One-Piece Vs Two-Piece Toilet

For some people, it is a surprising fact that the toilets are of two different types. In this article, we will learn about the two main types, which are one-piece vs two-piece toilets. By learning about the difference between them, you will be able to pick up the right one.

Before considering the differences between these two types of toilets, let us learn their basic definitions to develop a basic understanding of them.

One-Piece Toilet

A one-piece toilet is also called a single-piece toilet. There are no joints in it because the tank and the toilet are fused together in one piece.

Two-Piece Toilet

If the toilet and tank are separate from each other and require joints to put them together, it is known as a two-piece toilet. These are also known as coupled toilets.

One-Piece Vs Two-Piece Toilet Differences

Given below is the list of differences between one-piece and two-piece toilets:


The two-piece toilet has detachable parts. You can remove them and replace them with new ones if you like. Other than this, the height is also adjustable according to the requirements, so the design is quite suitable for those who need such customizable functions. Its tank and bowl are also attached separately.

Unlike the two-piece toilets, the one-piece toilet does not have separate parts. It comes in one heavy piece. Also, there is no adjustment option for the height, and very few style options are available. It is strictly made in one way, and that does not allow much innovation in the overall design of the toilet.

Overall Cost

The cost range of most of the one-piece toilets is between 300 to 600 dollars. However, the two-piece costs around 350 dollars on average. The cost range may vary from the type of company and the material they use to make the one-piece vs two-piece toilets.

This means that depending on your personal preferences, and the type you would like to buy, the cost can vary from one extreme to another. You can choose according to your budget and requirements. One person buying a one-piece toilet for under 1000 dollars could buy many times expensive one only if the company preference and chosen material changes.


The weight of a one-piece toilet is usually more than the two-piece toilet. Everything is combined into one bigger part; therefore, its weight is more. However, the two-piece one has separate parts that make it lightweight. So, if you prefer a more sophisticated and easier to use option, it is always better to opt for the two-piece toilet. The one-piece is ideal to use in public toilets or office spaces where you are not personally using it. Two-piece should be installed in your home for comfort and luxury.

Availability of Options

Many people like to use toilets that do not have a lid. Rather they like bidet attachment that is more hygienic than the other. Also, it is a better option than using toilet paper. So, there are options available for both one-piece vs two-piece toilets.

Again, the cost might vary according to the material and quality you like for it. Usually, it is seen that this replacement costs more in the case of the two-piece toilet and a little lesser for a one-piece toilet. Moreover, such options are easily available for the two-piece than for the one-piece toilets.


The process of installation in both toilets takes almost the same amount of effort and energy. However, the steps could be different. In the case of a two-piece toilet, it would be easy to move it and maneuver, but you have to tighten bolts and nuts to fix it. While the one-piece toilet might be hard to move around, you can instantly install it without putting a lot of effort into it.

Overall, in both cases, you have to fix the wax ring and evenly distribute the weight while fixing them. Also, sealing of the water pipe at the bottom is done in a similar way in both cases. In the end, both are checked for any possible leaks by filling the seat with water. Both take about an hour for the whole fixation process.

Regular Maintenance

The maintenance of the one-piece toilet is easier than the two-piece one because it gives less space for bacterial accumulation. Thus, you do not need to clean it too much. However, the case of a two-piece toilet is different because there are few spaces where bacteria get trapped and need regular cleaning. Some experts even recommend daily cleaning of two-piece toilets. It also depends on the frequency of its use, so you can decide what is best for maintaining it properly.

Power and Efficiency

The one-piece vs two-piece toilet power and efficiency comparison shows that both come in a wide range of technologies. From flappers to towers, there is so much variation in power and efficiency within one type of toilet. Both types are found in high and low flow versions. This means that you can use less than one gallon of water per flush to any amount that is suitable for your needs.


In case of durability, the one-piece toilets show more strength than the two-piece toilet. There are chances that the tank or bowl of two-piece will crack more quickly than the one piece. Also, the two pieces are likely to uncouple rather than one piece. The rubber gasket between the two pieces may also degrade and the toilet starts to leak after some time of regular use.

As the one-piece toilet does not have separate pieces and it is permanently fixed. The chances of any breakage are the least. Also, there is no tension of parts uncoupling due to regular use. However, if there is a china crack in such toilets, you have to replace the complete toilet. But in the other case, you have to bring the cracked part only.

Resale Value

The resale value of both one-piece and two-piece toilets does not depend on the design, style, or structure. It is just the properly functioning toilet that is the ideal home and resale value. It is very important that the toilet is working, easy to maintain, and durable.

You might also wonder about the appearance as well. But that factor is also not of great value when it comes to the resale value of both toilets. The two-piece can look sleek and contemporary, but if the functioning is not up to the mark, it is of no resale value. In comparison, if the old and broad-looking one-toilet is properly working, it has all the home value of the user or buyer.


A toilet is an important part of the bathroom that you have to use multiple times a day. It should be comfortable to use, and easy to maintain. These characteristics of one-piece vs two-piece toilets are similar. However, you have to choose the style, weight, design, material, and functions according to your budget and requirements. With a limited budget, you can go for a good option in one-piece toilets. If the budget is not a problem, then choose the two-piece which is the best option.

Leave a Comment