Top Rated One Piece Elongated Toilet

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Owing to the increasing interest in environmental-friendly and sustainable bathroom lifestyle, one-piece toilets are growing in popularity. Moreover, most homeowners love the sleek and modern appearance of one-piece toilets because they highly compliment the modern bathroom design and décor as a whole.

Unlike the two-piece toilets that come with a separate tank and bowl, the one-piece on the other hand come with solid construction with one-piece housing both the tank, bowl, seat and base. This makes it easier to clean since it does not have the crannies and nooks featured in two-piece toilets. As such, it has become a darling for most homeowners.

So, are you looking for the top rated one piece elongated toilet to install in your bathroom or replace it with your current two-piece toilet? Well, you have come to the right place. We understand how challenging it can be to choose a top rated one piece elongated toilet from the several one-piece toilet designs flooded on the market. Read on to learn more.

10 Top Rated One Piece Elongated Toilets

ProductShapeMaterial Water ConsumptionDimensions
Kohler 3810-0 Santa Rosa Comfort HeightElongatedVitreous China1.28 Gpf31 x 20.75 x 29 inches
KOHLER Veil One-Piece Skirted ToiletElongatedVitreous China 0.8/1.28 Gpf29 x 15.25 x 26.5 inches
American Standard 2034314.222 Champion 4 Right Height One-Piece Elongated ToiletElongatedVitreous China1.6Gpf17.75 x 29.75 x 29.5 inches
Kohler 3810-NY Santa Rosa Comfort HeightElongatedVitreous China1.28Gpf31 x 20.75 x 29 inches
Swiss Madison SM-1T257 Sublime II Compact 24" Length One Piece ToiletElongatedPorcelain0.8/1.28 Gpf24 x 13.75 x 28.5 inches
Dometic 302651001 White 510 Plus China ToiletElongatedVitreous China0.5l26.3 x 20.87 x 25.16 inches
Saniflo 023 Sanicompact Self-Contained ToiletElongated Porcelain1/1.28Gpf18.25 x 14.5 x 15.75 inches
Swiss Madison Well Made Forever SM-1T254 StElongatedCeramic0.8/1.28Gpf26.6 x 15 x 31 inches
WOODBRIDGE B0941 Cotton toiletElongatedPorcelain1.28Gpf31 x 18 x 28 inches
American Standard 2548A100.020 Studio S Right HeightElongated Vitreous China1.0 Gpf29.5 x 15.88 x 16.75 inches

Kohler 3810-0 Santa Rosa Comfort Height – Top Pick

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The Kohler 3810-0 Santa Rosa Comfort Height is a one-piece toilet that features an integrated tank and bowl. With this design, the toilet offers not only seamless and easy cleaning but also takes up the smallest space in your bathroom. The white color finish makes it seamlessly fit into any bathroom

design or décor.

The compact elongated bowl design on this one-piece toilet offers an added comfort for any user. Moreover, it allows the toilet to occupy the same space as a rounded from bowl toilet can take. The chair-height seating makes sitting down and standing up easier for most adults and the elderly.

The toilet is equipped with a single flush gravity which uses the force of gravity and the precision-engineered tank, bowl and trapway to create a powerful siphon during flushing. Besides, the AquaPiston canister allows water to flow into the bowl from all sides thus increasing not only the power of the flush but also its effectiveness.

It comes with a durable canister with 90 percent less exposure seal material compared to a 3-inch flapper for leak-free performance. And with the toilet allowing 1.28 gallons per flush, you will greatly save on water bills. Better still, the toilet comes affordably hence one of the top rated one piece elongated toilets you can find in the market

Key Features

  • Compact elongated bowl
  • Comfort chair-height seat
  • Single flush gravity
  • Brevia quiet close seat
  • AquaPiston Canister flush valve
  • 1.28 Gallons per flush


  • Uses 1.28gpf thus economical with overall water usage
  • Simple and straightforward installation process
  • AquaPiston flush valve delivers powerful flush


  • Lid does not close softly

Kohler Veil One-Piece Skirted Toilet – Runners Up

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The Kohler Veil is a one-piece toilet with an elongated bowl design that is designed to offer the best performance in your bathroom. With its which colour, it will stand out among your bathroom décor. It is fitted with a left-hand polished chrome trip level that easily turns for hassle-free flushing.

