{Top} 10 Best One Piece Toilets 2023 Reviews & Buying Guide

If you are searching for toilets that will factor your modern bathroom’s decoration and also represent your palatability, One Piece toilets will be the best option that fulfills your demand. The modern and sleek design of these units also hex many look-conscious buyers. Many homeowners also like One Piece cloakroom easier to clean, as they don’t have the crack and cleft that occur in the two-piece models. Dozens of One Piece toilets already out there, but just a few of them stand If you are looking for toilets that will multiplier your modern or contract bathrooms decors. The best One Piece toilets might be just what you demand.

The modern and sleek design of these units out today.

Best One Piece toilets

Unlike some toilets that have a separate tank and seat, one-piece toilets feature offered a solid structure and just one piece that only purveys as the base, tank, and seat.

Adding one of these best flushing toilets to your home advancement your comfort and helps to update your bathroom too. The installing system is easier than other toilets.

Therefore, you might find it difficult to choose only the best models from the American crowded market and this is where we come in handy. We have reviewed the top 10 Best 1 Piece toilets on the market today and given you a buyer’s guide to help you out.

Dometic TAN 5 Gallon portable toiletDometic TAN 5 Gallon portable toiletDometic TAN 5 Gallon portable toiletDometic TAN 5 Gallon portable toiletDometic TAN 5 Gallon portable toilet
KOHLER 3810-0 Santa RosaWoodBridge

American Standard 2004314.020 Champion Swiss Madison SM-1T254 St. Tropez
Customer Rating:
4.4 out of 5 stars
Customer Rating:
4.1 out of 5 stars
Customer Rating:
3.9 out of 5 Stars
Customer Rating:
4.2 out of 5 stars
Customer Rating:
3.9 out of 5 stars
Product Dimensions:
28.5 x 14.5 x 27.5"
Product Dimensions:
12 Inch
Product Dimensions:
27 x 15 x27 Inch
Product Dimensions:
29.8 X 17.8 X 29.5 Inch
Product Dimensions:
26.6 x 15 x 31 Inch
Water Consumption
1.28 GPF
Water Consumption
1.28 GPF
Water Consumption
1.28 GPF
Water Consumption
1.6 GPF
Water Consumption
1.28 GPF
Flush Type
Siphon Jet, Dual Flush
Flush Type
Gravity Flush
Flush Type
Dual flush
Flush Type
Piston flushing
Flush Type
Dual Tornado flush

Top 10 Best One Piece Toilets :

1. WoodBridge T-0001 Dual Flush Elongated One Piece Toilet

The WoodBridge T-0001 is a highly productive One Piece toilet that is well-designed as well as environmentally friendly.  People who love a modern finish to their lavatory, this amazing toilet will give the ennoble features that will strike you for your modern bathroom and the surrounding.

Soft closing seat feature restrains the seat from slamming down against the rim. Which helps to prevent the noisy bangs servitor with it. Furthermore, it helps to avert the hazard of damage and cracks appear to the bowel itself.

The other feature of this toilet is the super glazed bowl that accommodates for a more potent and bum flush which also boosts to prevent the buildup of pebble and other pollen. This flush also minimizes the amount of water you use for every flush and deals with a dual flush system.

 Powerful dual flushing that cleans the toilet bowl in just one flush but at the same time, it is very silent. It allows you to choose whether you want to go with a 1.6 gallon or 1.0 -gallon flush, hence, you can use minimal water for every flush.

When it comes to the size, this One Piece toilet is consolidated and will not take much space of your bathroom.

  • Dual flush system
  • Elongated bowl for comfort
  • High-end soft closing seat prevents slamming
  • Easy to clean with its skirted design
  • Outstanding One Piece design matches with most modern bathrooms
  • EPA WaterSense certified
  • 5 year limited warranty
  • Flushing buttons on top of the toilet are too small and need one more flush for long in order for the toilet to flush
  • Needs professional installation and it is quite heavy for one person to install

2. KOHLER 3810-0 Santa Rosa Comfort Height Elongated Toilet.

Elegant look and larger than comparable One Piece toilet these words are extremely used for KOHLER 3810-0SANTA ROSA. It’s a modern One Piece toilet from Kohler which saves water with a 1.28-gallon flush.

