Best One-Piece Toilet Reviews 2021 [Top 10 Best Selling]

One-piece toilets are taking over the market slowly by slowly. People are falling in love with these toilets because they have a sleek and elegant appearance that complements most modern bathrooms. Additionally, these toilets are easy to clean and maintain, which is a plus to many homeowners. However, the real difficulty lies in selecting the best one-piece toilet.

Since there are several one-piece toilets on the market from different manufacturers, choosing the best isn’t easy at all. You need to identify the essential features before making up your mind. Also, you’ve to decide which model and brand you’re going to buy from.

Best One-Piece Toilet Comparison Chart

ImagesOne Piece ToiletsWater ConsumptionFlush TypePrice Idea
Editor's Choice
Check Price
TOTO MS854114E#12 Eco Ultramax Elongated One Piece Toilet, Sedona Beige
Read Review
1.28 GPFSiphon Jet FlushingMedium

Budget-friendly Toilet
Check Today's Price
WoodBridge T-0008, Dual Flush Elongated One Piece Toilet with Soft Closing Seat, Comfort Height, Water Sense, High-Efficiency, Rectangle Button
Read Review
1.0 /1.6 GPF, average 1.28 GPFSiphon Jet, Dual FlushLow
Ultra-advanced Toilet
Check Today's Price
TOTO MS920CEMFG#01 G400 Washlet Toilet
Read Review
0.9/1.28 GPF3D Tornado Flush TechnologyHigh

Summary of content

Top 10 Best One Piece Toilet Reviews 2021

Here are the best one-piece toilets in 2021:

Toto MS854114E#12 Eco Ultramax Elongated One-piece Toilet

The first one-piece toilet to make it on our list is the Toto Eco Ultramax elongated bowl toilet. This toilet features a beautiful and simple design that will blend with most bathrooms easily. The Toto Eco Ultramax toilet is a high-efficiency unit that will help you to receive a lower water bill and conserve the environment. This toilet model would be a great option to replace your older one with a new toilet.

Technical Specifications of the TOTO Eco Ultramax ADA Elongated One Piece Toilet – MS854114ELG#12:

Features Toto Eco Ultramax 1-Piece
Installation Method: Floor Mounted one piece design
Weight: 75 pounds (28.5 x 14.5)
Warranty: One Year Limited Warranty
Bowl Rim Height: 16-1/2-Inch
Color/Finish: Sedona Beige
Pieces: One-Piece
Shape: Elongated toilet
Water Consumption: 1.28 gallons per flush
Material: Vitreous China
Seat Height: 17-Inch
Flush Type: Siphon Jet Flushing
Certification: Watersense
Price: TOTO MS854114E#12 Eco UltramaxCheck Today’s Price

The toilet features the E-Max flushing system, which is as powerful as the G-max flushing system. However, the E-Max flushing system is not very loud and uses only 1.28 GPF. Also, it comes with a 3-inch flush valve that is 125 percent larger than the conventional 2-inch flush valve.

Before you purchase this toilet, it is good to note that it comes with a standard height. Therefore, tall and disabled people may not have an easy time sitting down or standing up from the toilet. It is best suited for short people and kids.

Unlike most toilets, the Toto Eco Ultramax one-piece toilet features a soft-close seat that prevents slamming. It has a built-in hinge system that lowers the seat slowly and quietly, so your kids won’t hurt their fingers.

Equipped with the siphon jet flushing system, the Eco Ultramax one-piece toilet is very efficient in flushing. It will eliminate waste in a single flush. Also, the unit is comfortable as it comes with an elongated bowl for added comfort.

American Standard 2034.014.020 Champion 4 Right Height One-Piece Toilet

The American Standard Champion 4 is a lovely and powerful one-piece toilet. It is ideal for people who want a charming and efficient toilet with no clogs. One of the outstanding features of this unit is the 4-inch piston accelerator flush valve that pushes water into the bowl with greater force than the standard 2-inch flush valve. As a result, the toilet can clear waste in one flush.

Technical Specifications of the American Standard Champion-4 One-piece Right Height:

Features American Standard Champion-4 right height
Flush Type: Siphon Jet
Installation Method: Floor Mounted
Piece: One-Piece
Water Consumption: 1.6 gallons of water per flush
Material: Porcelain Toilets
Shape: Elongated
100% factory flush tested: Yes
Color: White
White finish: Yes
Size: 4
Comfort Height: Yes
Fully glazed: 2-3/8-inch fully-glazed trapway
Weight 119 pounds
Warranty: Limited 10-Year Warranty
Price: American Standard 2034.014.020 Champion 4Check Today’s Price

Additionally, the Champion 4 toilet boasts of a large, fully glazed 2-3/8-inch trapway that moves 40% larger mass than the standard trapway. Together with the large 4-inch piston flush valve, these make the toilet to be one of the most efficient on the market.