The integrated tank and bowl design makes cleaning seamless. The toilet features a fully skirted trapway that makes overall cleaning of the exterior easy. It comes with an elongate bowl design that is comfortable for any user as it is roomy. Moreover, the chair-height seat enables any user to sit down and stand up with ease.

The dual flush system offers the choice of 0.8 or 1.28 gallons per flush. The lower 0.8gpf setting is designed for flushing liquid waste while the 1.28gpf is for flushing down solid waste. Even with this less amount of water usage per flush, the power of the flush is not compromised at all. Moreover, the fully-glazed trapway ensures that you experience as few clogs as possible.

The soft slow close seat allows for a no-slam quiet close experience. With the vitreous china material construction, you will have a durable and reliable one-piece toilet in your bathroom for many years of service.

Key Features

  • Elongated bowl and seat
  • Dual flush 0.8 or 1.28gpf
  • Polished chrome trip lever
  • Fully-glazed trapway
  • Slow close seat


  • High-efficiency dual flush system for water economy
  • One-piece toilet with skirted trapway for easy cleaning
  • Fully-glazed trapway for fewer clogs and efficient flushing of large solid waste


  • A bit heavier

American Standard 2034314-222 Champion 4 – Best Clog-free Performance

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The American Standard 2034314-222 is a champion for clog-free performance. With the 4-inch piston action accelerator flush valve, you can be sure of a more powerful flushing action that is capable of flushing down more than 70% large mass solid waste than a standard toilet. The siphon action jetted bowl produces an even faster and powerful flushing effect that leaves the bowl clean.

This right height toilet comes with a 16-1/2-inch rim height that ensures ease of use and comfort for any person regardless of their height. Besides, the bowl and seat feature an elongated design for extra comfort and stability during use.

This modern one-piece toilet design is made from vitreous china material that makes it a durable and reliable toilet. The EverClean surface is easy to clean and stay cleaner for longer. With the slow close toilet seat, you will be able to prevent the seat from slamming for a quieter and more peaceful toilet visit.

This is a low water consumption toilet that utilizes 1.6 gallons per flush to help you save on water. For this reason, this model is WaterSense certified as well as certified to be frustration-free. With a limited 10-year warranty you can be sure to get the most out of this top rated one piece elongated toilet.

Key Features

  • Low water consumption of 1.6gpf
  • EverClean surface
  • Elongated seat right height
  • Slow closing height
  • Siphon action jetted bowl


  • EverClean surface for easy cleaning while keeping the toile cleaner for longer
  • Low water consumption saves you on water bills
  • Elongated right height bowl for comfortable use
  • Vitreous china material ensures longevity with 10 years limited warranty


  • The delivery kit does not include a seat
  • It is heavy

Kohler 3810-47 Santa Rosa Comfort Height – Best Low Tank Profile

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Like the other Santa Rosa Comfort Height one-piece toilets from Kohler, the 3810-47 model also comes with an integrated tank and bowl design to offer not only to make it compact and take the smallest space but also seamless to clean.

It has a compact elongated bowl design that offers exceptional functionality but in a small footprint. As such, you can revamp even your smallest bathroom into a well-designed, comfortable, usable space. Moreover, it features a space-saving lower profile that fits nicely under your bathroom countertops to help make your bathroom even more spacious minus trading off functionality.

It is fitted with AquaPiston Canister flush valve that delivers a powerful flushing performance. However, it uses just 1.28 g It has a fully-glazed trapway to help with smooth and reliable flushing. As such, this top-rated one piece elongated toilet meets the strict flushing performance guidelines established by EPA’s WaterSense program.

The toilet is made from vitreous china material that ensures durability and reliability. It comes in different colours including biscuit, almond, cashmere, ice grey, innocent blush, sandbar, white and Mexican sand. That way, you can choose the colour that best blends with your bathroom décor.

Key Features

  • Compact elongated bowl
  • AquaPiston Canister
  • Comfort chair-height
  • Vitreous China
  • 1.28Gpf high-efficiency


  • Seamless tank and bowl design for easy cleaning
  • Meets WaterSense guidelines thus economic on the water with 1.6 gallons per flush
  • Chair-height elongated seat for comfortable use


  • Easily clogs up

Swiss Madison SM-1T257 Sublime II – Best Stylish Low Height

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The Swiss Madison SM-1T257 Sublime II is designed in glossy white and manufactured from porcelain material to make it sleek and eye appealing. It features a fully skirted trapway making it easy to clean and maintain.