This design is easy to clean and it’s just flawless and there is no plenty of space between seat and tank. The most advantage of multiple colors- rather than white porcelain-accommodate you to hide dust slightly if you don’t clean the toilet as frequently as you should.

People also love it because of its comfort Height(R) feature offers chair-height seating that makes seating down and standing up easier for adults.

KOHLER 3810-0SANTA ROSA has a gravity flush mechanism but the incorporeal Kohler’s box flush system always give an extra kick to flush to remove clogging. Users also commend that this system is extremely effective, even compared to pressure-flushing systems, and crave a very little plunging.

Its lower 1.28-gallon flush also saves a small amount of water. After useing it people found that this flushing system was neither especially noisy nor especially quite.

One thing that users would have liked this toilet because of its soft close lid, from the seat that the toilet ships with have a tendency to close.

  • Powerful and efficient Aquapiston flushing system
  • ADA compliant and WaterSense certified.
  • Standard chair height.
  • Easy to clean
  • Saved 1.28 gallons of water per flush
  • Sometimes more need then one flush to clear the waste in the bowl.
  • Sometimes leakages have been reported but the customer care is always there to help.
  • The Toilet cover is thin.

3. WOODBRIDGE T-0033 Dual Flush Elongated One Piece Toilet.

Woodbridge T-oo33 is Clean, sleek look and compliment with different styles like a modern, craftsman, traditional and etc. people who like to add new accession they would definitely like this model.

This toilet designed with skirted trap way which creates a sleek look and makes cleaning easier. Compare to other toilets, it has no corners and grooves that are way easy to reach every corner for cleaning, not like other toilets hard to reach.

The other feature of this toilet -fully glazed flush system. Bring super quiet and powerful flushing – NO clogs, NO leaks, and NO problem.

One of the key things to note about this toilet it’s chair-height seating that makes sitting down and standing up easier for most adults.

  • Powerful Siphonic Flush
  • Sleek and low profile skirted elongated shaped
  • Easy To Clean Design
  • Included Soft Close Seat
  • Luxury bidet seat
  • Toilet seat is quick Release
  • WaterSense Certified
  • Wax Ring And Bolts Included
  • Installation method is quite difficult

4. American Standard 2004314.020 Champion 4 Elongated One Piece Toilet Seat.

American Standard Champion 4 is one of the best selling One Piece toilet on Amazon. It is well known for its great features and well designed for both performances as well as appearance.

These toilet features – a clog-free experience with the Champion 4 powerful flushing System. Every flush built to move solid waste at a much higher efficiency than most capacity.

Another feature of this toilet -EverClean surface that’s easier to clean, and stays cleaner, longer than others. In this model also include slow close toilet seat that will prevent the seat slamming for a quieter as well as more peaceful household.

  • Included EverClean surface that prevent the growth of mold, mildew, and bacteria.
  • Made with fully Vitreous China material.
  • Siphon jet flush system that cleans the large waste in a single flush.
  • ADA compliant height.
  • Elongated bowl design with extra sitting space.
  • Soft –close toilet seat
  • No clogs
  • Easy to clean
  • The base is not level with toilet
  • The toilet is quite noisy in the flushing time
  • The toilet does not come with a toilet seat and wax ring

5. Swiss Madison SM-1T254 St. Tropez One Piece Toilet

Swiss Madison SM-1T254 St

Homeowners like to buy this Best One Piece toilet because of it’s a square shape. It is also popular for its reasonable price. People who do not want to go with elongated shapes, these clients go for it.

