Best One Piece Toilets – Top Picks in 2023 and Reviews

by Dan | Last Updated: April 25, 2023

Our editors independently research, select and recommend the best products. Some of these may be affiliate based, meaning we earn a small commission (at no additional cost to you) if items are purchased.

One piece toilets are the rave at the moment. These fixtures are go-to options for those who want to upstage their traditional bathroom designs with the latest industry offerings.

The sleek and modern appearance of these fixtures might be what you need if you fancy a minimalist bathroom décor. They also strike a balance between design and comfort in small bathrooms without filling them to the gills.

We review some of the best one-piece toilets in regard to features, performance, and reliability to help you narrow down your options.

Top One Piece Toilets

Best Overall
WoodBridge T-0019
  • WoodBridge T-0019
  • Our Rating: 9/10
  •  Water Consumption & Flush:
    1.28 GPF
    Siphon Jet
  •  Dimensions:
  •   Features:
    Easiest Toilet to Clean, Super Quiet & Powerful Flushing
  • Price: 
Toto MS604114CEFG-01 Ultramax II
  • Toto MS604114CEFG-01 Ultramax II
  • Our Rating: 8/10
  •  Water Consumption & Flush:
    1.28 GPF
    Tornado Flush System
  •  Dimensions:
  •   Features:
    Powerful, Quiet Flush, Universal Height, SoftClose® Seat
  • Price: 
Toto CT418FG-01 Aquia
  • Toto CT418FG-01 Aquia
  • Our Rating: 8/10
  •  Water Consumption & Flush:
    1.6 GPF
    Gravity Flush Toilet
  •  Dimensions:
  •   Features:
    CeFiONtect Ceramic Glaze, Universal Height, Low Water Consumption
  • Price: 
Toto CT418F#01 Aquia
  • Toto CT418F#01 Aquia
  • Our Rating: 8/10
  •  Water Consumption & Flush:
    1.6 GPF
    Gravity Flush
  •  Dimensions:
  •   Features:
    Universal Height, CeFiONtect
  • Price: 
Kohler 3810-0 Santa Rosa
  • Kohler 3810-0 Santa Rosa
  • Our Rating: 8/10
  •  Water Consumption & Flush:
    1.28 GPF
    AquaPiston Flush
  •  Dimensions:
  •   Features:
    Easy-to-Clean Design, Saving Water, Comfort Height
  • Price: 

1. WoodBridge T-0019 – Editor’s Choice

WoodBridge T-0019

Upscale Sleek Design

Woodbridge Bath is known for supplying and marketing its toilets directly to the clients. That’s what makes it possible to get a fixture with a sleek modern upscale look such as the T-0001 at its price.

The Woodbridge T-0019 is cheaper than the Toto Ultramax II but still packs a good punch at its price.

Dual Flush Toilet

The most notable feature is the absence of a flushing lever for a sleek flush button at the top of the cistern. This button offers you 2 flushing options: 1.6 GPF and 1.0 GPF for solid and liquid waste respectively.

Water Saver

This toilet’s dual flush mechanism might be a real water saver especially if you have several kids in the house. You only need to teach them on how the different buttons work though.

Although the Woodbridge T-0019 has a slightly higher flush rate for solid waste compared to the Ultramax II, we did realize that there we fewer complaints about the need to flush twice with the T-0019.

Elongated Bowl

Other notable pros with this toilet include an elongated bowl for stocky users and a fully glazed surface to resolve clinging issues. Its comfort height design is a winner for the senior citizens and users suffering from arthritis too.

Check Price at Amazon

2. Toto MS604114CEFG-01 Ultramax II – Premium Pick

Toto MS604114CEFG-01 Ultramax II

Most Popular One Piece Toilet On The Market

Our first pick here is one of the most popular single construction high profile commodes on the market today. This fixture has a lot to go for ranging from its futuristic design to its quiet but powerful flushing performance.

Added Comfort

The Toto MS604114CEFG-01 has an elongated bowl that most adults might appreciate. With its additional 2 inches (compared to a round-front bowl), such a model offers a wide sitting surface for your thighs to add more comfort to your ‘business’.The shape of the bowl coupled by its longer slope also helps in minimizing messy spashbacks.

17.25 Inches Height

To up the convenience of a large bowl, the Toto MS604114CEFG-01 also passes ADA height requirements. If the standard seat height (15 inches) tends to cause chaos to your back and hamstring, this toilet’s 17.25 inches might be the real deal for you.

