Toilets are essential in our everyday lives. Unfortunately, some toilets can be really irritating and loud, which may be bothersome to you and others.
The sound of a loud flush can wake someone up or stifle someone else's conversation.
At times, it may even be embarrassing to return to a dining room full of people after they all heard you flush.
The sounds depend on the toilet's type, flushing system, and features.With a quiet flush toilet, you can balance a powerful flushing capacity while keeping noise to a minimum, which saves you the embarrassment of announcing that you've just been to the bathroom.
There are considerations and features you need to understand before choosing the right model, and we're here to help.
Whether you prefer a one-piece design or an elongated version, we've got all the details for you. Now, say goodbye to loud flush toilets and slamming toilet seats.
At A Glance: Quiet Flush Toilets Comparison And Recommendations
Before we go in depth review, here Are The Sneak peek of the 5 Best Quiet Flush Toilets For Home.
- 1. Overall Best Quiet Flush Toilet: WOODBRIDGE T-0001 Dual Flush Toilet
- 2. Best Budget Quiet Flush Toilet: Kohler K-3987-47 Dual-Flush Toilet
- 3. Price-to-Performance Quiet Flush Toilet: American Standard 2988.101.020 FloWise Toilet
- 4. Best Quiet-Seat Design: Toto MS854114ELG#01 Eco Ultramax Toilet
- 5. Quiet Flush Toilet with Best Installation: Kohler K-3978-0 Wellworth Toilet
Quiet Flush Toilet
1: WOODBRIDGE T-0001 Dual Flush Toilet
2: Kohler K-3987-47 Dual-Flush Toilet
3: American Standard 2988.101.020 FloWise Toiletn
4: Toto MS854114ELG#01 Eco Ultramax Toilet
5: Kohler K-3978-0 Wellworth Toilet
Detail Guide of The Best 5 Quietest Flush Toilets in 2021
Don't you hate it whenever the flush acts as a sign that you've used the bathroom?
Worry no more, because here are the best quiet flush toilets that will let you use restrooms in peace.
The Woodbridge T-0001 Dual Flush Toilet becomes our top pick as the quietest flush toilet simply because of its eco-friendly 1.6 GPF for solid waste and 1.0 GPM for liquid waste.
There's also a dual flush option, which means you can lessen water depending on the type of waste. In effect, you don't have to be concerned about noise nor water consumption.
Since its inception in 2005, Woodbridge has become one of the fastest-growing toilet brands in the world.
In fact, it specializes in high-end kitchen and bathroom products. At first glance, you'll think that the luxurious design comes with a high price tag.
Surprisingly, its products are among the most reasonably-priced on the market, including this particular model.
At a generous price, this model boasts a siphon flushing system that efficiently cleans both liquid and solid waste.
Since this is a dual-flush toilet, you gain a drastic reduction in flush volume while boosting flush power.
If you hate residue sticking to the bowl's surface, you'll like this toilet's fully glazed, porcelain bowl.
These features work together to ensure efficiency and power. In this way, you won't have to deal with clogging.
Because of this quiet flush toilet's fantastic one-piece design, both the bowl and toilet tank are integrated into a compact and sleek design that can fit most bathroom sizes.
What's more, the skirted design also means no grooves or corners.
It even makes use of a chrome flush button to provide antimicrobial benefits. In effect, cleaning and maintenance are easy tasks.
For ease of usage, this quiet flush toilet has an elongated bowl that comes with a comfortable height of 18 inches from floor to the seat.
Different users won’t have problems using this, making it a perfect toilet for everyone, including kids, the elderly, and people with disabilities.
Additionally, the stainless steel durable seat hinge and automatic quiet-close seat bid goodbye to noisy seat slamming.
Although the Woodbridge T-0001 Dual Flush Toilet is a bit heavy at 129 pounds, installation remains simple because of its standard 12-inch rough-in.
The package includes the pre-installed soft closing toilet seat, pre-installed water fitting, high quality wax ring, floor bolts, and a wrench tool for tightening bolts in narrow spaces.
What we also like is that aside from an installation video, there's also an illustrated step-by-step instruction guide.
As a takeaway, you hold a five-year warranty should you face any problems.
