Top 5 Best Dual Flush Toilet Reviews & Guide 2024

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Last Updated on November 17, 2022 by acechapman

In this guide, we’ve made up a list of the best dual-flush toilet reviews available on the market.

The dual flush type of toilet is becoming increasingly popular for its ability to save water on most flushes.  This not only reduces the amount of water used, saving resources, but it also lowers water bills.

The EPA has a certification scheme for toilets that use less than 80% of the federally regulated 1.6 gallons per flush. However, at the same time have the capacity to clear a specified volume of solid waste on every flush.

This test is carried out using miso paste to have a constant test load. All the toilets below, with the exception of the Saniflo, are EPA Water Sense certified.

The Saniflo Sanicompact is a different type of toilet that uses a macerating pump to remove waste. It still has a dual flush and very low water consumption.

TOP 5 Dual Flush Toilet Reviews

1 – American Standard H2Option Toilet

dual flush toiletThe H2Option has a dual flush system using 1.6 GPF for the full flush and 1.0 GPF for the partial flush. Its flush is operated by two chrome-plated push buttons on the top of the tank. The flushing action is enhanced by American Standard’s H2Option Siphonic flushing system which is a high-efficiency pressurized flushing action.

Even though the full flush uses more than the general Water Sense specification of 1.28 GPF, this is a dual flush toilet the testing is different. The test is based on the average of two partial flushes and one full flush. H2Option meets this specification and is therefore Water Sense certified. This toilet is not ADA-compliant. The toilet, which is 100% flush tested before leaving the factory, carries a 5-year limited warranty.

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2 – Toto Washlet G400 with Integrated Toilet Model

dual flush toilet reviewThe Toto Washlet is a compact, one-piece, skirted toilet and bidet combined. It is one of the very few dual-flush toilets that meet all the requirements of ADA compliance. Although other dual flush toilets meet the height and bowl specifications for ADA compliance, they do not meet the levered flush requirement. It overcomes this by having an automated flushing mechanism. This is a technology-packed toilet with both construction and electronically controlled features. The Washlet is Water Sense certified.

The toilet has Toto’s 3D Tornado flush system. It uses a series of nozzles to increase the flushing capability of the toilet using minimal water. In combination with the ultra-smooth ceramic glaze, this helps keep the toilet cleaner for longer and minimizes the need for manual cleaning.

There is an automatic opening and closing of the lid, which then triggers the automatic flush. The seat is heated and the washing feature of the bidet can be adjusted for both direction and temperature. These functions along with the variable warm air drying can be adjusted via the wireless remote control pad.

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3 – KOHLER Wellworth Dual Flush Toilet

best dual flush toiletThis Kohler Wellworth dual flush toilet has a rounded front that requires less floor space than the elongated toilets, therefore suitable for smaller bathrooms and powder rooms.

The fact that the toilet is a little smaller does not reduce its efficiency of the toilet. WellWorth has a Class 5 flush system that can remove a large quantity of waste in just one flush. It still meets the EPA Water Sense specifications for low water consumption.

Kohler’s class 5 toilets are renowned for the amount of waste that they can flush away in a single flush, even with only 1.28 gallons of water. The dual flush system delivers a full flush of 1.6 gallons or a partial flush of 1.1 gallons.

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4 – TOTO Aquia Dual Flush Toilet 

The TOTO Aquia is a close-coupled two-piece design. On the top of the tank are two chrome buttons that trigger either of the two flushes. The toilet with a seat is what Toto refers to as ‘universal height’. This means that the shape and height of the seat meet the requirements of the ADA specifications. But, due to triggering a flush by buttons rather than a lever, the toilet is not fully compliant.

With a choice of either a full flush of 1.6 gallons or a partial flush of 0.9 gallons, the Toto Aquia meets the stringent requirements for the EPA Water Sense. This means that over a series of tests the water consumption must be no more than 80% of the 1.6 GPF, i.e. no more than 1.28 GPF. TOTO Aquia is well within that requirement with an average of 1.1 GPF.

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5 – Saniflo Sanicompact Toilet

dual flush reviewThe Saniflo 023 SANICOMPACT is quite different from most standard toilets in that it uses macerating and a pump to remove waste, rather than flushing directly into the drainage system. This makes the Sanicompact 48 an ideal solution to fitting a toilet in areas where a standard flush toilet is impractical. A waste pipe hooks up from a sink to the toilet making it an ideal solution for building a half bath. The pump on the toilet can pump up to 9 feet in height and 100 feet horizontally, all through a 1” pipe.

The Sanicompact 48 does not use a conventional flushing system. Instead, once you press the flush button, the toilet fills itself with a set volume of water. Together with the waste, is drawn through macerating blades and pumped out through the 1” waste pipe.

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Flushing Mechanisms  

dual flush mechanismTo achieve highly effective flushes with smaller volumes of water, all the lower water-use toilets have an enhanced flushing system. The newer system varies from the manufacturer. Its water-conserving toilets use a siphon system that boosts the power of the flush.


In our best Dual Flush toilet reviews, we selected the best flushing toilet from the 100s available. We endeavored to explain what all the features mean to you as the consumer of the product.

The best dual-flush toilets will help you save water as well as money. They have a highly effective flushing system and other features than other toilets. Hopefully, this review will give you a deciding factor on what to best suit your needs.

We also recommend considering having a proper water filter or a reverse osmosis system for clean and safe water usage. have other toilet reviews as well that you might want to check out.

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12 thoughts on “Top 5 Best Dual Flush Toilet Reviews & Guide 2024”

  1. Our rough-in is 9 in. from the back wall (this is a “little house” for our church’s homeless outreach, and it was originally thought that an RV toilet would work, but they didn’t install a holding tank).

    So the rough-in is 9 in. from the back wall, and all the toilets at Home Depot and Lowe’s require 12 in from the back wall. (There was one that needed only 10 in.)

    Can you help us with a toilet?

  2. Hey man. I am huge toilet enthusiast. I would just go with biggest one. If it cost more it’s better. Make sure to use as much space and money as possible.

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