulated markets.
#6
Best for Seniors

American Standard Right Height Elongated Toilet

4.4 Best for: Seniors, taller users, or anyone with knee or hip discomfort

The Right Height Elongated brings American Standard's comfort-height seat elevation of 16.5 to 17.5 inches to a WaterSense-certified platform, making it the practical choice for households where joint comfort matters as much as flushing performance.

MaP Score800 g
Flush Volume1.28 GPF
Seat Height16.5-17.5 inches
CertificationEPA WaterSense
ADA CompliantYes
Pros
  • Comfort height seat elevation reduces strain on knees and hips
  • ADA compliant for accessible bathrooms
  • EPA WaterSense at 1.28 GPF
  • EverClean antimicrobial surface
  • Available in multiple rough-in options
Cons
  • 800 g MaP score is good but below the 1000 g ceiling of Champion 4 and Cadet 3
  • Higher seat height can be uncomfortable for shorter users or young children

The ADA-recommended seat height of 17 to 19 inches from finished floor reduces the distance a person must lower themselves, which meaningfully reduces pressure on the knee and hip joints. American Standard's Right Height line standardized on 16.5 to 17.5 inches, which is at the lower end of the ADA range but still substantially higher than the 15-inch standard seat height on older toilets. For a senior who struggles to rise from a low seat, the difference between these heights is often described as immediately noticeable.

The flush system uses a three-inch valve with American Standard's EverClean-treated bowl. An 800 gram MaP score is solid -- it handles the practical range of real-world use without double flushing in the overwhelming majority of cases -- but it is below the 1000 g models elsewhere in this ranking. For a household with no chronic clogging history, 800 g is perfectly adequate. For a household replacing a toilet because of chronic clogs, the Cadet 3 FloWise is a better choice even if the height is less ideal. Our guide to toilets for seniors covers this trade-off in detail.

Expert Take

The Right Height is a straightforward ADA-compliant solution for a market that is underserved by most toilet brands. It does not sacrifice flushing adequacy for height, and the 800 g MaP score is comfortably above the threshold where chronic clogs become a daily nuisance.

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Bottom Line: For users who prioritize sit-and-stand comfort and ADA compliance, the Right Height Elongated delivers a practical combination of comfort height and WaterSense efficiency at a reasonable price.
#7
Best One-Piece Design

American Standard Ravenna 3 One-Piece Toilet

4.3 Best for: Modern bathrooms where a seamless profile is a priority

The Ravenna 3 is American Standard's clean-lined one-piece entry: a skirted base, tank-bowl fusion and a no-gap profile that makes mopping around the toilet as fast as cleaning any other piece of furniture.

MaP Score800 g
Flush Volume1.28 GPF
Flush Valve3-inch
StyleOne-piece skirted
CertificationEPA WaterSense
Pros
  • Seamless one-piece construction with no tank-to-bowl gap
  • Skirted base eliminates the trapway cleaning ledge
  • EPA WaterSense at 1.28 GPF
  • Modern visual profile suits contemporary bathrooms
Cons
  • 800 g MaP is lower than the top American Standard performers
  • Heavier and more cumbersome to ship and install than two-piece
  • Skirted trapway can complicate wax ring seating if floor is uneven

One-piece toilets outsell two-piece models in renovation projects specifically because of the visual difference. The Ravenna 3's skirted profile -- smooth sides that run from rim to floor without the exposed S-curve of a traditional two-piece trapway -- photographs well and is easy to clean. The flush system is American Standard's standard three-inch gravity valve at 1.28 GPF, earning WaterSense certification. The 800 gram MaP score is adequate for most household use, though buyers who have had chronic clog problems should weigh the VorMax Plus or Cadet 3 instead.

From a design perspective, the Ravenna 3 competes with Woodbridge's T-0001 and Swiss Madison's St. Tropez at a similar price tier. The American Standard name brings a broader parts network, which means a fill valve or flapper years from now will be easier to find. For bathroom remodel buyers comparing brands, our best one-piece flushing toilets guide puts the Ravenna 3 in a broader cross-brand context.