If you are looking for something quiet yet has a luxurious vibe, then the Woodbridge T-0001 Dual Flush Toilet is the perfect toilet for your bathroom.
This top-rated model combines a siphon flushing system, quiet-close action, and skirted design to create the best quiet flush toilet.
If you need a budget toilet for a small bathroom, then the round-bowl design of the KOHLER K-3987-47 Dual-Flush Toilet is the perfect choice for you.
Despite being a compact model, its efficiency helps boost flushing power while maintaining noise at a minimum.
Like most of Kohler's toilets, this two-piece model brags a Class Five flushing technology to provide exceptional bulk-flushing performance.
The large flush valve enables the rapid release of water with the assistance of a direct-fed jet to keep flushing sounds quiet.
The canister flush valve also lets water flow into the bowl from all sides, boosting the flush's power and effectiveness to keep the bowl sparkling clean.
Depending on your necessity, you may choose between one of the two flushes. The 1.1 GPF releases less water, and consequently, less noise.
The 1.6 GPF releases more water, but won't create disturbing noises because of the rapid suctions that easily drains the water.
Since the dual-flush lever is on the tank's side, the tank's top part can serve as storage.
When it comes to consumption, the KOHLER K-3987-47 Dual-Flush Toilet has the ability to clear all waste in a single flush, making this quiet flush toilet EPA Water Sense certified.
This certification means that you can qualify for rebates from water bills.
It follows the standard rough-in of 12 inches from the wall to the center of the waste pipe.
For convenient installation, you need a new trap seal and nuts. During our tests, we found that you can tighten the three mounting bolts to adjust the level.
In addition, it features a DryLock fast install system, which means a socket wrench can secure the seat to the tank.
This leak- and fool-proof mechanism makes installation user-friendly, you won't even need to hire a professional plumber.
Furthermore, this quiet flush toilet makes use of vitreous china as coating, resulting in a high gloss finish.
The main benefit is that it has a better resistance against spills, scratches, and stain.
We can attest to the material's durability, so you won't probably need to use the warranty.
Although it's worth noting that the package comes with a one-year limited warranty.
The KOHLER K-3987-47 Dual-Flush Toilet combines water savings with powerful flush performance.
Its innovative two-tone flush lever offers the choice of 1.1 or 1.6 GPF, resulting in a high-efficiency, yet silent flushing mechanism.
American Standard has been manufacturing quality plumbing fixtures since 1929.
It has been setting and resetting the standard for healthy, safety, and hygiene products, and that includes the American Standard 2988.101.020 FloWise Toilet.
The one-piece style may look plain, but its simplicity guarantees total effortless solutions to your bathroom needs.
It features a patented Cadet 3 flushing system that only uses 1.28 gallons of water per flush, which is a fraction of the amount used by other models.
With the addition of a siphon action jet and FloWise technology, you can ensure the highest level of water conservation available.
In effect, you won't hear too many sounds coming from the draining of water.
More than that, the American Standard 2988.101.020 FloWise Toilet offers 16.5 inches of comfortable height alongside a compact, round front style that fits perfectly in smaller bathrooms.
There's also a slow-close seat and lid for silent, no slam convenience.
Another special feature is the EverClean technology. True to its name, this feature inhibits the growth of odor- and stain-causing mold, mildew, and bacteria on the surface.
It also incorporates a power wash rim that scrubs the bowl clean in each flush.
Besides, the concealed trapway removes crevices and curves that make cleaning quick and easy.
Aside from the standard rough-in size of 12 inches, this quiet flush toilet requires no tools for installation.
The good news is that hand tightening can fix most components.
This product's primary material is porcelain, which equates to durability and easy cleaning.
As a bonus for maintenance, you get various types of warranty in a single package.
There's a lifetime warranty on the chinaware, five years for all mechanical parts, and one year for the toilet seat.
The American Standard 2988.101.020 FloWise Toilet combines comfort, power, and smart design in a seamless, one-piece style.
Its high efficiency and low consumption flushing conserves water and drowns noise at the same time.
With a large siphon and pressurized toilet rim, flushing sounds are quieter than usual.
