Best Dual Flush Toilets to Effectively Conserve Water

Ian Mutuli
Updated on
Ian Mutuli

Ian Mutuli

Founder and Managing Editor of Archute. He is also a graduate architect from The University of Nairobi, Kenya.
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You might not think that flushing your toilet can contribute to a lot of wasted water, but it does. Luckily, we have the best dual flush toilets that save water with each flush. The best thing about dual flush toilets is that they get the job done while still saving water.

The high flush setting can use 1.28 gallons per flush or 1.6 gallons per flush. If you feel the need to use this high setting, go right ahead. However, if you've only passed liquids and don't require all this water, you can use the low flush setting.

This low flush setting uses around 0.8 gallons per flush or 1 gallon per flush. Let's look at some of the systems to make your house water efficient.

Best Dual Flush Toilets

1. WOODBRIDGE T-0019 Cotton White Toilet

WOODBRIDGE T-0019 Cotton White toilet | Modern Design,...
  • ✅ [LUXURIOUS MODERN DESIGN]: Luxurious Modern Design one piece...
  • ✅ [EASIEST TO CLEAN TOILET]: WOODBRIDGE toilets are the easiest...
  • ✅ [QUITE & POWERFUL FLUSHING]: Siphon Flushing one piece...
  • ✅ [Map Flush 1000 Grams]: Best Maximum Performance Flush score...
  • ✅ [COMFORT DESIGN]: Comfort Height Design, Chair-height seating...

Our first pick is at the top for a reason. This best dual flush toilet is about class, luxury, and style. If you want your home bathroom to look like a high-class hotel bathroom suite, get this option. The ultra-white toilet bowl also adds to the style of our number one option.

The siphon flushing system creates a powerful flush that ensures that your toilet bowl will always remain clean no matter how much waste you put into it. The height of the toilet seat is also comfortable and can be used by people who have mobility issues. This toilet is also EPA Water-Sense certified as it uses 1.28 gallons of water for the high water flushing system.

Woodbridge is a renowned brand that offers the best products to its consumers and uses the best flushing mechanism to ensure that you get a comfortable and clean experience every time. If you need any help with your toilet, you can be sure that the Woodbridge team based in California will have someone ready to help you out.


  • Uses a powerful flushing mechanism
  • Has a luxurious and classy design
  • Water-efficient
  • Has a quiet flushing mechanism
  • Easy to clean
  • Comes as an all-in-one package


  • Can be difficult to install
  • Heavy

2. Convenient Height Toilet

20 inch Extra Tall Toilet. Convenient Height bowl...
  • Extra tall toilet bowl: 20 inches. Height top of seat: 21". Solid...
  • Adds bathroom safety. Helps sit down and stand up more easily....
  • High performance. Designed and engineered by Convenient Height...
  • Approved by Board of Registration of Plumbers, CEC. May qualify...
  • Dual flush valve 1.28 gal/full, 0.9 gal/light. Advanced...

These toilets have a seat height of 20 inches and come as a two-piece toilet. If you have mobility issues or are very tall and need a seat that will feel comfortable, this is the dual flush toilet for you. The flushing mechanism uses 0.9 gallons of water on the light option and 1.28 gallons per flush for the heavier option. This makes it conserve more water than our first option above.

If you love conserving water, then these toilets will serve you well. This dual flush toilet is EPA Water-Sense certified and features a heavy-duty seat and a slow close. The heavy-duty seat makes this dual flush toilet good for residential and commercial use. Also, if you are a bit on the bigger side or have family members, this toilet seat will feel extremely comfortable.

The height of this dual flush toilet makes it great for people who suffer from mobility problems. Therefore, if you have elderly individuals in your home and want them to have a better experience using the toilet, get this dual flush toilet.