Besides, the new toilet is comfortable sitting on or standing up as it features an elongated comfort height. This is the same as the chair height. Also, it has the trip lever located on the left-hand side, which makes flushing simple even while seated.

With 1.6 gallons per flush, this toilet is water-efficient when compared to older toilet models that use 3.5 GPF or more. And with the EverClean surface, the toilet will remain clean most of the time as dirt, debris, and stains are kept at bay.

However, the toilet seat is not included; hence, you will have to buy it separately. Overall, this is an excellent toilet that any homeowner will love to have.

Woodbridge T-0008 Dual Flush Elongated One-Piece Toilet

Another quality one-piece toilet on the market is the Woodbridge dual flush toilet. This is a fantastic unit for people who want a luxurious and elegant toilet. The Woodbridge T-0008 one-piece toilet features a concealed trapway that hides the nooks and crannies. This makes cleaning the toilet easy and fast. Also, it makes the toilet look lovely, as it is streamlined.

Technical Specifications of the WoodBridge T-0008 Dual Flush Toilets:

Features Woodbridge T-0008
Material: Ceramic
Color: Pure White
Pieces: One Piece
Water Consumption: 1.0 GPF or 1.6 GPF, average at 1. 28 GPF
Finish: White Ceramic
Flush Type: Siphon Jet, Dual Flush
Shape: Elongated, Comfortable Height, Easy to clean shape
Included Components: Soft closing seat, Wax rings, and bolts
Warranty: 5-year limited warranty
Price: Woodbridge T-0001Check Today’s Price

The Woodbridge T-0008 has an elongated bowl with a Comfort height. Therefore, it will serve most adults and the elderly. Also, people with mobility issues will have a simple time sitting down or standing up from the toilet. If you need the best one-piece toilet with dual flush features, then buy this.

What’s more, the toilet is easy to clean and doesn’t have clogging problems. This is thanks to the effective flushing system that clears waste (liquids and solids) in one flush. The best part is that it is a dual flush system; thus, it gives the user the option of choosing a partial flush of 1.0 GPF or a full flush of 1.28 GPF. Because of this, it saves water and reduces water bills at the end of the year. Also, its powerful Siphon Jet flushing system clears solid waste with a single button press.

The manufacturer has included a soft-close toilet seat at such an affordable price, so no more banging of the toilet after you’ve finished your business. Also, the user will get a one-year warranty.

Toto MS604114CEFG#01 Ultramax II Elongated One-Piece Toilet

The Toto Ultramax II elongated one-piece ADA-compliant toilet is ideal for installing in public restrooms and at home. The sleek and lovely design will instantly change the look of your modern bathroom. The manufacturer also offers different colors to choose from, such as cotton white, ebony, colonial white, Sedona beige, and bone. Pick a color that complements your bathroom theme.

Technical Specifications of the Toto MS604114CEFG#01 UltraMax II One-Piece Elongated 1.28 GPF:

Features Toto UltraMax II 1.28 toilet
Water Consumption: 1.28 gallons of water per full flush
Piece: One-Piece
Material: Vitreous China
Shape: Elongated
Color: Cotton White
Flush Type: Toto Tornado Flush system
Installation Method: Floor Mounted
Universal Height Standard: Yes
SanaGloss finish: Yes
Weight: 99 pounds
Seat: Include SoftClose seat
Warranty : One Year Limited Warranty
Certification: ADA, WaterSense, CALGreen, and CEC compliant
Dimensions: 35 x 33 x 23 inches
Price: Toto MS604114CEFG#01 Ultramax IICheck Today’s Price

Moreover, the Toto Ultramax II toilet is very comfortable to use as it has a universal height. This means that different people will have ample time to use the toilet. Also, the elongated toilet bowl ensures that there is more sitting space; thus, it is more comfortable when compared to a round bowl toilet.  The good news is that you won’t go around looking for a toilet seat as it is included. The soft-close seat doesn’t slam as it closes slowly and quietly. Also, the toilet comes with a super-smooth SanaGloss glaze and a quiet flush mechanism.

What we like most about this toilet is the ease of cleaning. Since it has Cefiontect glaze, dirt and other debris won’t stick on the toilet surface. As a result, you won’t be required to clean the toilet after every use. Additionally, the toilet has a powerful and effective tornado flushing system. This is an efficient flushing system as it uses 1.28 gallons of water per flush.