Single Flush (1.28 GPF)

The Ultramax II also brings you Toto’s Double Cyclone Flushing Technology that lets out 1.28 gallons of water in a forceful centrifugal action to sweep the contents in a single flush and leave the bowl clean at the same time.

Sanagloss Finish

This toilet also Toto’s patented Sanagloss finish that aims at keeping the bowl cleaner for longer while repelling bacterial build-up, mold, and odors.

To seal the deal, you get a ready-to-install commode with a softclose seat that helps in reducing slamming.

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3. Toto CT418FG-01 Aquia – Budget Buy

Toto CT418FG-01 Aquia

Easy To Clean Off-The-Floor Design

If space is a rare commodity in your bathroom, then a wall hung toilet might be the best option for you. Mathew North of the slowhome studio says that a wall hung commode could save you up to 9 inches at the front compared to a floor-mounted system.

The Toto CT418FG-01 is one of the 2 wall hung models that Toto offers for the American market. Its off-the-floor design makes it easy to clean the space underneath it besides making it easy for the physically challenged to turn.

It’s also super easy to clean since the tank resides inside the wall. This toilet also has the sanagloss coating that prevents brown wastes from clinging to the sides.

Dual Flush System (0.9 and 1.6 GPF)

The Toto CT418FG-01 has a dual flush system. It uses 1.6 GPF for a full flush and 0.9 GPF for liquid waste.

About the seat height, Toto leaves it to your discretion to install the toilet to your preferred height at between 15 inches and 19 inches.

The only issue with this toilet is the high cost of the support frame and the installation expenses. However, if money is no object, this is about the best way to enter the new era of toilets.

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Editor’s Choice

WoodBridge T-0019

While the Toto MS604114CEFG#01 Ultramax II might win the hearts of many, our best pick here would be the WoodBridge T-0019. Why?

First, unlike the Ultramax II, there were almost zero complaints about debris clinging onto this toilet’s walls. Again, its slightly higher flush rate (1.6 gpf) coupled by the siphon flushing design and glazed trapways ensure a successful flush each time.

Even better, this toilet has an easy-to-clean design compliments to its skirted trapways. And it’s also way affordable than its immediate rival, the Ultramax II.

Best One Piece Toilet Comparison Chart

Rank:Model:Our Verdict:Price:Our Rating:Water Consumption:Flush Type:Dimensions:Type:Special Features:Rough In:Shape:Material:Color:Finish:Weight:Installation Method:Certification:Warranty:
#1WoodBridge T-0019Best Overall (Our Pick)$$9/101.28 GPFSiphon Jet, Dual Flush28.5x14.5x27.5"One PieceEasiest Toilet to Clean, Super Quiet & Powerful Flushing12"ElongatedCeramicPure WhiteWhite Ceramic119 poundsFloor MountedWaterSense5 Year Limited Warranty
#2Toto MS604114CEFG-01 Ultramax IIPremium$$$8/101.28 GPFTornado Flush System28.3x16.6x28.8"One PiecePowerful, Quiet Flush, Universal Height, SoftClose® Seat12"ElongatedVitreous ChinaCotton WhiteChrome99 poundsFloor MountedEPA WaterSense1 Year Limited Warranty
#3Toto CT418FG-01 AquiaBudget$8/101.6 GPFGravity Flush Toilet23.8x15.8x17.5"One PieceCeFiONtect Ceramic Glaze, Universal Height, Low Water Consumption15 to 19 inches
(installation height)
ElongatedVitreous ChinaCottonCotton66.5 poundsWall HungWaterSense1 Year Limited Warranty
#4Toto CT418F#01 Aquia$$8/101.6 GPFGravity Flush Toilet21x14.2x15"One PieceUniversal Height, CeFiONtect15 to 19 inches
(installation height)
ElongatedVitreous ChinaWhiteCotton66.5 poundsWall HungWaterSense1 Year Limited Warranty
#5Kohler 3810-0 Santa Rosa$$8/101.28 GPFAquaPiston Flush Technology31x20.8x29"One PieceEasy-to-Clean Design, Saving Water, Comfort Height12"ElongatedVitreous ChinaWhiteWhite102 poundsFloor MountedWaterSense1 Year Limited Warranty
#6Galba Small Toilet One Piece$$$8/101.6 GPFDual Flush24.5x14x27"One PiecePowerful, Quiet Flush, Self-Cleaning Glazed Surface12"ElongatedVitreous ChinaWhiteWhite90 poundsFloor MountedcUPC Approved1 Year Manufacturer Parts Warranty
#7Saniflo 023 SaniCompact 48$$$$$8/101 GPF and 1.28 GPFGravity Flush Toilet18.2x14.5x15.8"One PieceEasy to Install, Quiet and Adjustable, 12"ElongatedPorcelainWhiteWhite62.2 poundsFloor Mounted3-UL Classified, CSA Listed2 Year Warranty
#8American Standard 2403.128.020$$8/101.28 GPFCadet 3 Flushing System28.5x15.5x28.5"One PieceExtra-Wide Three-Inch Flush Valve, EverClean Surface12"RoundPorcelainWhiteWhite97 poundsFloor MountedWaterSenseLimited 5-Year Warranty
#9Dometic 320 Series Standard Height$8/100.125 GPFExtreme Low-Flush Technology22x14.8x19.8"One Piece360 Degrees Rim Wash, Standard Heightn/aElongatedVitreous ChinaWhiteWhite37.5 poundsFloor MountedCheck With The ManufacturerCheck With The Manufacturer
#10Dometic 320 Series Low Profile$$8/100.125 GPFPedal Flush Control22x14.6x15.5"One Piece100% Vitreous Ceramic Bowl, Ergonomic Foot Pedaln/aElongatedVitreous ChinaBoneBone36.5 poundsFloor MountedCheck With The ManufacturerCheck With The Manufacturer

