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By simply choosing a tankless toilet, you can save maintenance hours, spruce up your bathroom style, and maximize your floor space. Tankless toilets are the ideal choice for small-sized bathrooms, and some offer even better flush action than regular tank toilets – you just need to know where to look.
In this article, we share our top product choices to help you choose the right model for your needs. We’ve also included a buying guide to move your shopping along – let us know what model you choose!
Favorite Picks
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Editor's ChoiceEditor's ChoiceWe pick our favorite model based on style, function, customer feedback, and cost effectiveness.
Review ChampionReview ChampionWe average reviews from top online sellers, also taking into consideration the number of reviews. We present the model most consumers are pleased with.
It is common knowledge that “tankless toilets do not come with a tank.” But without a tank, how do these toilets work?
Tankless toilets draw in water directly from the toilet’s supply line. Thus, they require the water flow to enter the bowl at a high enough pressure to flush waste properly. As a result, they are often fitted with flushometer valves.
Although most tankless toilets do not use any more water than the tank toilets, they do require larger supply lines to deliver the high pressure needed to flush the waste in a single go.
Take a look at this video to learn more about how flushometer valves help tankless flush toilets.
Comparison of Top Rated Tankless Toilets on the Market
The supply line is basically the brain box of your tankless toilet.
It determines how well other components function. Tankless toilets are usually fitted with supply lines according to the flushometer requirements.
If the water line is not wide enough, it will reduce the water flow and limit flush efficiency. Or, worse case scenario, burst and spill water all over your bathroom floor.
The standard for supply lines in tankless toilets is at least ⅜ or 1-inch wide.
The length of the supply line is also something you should check.
The pressure specification is the water pressure measured at the toilet, not the pressure that enters the building.
Gravity flush tanks can work with water pressures as low as 10-15psi. But, pressure-assist tanks and flushometer toilets often require at least 25-40 psi and a maximum static pressure of 80psi. In rare cases, some toilets use 70psi as their minimum standard.
If the water pressure is lower than the minimum specifications of your flushometer, a pump can be used to raise it. And if it is higher than the maximum standard, a pressure regulator can help.
Water pressures can be measured at home with a pressure or vacuum gauge.
There are two types of flushometers you’d come across if you need to buy a flush valve for your toilet or replace one:
The Piston Valve
The Diaphragm Valve
The difference between these two is their partitions. In the piston valve, a molded cup/piston is set between the upper and lower chambers. While in the diaphragm valve, a rubber diaphragm is used instead.
Diaphragm valves are preferred because they respond faster to pressure changes and work faster, and their high-pressure system helps them fill more quickly than the piston valves. However, they do not work as well on their own in low-pressure environments.
These flush systems can be made into several activation mechanisms. The most common kinds are:
Button-Push
Motion Sensors
Lever
Most activation mechanisms are available in dual-flush models to minimize water use and meet WaterSense standards. The most common types are the dual-flush lever and the dual-flush button-push.
Our experts has chosen the top tankless toilets on the market to review and gather facts.
1. American Standard Madera 3451 – Editor’s Choice
Pro and Cons
Affordable.
4 different models.
EverClean glaze over Vitreous china material.
Siphon jet flush clears waste better.
Its bowl scouring power.
Its package contents.
Feature List
Flush Specs
› Flush System – FlushometerWhat is a Flushometer?3” extra wide flush valve = 80% better water flow than a standard 2” flush valve. Larger 2-1/8” siphon trapway moves a 60% larger waste portion than a standard 2”.
› Water Consumption – 1.1/1.6 GPFGallons Per FlushEfficient toilets use 1.28 gallons per flush, saving 20% more water than 1.6 GPF toilets.
› Type – N/AFlush Type ExplainedA single flush is one press of the lever for a full flush. A dual flush allows the option for a partial or full flush.
› Flush Score – 1000 MaPWhat is MaP?Grams of waste removed in a single flush. Scale = 0 - 1000
Design & Style
› Style – Floor mountedStyle ExplainedTwo-piece toilets has a separate tank and bowl. One-piece toilet has a seamless design of the tank and bowl.