The Toto MS854114ELG#01 Eco Ultramax Toilet optimizes a gravity flushing system with the help of a three-inch flush valve that is 125% larger than typical two-inch flush valves.
Because of its broader size, flushing of 1.28 gallons of water becomes faster yet quieter and consumption-saving.
The siphon jet-flushing actions ensure you get to conserve water while gaining a better flushing force.
With a fully glazed trapway, this one-piece quiet flush toilet is an eco-friendly choice for households.
Moreover, a SoftClose seat design further dampens noise every time you use the toilet.
The SoftClose feature is Toto's latest innovative smart seat technology that combines comfortable ergonomic design and molded bumpers.
A substantial, high-impact plastic makes the seat unique, and subsequently, reduces injury and annoying toilet seat slam.
With a 17-inch height from the floor to the bowl rim, it follows the standard height requirements for toilets under the Americans with Disabilities Act.
Aside from an elongated front bowl with a high-profile tank and a chrome trip lever, the Toto MS854114ELG#01 Eco Ultramax Toilet has an ADA-compliant height of 17 inches from the floor to the top of the toilet seat.
With a rough-in size of 12 inches and top tightening mounting bolts, installation remains easy.
Make sure to mount the large tank-to-bowl gasket over the flush valve outlet on the underside of the tank.
Hand-tighten all loose nuts evenly until the tank sets snug on the bowl.
If you hate bacteria buildup in a toilet's crevices and ridges, you'll love the CeFIONtect component, which is a glaze present on all Toto ceramic products.
This gives every item a long-lasting finish that prevents the buildup of waste matter, limescale, and mold.
In this way, you don't need to keep on flushing the toilet to clear the bowl.
In addition, Toto has incorporated SanaGloss, which aims to stop you from using foul-smelling chemical cleaning agents.
The gloss provides a smooth surface that inhibits mold and debris from clinging.
Hence, this toilet can go for more extended periods of time without deep cleaning and maintenance.
The Toto MS854114ELG#01 Eco Ultramax Toilet is a simple and quiet solution for effectively flushing 1.28 gallons of water.
It has a generous set of components that create an overall quiet flushing operation.
From the tank cover, fittings, chrome plated trip lever, and SoftClose seat, every flush becomes quieter.
This Kohler Wellworth toilet delivers a 1.6-gallon flush, ensuring that one move of the left-hand polished chrome trip lever will flush down all types of waste.
Even with a Class Five gravity-flush system, you can contain the sounds in the bathroom.
This is possible due to the canister flush valve that delivers the flush water at high pressure.
Since it has a Class Five flushing system, no waste can escape from the bulk of water, leaving your toilet clean after each use.
As you press the trigger, the extra-large flush valve releases water with a direct feed.
As a result, you don't have to worry about cleaning or noise.
The elongated bowl structure and standard-height guarantee comfort, making sure you can sit on the bowl for minutes without your thighs feeling numb.
Aside from that, this quiet flush toilet's primary material is vitreous china, which is an enamel coating that makes the toilet denser and shinier yet tougher.
The shape and color may look plain, but some curves on the cistern enhance the overall look.
The ergonomic size of the Kohler K-3978-0 Wellworth Toilet makes it one of the most space-saving models on the market.
Since this product is a two-piece toilet, it's worth knowing that the rough-in size is 12 inches.
At 3.2 ounces, this is one of the most lightweight toilets, so you won't encounter difficulties when mounting it on the floor.
Speaking of mounting, the package includes a three-bolt installation. This means that the pre-installed tank bolts save installation time.
As it is a two-piece toilet, you need to install the toilet first before placing the cistern.
It's also worth noting that this quiet flush toilet had the fastest shipping we've encountered.
The bonus part? The package includes extra materials that match the necessary products for the installation.
After some time, you may encounter problems with the lever.
You can solve this immediately by removing the tank cover and cleaning the mounting nut.
If you find a buildup of dirt or lime around the mounting it, all you have to do is clean it with a brush and vinegar for the handle to function again smoothly.
Don't worry because if you regularly clean and maintain this quiet flush toilet, you might not even face this dilemma.
Even if this is one of the most basic and inexpensive toilets in the Kohler Wellworth series, the modern design, water-saving features, and functionality won't let you down.