Swiss Madison design with sleek outlook and a unique. Another cool feature of this toilet is – toilet seat isn’t bolted to the bowl, so it is super easy to remove.

One of the key things about this toilet to note-it saves a lot of time cleaning the toilet because of its soft-close seat.

The toilet also comes in the market with one of the best flushing systems today. This system always ensures that your toilet keeps clean after every use. And the best part, it doesn’t use a lot of water to attain this task. Need 0.8 and 1.28 gallon every flush, and the flushing power is also very nice.  Install system is also very easy.

  • Sleek and eye appealing deasign
  • Dual Flushing system
  • Fashionable design and convenient height
  • Quick-release seat
  • Easy to clean
  • affortableprice
  • Seats can be transferred if necessary
  • Slow close seat
  • The square bowl quite uncomfortable to sit on
  • Often there are clogging issues
Dometic TAN 5 Gallon portable toiletDometic TAN 5 Gallon portable toiletDometic TAN 5 Gallon portable toiletDometic TAN 5 Gallon portable toiletDometic TAN 5 Gallon portable toilet
Toto MS604114 CEFG#01 UltraMax IIBAI 1009 Contemporary ToiletAmerican Standard 2034.014.020 Champion-4
TOTO MS854114 ELG#01 Eco UltramaxToto
CUMFG#01 Neorest
Customer Rating:
4.3 out of 5 stars
Customer Rating:
3.4 out of 5 stars

Customer Rating:
4.2 out of 5 stars
Customer Rating:
4.6 out of 5 stars
Customer Rating:
3.8 out of 5 stars
Product Dimensions:
35 x 33 x 23 Inch
Product Dimensions:
26.5 x 15.5 x 30.5 Inch
Product Dimensions:
29.8 x 17.8 x 29.5 Inch
Product Dimensions:
31.8 X 28.9 X 19.3 Inch
Product Dimensions:
32.2 x 15.5 x 21.5 Inch
Water Consumption
1.28 GPF
Water Consumption
1.6 GPF
Water Consumption
1.6 GPF
Water Consumption
1.2a8 GPF
Water Consumption
1.0 GPF
Flush Type
Tornado Flush
Flush Type
Dual Flush
Flush Type
Siphon Jet Flush
Flush Type
Gravit flush
Flush Type
Siphon Jet Flush

6. Toto MS604114CEFG#01 UltraMax II One-Piece Elongated

This is another Best 1 piece toilet that is coming into the market and claiming precedence. Because of the ADA COMPLIANT ELONGATED, The UltraMax 2 has a lot to offer besides being a comfort to set. It vaunts a universal height with CEFINTEGT embodies with its 16 1/8 inch rim height that’s the way you are short or long it will give you great comfort when you take a seat and that is exactly what company was aiming for.

The TOTO Ultramax2 features a sleek, One Piece design that will give a fantastic appearance of your bathroom. the One Piece design not only give an aesthetically glamorous but also offers the advantage of being easier to the clan than a two-piece toilet. As there was no gap between the tank and bowl, so we remove the hiding place for dirt and debris.

The TOTO Ultramax II features TOTO’s Tornado Flush a hole-free rim design with dual-nozzles that creates a forceful centrifugal action that can easily clean the rim and bowl properly with every single flush. It has a super-smooth Sana Gloss glaze which removes debris, mold, and bacteria from sticking at the ceramic surface. So I think this Toilet is the best toilets to buy.

  • Using 1.28 gallons of water per flush it save money on your water bills
  • Double Cyclone Flushing System always creates a powerful centrifugal force.
  • Takes maximum 10 to 15 seconds to refill its Tank.
  • Super-smooth SanaGloss surface so bacteria and mold can’t grow.
  • Elongated bowl longer space to rest your thighs comfortably.
  • SoftClose elongated seat that prevent accidental and intentional slamming by kids and adults.
  • wax seal does not exist.
  • Tank lid is not totally flat.

