What Is A Dual Flush Toilet?

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Last Updated on September 9, 2022 by acechapman

You could be flushing your toilet with at least 3.5 gallons of water per day. A dual flush toilet system can help you reduce water waste. You may use a lot of water if you have a large family or frequent the toilet frequently with regular flush toilets.

Dual flush toilets conserve water. This modern toilet will not only conserve water but also save you some money on your monthly bills. Today, we will tell you everything about dual flush toilets.

How Do Dual Flush Toilets Work?

On average, 20 gallons of water are flushed each day. However, this number can be drastically reduced if you have dual flush toilets. This toilet was created to use a low amount of water per flush.

You now use only 1.6 gallons instead of 3.5 gallons per flush. Two flush options are available for toilets: one for liquids and one for solids. This ensures that you only need the right amount of water each time you use it.

what is a dual flush toilet

Dual Flush Toilets Pros And Cons


Saves Water

Did you know that a single household could save as much as 4000 gallons per year? Dual flush toilets were designed to conserve water. This directive conforms to the National Energy Policy Act, which requires that every toilet use less than 1.6 gallons of water per flush.

The toilet’s smaller volume uses less than 1.1 gallons per flush. These two flush volumes are also what give the toilet its name.

Saves Money

Dual flush toilets can save you money and help you conserve water. You can think about it: your water bill is calculated based on how many liters you use each month or annually. You can save some money by adding a dual flush toilet in your shallow baths and shorter shower time.

In most states, you can get a rebate for buying a flush toilet that has an approved HET and a WaterSense label. The WaterSense label will be found on toilets made by common manufacturers such as American Standard, Caroma, and Toto.

This label will indicate that your toilet is a green purchase. It also indicates that the toilet is an efficient performer. These toilets are affordable and you can choose from many prices. You can choose the one that suits your lifestyle and budget.

Powerful Flush

Dual flush toilets are also extremely efficient. The high-efficiency toilets can flush up to 350g of waste. The high-efficiency toilet flushes so well that many users have no reason to use the low flush option.

Rarely Clogs

You can be confident that your toilet will flush well and you won’t have any problems. Many of these toilets use gravity to eliminate waste from the trapway. The trapway’s size is also designed to minimize clogging.

Great Appeal

Modern flush toilet designs are common. They are sleek and can be incorporated into any bathroom design. They are available in many styles and colors to suit individual tastes.


Needs A Professional Installer

It might frustrate DIY enthusiasts to learn that a professional plumber is needed to fix your toilet. Some dual flush toilet models are difficult to install. Before you buy your new toilet, make sure to check how easy it is to install.

You Need To Get Used To Dual Flush Buttons

Most toilet models don’t clearly label the low and high-volume flush buttons. It might take some getting used to the dual flush toilet. It is easy to get a quick overview of the model.

Difficult Cleaning 

If you choose the light flush volume option, it is easy to leave residue in your bowl. You might have to clean your toilet less often than if you had a traditional design.

Dual flush toilets have many advantages that outweigh their disadvantages. They are a great way to save money, conserve water and reduce waste. You should familiarize yourself with the various types of toilets available before you make a decision to remodel your current one.

Types of Dual Flush Toilets

Each toilet type has its advantages. Consider and compare the functions of each type of toilet to find the right one for you.

One-Piece Dual Flush Toilet

This design unites the bowl and tank into one unit. One-piece toilets are becoming more popular due to their significant benefits. These toilets are easy to clean, as they have fewer corners and crannies.

These toilets also have less space for bacteria and other odor-causing germs. This type of toilet design looks sleeker and is more suitable for modern bathroom decor. This type of toilet design has another advantage: the flush and fill valves are extremely strong. This makes it less likely that there will be any leaks or repairs. This makes it heavier, more expensive, and more difficult to install than other toilets.

However, their advantages are outweighed by the fact they are more durable and manageable.

Two-Piece Dual Flush Toilet 

A two-piece toilet has a separate tank and bowl. Because it is easier to transport and repair, this design is more popular than a one-piece. The toilet’s internal parts can be accessed quickly, but they are less sturdy than the one-piece design.

You have the option to choose a two-piece model. It comes in a variety of sizes and styles. They can be used to create unique bathrooms or other interior designs. This type of toilet is also more affordable than other models of toilets.

