One-Piece vs Two-Piece Toilets: Which One Is Better?

Deborah Beams
Deborah Beams
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Charles Eggleston
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Last updated: August 16, 2023
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Toilets Trusted Source 5 Ways Toilets Change the World | Live Science Bathroom facilities serve a host of vital functions, from keeping humans healthy to removing barriers to education. are crucial parts of any home.

These structures are integral to better living and must be set up correctly.

Whether your primary intention is to reconstruct your existing toilet or place it in a new one, there are several options in the market you will want to consider.

Toilets are diverse in many aspects. For instance, they come in many shapes and sizes. Furthermore, toilet designs are unique in the market; every style comes with its own advantages and disadvantages.

There are two types of toilets: a one-piece and a two-piece. When comparing a one-piece vs. two-piece toilet, there are specific elements you ought to inspect.

These structures may look similar but are quite different. The styling in each is unique in its own way.

The most common element that separates them is the position of the tank with respect to the seat. However, both toilets function well and are suitable for replacing or installing new structures.

Well, it is still vital to know the difference and avoid confusion when determining which toilet best fits your needs. And in this guide, we will walk you through each one of them.

What is a One-Piece Toilet?

One-Piece vs Two-Piece Toilets: Which One Is Better?

A one-piece toilet has its tank directly connected to the main bowl.

Notably, this style is a full unit. One-piece toilets have a compact height. Therefore, they offer the best experience to those who prefer comfortable height toilets.

You might hear about them when comparing toilet bowl chair height vs. standard toilets. Furthermore, the toilets have a sleek design. They complement bathrooms and offer a pleasant view of the space around them.

These designs are preferred by homeowners who are obsessed with making every corner of their homes look lavish.

According to most reviews on Amazon, the best one-piece toilet is the Toto UltraMax II. The structure has high efficiency, universal height, and comes with a SoftClose.

What is a Two-Piece Toilet?

One-Piece vs Two-Piece Toilets: Which One Is Better?

On the other hand, a two-piece toilet is a model which has a separate bowl and tank.

These toilets are attached using bolts and are the most common types of toilets in the United States.

It is worth noting that you should know a little about how to attach the bolts and gaskets once you own these toilets.

Experts recommend the TOTO Drake. This is because the toilet is designed from double cyclone technology, which makes it powerful, and offers a wide surface.

One-Piece vs. Two-Piece Toilet: Comparison

One-piece toilets have slight differences from two-piece toilets.

These toilets offer the same functionalities but are primarily separated by the designs.

The difference between a one-piece vs. a two-piece toilet often goes unnoticed as a good percentage of people walk into stores and purchase the first product they come across without the necessary knowledge.

Understanding the one-piece toilet vs two-piece toilet before purchasing is vital to having the toilet you are looking for.

The Kohler two-piece toilet is among the most common designs in the market. Therefore, you might look into the Kohler two-piece vs. one-piece toilet to comprehend the wide variety of toilets in the market.

The two types differ in size, weight, appearance, ease of installation, among other elements as discussed.

One-Piece vs Two-Piece Toilets: Which One Is Better?


One-piece toilets have different sizes from two-piece toilets.

The concept is usually misunderstood as the sizes are somewhat similar. Both toilets come in different sizes that are distinguishable if you pay attention to detail.

One-piece models take little space in bathrooms. That’s why most people use it in small bathrooms.

The primary contributing factor is their design. These toilets are compact hence fit into tight areas. The fact that the bowl and tank are fitted together majorly contributes to that.

On the other hand, two-piece toilets are standard in height. These toilets also come in different sizes to fit bathrooms.


One-piece toilets are much heavier than two-piece toilets. Since the tank and bowl are joined together, it is difficult to separate them. This factor contributes to their heavyweight.

One-piece toilets weigh approximately forty kilograms. Moving these toilets is difficult, and the shipping costs are generally higher than two-piece toilets.

Two-piece toilets are much lighter. Their parts can be separated and transported in parts. These designs weigh about twenty-five kilograms.


The one-piece and two-piece toilets come in various styles.

Notably, one-piece designs are sleek. Therefore, the design is mostly preferred when it comes to appearance. This design is continuous and lacks a gap between the body and the tank, making it look professional.

Experts add that these designs are also preferred in contemporary bathrooms due to their sleekness. Some people consider it luxurious.

Overall, two-piece toilets have a traditional design. They lack a stylish design as with one-piece toilets. However, some two-piece toilets in the market are modernized.