7. BAI 1009 Contemporary Toilet – One Piece Dual Flush Soft Close Seat

BAI 1009 contemporary toilet is a high quality and performance bathroom fixtures within a contemporary and modern feel.

BAI’s 1009 contemporary toilet features with seeking to unseat its contemporaries. Because of this statement this is one of the best and most cost-efficient toilets in the market today.

Supremely sophisticated and sleekly designed- BAI 1009  is a great addition to any bathroom. It gives such as more modern homes look with a centralized theme.

One of the key things about this toilet to note – this One Piece construction is cUPC certified. It has High-efficiency dual-flush – 0.8/1.6 GPF. Specially features with ADA approved seat height, so easy to remove the soft-close seat

  • Chrome dual flushing button
  • High efficiency dual flush – 0.8/1.6 GPF
  • Made from high quality vitreous china
  • Elongated skirt
  • Fully cUPC-compliant
  • Siphonic S-Trap
  • Fully glazed tank & S-Trap
  • Easy to remove soft-close seat
  • ADA approved certified
  • Less experience to go with whenever you purchase on BAI toilets.

8. American Standard 2034.014.020 Champion-4

american standard champion 4 is specially designed with Ever Clean surface for easy to keep clean. This is the Best one piece toilet for comfortable Seat Height. The height of the seat is to the standard ADA recommended height and you must be purchased it separately.

One of the key things to note about this toilet-it has a very high rate flushing capacity of 2.2 lbs. This capacity is almost 70% higher than the industry standard. This is acquiring by a summation of using a 4” flush valve, which every time delivers 1.6 gallons of flush water in less than 1 second.

The flush is also supported by a 2 3/8” fully glazed waste pipe. One thing that surprising for the user- the flush system is fully tested before it leaves the factory, giving American Standard the reliance to give the Champion 4 a limited 10-year warranty.

  • Elongated bowl with comfortable design.
  • Durably made of vitreous china material
  • Easy to clean
  • EverClean surfacethat prevents debris, mold, mildew, and stains from sticking to the toilet
  • Installing system is easy with the 12-inch rough-in
  • Flushing system moves mass 70% larger than the industry standard
  • ADA compliant
  • 100 % factory tested
  • It doesn’t come with a toilet seat thus you will have to buy it separately.

9. TOTO MS854114ELG#01 Eco Ultramax ADA Elongated One Piece Toilet with Sanagloss, Cotton White

This is definitely among the top One Piece toilets when considering its performance. This toilet delivers the value for money when you talk the features it offers.

 It has an attractive feature, like an ideal for design and construction that gives a beautiful appearance to your washroom. Due to its compact size, you can fit it even in small spaces.

Furthermore, the fact that it features the sanagloss finishing -assured to remains new for long no matter how you clean it. It is also ADA complaint- works wonder for most homes.

One of the key things about this toilet to note – it has an impressive flushing system. This flushing system enables to give some super flushing that will leave your toilet clean. And it does not need a lot of water to terminate this.

The model also added features high-efficiency siphon ability which ensures the bowl is clean around the clock. It’s another good thing that this unit is easy to install. So, if you want to save money, time, and effort, you can choose the model for you.

  • Elegant and sleek finish.
  • Super quiet and powerful flushing system.
  • Elongated bowl with universal height.
  • Low flow toilet regarding its ability to flush material
  • ADA compliant certified.
  • The gloss diminishes if not cleaned time to time

10. Toto MS992CUMFG#01 Neorest best One piece Toilet

Now I am talking about the most versatile and the most expensive toilet but worth of the money that is The Toto Neorest One Piece toilet.

Now I am talking about the most versatile and the most expensive toilet but worth of the money that is The Toto Neorest One Piece toilet.

One amazing thing about this toilet-, its mechanism feature is a high-quality double cyclone flushing mechanism for ultra-high efficiency. A partial flush uses only 0.8 GPF, while a full flush uses 1.0 GPF.