With such features, the Kohler K-3978-0 Wellworth Toilet is worth buying for its price.
It is a two-piece, standard height toilet with a single yet powerful flushing system that delivers a tremendous bulk waste flushing performance, and subsequently, best-in-class bowl cleanliness and quietness.
How We Tested Products
It's easy for brands to claim that they are offering quiet flush toilets. In reality, keeping a toilet quiet depends on the features.
To help you understand everything, we're going to discuss the factors you need to consider in two stages:
Stage 1: Delivery and Installation Aspects
This stage includes packaging, unboxing, and delivery. We identified that 20 to 40 minutes is the average time necessary for an average person to install a toilet.
Nobody wants to spend hours installing a flush toilet, which means you must steer away from a model with a complicated installation process.
The good news is that most modern toilets come with instructions that sometimes you don't need professional help.
Based on the products we've tested, here are general directions to give you an idea:
- 1The standard rough-in measurement for a toilet is 12 inches. Fortunately, all five toilets can be easily measured from the distance from the wall behind the toilet. We were also able to check the diameter and shape of the base to ensure the toilet covers the allotted space, especially if you are replacing an old toilet.
- 2If you have an old toilet, turn off the water supply to the toilet. Remove the water by flushing it repeatedly. Make sure to disconnect the supply hose and tank.
- 3To remove the old toilet, unscrew the two bolts that connect it from the floor.
- 4All five models had hardware and fittings included in their packages. So, installing the gasket and wax seal varied from one model to another.
- 5Based on each manufacturer's instructions, we were able to install the adapter/offset collar of the new toilet to the closet flange, letting us connect the fitting to the drain line.
- 6We installed all bolts to put the toilets in place. Subsequently, we installed the rubber gasket, attached the tank to the bowl, and placed nuts to keep everything in place. Remember that this is very important to ensure there are no loose parts that will make noise whenever you flush.
- 7Put the toilet in place. Install any necessary bolts.
- 8After that, we were able to connect the supply hose using each model's installation kits.
- 9After reconnecting the waterline, that's the time you can install the toilet seat.
By ensuring everything is set and well-installed, you can reduce the chances of components getting damaged, and consequently, rusting and noisiness in the long run.
Stage 2: Functionality
For this stage, we're going to expand on the features that can make a toilet more silent. We have to balance efficiency and quietness.
There's no use for a quiet toilet if it cannot function in the way it's supposed to do.
Rough-In (Identifying the Size)
Toilets come in different sizes, which means you have to buy a toilet that will fit the designated area in the bathroom.
Rough-in is one of the most essential factors to consider when choosing a quiet flush toilet since incorrect measurement would mean the toilet is either too small or too big for your space.
The simplest way to do this is by using a measuring tape to determine precisely how big the distance is between the wall to the center of the toilet's floor drain or waste outlet's bolts.
Most toilets require a rough-in of around 10 to 14 inches.
There are two options to choose from: round and elongated. These shapes have advantages as well as downsides.
Round toilets are smaller and compact, which means they take less space and are much appropriate for smaller bathrooms.
However, they offer less thigh place, which may be uncomfortable for some people.
On the other hand, round toilets are much smaller— and well, rounder.
Meanwhile, an elongated bowl provides more thigh space, making sitting a comfortable experience.
On the flip side, the larger frame means it will take more space in your bathroom.
Toilets need regular cleaning, but if the material is not easy to clean, maintenance can be tedious.
Most models use vitreous china, which is a reliable option because of the material's durability.
However, it also leaves a place for small pockets on the surface for mildew, dirt, and mold to get stuck in.
The good news is that manufacturers add gloss, which is a special coating that prevents elements from getting stuck on those pockets.
This coating also makes the bowl much cleaner with each flush because it stops waste from sticking. With gloss, anything you flush will slide off the toilet easily.
Most toilets use around 1.2 to 1.6 gallons per flush. To help you save water, it's not advisable to go beyond this amount.
If you hit two gallons, you're wasting resources, and your water bill will go up.
Note that toilets with 1.2 GPF need more pressure to be efficient, which sometimes causes them to produce more noise.
If you want to keep noise to a minimum, choose one with 1.6 GPF.
