What's The Best Dual Flush Toilet?
Reviews and Buyer's Guide of 2020

Most of the time, you would go into a bathroom and when you finish up, you look at the flush button and see two halves to the one button, right?

Well, this article is here to tell you that the mystery has been debunked; toilets with a big flush button that is made of those two half buttons is called a dual flush toilet(see here for other toilet types).

Sounds fancy, huh? Basically, what it does is that one button releases a certain volume of water while the other releases double that amount. It gives the user the power to decide on the suitable amount of water they should use.

Now some might argue that all toilets and flushes are the same and that it is basically just a hole where you bury your feces but, our list of top picks would beg to differ.

The 5 Best Dual Flush Toilets




#1 American Standard H2Option

American Standard H2Option
  • Low water consumption
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    EverClean Surface
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    Siphon jet bowl technology with PowerWash rim
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    Highly efficient

Type: Two-piece
Bowl Type: Elongated
Water Use: 0.92 & 1.28 GPF

#2 Toto  Neorest 

Toto MS992CUMFG#01 Neorest
  • Double Cyclone Flushing system
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    Convenient remote control
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    Hands-Free Automatic Flush
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    Heated seat with temperature control

Type: One piece
Bowl Type: Elongated
Water Use: 0.8 & 1 GPF

#3 KOHLER Wellworth

Kohler K-3987-0 Wellworth
  • Gravity Flush toilet
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    One year warranty

Type: Two-piece
Bowl Type: Round
Water Use: 1.1 & 1.6 GPF

#4 TOTO Aquia

Toto CST412MF.01 Aquia
  • Low consumption
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    Universal Height
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    Chrome push-button

Type: Two-piece
Bowl Type: Elongated
Water Use: 0.9 & 1.6 GPF


Woodbridgebath t-0019
  • Easy-to-Clean Design
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    NO clogs, NO leaks
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    All-in-One Package Design
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    Soft Closing Seat with Stainless Steel Hinge

Type: One-piece
Bowl Type: Elongated
Water Use: 1 & 1.6 GPF

1. American Standard H2Option

Our number one contender is the Right Height Elongated two button toilet, the American Standard H2Option.

With an additional siphon jet that gives a power boost to the existing highly efficient 0.92/1.28 gallons per flush (GPF), it surely is one of the best dual flush toilets there is.

Being a toilet made of vitreous China with such dimensions, one might find that it is not as expensive as others.

What We Like:

  • The rim height is highly suitable; made specifically for your comfort, it extends a bit above other toilets yet it proves to be for the better.
  • Extremely efficient since the option of controlling water flow contributes in reducing water consumption along the costs of your utility bills.
  • Highly inclusive warranties on the china and the mechanical parts offer an attractive factor for people to pay a small price for long term convenience.

What We Don't Like:

  • There is nothing in specific that is horrendously wrong however, it is our duty to mention that even though this is one of the best dual flush toilets, it does not come with a seat; you would have to buy your own

2. Toto MS992CUMFG#01 Neorest

Another brand name is the world famous, Toto – And no..., not the band. Or... is it? Unfortunately (or fortunately), we're talking about the Toto toilet brand of course. 

The MS992CUMFG Neorest model is known for its modernistic look and its double cyclone flushing system.

It is made with ceramic topped with a layer of Sanagloss and contains 0.8 and 1.0 GPF.

What We Like:

  • It has quite an impressive futuristic look, with night lights fitted in, a remote control, hands-free flushing and a heated seat with Softclose technology to preserve it longer.
  • The Cyclone siphon jet flushing system, combined with the shape of the bowl increases the efficiency of the double flush toilet by a long shot.

What We Don't Like:

  • It requires access to electricity, a 120V outlet to be specific so, while it might save on water consumption, it would suck in a lot of electricity which is counter intuitive.
  • One might consider the product to be a bit unnecessarily expensive in spite of the fact that it does possess amazing features.

3. KOHLER K-3987-0 Wellworth

Known for its effectiveness, the Kohler K-3987-0 Wellworth offers quite a large quantity of water per flush.

Moreover, it is fitted with class five flushing technology which allows a powerful stream of water to flow from all around the bowl, preserving its cleanliness.

What We Like:

  • With a space-efficient design, its round shaped bowl makes it the perfect choice for compact spaces and small apartments. Also, the toilet has a very convenient lever on the side that makes the dual flush toilet an easy one.
  • The dual flush option ranges between 1.1 and 1.6 GPF which is larger than what most two button toilets offer. The large amount combined with the quick, powerful release of water makes sure every time the bowl is flushed, it is a cleansing attack.

What We Don't Like:

  • Again, this is another design that does not come with a seat.

4. TOTO CST412MF.01 Aquia

The TOTO CST412MF.01 Aquia is a double flush toilet fitted with a chrome button and an appealing design, all with a relatively low starting price.

What We Like:

  • The Dual-Max flushing system is very successful in putting a dent in the aggregate water consumption level due to the creative design of the trap way and the bowl.
  • Considering the features it offers, the toilet’s price is very much suitable when compared to other toilets in the market made by brands with an equivalent reputation to Toto – again, not the band.

What We Don't Like:

  • This price does not include the seat; if you want a toilet seat, you would have to purchase it separately.


Lastly, we have the WOODBRIDGE T-0019, a product famous for its ease of installation, siphon flushing system, extremely comfortable design and a 1.0/1.6 GPF.

Talking about design, it's got a slick all-in-one design where there are no grooves. You know what that means... it's... super easy to clean!

What We Like:

  • Other than the fact that it comes with a seat, the design is not only contemporary, sleek and defined but also, of a comfortable height for adults and a highly affordable price.
  • It also contains no grooves or unreachable places which makes the task of cleaning the toilet a lot easier than it actually is for most toilets.

What We Don't Like:

  • The warranty for the mechanical parts only lasts a year which some may argue to not be that inclusive since most toilets tend to give in after the allotted period.

That concludes the list; yet, in case if you still can’t tell which toilet is better or which one you should choose, these criteria might help.

What is a double flush toilet?

In simple terms, it is a toilet that offers you the option to either flush with a small amount of water or double that amount according to what you have “deposited”; hence, the term “double flush.”

What to look for:

  • Water consumption: You want a toilet that will actually decrease your water consumption. Despite the fact that most of them do, you need a toilet with a powerful enough system so you won’t have to regularly use the full flush option. 
  • Price: By defining your budget, it would be easier to limit your choice to a product that will suit your needs and your budget. Keep in mind, that it is a toilet after all so, be mindful of how much you spend. 
  • Shape: The two available shapes are round and elongated. It usually comes down to your personal preferences but, if you have a small bathroom, it would be better to use a round bowl since it takes less space. 
  • Warranty: No doubt a large, inclusive warranty is what you want yet, there is only so much that a company can do for a dual flush toilet.


All in all, the criteria for best dual flush toilets usually revolve around these points which can be noticed in the American Standard H2Option.

It not only comes with an amazing price, but several clients with verified purchases have mentioned in their reviews how the H2Option manages to completely get rid of wastes whether it is by using the full flush or the half flush option. 

Furthermore, it has an appealing design and an additional siphon jet which adds a kick to the flushing system and makes it more efficient when it comes to cutting water consumption.

American Standard H2Option
Our #1 Dual FlushToilet Choice

  • Water Efficient - Choice of either a full or partial flush for maximum water savings.
  • Comfortable - Right Height toilet
  • Powerful - Gravity-flush toilet
  • Low water consumption - 0.92 &1.28 GPF option