This one-piece toilet has a dual flush system that ensures you choose between partial or full flush as per your flushing needs. The partial flush uses just 0.8 gallons per flush while the full flush option uses an averagely of 1.28 gallons per flush to flush down solid waste. Overall, you will be saving on the water with this top-rated one piece elongated toilet.

It comes with a quick-release matte chrome hinged seat allowing it to be unlatched from the toilet bowl for convenient cleaning. The toilet bowl and seat are elongated for comfort seating when in use. Besides, it comes at a chair height for added comfort and easy sitting down and standing regardless of your height and age. The toilet seat is designed and fitted to close quietly and gently to ensure a quiet toilet visit.

Key Features

  • Sleek modern design
  • Fully skirted trapway
  • Soft closing seat
  • Dual-flush
  • Elongated and comfortable height bowl


  • Economical with flushing water
  • Soft and gently closing seat
  • Powerful flushing despite water economy
  • Modern design with a sleek look that compliments bathroom décor


  • Prone to clogs

Dometic Sealand 510 Plus – Best Water Efficiency

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The Sealand 520 Plus from Dometic is a one-piece toilet ideal for those who are looking for the most water-efficient toilet. This unit is made from highly durable vitreous china material that is resistant to stains and scratching to keep the toilet clean. Besides, the brilliant high-gloss finish is durable and will stay sparkling clean for years.

The toilet comes with an excellent water efficiency of 0.13 gallons per flush thus enabling you to save more on water bills. With the effective rim flush action, you will use the least amount of water per flush. It features an exclusive self-cleaning flush ball with a seal that locks out holding tank odors.

It comes with advanced features like an integrated vacuum breaker to protect the water supply while the soft close seat and lid ensure quiet bathroom visits. The chair-height seat and elongated bowl offer comfortable to use for most adults and the elderly.

Key Features

  • Vitreous China material
  • Soft-close seat action
  •   About 0.13 gallons per flush
  • Integrated vacuum breaker
  • Highly durable gloss finish


  • Very economical with overall water consumption
  • Durable vitreous china material that resists stains and scratches
  • Integrated vacuum breaker that protects water supply system


  • No soft closing lid
  • The rubber seal may leak

Saniflo 023 Sanicompact Self-Contained Toilet – Best Compact toilet

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The Saniflo 023 is a self-contained compact toilet that is ideal for residential applications. It is made from a combination of vitreous China and macerator construction into a compact unit. It is designed into a modern shape, specially designed for installation in tight spaces. So, if you have a small spaced bathroom, this could be your best pick.

The SaniCompact does not need a gravity flow tank for flushing action, the macerating pump cycle is automatic once you press the flush button on top of the bowl. Since the flushing mechanism is electrically timed to allow water to pass through the toilet. By pressing the push button, you activate the timer and solenoid valve to fill and wash the sides of the bowl.

The toilet comes with a standard dual flush version that uses 1.28gpf and 1 gpf alternative. The 1.28gpf option is ideal for flushing solid water while the 1gpf option is good for flushing liquid waste. That way, you significantly save on water.

Key Features

  • Self-contained system
  • 1/1.28 gallons per flush
  • Dual flush system
  • Button flush lever
  • Porcelain material


  • Extremely easy to install
  • Comes at affordable price
  • Simple, compact and sleek design


  • Flawed plastic mold causing sewage leak

Swiss Madison Well Made Forever SM-1T254 St. Tropez – Best Budget

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If you are on a flexible budget and you are afraid of spending on high-quality one piece elongated toilets, then the Swiss Madison Well Made Forever SM-1T254 is the best way to go. While it comes at an affordable price, this toilet model is, without a doubt, worth your money.

It comes with a modern sleek design that complements different bathroom designs and décor. The fully skirted trapway makes it extremely easy to clean and maintain the toilet. The quick-release matte chrome hinges allow you to remove the seat with ease for convenient cleaning.