› Bowl Shape – ElongatedShape ExplainedElongated bowls are oval shaped and 2” inches wider than round bowls
› Bowl Glaze – EverClean
› Trapway Style – Exposed
Dimensions
›Toilet Measurements – 28.25″ x 14″ x 15″
› Rough-inWhat is a Rough-in?Measurement between center of waste pipe and wall – 10″ or 12″
› Seat HeightWhat is the Seat Height?The measurement from the floor to the top of the toilet seat. Standard height toilets measure between 15 - 17 inches, while chair height toilets measure 17 inches or more. – 15-3/4″
“The American Standard 3451 is great for the entire family, including children. It flushes and rinses well and is one of the most affordable toilets on our list.”
The American Standard Madera might seem like a regular plain tankless toilet, but it isn’t.
Otherwise called the Madera 3451, this tankless toilet is perfect for tiny homes with small bathrooms, and its stunning visual ascent suits any space.
The Madera EverClean is a floor-mounted, elongated piece made from vitreous china material and coated with the EverClean protective glaze, positioning it for minimal care.
It has a rim height of 15-inches and is about 56.4 pounds heavy. Though not ADA compliant, it is suitable for most persons, including children. The tankless toilet is said to have a carrying capacity of up to 1000 pounds.
Most American Standard tankless toilets are known for their high-pressure system, and the Madera 3451 is no different. It uses a pressure-assisted system that optimizes the 1.1/1.6GPF ratings of manual flushometer valves.
The American Standard Madera is unsuitable for locations with water pressure below 25psi and requires a supply line 1-inch wide to support its high-pressure needs. This tankless toilet is CALGreen, WaterSense, and HET certified.
The Madera comes with a 1.5-inch top inlet spud, a condensation channel for moisture control and two bolt caps. But, it is not packed with a seat or the manual flushometer valve.
It is compatible with the standard 12-inch rough-ins, suitable for most bathrooms’ configurations. Because of its 10 by 12-inch water surface area and 2 ⅛-inch fully glazed trapway, its siphon action is even better.
Still, some customers have reported its bowl scouring power is not as great as expected. However, most customers have posted above satisfactory reviews on this toilet.
Color Choice: White
And since it takes care of most toilet flaws, including purchasing cost, we made it our number one pick on our list.
The Madera 3451 Flowise Toilet is available in four different models:
The 3451001 Elongated Bowl only, Top Spud
The 3452001 Elongated Bowl only, Top Spud with slotted rim for bedpan holding
The 3453001 Elongated Bowl only, Back Spud
The 3455001 Elongated Bowl only, Back Spud with slotted rim for bedpan holding
“Small bathrooms love this toilet because it matches high quality in flush performance, convenience and space efficiency.”
Pro and Cons
Flexible rough-in attachment.
Powerful siphon jet flush system.
Lack of the EverClean protective coating.
The absence of a flushometer and seat.
Feature List
Flush Specs
› Flush System – FlushometerWhat is a Flushometer?3” extra wide flush valve = 80% better water flow than a standard 2” flush valve. Larger 2-1/8” siphon trapway moves a 60% larger waste portion than a standard 2”.
› Water Consumption – 1.1/1.6 GPFGallons Per FlushEfficient toilets use 1.28 gallons per flush, saving 20% more water than 1.6 GPF toilets.
› Type – N/AFlush Type ExplainedA single flush is one press of the lever for a full flush. A dual flush allows the option for a partial or full flush.
› Flush Score – 1000 MaPWhat is MaP?Grams of waste removed in a single flush. Scale = 0 - 1000
Design & Style
› Style – Floor mountedStyle ExplainedTwo-piece toilets has a separate tank and bowl. One-piece toilet has a seamless design of the tank and bowl.
› Bowl Shape – ElongatedShape ExplainedElongated bowls are oval shaped and 2” inches wider than round bowls
› Bowl Glaze – EverClean
› Trapway Style – Exposed
Dimensions
›Toilet Measurements – 28.25″ x 14″ x 15″
› Rough-inWhat is a Rough-in?Measurement between center of waste pipe and wall – 10″ or 12″
› Seat HeightWhat is the Seat Height?The measurement from the floor to the top of the toilet seat. Standard height toilets measure between 15 - 17 inches, while chair height toilets measure 17 inches or more. – 15-3/4″
The 2234 Madera, the 3451 Madera; what’s the difference? But first, we should identify their similarities.
The Madera 2234 is a beautiful-designed, floor-mounted tankless toilet with an elongated bowl. Like the 3451, it is made from vitreous china and has a rim height of 15-inches.
The 2234 toilet uses the pressure-assisted siphonic-jet flush that supports manual flushometer valves of 1.1/1.6 GPF ratings. As a result, it is not only CALGreen and WaterSense-certified, it is also a HET (high-efficiency toilet).
