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One Piece vs Two Piece Toilet – A Comparison Review
One-Piece Good But Two-Piece Isn't Necessarily Bad
When a one-piece and a two-piece toilet are placed side by side, which will you choose? Without getting into the cost and features, the one-piece is always the winner.
Why is that so?
Looks are everything. Yes, the one-piece toilet is better in appearance; it has a modern feel. That’s why.
But that is hardly the case for the pragmatic toilet hunters. Appearance may be the last thing on their list, they see beyond looks, sometimes even beyond cost. They see only benefits and value for their hard earn money.
So what are the benefits and value between the two?
It will depend on how you prioritize your needs and which one benefits you the most.
Both designs have their drawbacks even though they may have the same performance level. So understanding the pros and cons will help you decide on a toilet that’s right for your home and your budget.
In a hurry? You may skip straight to the summary.
Difference In Construction
It’s easy to differentiate between the two design with their construction.
The common two-piece toilet consists of a separate tank and bowl whereas the one-piece toilet will have the tank molded with the bowl as one whole unit.
You can tell the difference by looking at the joint between the tank and the bowl. A clear seam is visible on the two-piece toilet, and there’s none for the one-piece toilet.
What are the advantages and disadvantages of the two constructions?
The main advantage of the two-piece design is you can replace the tank and bowl separately. If the tank is broken, you will need to replace the tank, likewise for the bowl.But if you broke either part of a one-piece toilet, you will need to replace the whole toilet. Perhaps, this is the only drawback of the one-piece toilet, besides cost.
And since the tank is fused with the bowl, there is no need to make provision to support the tank. That's where some space can be saved and make the overall construction more compact, which explains why most of the space saver toilets are of the one-piece design.
However, for a siphonic toilet, there is a physical limit to the bowl length, unlike the washdown design.
Besides looking great, the one-piece toilet is very easy to clean and maintain. That's the best advantage above all.
Keeping The Toilet Clean
The one-piece toilet is easier to clean because there is no gaps or joint between the toilet tank and the bowl. And its a lot more hygienic since there is no place for dirt and grime to gather. Most people choose one-piece design mainly for this reason.
The joint area of the two-piece toilet can be a breeding ground for mold and bacteria if left unclean over time. And it is difficult to clean the area thoroughly without removing the tank. Besides, there is the risk of leaks between the tank and bowl if the tank is not installed back properly.
Which performs better? One-piece or two-piece toilet.
Performance-wise, there is no difference between the one-piece and two-piece toilets.
They can have the same flushing power and efficiency. The interior parts are almost identical if they are from the same manufacturer. They may even have the same features and specifications.
So whether you prefer comfort height or water-saving feature or compact toilets, you can find in both one-piece and two-piece toilets.
Installation – One-Piece vs. Two-Piece Toilet
The one-piece toilet can be a challenge to install due to its size and weight. And it can be tricky when you have a small space. Strong arms and a good back will make an easy install; otherwise getting help is not an option.
But once you get the toilet into position, the installation is almost done. The rest of the work is easy, like connecting the water supply, mounting the seat, and caulking. So in this regard, the one-piece toilet is easy to install for the experienced DIYer.
The two-piece toilet is more comfortable to install in a sense you can deal with the tank and bowl separately. With lesser weight to wrestle with, typically one person can complete the entire installation.
However, the tricky part is mounting the fragile porcelain tank onto the bowl. Always follow the manufacturer’s instructions to a T to avoid leaks later. And cracks on either the bowl or the tank can happen when you overtighten the bolts.
Regardless if it’s a one-piece or two-piece toilet, get professional help if you aren’t confident with the work. And plumbing services usually will include hauling away your old crapper. So that is one less trouble versus if you were to do it yourself.
Since the one-piece toilet is one large piece of porcelain, there are no joining parts to upkeep. From an engineering point of view, the lesser parts or connectivity, the more reliable it will be.
Hence, upkeeping a one-piece toilet is super easy. There is no worry of water leaking out of the tank to mess up your bathroom floor.
The two-piece toilet will need the extra care for leaks once the rubber gasket that seal the tank has had its day.
Besides the usual replacement of tank interior parts, both designs can last for many years under proper care and usage. But since the one-piece model does not have the joining portion, the out-leaking problem does not exist. So it is a more durable toilet over the two-piece design.
The More Expensive One Piece Toilet
In general, a two-piece toilet cost less than its one-piece counterpart, for two reasons.
According to ConsumerReports.org, about 80% of toilets sold are the two-piece toilet models. The main reason being they have been around longer, and homeowners are familiar with it. So that provides the economy of scale that relatively brings down the production cost.
While the one-piece toilet doesn’t quite have the market volume like the two-piece, its production cost is higher in comparison. The more complex production process of the one-piece toilet is also a factor.
But still, the one-piece design is affordable for most consumers. The price ranges from $300 up to over $1000 for some higher-end models.
One-piece or two-piece toilet. Have you decided which one is more suitable for you?
Let's recap what has been discussed.
- Great aesthetics. Good match for a contemporary bathroom design in every modern home.
- Easy to clean and up keep. More hygienic with no joining parts for dirt and bacteria to hide.
- No worry of water leaking out of the tank and flooding the floor.
- More durable due to no joining part to maintain.
- More compact in size. A space saving toilet for small bathrooms.
- Cannot replace toilet tank or bowl separately. Once you break any part of the porcelain, you need a new replacement for the whole toilet.
- Heavy and bulky to install. But when secured to the toilet flange, the job is 90% done. So in this regard, it may also deem as an advantage to some people.
- Higher price.
- The tank and bowl can be installed separately, so it is less bulky and lighter to handle.
- The toilet tank and bowl can be replaced individually.
- Lower cost.
- Need to clean the area where the tank joins to the bowl. And it's difficult to thoroughly clean the joining area without removing the tank.
- Joining area attracts dirt, grime and bacteria.
- Water will leak out of the tank when the rubber seal starts to deteriorate.
- Not as sleek looking as the one-piece model.
So there you have it, the differences between the one-piece and two-piece toilet. If you have a point or 2 to add, feel free to leave your comments below. Thanks for reading & happy shopping!