Expert Take

The Ravenna 3 trades some flushing ceiling for visual design. If your bathroom is the deciding factor and you are not replacing a toilet because of chronic clogs, the trade-off is reasonable -- 800 grams handles normal household waste without issue.

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Bottom Line: The Ravenna 3 is for buyers who want American Standard reliability in a one-piece skirted form factor for a modern bathroom update.
#8
Most Self-Cleaning

American Standard ActiClean Self-Cleaning Toilet

4.2 Best for: People who want to reduce how often they scrub the toilet

The ActiClean is the only American Standard toilet with an integrated bowl-cleaning system: a built-in chamber holds toilet cleaner and releases it on demand, scrubbing the bowl with the flush rather than requiring a separate cleaning product and brush.

MaP Score1000 g
Flush Volume1.28 GPF
Cleaning SystemIntegrated cleaner chamber
CertificationEPA WaterSense
Flush Valve3-inch
Pros
  • Integrated cleaner chamber reduces manual scrubbing frequency
  • 1000 g MaP score at 1.28 GPF
  • EPA WaterSense certified
  • EverClean surface plus active cleaning -- double protection
Cons
  • Requires proprietary ActiClean cartridges -- ongoing consumable cost
  • Mechanism adds complexity that may require servicing over time
  • Cleaning cartridges are a recurring purchase not always found in local stores

The ActiClean's built-in reservoir holds a cleaning cartridge that releases solution into the rim with a push of a dedicated button on the top of the tank -- separate from the flush button -- creating a cleaning cycle that scrubs the bowl surface. American Standard's design positions this as a way to reduce scrubbing to once a month rather than once a week for an average household. The flushing specs are identical to the Cadet 3 FloWise: 1000 g MaP, 1.28 GPF, WaterSense certified.

The main cost consideration is the cartridge. The ActiClean requires American Standard's proprietary cleaning cartridges, which are not a standard cleaning product. Buyers should weigh the convenience of less manual scrubbing against the recurring cost of proprietary consumables, and should verify local availability before committing. For households willing to accept that trade, the ActiClean is the only product in the mainstream market that builds active bowl cleaning into the toilet itself, which is a genuinely different value proposition from the VorMax's passive rim-elimination approach.

Expert Take

The ActiClean is the right pick for buyers who find toilet scrubbing the most unpleasant household chore and want to do it far less often. The proprietary cartridge dependency is real, but for many households the cleaning benefit outweighs the supply chain limitation.

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Bottom Line: The ActiClean offers a genuinely different value proposition -- a toilet that actively cleans its own bowl -- for buyers willing to accept the cartridge dependency.

Does American Standard use EPA WaterSense certification across its toilet lineup?

Most current American Standard toilet models are EPA WaterSense certified at 1.28 GPF, including the Cadet 3 FloWise, VorMax, H2Option, Right Height, Champion 4 Max and ActiClean. The notable exception is the original Champion 4, which flushes at 1.6 GPF and does not carry WaterSense certification. American Standard offers the Champion 4 Max specifically to address this gap, delivering the same four-inch flush valve engineering at the WaterSense-compliant 1.28 GPF flow rate.

How does American Standard compare to TOTO and Kohler in MaP flush testing?

American Standard's Champion 4 and Cadet 3 FloWise both score 1000 grams in MaP testing, matching the TOTO Drake II and TOTO UltraMax II at 1000 grams and exceeding the Kohler Highline's published scores, which typically range from 600 to 800 grams depending on the variant. Where TOTO differentiates is in glaze technology -- its CeFiONtect ceramic coating is more hydrophilic than American Standard's EverClean surface -- and in flushing elegance, with the Tornado flush producing a quieter, more thorough bowl rinse. American Standard's advantage is in the valve and trapway dimensions: the Champion 4's four-inch valve and 2-3/8-inch trapway move more water faster than TOTO's system.

If you are deciding between American Standard and TOTO, the specific comparison is worth reading in detail -- see our TOTO vs American Standard comparison for a model-by-model breakdown. For Kohler, our Kohler vs American Standard guide covers the design, flushing, and value differences.