The American Standard 2234 Madera is most suitable for buildings with water pressures of 25 to 80 psi and has a water surface area of 10 by 12-inch to enhance its flush system. It also has a 2 ⅛-inch trapway and a condensation channel for moisture control.
However, the Madera 2234 lacks the proprietary EverClean glaze of the American Standard toilets. It requires a water supply line of 1 inch and is compatible with two rough-in sizes: the 10-inch and the 12-inch due to its adjustable tailpiece.
Color Choice: White
Like the Madera EverClean, the American Standard 2234 Madera toilet comes with a 1.5-inch top inlet spud and two bolt caps – but is not packed with a flushometer valve or a seat.
As expected from the review champion, this tankless toilet has received several five-star ratings on various e-commerce platforms.
The Madera 2234 Toilet is available in three different models:
The 2234.001 Elongated Bowl only, Top Spud
The 2623.001 Elongated Bowl only, Top Spud with slotted rim for bedpan holding (White only)
The 2624.001 Elongated Bowl only, Back Spud
*The model displayed above is the 2234.001 design.
3. Afwall Millennium Flowise – Best For Small Bathrooms
Pro and Cons
Suitable for small-sized bathrooms.
Sturdy mounting allowances.
Its package contents.
Feature List
Flush Specs
› Flush System – FlushometerWhat is a Flushometer?3” extra wide flush valve = 80% better water flow than a standard 2” flush valve. Larger 2-1/8” siphon trapway moves a 60% larger waste portion than a standard 2”.
› Water Consumption – 1.1/1.6 GPFGallons Per FlushEfficient toilets use 1.28 gallons per flush, saving 20% more water than 1.6 GPF toilets.
› Type – N/AFlush Type ExplainedA single flush is one press of the lever for a full flush. A dual flush allows the option for a partial or full flush.
› Flush Score – 1000 MaPWhat is MaP?Grams of waste removed in a single flush. Scale = 0 - 1000
Design & Style
› Style – Wall-mountedStyle ExplainedTwo-piece toilets has a separate tank and bowl. One-piece toilet has a seamless design of the tank and bowl.
› Bowl Shape – ElongatedShape ExplainedElongated bowls are oval shaped and 2” inches wider than round bowls
› Bowl Glaze – EverClean
› Trapway Style – Concealed
Dimensions
›Toilet Measurements – 26″ x 14″ x 15″
› Seat HeightWhat is the Seat Height?The measurement from the floor to the top of the toilet seat. Standard height toilets measure between 15 - 17 inches, while chair height toilets measure 17 inches or more. – Depends on how high it is mounted
“A wall-hung toilet that takes up just enough space to make small bathrooms look bigger.”
You probably already have an earful of floor-mounted tankless toilets, so let’s switch things up a bit with a wall-mounted, elongated piece, which is also a product of the American Standard brand.
Unlike floor-mounted designs, the Afwall Millennium Flowise lets you mount it at whatever height you prefer: high enough for ADA compliance, sufficiently low for natural seating, or halfway between for a blend of comfort.
It is made from vitreous china material and features the EverClean protective coating. With a 15.88 inches height and 50 pounds in weight, setting up this toilet might be more than a one-person job. However, once you overcome this task, it conveniently supports up to 1000 pounds.
The Afwall Flowise toilet has four mounting holes 7 ½ by 9-inch apart; and bolt holes, 9-inch center across and 7.5-inch center vertically.
It uses the pressure-assisted siphonic jet system that works best with manual flushometer valves of 1.1/1.6 GPF ratings. Thus, it makes CALGreen, WaterSense, and HET standards.
This American Standard toilet comes with a 1.5-inch top inlet spud and a condensation channel. It works best in buildings with water pressures between 25 and 80 psi and has a 12-inch rough-in attachment for standard fitting.
Color Choice: White
But since it is not packed with a gasket, a seat, a flushometer valve, or other installation hardware, its not a straight-out-of-the-box installation – unless you have all these ready.
As with all dual flush 1.1/1.6 GPF toilets, the Afwall Millennium Flowise lets you save 31% more water and a possible cost fraction on your water bill than standard 1.6GPF models.
4. American Standard Madera 3461 – Best Quiet Flush Toilet
Pro and Cons
16.5-inch rim height.
Condensation channel.