Why A One Piece Toilet?

The major difference between a 2 piece and a one piece toilet is that the latter marries the tank and the bowl into a single unit.

One piece toilet systems are pretty much similar to 2 piece commodes where the tank is mounted on the bowl. But you will differentiate the 2 since a one piece fixture does not have a seam between the components.

The Birth Of Tankless Toilets

Toilet manufacturers are in a raging competition to churn out the best units for the minimalist bathroom owners. If you don’t like the look of all the nooks and crannies in modern toilets, I bet the tankless models will interest you.

True to their name, tankless models scrape off the tank so that only the bowl is visible. Some units such as the Toto 970CEMFG-01 innovatively hide the tank into the bowl so that there isn’t a cistern protruding upwards. Others, such as the Toto Aquia Ultamax II hide their tank system in the wall.

Bathroom benchmarks state that one-piece fixtures are the future of toilets. But what advantages do they bring? Are there any drawbacks?

One Piece Toilet Systems Advantages

Modern Feel And Look

One-piece toilets are making the wave in terms of design. If you are remodeling or planning for a new bath, a one-piece commode might complement your contemporary design.

‘Same Day’ Shipping

The biggest fear that comes with buying a 2 piece unit is the likelihood of the 2 components being shipped on different dates. This can be really inconveniencing if you had planned to take the day off to install the fixture.

If you are unlucky, the second piece may have a different color from the previous component. So, you’ll either have to bear with a toilet with colors that don’t match or ship it back for a replacement.That’s the problem that one piece toilets come to solve.

Easy To Clean

The crevice between the bowl and the tank can offer a foothold for germs to breed. These gaps can tuck away really disgusting materials if not given proper attention. And no matter how hygienic you are, there are some parts that will always go untouched not unless you want to uninstall the cistern every time you clean the toilet.

You could save yourself from all this hassle by getting a one-piece fixture.In addition, wall-hung one-piece toilets do not rely on a pedestal base. This makes cleaning, mopping, and even vacuuming the bathroom floors quite easy.

Toilet Clearance : Do they save space?

If your bathroom is suffering from space lengthwise, a wall-hung commode or a very compact one might be the way out. These units save a lot of space at the front and could, therefore, help you meet your municipality’s building codes. One piece toilets with a visible tank are another thing though.

Speaking to, Steve Bissel, Marketing Manager for Kohler, says that one-piece toilets are equal to their 2-piece alternatives when measured from the bowl rim to the floor. But their one-piece design creates an illusion that the fixture is smaller and thereby gives your petite bathroom a spacious feel.

One Piece Toilets Disadvantages


Dan is the editor in chief and founder of this site, after running into troubles with his own old toilet a while ago. Discussing toilets is not your everyday topic, so let’s talk toilets today.