Expert Take

The three-brand comparison -- TOTO, Kohler, American Standard -- comes down to priorities. TOTO wins on glaze and flushing elegance. American Standard wins on raw trapway engineering and flush valve size at a mainstream price. Kohler wins on design variety and styling breadth. None of these is wrong; they reflect different engineering philosophies. For most households where chronic clogging is the reason for replacing a toilet, American Standard's focus on valve and trapway dimensions is exactly the right engineering priority.

Frequently Asked Questions

What is the American Standard Champion 4's MaP flush score?

The Champion 4 scores 1000 grams in MaP (Maximum Performance) testing -- the maximum score on the scale. MaP testing uses soybean paste to simulate real solid waste and records how many grams a toilet clears in a single flush. A 1000 g score means it reached the test's upper limit.

Is the American Standard Cadet 3 EPA WaterSense certified?

Yes. The Cadet 3 FloWise variant is EPA WaterSense certified at 1.28 GPF. WaterSense requires a toilet to use 1.28 GPF or less AND pass MaP flush testing at a minimum of 350 grams. The Cadet 3 FloWise achieves 1000 grams -- well above the minimum -- at 1.28 GPF.

What is the difference between the American Standard Champion 4 and Champion 4 Max?

The Champion 4 uses 1.6 GPF and is not WaterSense certified. The Champion 4 Max uses the same four-inch flush valve but reduces flow to 1.28 GPF to earn WaterSense certification. Both score 1000 grams in MaP testing. The Max is the better choice for most buyers in 2026, particularly in states with strict low-flow laws.

How big is the American Standard Champion 4 trapway?

The Champion 4 has a 2-3/8-inch fully glazed trapway, which American Standard markets as the widest in a mainstream gravity toilet. The glazing prevents waste from sticking to the trapway surface and narrowing the passage over time. By comparison, many standard gravity toilets use a 2-inch or 2-1/8-inch trapway.

What does American Standard EverClean do?

EverClean is American Standard's antimicrobial surface treatment applied to the bowl and seat. It contains an EPA-registered antimicrobial agent that is bonded into the ceramic surface during firing, inhibiting the growth of bacteria, mold and mildew. It is not a removable coating -- it is part of the vitreous china itself. American Standard backs it with a lifetime warranty against the surface's antimicrobial performance.

What is the VorMax flush system and how does it work?

VorMax replaces the traditional under-rim distribution holes with a single directional nozzle at the rear of the bowl. When the flush triggers, all water exits through this nozzle at high velocity, creating a cyclonic swirl that scrubs the full bowl surface from the back forward. Eliminating the rim holes also eliminates the cavity where biofilm and mineral deposits traditionally accumulate.

Is the American Standard Champion 4 legal in California?

The original Champion 4 at 1.6 GPF is not legal for new installation in California, which mandates 1.28 GPF or lower for residential toilets. The Champion 4 Max at 1.28 GPF is legal in California and all other states. If you are in California, specify the Champion 4 Max model when purchasing.

Does American Standard make a one-piece toilet that flushes well?

Yes. The VorMax Plus is available in a one-piece format and scores 1000 grams in MaP testing at 1.28 GPF. The Ravenna 3 is another one-piece option at 800 grams. The ActiClean is also available in a one-piece format at 1000 grams. One-piece American Standard toilets tend to cost more than equivalent two-piece models but offer easier cleaning around the base.

What rough-in size do American Standard toilets require?

Most American Standard toilet models are designed for a standard 12-inch rough-in, which is the measurement from the finished wall to the center of the floor flange drain. Some models are available in 10-inch and 14-inch rough-in versions. Always measure your existing rough-in before ordering, especially in older homes where 10-inch rough-ins were common.

How does the American Standard H2Option dual flush work?

The H2Option uses two buttons on the tank lid: one releases 1.0 GPF for liquid waste and one releases 1.6 GPF for solid waste. Both modes use a siphonic flush action, which means both create the full draining suction characteristic of American-style toilets -- not the wash-down mechanism used in many imported dual-flush designs. The full-flush mode scores 1000 grams in MaP testing.

What warranty does American Standard offer on its toilets?