Regardless of the state that you come from, you will be able to install this toilet as it meets most of the required standards.

Kohler K-4007-0 San Souci Best One-Piece Toilet for small bathroom

Kohler is another top brand with high-quality toilets. The Kohler K-4007-0 San Souci one-piece toilet is a uniquely designed toilet that will add style and vigor to your bathroom. This is a low-profile toilet with a toilet bowl and tank that integrates perfectly to give you a modern look.

Technical Features of the KOHLER San Souci White WaterSense Round Standard Height:

Features Kohler San Souci K-4007-0
Color: White
Low-profile design: Yes
Material: Vitreous China
Shape: Round
Water Consumption: 1.28 GPF
Piece: 1-Piece
Dimensions: 25.6 x 16.8 x 24.2 inches
Installation Method: Floor mounted
Flush Technology: Gravity-fed
Weight: 92 pounds
Flush Type: Single
Flush Lever Location: Left side
Warranty : 1-year limited
Certification: EPA Approved
Price: Kohler K-4007-0 San SouciCheck Today’s Price

Furthermore, the toilet has a small round bowl that takes up less space, making it suitable for powder rooms and compact bathrooms.  Also, it has a chair height, which means that it will accommodate most adults. However, some people may find the round bowl to be uncomfortable. You can also choose Kohler 3810-0 Santa Rosa toilet model which also requires a small space to install.

Another exciting feature of this toilet is the AquaPiston gravity flush system. The AquaPiston canister releases water from all corners of the bowl, leaving the toilet clean after every flush. What’s more, it conserves water as it uses only 1.28 gallons per full flush. So, it is a high-efficiency toilet. One-piece toilets are easy to install and require small space.

The quiet-close lid and seat that are included in the purchase make installation easy and fast. Moreover, the seat comes with quick-release hinges that make cleaning around the toilet seat simple.

Overall, the Kohler San Souci is an outstanding toilet for people who want an elegant and efficient toilet in their small bathroom.

Toto MS920CEMFG#01 G400 Washlet

If luxury is what you’re looking for, then you will be happy to install the Toto Washlet G400 one-piece toilet. Even though this toilet doesn’t come cheap, it has exceptional features that will change your toilet experience. The Washlet G400 is a tankless toilet, which means that it uses water directly from the supply line.

Technical Specifications of the Toto Washlet G400 Toilet:

Features Toto G400
Wand cleaning mode: Yes(self-cleaning)
Shape: Elongated
Power Source: corded-electric
Water Consumption: 1.28 GPF/0.9 gallon water
Pieces: One-Piece
Dual flush: Yes
Flushing System: 3D Tornado Flush
Glaze: Yes(CeFiONtect ceramic)
Heated Seat Option: Yes(Heated seat with temperature control)
Auto open/close lid: Yes
Automatic PreMist sprays: Yes(helps prevent waste from adhering)
Air Deodorizer: Yes
Material: Ceramic
Dryer function: Yes
User memory: Yes(2 User)
Color: Cotton White
Remote control operation: Yes(Front and rear warm water washing + Temperature and adjustable pressure control)
Certification: ADA compliant, WaterSense certified, CAL Green compliant
Seat sensor: Yes
Size: Large – LTL
Price: Toto MS920CEMFG#01 G400Check Today’s Price

Additionally, the toilet comes with lots of advanced functions that offer comfort to all users. It has a remote control for accessing different features, such as a self-cleaning wand that cleans your nether area. The cleaning wand gives the user various functions such as rear wash and front wash. You will get other vital features: an air deodorizer, warm air dryer, heated seat, water temperature settings, automatic open and close, seat sensor. G400 is one of the best one-piece toilets for the modern bathroom.

Even with all of these features, the G400 one-piece models are still efficient in eliminating waste. It has a powerful dual max 3D tornado flush system that clears waste in one flush. On top of that, it is water-efficient with the dual flush system as it uses less than 1.28 GPF. For liquid waste, it only uses half water that reduces lots of water bill anually.

Apart from that, the toilet is straightforward to maintain as it comes with Cefiontect glaze and Premist functions that prevent poop and stains from sticking to the toilet surface. As a result, the cleaning time is reduced.

America Standard 2004314.020 Champion 4 Elongated One-Piece Toilet

This is another exceptional American Standard Champion 4 one-piece toilet. But unlike the American Standard Champion 4 toilet that we discussed earlier, this unit comes with a standard height instead of a right height. Therefore, it is more suited for kids and shorter people.