Quiet flush.
Flexible rough-in fitting.
CALGreen, WaterSense, and HET certifications.
Its package contents.
Feature List
Flush Specs
› Flush System – FlushometerWhat is a Flushometer?3” extra wide flush valve = 80% better water flow than a standard 2” flush valve. Larger 2-1/8” siphon trapway moves a 60% larger waste portion than a standard 2”.
› Water Consumption – 1.1/1.6 GPFGallons Per FlushEfficient toilets use 1.28 gallons per flush, saving 20% more water than 1.6 GPF toilets.
› Type – N/AFlush Type ExplainedA single flush is one press of the lever for a full flush. A dual flush allows the option for a partial or full flush.
› Flush Score – 1000 MaPWhat is MaP?Grams of waste removed in a single flush. Scale = 0 - 1000
Design & Style
› Style – Floor-mountedStyle ExplainedTwo-piece toilets has a separate tank and bowl. One-piece toilet has a seamless design of the tank and bowl.
› Bowl Shape – ElongatedShape ExplainedElongated bowls are oval shaped and 2” inches wider than round bowls
› Bowl Glaze – EverClean
› Trapway Style – Exposed
Dimensions
›Toilet Measurements – 28.25″ x 14″ x 16.5″
› Rough-inWhat is a Rough-in?Measurement between center of waste pipe and wall – 10″ or 12″
› Seat HeightWhat is the Seat Height?The measurement from the floor to the top of the toilet seat. Standard height toilets measure between 15 - 17 inches, while chair height toilets measure 17 inches or more. – 17-1/4″
“Customers say it flushes just as nicely as other powerful pressure-assisted toilets but does the job quietly.”
The American Standard Madera 3461 takes us back to floor-mounted, elongated tankless toilets.
Crafted from vitreous china and glossed with the proprietary EverClean protective glaze, the 3461 is durable and easy to maintain.
This tankless toilet measures 16.5 from its base to its rim for a blend of comfort and weighs 52.99 pounds.
It uses the pressure-assisted flush mechanism to support its manual flushometer valve requirement of 1.1/1.6GPF.
Pressure-assisted systems are known for two things: their power and their noise. But it appears this toilet finds a way around it, as customers report its flush being pretty quiet.
The American Standard Madera 3461 enhances its flush and sanitary quality with its 10 by 12-inch water surface area, a condensation channel, a 2 ⅛-inch fully-glazed trapway, and a 10 to 12-inch rough-in fitting, which fits most bathrooms.
It comes packed with the 1.5-inch top inlet spud for flush valve placement and the installation bolts.
Like most on this list, the Madera 3461 works best in buildings with water pressure levels between 25 and 80psi and makes CALGreen, WaterSense and HET certifications.
Color Choice: White
Still, its such a bummer that the Madera 3461 does not come with a flushometer or a seat. However, many customers still love it, as there are tons of sterling ratings and positive comments on its functionality and design.
So, if this toilet appeals to you and you are on the lookout for a toilet seat to match this bowl, don’t settle.
5. American Standard Madera 2857 – Review Champion
Pro and Cons
Glossed with a protective glaze.
Comfortable rim height of 16.5-inches.
Flexible rough-in attachment.
Flush valve and installation hardware included.
Does not come with a seat.
Requires multiple flushing.
Feature List
Flush Specs
› Flush System – FlushometerWhat is a Flushometer?3” extra wide flush valve = 80% better water flow than a standard 2” flush valve. Larger 2-1/8” siphon trapway moves a 60% larger waste portion than a standard 2”.
› Water Consumption – 1.1/1.6 GPFGallons Per FlushEfficient toilets use 1.28 gallons per flush, saving 20% more water than 1.6 GPF toilets.
› Type – N/aFlush Type ExplainedA single flush is one press of the lever for a full flush. A dual flush allows the option for a partial or full flush.
› Flush Score – 1000 MaPWhat is MaP?Grams of waste removed in a single flush. Scale = 0 - 1000
Design & Style
› Style – Floor-mountedStyle ExplainedTwo-piece toilets has a separate tank and bowl. One-piece toilet has a seamless design of the tank and bowl.