  • Great for tall people
  • Great for water conservation
  • Helps prevent falls
  • The purchase allows you to qualify for tax deductions if eligible
  • Offers high performance


  • Not suitable for short people or kids
  • Expensive

3. Swiss Madison Well Made Forever Glossy White

Swiss Madison Well Made Forever SM-1T254 St. Tropez One...
  • Modern design, clean, sleek look and compliment with different...
  • Fully skirted trapway - extremely easy to clean
  • Sleek and eye appealing modern design
  • Soft closing seat included
  • Special holes to reach the bolts - includes bolt caps and wax...

You will love the glossy white nature of this toilet bowl. Made with your needs in mind, these best dual flush toilets are designed with the greatest innovation and technology. The dual flush system that this toilet uses is a powerful tornado-like mechanism that cleans liquid waste and solid waste without leaving any stains or evidence behind. The soft-closing seat is also an advantage.

Cleaning these toilets will be a breeze, thanks to the removable seat. The matte chrome hinges can also easily come off to allow you to clean better. In addition to removable matte chrome hinges, these toilets have a striking look thanks to the skirted Trapway, making the toilet base easy to clean.

You can either choose a full water release or a partial water release for this dual flush system. These toilets save water as they work with 0.8/1.28 gallons per flush system. You won't have a very hard time installing these toilets as they are designed with special holes to allow for an easier installation process. Everything you need to install these toilets properly is included in the purchase for a leak-proof experience.


  • Has a comfortable height
  • Very easy to clean thanks to the fully skirted trapway
  • Has a soft-closing seat
  • Has a dual tornado cleaning flush that leaves nothing behind
  • Modern, clean, and sleek design
  • Comes with everything you need to install


  • Comes with a one-year limited warranty
  • An open-lid flush can soak your floor

4. WOODBRIDGE T-0001 Elongated One Piece Toilet

WOODBRIDGE T-0001, Dual Flush Elongated One Piece...
  • ✅ [LUXURIOUS MODERN DESIGN]: Luxurious Modern Design one piece...
  • ✅ [EASIEST TO CLEAN TOILET]: WOODBRIDGE toilets are the easiest...
  • ✅ [QUITE & POWERFUL FLUSHING]: Siphon Flushing one piece...
  • ✅ [Map Flush 1000 Grams]: Best Maximum Performance Flush score...
  • ✅ [COMFORT DESIGN]: Comfort Height Design, Chair-height seating...

This dual flush toilet is a one-piece dual flush toilet that doesn't need any extra fancy plumbing on your end. The elongated bowl will work with your bathroom interior, thanks to its flexible nature. If you hate having to flush your toilet several times to get all the deposits to go, you'll love this dual flush toilet.

These best dual-flush toilets employ siphonic flush action, which can take care of even the toughest and largest deposits in a heartbeat. In addition, the modern lines of this dual flush toilet make it stylish and a great asset to have in your bathroom. If you want your home bathroom to have a modern European chic look, this is the dual flush toilet for you.

The comfortable height, stylish design, siphonic flush system, and 5-year warranty are some of the reasons why we love this dual flush toilet. When using the light flush option, you'll use a gallon of water, and you'll use 1.6 gallons of water with the heavy option. The toilet seat stands at 18 inches high, which makes it better for tall people. However, you can still use it even if you're not that tall.


  • Has a sleek and stylish design
  • Uses siphonic flush action to get rid of waste effectively
  • Comes with a five-year warranty
  • Comfortable height
  • Great for tall people


  • Can be difficult to install alone
  • Uses more water than the other systems

5. American Standard Toilet

American Standard 2887218.020 2887.218.020 Toilet,...
  • EverClean surface inhibits the growth of stain and odor-causing...
  • Siphon jet bowl technology with PowerWash rim provides optimal...
  • Seats sold separately
  • Limited lifetime warranty on chinaware
  • Limited five year warranty on all mechanical parts

Our final pick is this American standard toilet that uses the siphon flush system. This flush function deserves a prize for its ability to use a limited amount of water to create the best flushing power. With a single flush of the higher setting, you can eliminate any waste without having to flush again. In addition, the elongated bowl means that you can enjoy the extra inches at the front for added comfort if you are a man.

