What Are The Tankless Toilet Pros And Cons?

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Last Updated on January 12, 2023 by acechapman

You might have seen the simple, sleek design of a tankless toilet at work or in public places and wondered how you could get one in your home. Tankless toilets are now available for home use. However, they can be difficult to install and have some limitations. Continue reading to find out what are the tankless toilet pros and cons.

What is a Tankless Toilet?

A tankless toilet uses the pressure of the water supply line to flush waste out of the bowl instead of using a tank of stored water. This type of toilet is designed to save water and space, as it does not have a large tank that sits on top of the bowl.

In a tankless toilet, the flush is initiated by pressing the flush handle or button, which activates a diaphragm or piston inside the toilet. This pressurizes the water supply line, forcing water into the bowl and pushing waste out of the bowl through the trapway and into the sewer line.

Because tankless toilets do not rely on a tank of stored water to flush, they are able to flush using less water than traditional toilets. They also tend to be more compact, which can be a benefit for small bathrooms or for people who want to save space.

tankless toilet pros and cons

Different parts of a tankless toilet

Special valve

Tankless toilets, which connect to the pipes with an electric pump, flush the water from the tanks using gravity. It is usually located inside the bowl. This valve restricts water from entering the bowl during flushing and prevents the toilet’s overflowing. However, tankless toilets drain in the same way as traditional toilets.


Tankless toilets don’t use tanks to flush out the waste from the toilet bowl. Instead, they use a Flushometer. It refers to the fixture from which water is pushed through the drain system at high pressure. To function properly, this fixture requires approximately 1.6 GPF water pressure. Manufacturers may even recommend a 0.8 GPF.

Tankless Toilet Pros and Cons 


  • Flushing power
  • Sleek design
  • It is very easy to clean
  • Space and water savings
  • Require less maintenance
  • You get additional features
  • Eco-friendly


  • Toilets are more expensive than traditional ones
  • Depends on electricity
  • Flushing noise
  • Installation is difficult

How do different types of tankless toilets work?

Commercial buildings with tankless toilets

Urinals are the most popular tankless toilets available in public. Most urinals are operated with a valve that’s metered using a piston or a dial. The valve’s design is so that it automatically closes after the flush cycle has ended. This activity is controlled by no other technology or computer.

There is a lot of control available for traditional flush-valve tankless toilets. Small adjustments can be made by building owners to adjust the flush volume. However, owners in many countries, including the United States must follow the national water usage standards. These toilets can be enhanced by features like ‘hands-free flush technology’ or ‘water-conservation device’.

All tankless toilet models are identical in commercial settings. A valve opens the supply line so that water can flow into the bowl after flushing. The U.S. Department of Energy states that the current standard for water consumption in urinals amounts to 1 gallon (or 3.80 liters).

tankless toilet pros and cons

Urban apartments with tankless toilets

Toilets in residential tanks that do not rely on flush valve technology are less efficient than toilets in public bathrooms. They are unfortunately less common due to the high water pressure requirements. New York is an exception to this rule.

Tankless toilets are a popular choice in large cities such as the one mentioned.

Modern versions of these toilets have sleeker designs and include features such as self-cleaning systems and seat heating.

Toilets with flush-assisted tankless spouts

You can find a variety of stylish designs and modern technologies in these toilets. Some use computer-controlled valves to release water at different stages, while others rely only on electricity.

Factors When Buying A Tankless Toilet

There are many factors that will influence your decision on whether to get a tankless toilet.

  • These toilets can cause damage to your bathroom pipes and could cost you additional.
  • High-powered flushing requires pipes that are stronger and larger than they were before. During the process, pipes are subject to a lot of pressure. These toilets may not be suitable for old buildings.
  • You must ensure that there is an electrical power supply at the site.
  • Tankless toilets are useless in areas where there are frequent power outages.
  • These toilets come at a high price because of the installation costs. These toilets can cost as low as $1000, but installation can cost as high as $5000.

On the other side,

  • These tiles are easy to maintain and will make your bathroom more spacious.
  • Leakage is not a concern
  • You could consider it if your building has low traffic and a backup generator.
  • These are a treat for the eyes and you can use them in small bathrooms.

Frequently Asked Questions

Is it possible to flush a toilet with no tank?

Because they directly connect to the water supply, tankless toilets flush away any remaining waste. It applies high pressure to the toilet bowl while ensuring that the water only releases during flushing.

What is the water pressure required for a tankless toilet

The tankless toilets’ flushometers need to be able to fill up faster and produce cleaner flushings more often than their counterparts.

Wrapping up

A tankless toilet is a great option if you are renovating or upgrading your bathroom.

Tankless toilets look great and are very stylish. If you have the money now, you can save money on your water bills. However, be sure to weigh the tankless toilet pros and cons.

A tankless toilet requires a large supply line in the house. You will be able to install pipes according to your requirements when building a new house. You should not replace the toilet in an existing house without the proper supply line. The high pressure of the flush can cause damage to your pipes. Therefore, a tankless toilet is not the best option if you don’t have the budget to retrofit or redo the pipes in your bathroom.

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