The Best Flushing Toilets Of 2020 
Review & Buyer's Guide for the Most Powerful WCs


Today, we're going to take an in-depth look (pun intended!) at high powered flushing toilets - one of the many types from Flush Guide's list of toilet types. 

So what is the most important factor when  it comes to judging which are the best flushing toilets out there?

Flushing power of course!

If my memory serves me right, there was a commercial I saw where the toilet being advertised was being promoted by the fact that it could flush several golf balls down - that’s what I’m looking for- and that’s the quality of the kind of toilet I want to introduce to you.

Nobody wants a toilet that can’t even handle the very basic functions; watching toilet paper and shit stuck in the toilet bowl isn’t a the most endearing thing to see.

Top 3 Rated Flushing Toilets Reviewed

So, what are we looking for when we talk about the flushing factor?

Power. Strength. Brute force.

In the end, it all comes down to this: The best flushing toilet is one where that can handle flushing just about anything down.

Our goal here is to find a unit which has the strongest flushing power that is also able to maintain minimal water usage.




#1 American Standard Champion-4

American Standard Champion-4
  • Comfortable 
  • Minimal cleaning: EverClean surface 
  • No blockages: Large Trapway

Bowl: Elongated

Type: One-piece

Water Use: 1.6 GPF

#2 TOTO Ultramax II

Toto ultramax II
  • Water Efficient: 1.28 GPF
  • Comfortable: Universal height
  • Strong Flushing: Double Cyclone 
  • Quiet
  • Minimal Cleaning

Bowl: Elongated

Type: One-piece

Water Use: 1.28 GPF

#3 Kohler Highline Classic

Kohler Comfort Height Elongated
  • Comfortable: Elongated bowl
  • Strong Flush

Bowl: Elongated

Type: Two-piece

Water Use: 1.6 GPF

For anyone who is looking for a strong flushing toilet, Champion-4 is your boy. With the gigantic 4'' flush valve and 2-3/8 inches trap-way, this American Standard model swallows things like a tornado. Along with the crazy power, Champion-4 can flush away mass that is 70% larger compared to normal toilets.

Last time my son accidentally flushed away his toy car into this machine, and it was never seen again. Not even a clog. This is how powerful this monster is!

The installation process of this toilet  is a piece of cake. Even if you’ve never touched a screwdriver before, you can handle it at ease. Furthermore, this model's height is 16.5 inches, which is compliant with ADA standard. 

The only thing that may hold people back is the fact that it uses 1.6 gallons of water when flushing. Lastly, the dimension of this model are 29.75 x 17.75 x 28.5 inches.

"With great power comes great responsibility." American Standard not only gives you the strong flushing power, but also a 10-year warranty on this model. And the best thing is that each of the toilets coming out from the factory have been 100% flush tested!

What We Like:

  • Two-piece toilet
  • Fitting toilet seat
  • Super strong flush
  • Easy to install
  • EverClean surface
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    Ten year warranty

As I mentioned before, 1.6 gallons per flush is the maximum usage of federal regulation; however, in some water-restricted states, 1.28 gallons is the limit.

What this means is that the TOTO Ultramax II will definitely work out for you. Ultramax II uses 1.28 gallons per flush, which sometimes could mean that the flushing power is a little bit less powerful. However, this amazing piece of toilet is equipped with TOTO’s double cyclone technology, not to mention the pressure-assisted flushing system.

Double cyclone technology contains two high-powered nozzles that move the water around the bowl in such a way that it is extremely powerful, and as a result it is quick to empty and clean the bowl every time.

The Ultramax II design is impressive as it comes in an elongated shape, while the inner side of the bowl is coated with SanaGloss, which automatically keeps the bowl clean and even combats the bacteria.

Lastly, the toilet is compliant with ADA-restrictions, which means the toilet seat stands at about 18 inches. Not to mention that this model is also a one-piece toilet, which means you are saving space and time in installation.