› Bowl Shape – ElongatedShape ExplainedElongated bowls are oval shaped and 2” inches wider than round bowls
› Bowl Glaze – N/A
› Trapway Style – Exposed
Dimensions
›Toilet Measurements – 28.25″ x 14″ x 16.5″
› Rough-inWhat is a Rough-in?Measurement between center of waste pipe and wall – 10″ or 12″
› Trapway SizeWhat is a Trapway?S-shaped curved channel inside the base of the toilet. Waste travels from the bowl through the trapway, then out the bottom of the toilet. – 2-1/8″
› Seat HeightWhat is the Seat Height?The measurement from the floor to the top of the toilet seat. Standard height toilets measure between 15 - 17 inches, while chair height toilets measure 17 inches or more. – 17-1/4″
Some reviews dub this piece “the toilet that can stand the test of time.” So let’s see if it indeed has what it takes.
Like our other best tankless toilets, the Madera 2857 is a floor-mounted, elongated tankless toilet with a minimalist design to suit any bathroom.
It is made from vitreous china material and uses the trio-set-up: pressure-assisted flush, manual flushometer valve and dual-flush system of 1.1/1.6 GPF.
This Madera tankless toilet is coated with a protective glaze, making it more low maintenance. And unlike the others, it has a rim height of 16.5-inch, 0.5 inches shorter than ADA minimum standards.
As a result, it is more accommodating for more individuals, including persons in wheelchairs.
Similar to the 3451 and 2234, the Madera 2857 is CALGreen, WaterSense, and HET certified. It has a water surface area of 10 by 12-inch and a 2 ⅛-inch fully-glazed trapway for excellent flush performance.
It also has a condensation channel for moisture control and comes with a 1.5-inch top inlet spud.
Because of its high-pressure system, this tankless toilet works best in buildings with water pressure between 25 and 80psi and requires a broad water line to deliver this need. The Madera 2857 has a flexible attachment that accommodates 10 to 12-inch rough-in sizes.
Most customers love this tankless toilet because it comes with a manual flushometer valve, two bolt caps, and other installation hardware.
Color Choice: White
However, it is on the long list of modern toilets that do not come with a seat. If you enjoy customizing your space, this is a time to hone your creativity.
Finally, you should know: Some customers claim the flush system does not work as expected. While others say, it works just fine. An installation issue? Maybe.
› Flush System –FlushometerWhat is a Flushometer?3” extra wide flush valve = 80% better water flow than a standard 2” flush valve. Larger 2-1/8” siphon trapway moves a 60% larger waste portion than a standard 2”.
› Water Consumption – 1.1/1.6 GPFGallons Per FlushEfficient toilets use 1.28 gallons per flush, saving 20% more water than 1.6 GPF toilets.
› Type – N/AFlush Type ExplainedA single flush is one press of the lever for a full flush. A dual flush allows the option for a partial or full flush.
› Flush Score – 1000 MaPWhat is MaP?Grams of waste removed in a single flush. Scale = 0 - 1000
Design & Style
› Style – Floor-mountedStyle ExplainedTwo-piece toilets has a separate tank and bowl. One-piece toilet has a seamless design of the tank and bowl.
› Bowl Shape – ElongatedShape ExplainedElongated bowls are oval shaped and 2” inches wider than round bowls
› Bowl Glaze – N/A
› Trapway Style – Exposed
Dimensions
›Toilet Measurements – 28.25″ x 14″ x 15″
› Rough-inWhat is a Rough-in?Measurement between center of waste pipe and wall – 10″ or 12″
› Trapway SizeWhat is a Trapway?S-shaped curved channel inside the base of the toilet. Waste travels from the bowl through the trapway, then out the bottom of the toilet. – 2-1/8″
› Seat HeightWhat is the Seat Height?The measurement from the floor to the top of the toilet seat. Standard height toilets measure between 15 - 17 inches, while chair height toilets measure 17 inches or more. – 15-3/4″
This tankless toilet claims to outshine its predecessors in efficiency, water use and comfort. But we’d have to check out its features to verify its claim.
Like our other best tankless toilets, the Madera 2858 is a floor-mounted, elongated piece. Elongated toilets are known for their comfort, so that’s a plus. It is made from the easy-clean, low-maintenance vitreous china material.
With a rim height of about 15-inches from the floor, this tankless toilet is comfortable for most children but lacks ADA compliance. While its pressure-assisted flush system supports its dual-flush manual flushometer valve so that it makes WaterSense, CALGreen, and HET certifications.