Technical Specifications of the American Standard Champion-4 with Toilet Seat, Normal Height:

Features American Standard 2004314.020
Flush Type: Siphon Jet
Installation Method: Floor Mounted
Piece: One-Piece
Water Consumption: 1.6 gallons per flush
Material: Vitreous China
Shape: Elongated/Round toilet
Certification: Watersense certified frustration-free
Color: White
White finish: Yes
Size: Normal Height
Included: Slow close toilet seat
Dimensions: 17.8 x 29.8 x 28.5 inches
Weight 118 pounds
Warranty: Limited 10-Year Warranty
Price: America Standard 2004314.020 Champion 4Check Today’s Price

The American Standard Champion 4 one-piece toilet features the champion 4 flushing system, which is one of the best in the industry. The champion 4 flushing system is very efficient in performance and moves 70 percent larger mass than standard toilets. So, things like clogging will be a thing of the past when you install this toilet in your bathroom.

What’s more surprising, the toilet has a powerful flushing system that uses only 1.6 GPF to get rid of poop and other debris in the toilet. Furthermore, it has an EverClean surface that prohibits the growth of odor-causing bacteria and mold. Therefore, you won’t have to clean the toilet daily. This means that pollution will be reduced as harsh chemicals will not be used frequently.

Unlike the Champion 4 right height toilet that we looked at, this unit comes with a soft-close toilet seat. This means that you can install the toilet right away, and you don’t have to look for a toilet seat. Also, the seat is quiet and doesn’t slam.

Swiss Madison Well Made Forever SM-1T254 ST. Tropez One-Piece Toilet

If you want to be different but still get a quality and luxurious toilet, then the Swiss Madison Well Made Forever SM-1T254 ST. Tropez one-piece toilet is a fantastic choice. The toilet is uniquely designed with a slim tank and a skirted design. As a result, it can blend with any modern bathroom décor.

Technical Specifications of the Swiss Madison SM-1T254 St. Tropez Toilet:

Features Swiss Madison SM-1T254
Water Consumption: 0.8/1.28 GPF
Pieces: One-Piece Toilet
Flush Technology: Dual Tornado Flush
Special Features: Comfort Height
Shape: Elongated
Material: Ceramic
Certification: Watersense
Warranty: 1-year limited warranty
Price: Swiss Madison Well Made ForeverCheck Today’s Price On Amazon

On top of that, the unit has a soft-close toilet seat, which means that you won’t be slamming your toilet. Therefore, the toilet seat will last longer, and you won’t hurt your fingers as it closes slowly. The skirted design not only makes the toilet look beautiful but as well as be simple to clean.

The modern Swiss Madison Well-Made Forever St. Tropez is comfortable to sit on as it has a Comfort elongated bowl design. This is the recommended height by ADA; thus, many people will enjoy sitting down or standing up from the toilet. What’s more, the toilet I straightforward to install as it is floor mounted. Also, bolt caps, a toilet seat, and a wax ring are included in the package.

When it comes to getting rid of waste in the toilet, you have nothing to worry about, as the powerful tornado flush system will do a great job. Aside from that, you will have the option of selecting either the [atrial 0.8 GPF or the full 1.28 GPF.

Galba Small Mini Compact One-Piece Toilet

For those with a limited room in their bathroom, the Galba small mini compact one-piece toilet will be ideal. Even though it is compact in design, the Galba small toilet still performs at a high level. Besides, it has a dual flush system that does a beautiful job of eliminating waste quickly, using only 0.8 GPF or 1.6 GPF. The first flush is for liquids, while the second flush is for solids.

Technical Features of the GALBA Small Toilet Short Compact Bathroom:

Features Galba Small Toilet
Color: White
Rough-in: 12″
Flush Type: Dual Siphonic Flush
Shape: Elongated
Material: Plastic
Dimensions: 24.5 x 14 x 27 inches
Comfort Height: 16.5″
Piece: 1-Piece
 UPC and MaP flush score : 300
Included: Slow closing nesting toilet seat (plastic)
Weight: 90 pounds

Additionally, this commode is beautifully constructed as it has a skirted modern design that hides all the ugly corners and makes cleaning simple. Besides, you will marvel at how comfortable this toilet is with its elongated toilet bowl design. Many people are used to compact toilets having round bowl designs, but this is not the case with this unit. Galba is one of the best one-piece toilets for small bathrooms.

So, if you have an elderly person or even one with mobility problems, they will still find this toilet comfortable. Thanks to its chair height seating position and elongated bowl design. The only challenge that you’re likely to face when using this toilet is that the dual siphonic flush is not very powerful. With a MaP score rating of 300, this is not a toilet that you want for a busy bathroom. It doesn’t matter if it’s at home or in the office; it lacks the power to clear large masses.