The toilet comes with a dual flush system that allows you to choose between a partial and full flush. A partial flush delivers 0.8-gallon which is ideal for flushing down liquid waste while a full flush delivers 1.28 gallons of water ideal for flushing solid waste. Even with less water usage per flush, the flushes are quite powerful to push down all the waste and leaving the toilet bowl sparkling clean.

The ceramic material construction ensures the stability, durability and reliability of this toilet for decades. Its elongated bowl and seat offer more room for comfortable sitting while in use. Owing to the affordable price the toilet comes with, you certainly have a gem in your bathroom without breaking the bank.

Key Features

  • Modern design
  • Fully skirted trapway
  • Soft closing seat
  • Quick-release matte chrome hinges
  • Dual flush
  • Elongated and comfortable height bowl


  • Easy to clean and maintain
  • Available at affordable price
  • Fully skirted trapway makes it clog-free
  • Sleek and appealing modern design


  • Requires more flushes at times
  • A bit heavier

WOODBRIDGE B0941 One-Piece Toilet – Best Modern Design

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If you are looking for a top rated one piece elongated toilet with a luxurious modern design, clean, and sleek look that compliments different bathroom styles, then the WOODBRIDGE B0941 is the ideal pick. It is made from porcelain material with magnificent black color.

The toilet comes pre-installed with the soft closing toilet seat, pre-installed water fitting, high-quality wax ring, floor bolts and installation instructions. It also includes a special hand wrench tool to ensure easy tightening of the bolts in narrow spaces.

The skirted trapway offers a sleek overall appearance while making cleaning easier. It has no corners and groves for easy to reach cleaning. Moreover, the chair-height seating makes sitting down and standing up easier for most adults and the elderly.

This top rated one piece elongated toilet is backed by a 5-year limited on porcelain parts against fading or staining of the glaze while a 1-year warranty on the flushing system and the soft closing toilet seat. That way, you are sure of getting the most out of this toilet.

Key Features

  • Luxurious modern design
  • 5-Year Limited Warranty on porcelain and 1-year on the flushing system
  • Skirted trapway
  • Soft-closing seat


  • Luxurious modern design that complements different bathroom styles
  • Pre-installed soft closing toilet seat and water fitting for seamless installation
  • Fully skirted trapway for hassle-free cleaning


  • Very heavy

American Standard 2548A100.020 Studio S Right Height

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The Studio S Right Height Low-Profile from American Standard is a one-piece elongated toilet that comes with a tankless design that complements the modern aesthetics of different bathroom styles. This is a clean unobtrusive toilet that boasts advanced modern features that most low-profile models don’t have.

The innovative PowerFlo flushing technology delivers excellent flushing power to push down waste without a second flush. The flushing system is water-saving as it uses a little as 1.0-gallon of water per flush to completely clear the bowl in one single flush. The flushing system is quieter and requires no electrical power to operate.

The toilet bowl feature two waterways with one flowing through the CleanCurve rim – an exclusive rim design that eliminates the spaces where dirt can hide. The second waterway goes directly through the bowl jet to the bowl jet to clear the bowl quickly and completely. Since the unit comes pre-installed, you will have a seamless installation process.

Key Features

  • Contemporary sleek design
  • Smooth skirted sides
  • PowerFlo flushing system
  • Slow-close seat and lid
  • Ultra-high efficiency 1.0 Gpf


  • Pre-installed for seamless installation in your bathroom
  • Ultra-high efficiency flushing of 1.0-GPF to conserve water
  • Super quiet flushing and soft-closing toilet seat and lid


  • Low-profile might be uncomfortable for tall folks

What to Consider when Buying the Top Rated One Piece Elongated Toilet – Buying Guide

The benefits of a top rated one piece elongated toilet outweigh those of the classic models of a two-piece design. While cleaning a two-piece toilet can be time-consuming and most cases do not attain a 100% cleaning, a one-piece toilet can be cleaned with ease. In this part, we show you what to consider so that you can choose the right one-piece elongated toilet.

Type of One-Piece Toilet

In the market, there is a wide range of one-piece toilet designs. However, you can between solid floor-standing toilets and wall-mounted or wall-hung toilets.  Alternatively, there are also flat and washdown models and several other designs.

