Best Flushing Toilets — Reviews and Buying Guide

Best Flushing Toilets — Reviews and Buying Guide

Whether you’re looking for a new toilet that matches your renovated bathroom or replacing the unit that has stopped working — you’re in the right place.

There are a lot of things to consider for choosing the toilet, but thankfully, we’ve done all the job for you and invite you to take a look at the five best flushing toilets, backed up with a detailed guide.

We’re sure that having read it, you’ll make your choice, so get cozy and dive right in!

Quick Picks

Editor’s Choice

2nd Best Choice — Best Affordable Pick

3rd Best Choice — Best Dual-Flush Option

Kohler K-3999-0TOTO CST243EF EntradaAmerican Standard 2886218.020 H2Option
  • One of the most powerful flushing systems;
  • Saves up to 20% of water
  • Perfect choice for those who want to go as green as possible;
  • Powerful 3-inch flush valve
  • Dual-flush system and siphon jet uses less water;
  • Easy to clean bowl

A Brief Word About Flushing Systems

Generally, all flushing systems fall into two major groups:

  • Gravity-assisted flush. The most common option that the water weight and gravity force to generate flushing pressure. The water flows from the tank into a toilet bowl and then into a snake-shaped trapway and discards all the junk. Often, gravity-assisted systems are accompanied by a siphon jet. Gravity flush systems are quiet, more affordable, and if something breaks, you can easily replace parts by yourself.
  • Pressure-assisted flush. In this type of flushing system water is forced into the bowl by pressurized air which is released via the canister flushing valve (or tower valve). This creates a larger pressure than in gravity-assisted systems and allows using less water for the same level of performance and minimized chances of clogs. However, pressure-assisted systems are often noisy and require more maintenance. Plus, they add to the final cost.

How Does the Flush Valve Type Impacts The Efficiency of a Toilet?

As you can see, the flush valve is a central element to the whole system, and depending on its type, you can get various outcomes.

So, there are several common types:

  • 2-inch flush valve. The most common option can be found in low-flow toilets and older models. The main problem with these valves is that they often cannot withstand water pressure in the modern water supply lines and wear out quickly, which increases the chances of leaks. So, if you have a toilet with this valve, you might probably want to upgrade it with a larger one.
  • 3-inch flush valve. Basically, it’s the same design as in the 2-inch valve, just a little wider. But even one inch can make a difference in efficiency. 3-inch valves are the most common in modern 1.28-gallon toilets, as they can help you make the most of the flush with much less water.
  • 4-inch flush valve. The widest option available today, this valve is common in gravity-assisted systems, but it can also feature a piston mechanism, which allows you to evacuate the whole tank and create a 360-degree flow (1).

5 Best Flushing Toilets

Best Overall — Editor’s Choice

Kohler K-3999-0
  • Class Five ® flushing technology is one of the most effective and eliminates waste within a single flush;
  • uses 1.28 gallons per flush and saves you up to 20% water;
  • the elongated bowl makes exploitation comfortable;
  • comes with 3 pre-installed tank bolts, which make installation easier;
  • slim yet sturdy design will fit any bathroom.
Kohler K-3999-0

Let’s kick-start our review of the best flushing toilets with this model by Kohler. The things that brought it to the top of the list are low water consumption, quiet operation, and Class Five ® flushing technology.

So, K-3999-0 is actually one of the most powerful flushing toilets on the market. It features the canister flush valve that packs a powerful punch and eliminates all the waste in a single flush. Plus, the bowl has a special coating that prevents the waste from adhering to it and maintains cleanliness.

Also, Kohler’s flushing toilet will save you water. It utilizes only 1.28 gallons per flush and can save you up to 20% of water use in the long run.

Finally, the slim design with an elongated bowl makes this toilet comfortable for users of all ages. And it can fit narrow and small bathrooms without eating up too much space.


  • One of the most powerful flushes on the market
  • Meets the EPA guidelines on low water consumption
  • Works for users of all ages


  • The seat is purchased separately
  • Is compatible only with 45-degree Y-fitting

Best Affordable Pick

TOTO CST243EF Entrada
  • low water consumption, meets WaterSense, CALGreen, and ADA standards;
  • 3-inch flapper valve creates a powerful flush with only 1.28 gallons;
  • easily fits compact bathrooms;
  • incredibly quiet operation;
  • siphon jet technology prevents bad odors.
TOTO CST243EF Entrada

The next contestant on this list of top-rated flushing toilets is the Entrada by TOTO. This compact model packs a powerful flush with only 1.28 gallons and meets all the water consumption regulations you can think of, such as WaterSense, CALGreen, ADA, and CEC. So if you planned to go green and lower your water consumption, this toilet may help you do just that.

Aside from being eco-friendly, the Entrada is also comfortable to use. It has a 3-inch flapper valve and siphon jet that stores extra water and makes the flush more effective. Plus, the siphon prevents bad odors and helps maintain a clean look.

Finally, this TOTO model might be a great pick for you if your bathroom is a bit smaller than the standard. Being only 14 inches wide and 26 inches long with a 12-inch rough-in, this toilet can easily fit smaller spaces without cluttering them.