Toto MW644584CEFG#01 Washlet+ Carolina II One-Piece Toilet

Last but not least, we’ve got the Toto Washlet+ Carolina toilet. This is one of the most popular luxurious one-piece toilets on the market. The toilet comes with a washlet S350e bidet seat that delivers comfort to users. The Toto Carolina II one-piece toilet is highly advanced and will make your toilet experience memorable.

Technical Features of the TOTO WASHLET+ Carolina II One-Piece Elongated 1.28 GPF:

Features TOTO MW644584CEFG#01 Carolina ii
Shape: Elongated
Bowl Height: Chair height
Dimensions: 28.3 x 17.5 x 25.6 inches
Certification: Watersense
Warranty: One Year Limited Warranty
Material: Vitreous china
Color: Cotton
Water Consumption: 1.28 gallons per flush
Piece: 2-piece
Style: With S350e WASHLET+
Installation Method: Floor mounted
Flush Technology: Power Flush Toilets
Weight: 102 pounds
Flush Lever Location: Left side

The toilet is made of vitreous china and has an integrated pre-installed seat. The unit comes with a skirted design that makes cleaning fast and straightforward. Besides, it is easy to keep clean as it comes with several features that help to facilitate cleanliness. These include the Cefiontect glaze, Premist, Ewater+, and tornado flush.

Apart from that, the toilet features a heated seat to keep you warm during cold mornings and in the winter season. Also, it is very hygienic as it features a cleaning wand that keeps you clean after relieving yourself. So, you don’t need to use tissue paper, which will save trees in the long run.

The Toto Carolina II one-piece is also easy to sit on or stand up as it has an elongated bowl and universal height. So, no matter your height or body size, you will be comfortable using this toilet. Unlike some toilets that don’t feature a soft-close seat, this toilet comes with one. Also, the seat opens and closes automatically as you approach the toilet.

All in all, this is a quality and luxurious toilet that will change the look of any modern bathroom. However, it is quite expensive.

A quality one-piece toilet should match your needs and demands. In the list above, we included only the best one-piece toilets that you can lay your hands on. We truly understand that people have different needs, and that’s why we included different types of one-piece toilets from different manufacturers.

Depending on your taste, preference, and budget, you will definitely find a toilet with all the features you desire. The best one-piece toilet for your bathroom should have the right height, bowl design, flushing system, and it should blend effortlessly with your bathroom décor. I hope this Best One Piece Toilet reviews article has given you a clear idea about this kind of toilet.


Question: What’s the difference between one-piece and two-piece toilets?
Answer: Two-piece toilets are standard in old bathrooms. One-piece toilets are the latest technology in the market, but many people have started to embrace them. A two-piece toilet has the tank and bowl separate that are adjoined during installation. On the other hand, one-piece toilets feature tanks and bowls that are integrated into one unit. Because of this, one-piece toilets are simple to install and clean.

Since one-piece toilets don’t have a gap between the tank and bowl, they are easy to clean and stay clean for longer. But with two-piece toilets, the coupling between the tank and bowl forms a breeding place for mold, mildew, and odor-causing bacteria.

When it comes to the replacement of parts, two-piece toilets are the best as you can replace the tank or bowl when it cracks, but this is not the same for one-piece toilets. However, one-piece toilets look elegant and sleek, which makes them more appealing for modern bathrooms.

Question: What features should I consider when selecting a toilet?
Answer: Buying a new toilet is quite confusing as there are lots of brands and models available on the market. Before you jump to any toilet, you’ve to consider lots of factors to land the best toilet available for your needs and budget. These include the type of toilet, water usage rate, design of the toilet, type of bowl, durability, the height of the toilet, ease of cleaning, ease of installation, and the type of flushing system.

It is essential to know the features that you want so that you can get the best toilet possible. Some come with regular seats and other soft-closing or even bidet seats. Also, it would help if you chose the right height as not all toilets will be comfortable sitting on or standing up. The most important feature of any toilet is flushing power. A quality toilet should have a powerful flushing system so that waste is eliminated with much ease.

Question: What is the importance of having a concealed trapway?
Answer: A toilet with a concealed trapway is very convenient as it makes cleaning easy. The concealed trapway also referred to as the skirted design, hides the nooks and crannies that most standard toilets feature. These make cleaning cumbersome as they tend to hide dirt.

Apart from that, a skirted style makes the toilet look beautiful and gives your toilet a modern appeal. That’s one of the reasons why people are embracing the skirted toilet.

Still have questions after reading this Best One-Piece Toilet reviews? Comment below.


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