Wall-Mounted Dual Flush Toilet

The wall-hung toilet, unlike the other types, is mounted on the wall. The toilet’s internal components are generally hidden behind the wall. This allows you to save space in your bathroom and floor.

The toilet bowl hangs from a wall and allows for easy cleaning. Modern floating designs are also appealing to the eye. You have the option to personalize the space because there is an open area underneath.

This type of toilet, however, is more costly, more difficult to fix, and more difficult to install.

what is a dual flush toilet

Factors To Consider When Buying Dual Flush Toilets

These are all the other things you need to consider before buying a dual toilet type.


When purchasing a dual flush toilet, the first thing to consider is the material. Toilets are usually made of two materials: porcelain and plastic. Porcelain is the most popular type because it is easy to make and has a watertight seal.

Porcelain is very strong. Because it is hard to make high-quality plastic toilets, plastic is rare. Because it is difficult to incorporate the bells and whistles of porcelain into a highly resilient plastic material, smart toilets are often made.

Smart toilets will also be more costly due to the manufacturing difficulties and additional features such as night lights, heated seats, and automatic flushing.

Flush Mechanism

The flushing mechanism is what makes the dual flush toilet unique. The traditional toilet only allows one flush for liquid and one for solid waste. The dual flush, however, is different because it offers a flush option that you can use for both liquid and solid waste.

The liquid flush also uses half of the water that you would use for solid waste. A special flush valve regulates how much water remains in the tank. Many valves have special components that are specifically designed to release different water volumes.

This design will ensure that water conservation is observed, thereby saving water every year.

Water Consumption

Your household water consumption is approximately 30 percent. Your toilet is the primary source of home water consumption. A healthy person will eliminate liquid waste four times faster than they would solid waste. This means that they use at least twice as much water to flush out waste with a dual flush system toilet.

Dual flush toilets will ensure that you don’t waste any water. You can save at least 67% if you use only 1.0 gallons of water to flush the fluids. This can save you up to 20 percent of your water bill.

Shape and Size

Elongated and round-shaped bowls are available. Round toilets are smaller by about 1 to 3 inches. They are also less expensive than their longer counterparts. This toilet is also compact and can be used in small bathrooms.

These bowls also take up very little space in your bathroom. This type of bowl has another advantage: it is easier to follow the Americans with Disabilities Guidelines. The toilet must have at most 2 inches of frontal space.

However, an elongated bowl is more comfortable than a round one. Despite being slightly more costly, they are still very popular. You will need to have a longer bathroom.


The elongated, bowl-shaped toilets offer more comfort than their round counterparts. It would be helpful to consider the height of the toilet that you purchase. For most toilets, the standard height between the floor level and the seat rim is 14.5 inches.

This height is ideal for children, as well as people of average or slightly shorter height. A taller toilet is recommended for people with disabilities, restricted mobility, or who are very tall. In this instance, the best height would be between 17 and 19 inches.

According to the ADA standard, this comfort height is for tall people. This comfort height is also suitable for people with limited mobility or those who can’t bend or squat. Comfort height is ideal for those who struggle to stand at low levels.


There are many styles to suit your needs and preferences to choose from, including modern, transitional, traditional, and modern dual flush toilets. Additionally, there are many types of dual flush toilets, which add variety.

Keep in mind that your bathroom’s appearance will be affected by the type of toilet you choose. One-piece toilets, for example, make the bathroom appear sleeker. They are therefore ideal for contemporary and modern homes.

Wall-mount toilets are a great choice for modern and contemporary homes due to their clean, sleek design. Two-piece toilets, on the other hand, offer more design options. They will complement any interior design style you may have.

Most toilets come in a standard white color. Depending on which brand you choose, you can get different colors and shades. There are many shades of off-white, as well as white hues. You can also get antique or glossier finishes.


How much do you want to spend? You must decide how much money you are willing to spend before you start shopping for your next toilet. There are many brands and types of toilets on the market. The price of a toilet is usually between $200 and $800.

Set a price and stick with it. You can expect more features from the most expensive toilets. You should also consider the cost of installation as you may need to hire a professional for some toilets.

Wrapping up

You now have all the information necessary to buy a dual flush toilet. Don’t hesitate to get one for your bathroom. You will also save water by conserving it. Even though renovations may cost you a lot, they will help you save a lot in the long term.

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