This toilet design with eco-friendly and it does not come with a toilet tank. It is one of the most powerful one piece toilets from The best Toto toilet brand.

One of the key things about this toilet that after using this toilet, it automatically flushes makes it very hygienic. It also has a comfortable elongated bowl with a SoftClose seat that removes slamming.

If you feel cold, you can turn on the heated toilet seat and be comfortable. The compatible remote allows you to change the temperature as you like for your better experience. Summarizing all these features, the nearest toilet always brings a new experience into the bathroom that has not been seen before.

  • Exceptional oval-shaped toilet modifies the bathroom
  • Ultra-high efficiency toilet
  • Comfortable elongated toilet design
  • Has a remote control to operate hands-free operation
  • Added heated seat for comfort when the toilet is cold
  • Powerful flushing system that clears waste in a single flush
  • It is expensive
  • It is quite a challenge to use by first-timers and needs time to learn it .

What Is A One Piece Toilet?

If the toilet and tank are intermixed together without any parts, then the toilet is known as one piece toilet. It is known as single piece toilet also.

If the toilet and tank are separate and attached using fittings, then it is known as two-piece toilet. It is called as coupled toilets also.

One Piece Toilet Advantages:

One Piece toilet has almost similar functions with two-piece toilet, then it’s a burning question- why should customers select One Piece rather than two-piece toilet? Especially, the price of a One Piece toilet is more expensive than a two-piece toilet.

Ok, let us know how One Piece toilet came to the world. One Piece toilet was firstly innovated in 1885, Thomas Twyford.

Earlier it was not as modern design and function as today. It already had the U-shape trap design, but the tank was dangling high on the wall like a pull-chain toilet. But nowadays, Best one Piece toilets 2021 have these amazing functions:

  • Easy installation system– due to its One Piece design system, the owner or the plumber does not need to attach the tank to the bowl anymore. You can follow our article its help to install a new toilet “how to install a new toilet
  • Small on size – one of the good things of it saves a lot of space in your bathroom as well as gives a modern look. To be honest, if you choose the wall hung model, as well as the tankless design, can save you tons of space in your cloakroom.
  • More Easier to clean – having no crevice or joint between the water tank and bowl, the one-piece toilets are way easier to clean compared to a two-piece toilet.
  • Less maintenance – because of the single-piece toilet’s tank and bowl are attached together, so there’s less possibility to break down.
  • Less shipping problem – 1 piece toilet always shipped as a whole product, unlike a two-piece toilet needed to be sent separately, and often time causes a lot of problem in the shipping process.
  • Comfort height – normally, the bowl sit is at 17 inches than 15 inches

What to look for when buying a toilet

Toilet design:

A toilet can change the interior home design and it also represents your personality. So always keep in mind when want to set up your toile- where it will be set up and how it will be looking your bathroom.

If you are going to put in a second toilet for your basement or by the garage, the design may not matter that much. But if you going to fix it in your dreaming resort then you need to think about your bathroom design. Also if you want to give a new and elegant look in your cloakroom then you will definitely go with a 1 piece toilet

Water usage: high-efficiency toilets vs regular dual flush toilets:

A lot of good efficient toilets are available on the market right now. All the machine mechanism tries to minimize the uses a lot of water. Around 30 to 40% of all water usage in American homes for the purpose of a latrine. Companies are trying to get a new eco flush toilet can cut your water spending back by no less than 25%.

If you live in a state like California, where toilets can’t use more than 1.28 gallons per flush you do not even have your own choice and have to limit yourself to looking at just low flush toilets.

There are two types of low flow toilets:

  • High-efficiency toilets
  • Dual flush toilets.

High-efficiency toilets always use only 1.28 gallons of water per flush, while dual flush toilets give you the option to choose between flushing-little delivers with 1.28 gallons of water and big delivers with 1.6 gallons of water. So, always you have chosen a toilet that most efficient toilet. Otherwise, you can give yourself a little freedom and chose a dual flush toilet.