·      Wall-mounted one piece


The wall-mounted one-piece toilets are becoming more and more popular owing to their compact design. Regardless, the process of installing such a model is somehow complicated. But what do you get from this type of one-piece elongated toilet? You:

  • Save space thus ideal for small-sized bathrooms
  • Spend less time and effort cleaning due to the compact rough-in dimension
  • Spend less money buying it compared to floor-standing models
·      Floor-Standing One-Piece

Loft+1.28+GPF+Elongated+One Piece+Toilet+Floor+Mounted+with+Seat+Included

A floor-standing one-piece elongated toilet features solid construction and is relatively easy to assemble. However, the major downside is that it takes a lot of space and is therefore not an ideal ick for small-sized bathrooms. The benefits of this toilet model include:

  • Solid construction and great look
  • Easy to assemble and install and ideal for a vertical drain
  • Compatible with surface-mounted cisterns
  • Even with these advantages, the floor-mounted doesn’t go without some weaknesses and they include:
  • They take more space
  • They are difficult to clean owing to their irregular shape
  • They are generally heavy to carry

Material of Toilet Bowl and Tank

When shopping for a top rated one piece elongated toilet, it is important to take a look at the material construction. The material is integral at causing some quality differences as well as adding some special features to the unit.  Some of the commonly used materials to choose between are:


Toilets made of ceramic material are mostly available in classic white. The ceramic material is attractively priced, hygienic and stable clay. Moreover, it gives the toilet an appealing look and cosy effect.


Porcelain material slightly differs from ceramic in that it uses white kaolin clay to make the toilet even more appealing and resistant to stains and scratches owing to the smooth surface. Besides, it is a lot easier to clean compared to ceramic. To get the most out of your one-piece elongated toilet, stick to these two materials to ensure durability and leak-free service for many years.

Flushing System and Water Usage

One-piece toilets are advantageous owing to their reduced water requirement. As such, their design is not only considered hygienic but also water-saving and eco-friendly. For a one-piece toilet, 1.28 gallons of water is enough to make a single flush to push down all the solid wastes. However, some models are more economic to use as low as 1 gallon per flush. This rate is well below EPA Water Sense’s recommendation of 1.6 gallons per flush.

A one-piece toilet with a dual flush system offers an even higher water efficiency. You can use one button to flush at around 0.8 gallons per flush. You can reduce the maximum amount of water in the cistern by opening it and turning down the float (which is attached to a threaded rod) so that the water flowing into the cistern raised it earlier to close the inlet earlier. Other ideal flushing systems to consider in one-piece toilets include the double cyclone and tornado flush system.

Seat Height

It is crucial to pay attention to the seat height of the one-piece toilet you are buying. Some models come with a generous height for a more comfortable sitting experience while some are designed to sit a bit lower to the ground. The taller seat offers good support to the back and knees, so it is great for elderly people and taller adults. So get a toilet model with a chair height toilet seat for you to have a greater bathroom experience.

Extra Features to Look Out for

  • SoftClose Seat

A soft-close seat design allows the toilet seat and lid to lower gently without slamming. People with limited mobility will equally benefit from a soft-close seat. The seat won’t have to be forced down manually but it will close down slowly and automatically onto the toilet bowl. Keep in mind that the automatic lowering is purely mechanical and does not need a power connection or a battery.

  • QuickRelease

Seats with quick release hinges are convenient because you can remove the seat without the need to use any tool. In most models, you only have to press a button or two to remove the seat. Once you are done with cleaning you can easily return the seat without any difficulty.

  • Smart Toilets with remote control

Some modern one-piece toiles are fitted with bidets that come with remote control.  With added enhancements like heated seats, lighting systems, auto-flush systems can easily be controlled via remote control. For example, a smart toilet with remote control is the Bio Bidet Ultimate BB-600 Advance.

Final Thought

A one-piece elongated toilet is a popular toilet model that is designed, especially for convenience with the current ecological requirements, needs of people with adverse mobility, for all-around use and hygiene. Therefore, choosing a top rated one piece elongated toilet for installation in your home is essential. You will not only ensure low water consumption but also have the best toilet design that compliments your other bathroom décor.

We hope you can find the right one from the 10 best top rated one piece elongated toilets. You can also take advantage of the buying guide to find one that perfectly fits your bathroom needs. We believe that there is everything to love about in a top rated one-piece elongated toilet!

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