As a pressure-assisted system, the Madera 2858 toilet relies largely on water pressure. Thus, it needs a 1-inch wide supply line, has a 10 by 12-inch water surface area and features a fully glazed 2 ⅛-inch trapway. Since its maximum pressure allowance is 80psi, you should buy a pressure regulator if your home pressure exceeds 80 PSI.
The Madera 2858 comes with a 1.5-inch top inlet spud, a manual flushometer valve and two bolts, but not a seat. It features a condensation channel for moisture control and chloramine-resistant EPDM seals for extra leak-proof performance.
Color Choice: White
Because this tankless toilet is compatible with 10 or 12-inch rough-ins, it pretty much fits all standard bathrooms’ configurations. It also suits all standard elongated toilet seats and allows customers to explore the different models on the market.
Several customers have shared impressive reviews on this toilet. But there are a few mentions of multiple flushes required after use.
› Water Consumption – 1.0/1.28/1.6 GPFGallons Per FlushEfficient toilets use 1.28 gallons per flush, saving 20% more water than 1.6 GPF toilets.
› Type – N/AFlush Type ExplainedA single flush is one press of the lever for a full flush. A dual flush allows the option for a partial or full flush.
› Flush Score – 1000 MaPWhat is MaP?Grams of waste removed in a single flush. Scale = 0 - 1000
Design & Style
› Style – Floor-mountedStyle ExplainedTwo-piece toilets has a separate tank and bowl. One-piece toilet has a seamless design of the tank and bowl.
› Bowl Shape – ElongatedShape ExplainedElongated bowls are oval shaped and 2” inches wider than round bowls
› Bowl Glaze – CEFIONTECT
› Trapway Style – Exposed
Dimensions
›Toilet Measurements – 28.12″ x 14.37″ x 16.5″
› Rough-inWhat is a Rough-in?Measurement between center of waste pipe and wall – 10″ or 12″
› Trapway SizeWhat is a Trapway?S-shaped curved channel inside the base of the toilet. Waste travels from the bowl through the trapway, then out the bottom of the toilet. – 2-3/8″
› Seat HeightWhat is the Seat Height?The measurement from the floor to the top of the toilet seat. Standard height toilets measure between 15 - 17 inches, while chair height toilets measure 17 inches or more. – 16″
The American Standard is pretty impressive with its tankless toilet pieces, but it isn’t the only brand making waves. TOTO is another industry leader in green technology, and the TOTO CT705UNG is one of its best tankless toilets.
Modern themes are the new fad, and if you need trendy and simple, the TOTO CT705UNG toilet might fit your style. This tankless toilet is made from cotton-finished vitreous china and has the brand’s proprietary CeFiONtecT/SanaGloss glaze.
If, for some reason, you’d rather have the toilet without the glaze, it is also available in the non-glazed design: the CT705UN commercial floor-mounted toilet.
These models measure 15-inches from the base to their rim and use a pressure-assisted system designed to support whatever eco-flush valves they are fitted with. Due to its broad compatibility, you can transform your toilet into a dual-flush system of either 1.6/1.1GPF or one of 1.28/1.0GPF.
As a result, the tankless toilet is both HET and WaterSense certified. Surprisingly, several customers compliment its relatively quiet flush, an essential factor of compact toilets for tiny homes. And to enhance its flush system, it has a 10 ¾ by 9 ¼-inches water surface area.
Color Choice: Cotton white
The TOTO CT705UNG is about 50 pounds heavy, and because it is compatible with rough-in sizes from 10 to 12-inches, it is suitable for standard and small-sized bathrooms. However, it has a smaller-sized trapway of 1.875, which is most likely the reason for its even higher minimum pressure need of 35psi.
Like most on this list, the TOTO CT705UNG is packed with only the 1.5-inch top inlet spud and bolt caps. The seat and desired flush valve will require separate purchases. You might also have to upgrade the wax ring to a higher-quality type for better leak-free performance.
Not packaged for straight-out-of-the-box installation.
Feature List
Flush Specs
› Flush System –FlushometerWhat is a Flushometer?3” extra wide flush valve = 80% better water flow than a standard 2” flush valve. Larger 2-1/8” siphon trapway moves a 60% larger waste portion than a standard 2”.
› Water Consumption – 1.1 – 1.6 GPFGallons Per FlushEfficient toilets use 1.28 gallons per flush, saving 20% more water than 1.6 GPF toilets.
› Type – N/AFlush Type ExplainedA single flush is one press of the lever for a full flush. A dual flush allows the option for a partial or full flush.
