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Find the best one piece toilets of 2024

There are a number of reasons to choose a one piece toilet over their two piece counterparts. Reducing the footprint is certainly an incentive if you have a smaller sized bathroom. Not only that, but they tend to come with more unique designs that are simple to maintain.

The aim of the guide below is to give consumers more knowledge about the various brands, features, and specifications available. By looking at these things, we can pick out several toilets that we recommend, and assign a rating to each, based on a pre set criteria.

Top rated products

Image Product Flush GPF Bowl Rating? Review
HET 1.28 Elongated 90% Here
Gravity 1.6 Elongated 88% Here
HET 1.28 Elongated 87% Here
HET 1.28 Elongated 86% Here


TOTO MS604114CEFG#01 Ultramax II

TOTO have a good reputation in this industry, not just with toilets, but also several other bathroom accessories. Throughout our research process, we consitently found products manufactured by them that have been highly rated by customers on various online shops. The MS604114CEFG#01 is one of those products.

The first thing we noticed about it within the specs is its efficiency. This unit is WaterSense compliant as outlined by the environmental protection agency. Operating on a double cyclone mechanism, it will push just 1.28 gallons through the bowl, ensuring users make saving on their water bills.

The bowl is elongated and offers what's known as universal height seating, which is essentially a rim that is taller and easier to sit down and stand up on for accessibility purposes.

A little bit pricier than some of its competitors, but the feedback around the web speaks for itself.

American Standard 2034314.020 Champion 4

This is a product from the Champion 4 range of American standard. We picked this unit for a number of reasons.

Right height seating is built into the design, with a rim height of sixteen and a half inches. This makes it compliant with ADA criteria. Couple this with the elongated shape bowl and you have the formula for accessibility and comfort rolled into one.

A siphonic action flush that utilizes 1.6 gallons of water, combines with its EverClean surface to keep the bowl in a hygienic condition and effectively remove waste through the outlet.

The extras companies tend to place on their products can significantly raise the price tag. Especially when it comes to seating, or lack of. This particular model doesn't have this problem however. It includes a slow close toilet seat that is perfect for buyers wanting to reduce slamming and keep a quiet, and relaxing home.

In summary, this is a decent looking loo, which has plenty of solid features and specs.

KOHLER K-5172-0 San Souci

If you've already read our buying guide about this brand in detail, you will know that we hold them in high regard. Not just because they are a big name, but because from what we've found scouring the web, many of their products have received decent feedback.

In the case of this option from the San Souci range, there isnt a huge number of reviews that we came across. However, it made our list nonetheless thanks to some solid features, and keeping to a simple, clean theme, that will compliment many modern bathrooms.

Similar to its competitors above, this is also a comfort height model, which will ultimately make it feel like you're in a chair like position, which is more natural to the body.

1.28 GPF is pushed through AquaPiston flushing technology to create an effective flush for the bulk removal of waste. This is operated via the trip lever located on the left hand side. AquaPiston tech ensures water gets let in from all sides to leave a cleaner bowl after use.

Overall, it looks great and will work well in a residential setting.

Duravit 2157010085 Durastyle

For a more contemporary take on your toilet, why not consider the Durastyle range from Duravit. The smooth edges, which conceals the trapway reduces the amount of exposed material ensuring there is less chance to cause damage to it, and that there is a simplicity to cleaning it.

It operates on a single flushing system that utilizes siphonic jet action and 1.28 gallon of water to push waste out.

It's floor mounted, made from ceramic, and finished in white that will bring a touch of elegance to the room.

Compared to the competition, it's not particularly expensive, which is always a plus point. However, there isn't a lot of consumer feedback surrounding it online. So use the tips in this guide, written to help you make the right decision.

Comparison table

TOTO MS604114CEFG#01 Ultramax II American Standard 2034314.020 Champion 4 KOHLER K-5172-0 San Souci Duravit 2157010085 Durastyle
Flush HET Gravity HET HET
GPF 1.28 1.6 1.28 1.28
Bowl Elongated Elongated Elongated Elongated
Comfort height
Color Cotton White White White White
Dimensions 28.3 x 16.6 x 28.8" 17.8 x 29.8 x 29.5" 30.2 x 20.9 x 26.8" 14 5/8" x 28 3/8"
Weight 99 lbs 118 lbs 94 lbs 121.2 lbs
Rating 90% 88% 87% 86%

Advantages versus two piece units

Installation - Less parts generally means the installation process is less time consuming too.

Design - You could argue that because they have clean edges, they look more contemporary, which is good news for someone style conscious and looking to modernize the lavatory.

Size - They are usually quite a bit smaller, making them a sensible choice for many smaller bathrooms, or even secondary ones.

Cleaning - Many come equipped with a skirted bowl which covers many of the traditional gaps that you find in standard models. Dust, dirt, and bacteria can and will gather in those gaps, making them extremely difficult to clean. Generally, they come with a smoother surface, which becomes a good solution for this.

Maintenance - Because they are made from a single piece of material, there tends to be less mechanisms and pipelines exposed. This can limit the amount of damage done from external elements, which in turn, improves overall durability.


Price - The downside of all the ways it can benefit you, is you can expect to pay a fair amount more than two piece models. Typically in the range of a $100 - $300 increase, depending on a number of factors.

Other considerations before you buy

Bowl - You're undoubtedly going to need to choose what bowl shape fits your requirements. There are two main shapes you're going to find whilst looking online, and those are round and elongated. Round is generally to go to option for people looking to save space, and elongated tends to be the shape growing in popularity thanks to it offering a more natural, comfortable seated position.

Flush type - You will of no doubt heard of the various flush mechanisms available on the market. You will need to make the decision of what best suits your households needs. Be it no touch sensors, upflowing, or two separate power levels, there is something for everyone.

Water usage - Two main flow rates to consider here. The first is the standard 1.6 gallons. These can produce a high power flush and offer superior bulk waste performance. The second is low water consumption options that typically start at 1.28 gpf, but can go much lower. They are designed to be much more economically and environmentally friendly.

The seat - Check to see if the toilet seat comes included. Sometimes it does, othertimes it doesn't. Be wary of additional expenses like this as it will all add up.

Rough in - Find out what your rough in size is. The size can vary between 10, 12, and 14 inches usually, but the last thing you want is a loo that leaves too much space behind the tank, or worse still, doesn't fit at all.

Wrapping up

Picking a one piece toilet certainly has its advantages over its two piece counterpart. The key is to find a product that will work well in your homes set up. What works for some, isn't always the solution for others. That's why it's important to read through our recommendations and research above to form your own opinion on the matter. We've listed several that we feel are solid options, but make sure you shop around online before you buy anything and look into what customers are saying about it.