This siphoning technology is combined with a PowerWash rim to give you the best flushing performance even with the half-flush. Standard toilets may require you to flush again and wait until the toilet tank is full; this toilet will give you a great experience. The lower setting uses 0.92 gallons on a single flush, while the higher setting uses 1.28 gallons on a single flush.

The EverClean unique coating on the toilet surface prevents any stains from getting left behind by any liquid and solid waste. This technique also protects the toilet from scratches and helps dislodge any solid waste from the inner bowl. In addition, this toilet is EPA Water-Sense certified and will always remain squeaky clean. This elongated dual-flush two-piece toilet is great for elongated toilets and works great in modern bathrooms.


  • Has an EverClean coating to always keep it clean
  • Great for modern bathrooms
  • Water-efficient
  • Very comfortable to use thanks to the elongated toilet bowls
  • Offers great value for money
  • Comes with a five-year limited warranty on all mechanical parts


  • Doesn't come with a seat
  • Requires professional plumbing to install

What to Consider When Choosing the Best Dual-Flush Toilet

1. Water Conservation

The whole point of getting the best dual flush toilets is to conserve water. Therefore, getting a toilet that saves you water is a great idea. We've seen above that different models use different amounts of water. For example, our fourth option above conserves water but doesn't do it as well as the other four options.

Therefore, you can check how many gallons are used per flush if you are concerned about using the least water possible. In addition, theIn addition, the dual-flush technology ensures that you use less water than the traditional single flush toilet.

Ensure that you are not flushing multiple times, as this can take away the whole point of using the dual-flushing pressure. Although solids can be harder to shift, a good model will still outdo single flush toilets when saving water.

Use the low flush setting to remove liquid wastes and the higher setting to remove solid wastes. Remember that dual flush toilets save water when used well.

2. Toilet Type

There are two types of toilets, including one-piece toilets, two-piece toilets, and wall-hung toilets. The first option is popular because it doesn't need a lot of assembling. You'll find that the tank and the bowl are one. This makes for a one-piece toilet that has a sleek design and is easy to clean. In addition, you won't have to fret about bacterial build-up with the one-piece toilet.

The two-piece toilet is more conservative and better for traditional bathrooms. However, you may have to get a good plumber to come and help you assemble this type of toilet to prevent leaks in the future. The bowl and tank and connected by a seal.

These types of toilets are cheaper. The third type is the wall-mounted toilet. This wall-hung toilet is becoming more popular, especially for people who have a small bathroom and want to save space. You can get this type of toilet for your downstairs bathroom.

3. Shape and Size

When choosing the best dual flush toilets, you need to pay attention to the size and shape to ensure that it fits the space you have. There are two shapes, namely round bowls and elongated bowls. You'll find that the round bowl is fatter and shorter than the elongated bowl.

The elongated dual flush toilet is about 2 inches longer than the round toilets and measures between 18-19 inches in length. The elongated bowls are more comfortable to sit on, especially for men, compared to other toilets.

Whether you have the Kohler K 3987 0 or any other toilet that uses the dual tornado flush technology, you need to consider the seat's comfort first. The extra inches at the front can go a long way.

The height of the kind of toilet you choose can also affect your overall experience. For example, you can have a heated toilet seat, but you will still not enjoy the process if the height is uncomfortable. The standard height is 13-15 inches tall. However, for extra comfort, the range is 17-19 inches high.

4. Technological Innovations

Modern toilets come with cool features that improve your bathroom experience. For example, many modern toilets use a pressure-assisted flush system that uses air to suck the water and the waste from the bowl when it comes to the flushing system.

Old models have a gravity flush structure that cannot compare to the Dynamax tornado flush system or any other dual-max flushing system.

Although modern systems are more expensive, they are with them because they are more efficient and leave your toilet extremely clean.


Which of these best dual flush toilets impressed you the most? As we transition into a brighter and more sustainable future, conserving water has become more paramount, and having a dual flush toilet can go a long way to ensure that we save a lot of water.

Ian Mutuli

About the author

Ian Mutuli

Founder and Managing Editor of Archute. He is also a graduate architect from The University of Nairobi, Kenya.
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