› Flush Score – 1000 MaPWhat is MaP?Grams of waste removed in a single flush. Scale = 0 - 1000
Design & Style
› Style – Floor-mountedStyle ExplainedTwo-piece toilets has a separate tank and bowl. One-piece toilet has a seamless design of the tank and bowl.
› Bowl Shape – ElongatedShape ExplainedElongated bowls are oval shaped and 2” inches wider than round bowls
› Bowl Glaze – N/A
› Trapway Style – Exposed
Dimensions
›Toilet Measurements – 26-3/4″ x 14″ x 15″
› Rough-inWhat is a Rough-in?Measurement between center of waste pipe and wall – 10″ or 12″
› Trapway SizeWhat is a Trapway?S-shaped curved channel inside the base of the toilet. Waste travels from the bowl through the trapway, then out the bottom of the toilet. – 2-1/8″
› Seat HeightWhat is the Seat Height?The measurement from the floor to the top of the toilet seat. Standard height toilets measure between 15 - 17 inches, while chair height toilets measure 17 inches or more. – 16″
The Sloan 2102009 toilet also lets its customers use not just one but several flushometer valve types. You are not limited to the manual flush valves with this tankless toilet.
Fun fact:
History says that the flushometer is a creation of the Sloan brand, invented by William Elvis Sloan.
The Sloan 2102009 is a floor-mounted, elongated bowl that measures about 27 ¾-inch front-to-wall toilet and has a rim height of 15-inches. It weighs about 46.9 pounds, which makes it relatively easy to install and re-adjust.
Please note: Some specifications on e-commerce stores denote a 25-inch front-to-wall measurement, but the length indicated in this description is verified from several customer feedbacks for accuracy.
Because this tankless toilet is compatible with most flush valves, you can combine its pressure-assisted flush system with a dual-flush valve of 1.6/1.1GPF or 1.28/1.0GPF.
This Sloan toilet is made from vitreous china material and is fitted with a 2 ⅛-inch fully glazed trapway for excellent flush performance. It features a water surface area of 10.12 by 9.37-inch and comes with a 1.5-inch top inlet spud but not a seat or flush valve.
Color Choice: White
The Sloan 2102009 toilet makes WaterSense and HET standards and works best in buildings with water pressure levels between 25psi and 80psi. It offers flexibility with rough-in sizes as it is compatible with 10 and 12-inch lengths.
Although its lack of a seat means extra cost, you can get some of the best quality seats, guaranteed to last you for years, with the right guide and at the best price.
› Flush System –FlushometerWhat is a Flushometer?3” extra wide flush valve = 80% better water flow than a standard 2” flush valve. Larger 2-1/8” siphon trapway moves a 60% larger waste portion than a standard 2”.
› Water Consumption – Dependent on the paired flush valve
› Type – N/AFlush Type ExplainedA single flush is one press of the lever for a full flush. A dual flush allows the option for a partial or full flush.
› Flush Score – 1000 MaPWhat is MaP?Grams of waste removed in a single flush. Scale = 0 - 1000
Design & Style
› Style – Floor-mountedStyle ExplainedTwo-piece toilets has a separate tank and bowl. One-piece toilet has a seamless design of the tank and bowl.
› Bowl Shape – ElongatedShape ExplainedElongated bowls are oval shaped and 2” inches wider than round bowls
› Bowl Glaze – N/A
› Trapway Style – Exposed
Dimensions
›Toilet Measurements – 26.37″ x 15″ x 15.18″
› Rough-inWhat is a Rough-in?Measurement between center of waste pipe and wall – 10″ or 12″
› Trapway SizeWhat is a Trapway?S-shaped curved channel inside the base of the toilet. Waste travels from the bowl through the trapway, then out the bottom of the toilet. – 2-1/8″
› Seat HeightWhat is the Seat Height?The measurement from the floor to the top of the toilet seat. Standard height toilets measure between 15 - 17 inches, while chair height toilets measure 17 inches or more. – 16″
We certainly cannot end this review without including a Kohler tankless toilet. The Kohler brand is renowned in the industry for its all-faceted top-quality. So, from its many designs, we have made the Kohler Wellcomme Ultra our best Kohler tankless toilet.
The Wellcomme Ultra is a line of flushometer valve toilets invented by the Kohler brand to replace their Wellcomme and Wellworth flushometer categories.