Toilet Prices

It’s important – you have to keep in mind about your budget planning when you go toilet shopping. As our previous experience, expensive toilets are not always the best toilets. There are a lot of cheap toilets or affordable toilets in the market that has all the features and qualities you need. So don’t let dazzle yourself to see the cover of the topper. Keep away yourself by some extra bells and whistles or fancy descriptions but stick to the toilet cost you have in mind.

Macerating vs standard toilets

Standard toilets have an S-shaped waste pipe as they send the waste down into the sewer, a cesspool or another wastewater system. Macerating toilets, on the other hand, the first mold whatever’s being flushed into a pap, which is then being pumped into the waste adjustment system.

Because macerating toilets do not depend on gravity or an exploitation system, they can be placed level to the waste pipe or even below it. This advanced mechanism, as well as their flexible placing options, make macerating toilets more expensive than standard toilets.

 Toilet Height

The standard toilet height of toilet -14 to 15 inches high measured from the floor up to the top of the toilet bowl, the seat not included. This is fine for small and average height people. But taller people, elderly people and people with physical problems often prefer a higher toilet.

In this fact ADA (Americans with Disabilities Act) standards, toilet seats need to come 17″ to 19″ above the floor, which, for most seats, means the toilet needs to measure at least 16.3″ up to the top of the bowl.

When you prefer a high toilet, look for a toilet that is ADA-compliant or these as categorized as a Right Height or Comfort Height toilet.

Flush type

There are various types of flushing you can go with gravity flush systems, pressure-assisted flush systems as well as macerating toilets.

A gravity flush toilet depends on gravity to attraction the water from the toilet tank into the toilet bowl, thus siphoning whatever’s in there down. Since there are no extra mechanics involved, this is one of the quietest flushing systems I have ever seen.

A pressure-assist toilet has a tank which tops up with water in such a way that air pressure can put in. When you switch on the flush, the pressure shocks the water down the bowl to get rid of clogs in there. Because of the blast created by releasing the pressure, these toilets tend to be a bit loud than the ones with other flushing systems.

Elongated or round toilet bowl

Toilet seats come in the market place with many sorts of materials, but the most important things you have to keep in your mind to choose your Best toilet seat is whether you want an elongated one, or around one. Most manufacturer’s companies will not include the seat in the toilet price and with some models. In this time you have the option in your hand to choose whether you want an elongated or a round seat for your toilet.

You will have to make sure it fits on the bowl that you are going to pick up for your bathroom and thus get either a round or an elongated bowl depending on your seat comfortable.

Elongated toilet seats are elliptical or egg-shaped, being a few inches longer than round seats. Some people find them more comfortable. But if your bathroom is narrow space then it blocks the door from being able to open easily. people take up a bit more space so that’s something to consider about the elongated toilet seat.

Tanked vs tankless toilets

Maximum toilets designed with a tank, although it’s not always visible. For example, wall-hung toilet. These toilets have a tank system that’s tucked away in the wall. If you want to install this model, then it requires a little more break work in an existing and not a newly built bathroom, but it can be interestingly set up within limited space.

Macerating toilets are truly tankless when they pump water directly work into the bowl to then suck it out, straight into the macerator.

Compare toilets and read reviews of toilets

A lot of toilets design offer in the market place. All almost all of the features of the toilet still be different that you are looking for. So make sure to compare them and read reviews of toilets you’re interested in online, like the ones I’ve put together here for you.


Taking into account all variables discussed above, such as price, flushing power, comfort, and height, the Toto MS604114CEFG#01 Ultramax II comes out as the Best one piece toilets on the market place right now.

If you’re looking for a specific kind of toilet for your cloakroom, I hope the different reviews in this guide will be helped you with that, as well as the overview of the top ten toilets.

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