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7 Types of Toilet Flush Systems – Pros and Cons

toilet flush system

Toilets serve a vital function in the house, one that is frequently overlooked by many people until something goes wrong. The flushing of a toilet consumes a significant amount of water in a home. Everyone is aware that our toilets flush, but no one is aware of the toilet flush system used in their home. Even many homeowners are unconcerned about it.

In actuality, there are several types of flushing systems our toilets possess.

In this article, we will take you through the seven best flush systems, along with their pros and cons.

So, let’s get started!

Different types of Flush Systems

The flushing system of a toilet is one of the most significant elements to look for when purchasing a new toilet. If you want a forceful flushing, clog-free toilet, you must select the best toilet for flushing power.

The several types of flushing systems are as follows:

1.     Gravity Flush System:

Gravity flush toilets provide a forceful flush while using minimal water. The system used in gravity flush toilets, which have been utilized for over a century, is one of the most regularly used flush systems.

Many of the manufacturers have increased the effectiveness of gravity flush systems over the years by modifying tank and bowl designs and installing larger flush valves.

These advancements by many manufacturers have resulted in the effective use of water. Gravity flush systems are affordable and simple to maintain; yet, they are subject to sweating and can occasionally underperform.

Still, gravity flush toilets have been recognized as the best toilets for flushing power. In a nutshell, the gravity flush toilets have more pros as compared to cons, which are as follows:


  • They are quiet
  • Strong


  • These toilets can clog easily

2.     Pressure Assist Flush System

The gravity flushing system is combined with compressed air in a pressure-assisted toilet flushing system. This method is used to provide a forceful flush in toilets when the gravity flush system alone would not be enough.

A pressure-assisted toilet features a pressure vessel, which is a secondary plastic tank inside the main tank.

When you flush the toilet, the water forcefully and violently exits the tank and flushes the toilet. Having a stronger flushing system, these toilets are referred as no clog toilet. Pressure-assisted flushing systems are louder than gravity flushing systems, which may be uncomfortable for some people. Still, they have been the second-best toilets for flushing power. These toilets are equipped with various pros and cons, such as


  • Maintains the bowl’s cleanliness.
  • A powerful flush


  • They are noisy

3.     Dual Flush System

In this list of best toilets for flushing power, a dual flush system takes third place.

It is a method in which the toilet has two choices for how much water to use. One is for flushing liquids with a little amount of water, while the other is for flushing solids with a higher volume of water.

Dual flush toilets usually have flush buttons mounted at the top of the tank lid.

A dual flush valve assembly is installed on top of the flush valve within the toilet tank.

It possesses various pros and cons:


  • This is better for the environment.
  • Excellent in locations where there is a scarcity of water.


  • This type of flush system is not common nowadays

4.     Double Cyclone System

Toto first invented the double-cyclone flush technology, which is utilized in the majority of their toilets. Water from the tank enters the bowl through two nozzles at the top of the bowl, pointing sideways. As a consequence, the water in the bowl swirls like a cyclone, which is extremely effective in cleaning, rinsing, and flushing the toilet. This system is equipped with pros and cons, which are as follows:


  • Effective while using less water.
  • The mechanism is simple


  • It may be extremely difficult to find the replacement parts of these toilets

5.     Tornado Flush System

The tornado flush system, which is an upgraded version of the double-cyclone flush system, is employed by the new Toto toilets. These are the second-best toilets for flushing power, developed by the band Toto.  Instead of two nozzles, the tornado flush system introduces water into the bowl through three sideways jets positioned around the top of the bowl.

When water enters the bowl, it fiercely swirls around like a tornado, effectively cleaning the bowl. It also has a quieter flush.

6.     Washdown Flush System

Washdown toilets are generally seen in Europe and very seldom in the United States. These are frequently compared to standard siphon toilets. However, they have a larger trap way, which allows water and garbage to exit more easily.

This system contains no sophisticated valves or floating balls. To flush the toilet, it just employs gravity and the weight of the water. As a result, the rushing water’s strong pressure pushes all waste out of the basin. Generally, toilets with washdown flush systems are often referred to as toilets that don’t clog.

Its pros and cons are as follows:


  • Generally free of clogs.
  • Flushes rapidly


  • This results in skid marks in the bowl.

7.     Ballcock Flush System

One of the most prevalent flushes is the ballcock flush method. It employs a ballcock and a plunger to fill the toilet’s water tank.

A ballcock is a floating ball that is connected to a rod. The movement of the rod triggers the plunger, allowing water to fill or empty the tank.

The ballcock is very reliant on the water level; if there is insufficient water, it will not work effectively. This flushing system is equipped with pros and cons, which are as follows:


  • Simple substitutes.
  • It is effective.


  • This system is prone to failures


We believe that this comprehensive guide on seven types of flushing systems will help you to select the best toilets for your home.

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