American Standard provides a limited lifetime warranty on the vitreous china for the original purchaser. Tank trim parts (fill valve, flush valve, flapper) carry a five-year limited warranty. The EverClean antimicrobial surface protection carries a lifetime warranty on its performance. Warranty claims require proof of purchase and apply to defects in materials and workmanship.

Are American Standard toilet parts easy to find?

Yes, more so than most competitors at a comparable price. American Standard has been manufacturing in the U.S. for over 130 years, and replacement parts including fill valves, flush towers, flappers and seats are stocked at most major hardware chains and available from numerous online suppliers. The Champion 4 line in particular has wide parts availability because it has been in production for many years without major platform changes.

Is American Standard better than Kohler for flushing?

On raw MaP flush scores, American Standard's top models (Champion 4, Cadet 3 FloWise, Champion 4 Max) match or exceed comparable Kohler models. The Champion 4's four-inch valve is wider than anything Kohler offers in a gravity-flush toilet. Kohler has a broader design and styling range, but for buyers whose primary concern is clearing waste in a single flush, American Standard's top models score higher in independent testing.

What is a comfort height toilet and does American Standard make one?

A comfort height toilet, sometimes called chair height, has a seat height of 17 to 19 inches from the finished floor -- roughly the height of a standard chair. American Standard's Right Height line is its comfort height offering, with seat heights in the 16.5 to 17.5-inch range. This height reduces strain on the knees and hips when sitting or rising and meets ADA accessibility guidelines.

Does American Standard ActiClean work with any cleaning cartridge?

No. The ActiClean system requires American Standard's proprietary cleaning cartridges, which are designed specifically for the built-in chamber in the ActiClean tank. Using aftermarket cleaning products not designed for the ActiClean may damage the mechanism or void the warranty. Buyers should confirm local or online availability of the cartridges before purchasing the ActiClean.

How often should an American Standard toilet be replaced?

A well-maintained American Standard toilet can last 25 years or more. The vitreous china bowl and tank do not degrade under normal use. The components most likely to need replacement are the flush valve, fill valve and flapper, typically every 5 to 10 years depending on water quality. Hard water accelerates mineral buildup in valves and can shorten part lifespan. Replacing a toilet is usually warranted when the porcelain cracks, repeated repairs fail to stop leaks, or flushing performance cannot be restored.

What GPF do American Standard toilets use?

Current American Standard models use either 1.28 GPF (WaterSense certified, all current Cadet 3, VorMax, H2Option, Right Height, Champion 4 Max and ActiClean models) or 1.6 GPF (original Champion 4). Some older American Standard models used 1.6 GPF or even 3.5 GPF before federal low-flow standards changed, but all new models sold in 2026 meet at minimum the federal 1.6 GPF standard, and most meet the EPA's 1.28 GPF WaterSense threshold.

Can I install an American Standard toilet myself?

Yes. Most American Standard two-piece toilets are designed for standard DIY installation with basic plumbing tools. The process involves removing the old toilet, setting a new wax ring on the floor flange, lowering the toilet over the flange bolts, securing it, connecting the water supply line and adjusting the fill valve. One-piece toilets are heavier and may benefit from a second person for installation. American Standard publishes installation guides for each model.

Sources

  • EPA WaterSense, epa.gov/watersense
  • MaP flush testing, map-testing.com
  • Manufacturer published specifications
  • American Standard product documentation and warranty terms
  • Aggregated owner reviews from major U.S. retailers

Our Verdict

American Standard builds its best toilets around engineering advantages in flush-valve size and trapway width rather than premium glaze or design. The Champion 4 Max is the model most 2026 buyers should purchase: four-inch valve, 1000 g MaP, 1.28 GPF, WaterSense certified. If the self-cleaning bowl matters more than valve size, the VorMax Plus or ActiClean deliver 1000 g MaP with genuinely different bowl-cleaning technology. For straightforward value, the Cadet 3 FloWise remains one of the best-performing toilets available at its price point regardless of brand, matching the 1000 g ceiling at 1.28 GPF in a platform with inexpensive, widely stocked parts.

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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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