Ease of Installation

One-piece and two-piece toilets have their benefits as far as installation is concerned.

The installation process might be the same for both toilets; however, installing one-piece toilets takes time and a considerable amount of effort. It might be challenging getting the toilet in the right position. Furthermore, maneuvering and moving the one-piece toilet is a skillful process that takes time to learn.

Should you want a toilet with fewer technicalities in the installation process, then two-piece toilets are best. Since the two-piece toilets are separable, you can move and maneuver the toilet during installation. However, these toilets involve two steps during installation: the second step is bolting the parts together.

Functionality and Efficiency

There is really no difference between the functionalities of one-piece toilets and two-piece toilets.

These toilets have similar flushing power, enough to dispose of waste appropriately.

Their efficiency is almost similar as they do the flushing in the same manner. Manufacturers design their products in a similar fashion. Hence, the interior parts of both toilets may be identical in some cases.

Furthermore, the toilets may have the same specifications and features to offer the most suitable experience in bathrooms.

Cleaning and Maintenance

Cleaning the one-piece toilet is easier as it lacks gaps between the tank and the bowl. They are also hygienic since the toilets have limited spacing to accommodate dirt and grime. Therefore, most homeowners prefer using one-piece toilets to maintain healthy standards in their homes.

On the other hand, the two-piece toilet can be difficult to clean since it has multiple spaces. Cleaning it is quite challenging with the tank intact. Furthermore, the toilet can leak if you don’t install it properly.


One-piece toilets cost more than two-piece toilets. These designs are stylish and are more durable. Considering that the resources used in manufacturing the product are expensive, the toilet must be set at a higher price than its counterpart.

Furthermore, one-piece toilets have a higher shipping cost due to their heavyweight. So, consider the two-piece toilet should you be looking to save extra in purchasing a toilet.

One-Piece Toilets: Pros and Cons

Like other structures, one-piece toilets come with pros and cons.

When comparing the pros and cons of one-piece vs. two-piece toilets, you should be extremely vigilant to take advantage of the market and secure the best product.

One-piece toilets are quite advantageous in the end. However, there are cons you ought to consider before purchasing. Setting these toilets in your bathroom is best once you know what to expect. Let’s review them quickly.


– One-piece toilets have a sleek design, the stylish type of toilet.

– The toilets are easy to clean.

– They offer faster installation than two-piece toilets.

– They come at a comfortable height.

– These toilets are more durable. The chances of them breaking or leaking is minimal.

– They offer a compact height.

– They have convenient flushing and save water.


– One-piece toilets are more expensive than ordinary toilets.

– They are heavy considering that you cannot separate the tank and the bowl.

– These products are difficult to ship or transport locally due to their weight.

– They offer very few rough-in options.

Two-Piece Toilets: Pros and Cons

Two-piece toilets are the best sets of toilets for the average consumer. These toilets are convenient for traditional homes and can be fitted in bathrooms according to individual preferences. Two-piece toilets are best to start with since they may be more available than one-piece toilets. However, you will need to be as careful when choosing these types of toilets as with other types. Two-piece toilets present a wide range of advantages and disadvantages that must be considered before, during, and after installation.

Let’s review the pros and cons of two-piece toilets.


– These toilets cost less.

– They have more options for styling and height.

– They are lighter; hence, easy to ship.

– You have the option of mixing and matching the bowl and tank according to your preference.

– Small pieces can easily be fitted.

– They also offer flushing and water-saving options.


– They are tall and less compact.

– Installing these toilets takes time.

– These toilets break and leak easily.

Final Thoughts

Choosing the right type of toilets for your home is crucial.

While doing so, you must sufficiently compare the one-piece vs. two-piece toilet and settle after understanding the difference.

Remember, one-piece toilets come in one piece, as the name suggests. On the other hand, two-piece toilets come in two separate parts.

There are several options available out there. Also, you’ll have to consider some factors when comparing these two types of toilets. They come in different sizes, weights, and appearances. But the most distinguishing factor that separates the two types of toilets is the appearance.

The toilets also differ in terms of installation procedures and pricing. Two-piece toilets are more affordable and may fit your budget.

Also, look into each type of toilet’s pros and cons to know what you are settling for.


5 Ways Toilets Change the World | Live Science
Bathroom facilities serve a host of vital functions, from keeping humans healthy to removing barriers to education.
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