Quiet Flush Toilets FAQs
What Causes the Noise in a Toilet?
A toilet makes noise for a number of reasons. The usual sounds you'll hear come from the pipes, toilet valves, or fill valve.
Calcium buildups in the pipes obstruct water flow, making whooshing sounds whenever you flush. Leaky fill valves likewise produce a whistling sound.
When the fill valve's diaphragm gasket gets worn out or old, it loses elasticity, and subsequently, efficiency.
What Should I Pick: Standard, Wall-Hung, or Tankless?
There's a variety of toilets to choose from, and selecting the quietest one may depend on your preferences.
- First, there's the standard type, which you'll most likely see in houses because they are the least expensive. They are usually elongated or round, and must be connected to the ground.
- Next, a wall-hung toilet is preferable if you lack bathroom space. You can install this type of toilet on the wall to provide you more floor space. The tank should be inside the wall, so it might take a bigger budget to install the toilet.
- Meanwhile, a tankless toilet is recommendable if you don't want to rely on a tank. You can connect the toilet directly to a pipeline, which significantly reduces noise in comparison to toilets with tanks.
- Lastly, it's best for you to choose a corner toilet if you want to save space. This type is more small and compact. Although the flushing quality is not that high, the flushing sounds become much quieter than others.
Which is the Best Flush System?
The best flush type depends on your needs and situation. The flushing system determines the difference in the noise.
- Single flush: A one-flush mechanism flushes all kinds of waste with the same amount of water, whether it's liquid or solid waste.
- Dual flush: Enables you to select from a half flush and a full flush, letting you save on water at the same time. You don't have to use a full flush for liquid waste, which makes flushing quieter. On the other hand, full flush toilets are suitable for solid waste.
- Pressure assisted toilets: Optimizes pressurized air to force water to the bowl, making the flushing system quieter and less likely to clog.
- Gravity flush: Uses water to create a flushing pressure that forces the waste from the bowl to the trapway. It takes a siphon action that cleans the toilet bowl.
Double cyclone: A new technology from some brands that utilizes less water per flush yet has the power of full 1.6 gallons per flush.
Tips and Reminders to Make a Flush Toilet Quieter
There are toilets with mechanisms that are loud in nature, but with few modifications, you can make the toilet quieter.
Keeping everything tight is an excellent way to make a toilet more silent. This is why the installation process is vital.
Pipes and clamps are usually the ones that tend to get loose over time. Use a socket wrench and a screwdriver to ensure everything is nice and tight.
If the toilet is too noisy, it's possible that the water coming through the valve has too much pressure.
Adjusting and controlling the flow of water can significantly reduce the noise when flushing.
Since the sounds may come from the tank, you can also block the sounds coming from it.
Insulating the tank may mean using adhesive foam to seal the frame cracks and guaranteeing the tank contains all sounds.
In general, cleaning and maintaining the toilet preserves the quality and functionality of a toilet.
For example, if you let buildups form, it may cause a blockage. If you can't clean the toilet every day, do it as least once a week.
When cleaning, use soft cloths or sponges to clean the surface. Always rinse any cleaning solutions immediately after cleaning.
Do not soak the bowl with abrasive cleaners like acid, chlorine, ammonia, and bleach that can damage the fill and flush valves.
Likewise, it's not advisable to use wool, wire brushes, or steel that can permanently scratch the surface.
Finding the best quiet flush toilet can be a daunting task, but with the information and tests we've conducted, you can determine what type, flushing system, and features you'll need.
Pick one from the five quiet flush toilets from this list, and you will surely enjoy peaceful bathroom breaks.
Jessica is a Acoustical Engineer, currently based in the San Francisco Bay Area in California. After graduating from her degree in Master of Engineering degree in Acoustics from Solent University in 2014, Jessica worked for a few companies before She will be blogging about her past and current experiences in the studio and sharing her journey as she pursues her career goals. She enjoy the balance of work inside and out of the office, solving practical problems on a daily basis as every project is different and requires a different solution, the variety of work (sound insulation testing, background noise survey, mechanical plant commissioning, external plant assessment, plant room breakout assessments) and the mix of independent and team work.