What We Like:

  • WaterSense approved - 1.28 GPF
  • Universal height for maximum comfort
  • Double Cyclone flushing technology
  • Powerful, quiet flush every time
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    SanaGloss surface - Cleans your toilet bowl with every flush

Kohler K-3493 may not be the most water saving model out there in the market, but  if you are looking for a toilet that can handle all of your shit, then this is probably the one for you!

The Kohler K-3493-0 uses a pressure-assisted flushing system, which means the flushing power is stronger than those found in normal toilets.

Surprisingly enough, this model only uses 1.4 gallons of water when flushing. Which is definitely a plus. The only drawback here is that, like all of the pressure-assisted toilet, the noise of the flushing sound can sometimes be disturbing.

The Kohler K-3493-0 is a two-piece toilet, which means the price is cheaper than the average toilets. The toilet bowl is elongated in shape and the toilet seat height is just right as it’s designed in way that caters to your comfort while you are seated.

Just one thing to be careful before you purchase this item, that the seat and supply line are not included.

What We Like:

  • Two-piece toilet
  • Elongated bowl offers added room and comfort
  • Pressure Assist flushing system
  • Comfort Height(R) feature offers chair-height seating that makes sitting down and standing up easier for most adults

What Makes A Good Flushing Toilet?

Why do flushing toilets have stronger flushing power but has less water usage?

The reason behind the flushing secret is in the way the  water movement - The faster the water spins in the bowl, the cleaner the toilet becomes because there is more power being created and the suction is greater.

Besides the strong flushing power, a good flushing toilet also saves you money.[1]

Some toilets can flush with less than 1 gallon of water today, which means you could save about $100 per year on the average water bill!

However, I think we can all agree that the most satisfying part of a powerful toilet is that it can flush golf balls down it's hole.

4 Types of Flushing Systems

It’s important to first understand the basics of what makes a good toilet flush well. So here, we’re going to go over the options.

At the end of the day, the goal for a toilet is:

  • Not to flush twice

  • Let the jet clean the toilet completely

Here are four different types of flushing system.


This is the most common and most used flushing system.

By storing water in the tank, it uses gravity to create pressure and washes everything from the tank and the bowl into the trap way.

Another benefit of choosing gravity flush toilets is that they are easy to maintain.

Although it has some flaws, this ancient gravity flush system is still considered one of the best systems out there.

Think of this as the gravity flush system, but on steroids.

By storing a pressure tank inside the water tank, the air creates added pressure into the water, increasing the flush power.

The early pressure assisted models used to have maintenance problems; however, with recent technology being more advanced, it is no longer an issue.


The biggest problem with the pressure-assisted flushing system is the noise. However, you will find out that the noisier it gets, the stronger the flush is.

To put the cherry on top, most of the pressure assisted toilet has the dual flush option.

The only reason pressure assisted toilets aren’t as popular as gravity toilets is because they use it is a newer technology. It’s only a matter of time before they become the next best thing in the toilet world!


TOTO, how can we praise you more?

The leading name in the industry is still inventing interesting new technology every now and then, with Double cyclone being one of them.

The great benefit of the double cyclone system is it only uses 1.28 gallons of water per flush. To be clear, usually, a toilet uses 1.6 gallons while flushing. Just think about how much it can save from your water bill.

The double cyclone is a mix of gravity flush and the pressure-assisted flushing system.

The difference is that the double cyclone system uses two nozzles instead of rim holes, and with the help of the propulsion system, more water is directed to the siphon, creating a more efficient flush.

This recent technology is surprisingly gaining more and more popularity.

The dual flush system is great because it gives customers an option between partial or full flush.

To be precise, the dual flush system offers 1.1 gallons or 1.6 gallons choices.

It is fascinating to watch the dual flush design slowly but surely take over the market.


American Standard Champion-4
Our #1 Most Powerful Flushing Toilet Choice

  • No more second flush
  • Powerful, powerful flush
  • HUGE valve to swallow anything
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    Super spacious
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    Sold numerous copies worldwide 
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    10 Year Warranty