Although it has the same elongated, floor-mounted design with vitreous china of most tankless toilets, the Kohler Wellcomme Ultra uses the antimicrobial finish Kohler K96053-SS and features the multi-versatile pressure-assisted flush. It has been tested and certified as a HET to this effect.
The Wellcomme Ultra toilet is about 15.18 inches tall and weighs around 48.7 pounds, which means less trouble setting it up. It also has a 10-inch rough-in fitting to ensure it doesn’t take up any more floor space than it already has.
After reviewing the TOTO 35psi minimum pressure requirement, we can be thankful for this toilet’s now-relatively low pressure and flow rating of 25psi and 19gpm. It has a 2 ⅛-inch trapway and a 10 by 7-inch wide water surface to further enhance its flush performance.
Color Choices: White, Biscuit, Black Black
The Wellcomme Ultra toilet is packed with a 1.5-inch top inlet spud and the bolt cap accessory pack but lets customers fit in their favorite elongated-front toilet seats and flushometer valves.
Tired of the standard white-colored toilets? The Kohler Wellcomme Ultra is available in three other hues: biscuit, almond, and black.
Buying a tankless toilet for the first time can be tricky. There are various things to consider, and without previous experience, you could easily make a purchasing mistake. Let’s see what details you need to pay to be aware of before buying a tankless model.
Physical Measurements
When buying a tankless toilet, there are two main dimensions to consider – length and height. The length of a toilet seat is usually around 16 inches, which most industry standards consider optimal.
However, if the toilet is elongated, you should look for the model that has an 18-inch-long seat because these are typically more comfortable though slightly more expensive.
When it comes to height, comfortable units usually have at least 17 inches from the floor to the rim. These are great for elders or those with back issues.
Standard units are slightly shorter at 15-16 inches in height. You also should check if the given dimensions are with or without its seat.
You don’t want to buy a toilet that seems tall and realize later that you need a seat riser, which could include additional cost and installation time.
Mounting Position
Tankless toilets usually come in two versions. They can either have a cistern behind the wall or a compressed tank. Depending on your bathroom, you can mount any version on either the wall or the floor.
Wall-mounted units make the bathroom seem larger, but they require reinforcement with brackets.
Floor-mounted toilets can also create issues like collecting dirt between the commode and the wall that you can’t reach. Also, some toilets have exposed plumbing, which can ruin the overall bathroom aesthetic you are trying to achieve.
Disturbance Levels
A toilet flushing mechanism can affect you in many ways. It impacts water usage, how many times you need to flush, and noise levels. If it’s too loud, it can wake you up during the night or scare young children learning how to use it.
You can also search for a unit with a SoftClose seat. These prevent accidental slamming and directly improves the lifespan of the seat and rim of the toilet.
Flushing Power
Many tankless toilets have a tank but are slightly modified to appear without one. These are usually behind a wall, but some toilets also use macerator pumps. Depending on its tank style, your toilet may use more or less water for flushing, which means improved efficiency, but potentially lower flushing power.
If the inlet is wide, it will let more water pass through, which means flushing at a higher speed. You may want to consider toilets that also have pressurized rims for increased power. There are special marks on these types of commodes to let you know their GPF rating. For example, if it has Gmax, it means 1.6 GPF, no matter the model.
Advanced Features
In most cases, the more money you spend, the more additional features you will get. For example, toilets with auto-flush and remote control usually cost more. If you want a night light, heated seat, or an automatic open/close lid, you will have to pay even more. On the other hand, these features are essential if you have young kids or the elderly in your family.
Maintenance
Among all types of toilets, tankless units are usually the easiest to maintain. Depending on the shape, they are more accessible for cleaning. Some commodes also come with SanaGloss or EverClean surfaces, which prevent sticking and less cleaning overall.
Benefits of Tankless Toilets
They are less likely to clog or need multiple flushes because of their high-pressure system.
They take up less floor space than conventional toilets.
Their unique design makes them perfect complements for most bathrooms.
They refill faster than toilets with tanks because their supply lines are directly connected.
Frequently Asked Questions
How Much Pressure a Tankless Toilet Needs to Work?
Most tankless toilets require at least 20 PSI of pressure to work. Also, the maximum pressure for most units is around 80-85 PSI.
Our Opinion
As you can see, buying a tankless toilet can be an excellent long-term investment. These are beautiful, easy to use, and very simple to clean but do cost a bit more. If you can invest a bit more cash for your bathroom, buying a tankless toilet will make an excellent choice.