  • One of the most efficient models on the market
  • 26-5/8” D x 14-3/8” W x 30” H with a 12-inch rough in make it an easy fit for smaller bathrooms
  • Quiet operation without any unnecessary sounds


  • Hardware for installation is sold separately
  • The rim is 16 inches high, so you might need a higher seat
  • ultra high-efficient toilet with partial flush utilizing only 0.92 gallons (full flush is 1.18 gallons)
  • siphon jet bowl technology and wide trapway help eliminate possible clogs;
  • EverClean bowl surface prevents the waste from adhering;
  • a convenient button flush actuator placed on top of the tank;
  • compact design in various colors that can fit in any bathroom.
American Standard 2886218.020 H2Option

If you’re looking for the best flushing toilet with dual-flush technology, stop right there because we found it for you. H2Option by American Standard is one of the most efficient flushing toilets, as it uses only 0.92 gallons for a partial flush and 1.28 gallons for a full flush.

The secret behind such low water consumption is the gravity-assisted flushing system and siphon jet. The siphon jet holds extra water, and the Powerwash rim creates a directed and solid flow that eliminates all waste. Plus, the bowl has an EverClean surface that prevents the waste from sticking to it and makes the process easier.

H2Option is available in three colors and features an elongated and round bowl configuration, so you can easily match it with your bathroom interior. Finally, the 16-½ rim makes it comfortable to use for everyone, including children and the elderly.


  • A cost-efficient option thanks to water conservation technologies, such as siphon jet and dual flushing system
  • EverClean surface repels the dirt and bacteria that cause odors
  • Operates very quietly


  • Might be a bit uncomfortable for users taller than 6 feet
  • The price may vary depending on the color

Best Wall-Mounted Flush Toilet

Swiss Madison Well Made Forever Ivy SM-WT450
  • an efficient dual-flush system with 0.8/1.28 gallons per flush;
  • soft close seat for a quiet operation;
  • adjust the height from 15 to 19 inches while installing to make it comfortable;
  • seamless and incredibly compact design available in White and Black colors;
  • all installation hardware is included in the purchase.
Swiss Madison Well Made Forever Ivy SM-WT450

Our selection of the top-rated flushing toilets wouldn’t be full without a wall-mounted model, so here’s the Ivy by Swiss Madison. It combines a sleek design, quiet operation, and a powerful dual-flush system that uses less water than similar models.

So, the obvious advantage of wall-hung toilets is that they can fit even into the smallest bathroom. Ivy does just that, with the dimensions being 20.47’’D x 14.57’’W x 12’’H. So if you need a tiny toilet, take a look at this model.

Another advantage of this super flushing toilet is its quiet operation. Since the tank is concealed behind the wall, you won’t hear any loud noises. Plus, the seat features soft-close and quick release technologies that add some comfort.

Finally, the Ivy is a high-efficient toilet and utilizes only 0.8 gallons per partial flush, which is less than in other models. This helps conserve water — and your savings — in the long run.


  • High-efficient water use and powerful flush
  • Incredibly quiet operation
  • Minimalistic design is easy to clean and maintain


  • Concealed tank and flush actuator are sold separately
  • The black model is almost 2 times more expensive

Best for Small Bathrooms

TOTO MS854114E Eco Ultramax
  • siphon jet and glazed trapway provide a powerful flush with only 1.28 gallons of water;
  • sleek one-piece design is easy to install;
  • gravity-assisted flush operates without any unnecessary noises;
  • soft close seat made of durable polypropylene for a more comfortable experience;
  • all details for installation are included.
TOTO MS854114E Eco Ultramax

Our final contestant in the selection of the best flushing toilets is the Ultramax model by TOTO. This is a one-piece toilet that combines the tank and the bowl in a single unit, which makes installation and cleaning much easier. 

Aside from that, the Ultramax features a 1.28-gallon, gravity-assisted flush with a siphon jet technology. This allows efficiently eliminate waste with less water and without any loud noises, unlike pressure-assisted toilets do. A soft-close seat adds to that quiet and comfortable experience. Plus, it’s made of durable polypropylene plastic and can resist dirt and bacteria, along with serving you for years to come.

Plus, TOTO’s dimensions make it an easy fit for taller individuals. It’s a bit higher than standard toilets — the rim is about 17 inches high — and features an elongated bowl that adds a bit more space.


  • Siphon jet, glazed trapway, and ergonomic bowl create a powerful flush with 1.28 gallons only
  • Operates quietly thanks to a gravity-assisted flushing system and soft-close seat
  • A good pick for taller individuals thanks to a higher rim


  • Since it’s a one-piece model, it might be heavy to lift
  • Doesn’t meet ADA water conservation standards

What Makes a Most Powerful Flushing Toilet: A Comparison of Different Technologies

While you’ve been reading all the flushing toilet reviews on the Internet, you probably stumbled upon words like ‘Tornado flush’ or ‘triple-jet action’ and wondered what do they mean.

Well, they all mean very similar things and just explain how the water is flushed from the tank.

  • PowerWash. This means that all the water required for flushing instantly drops from the tank and enters the bowl from all sides, thus creating a potent flow and removing all the waste. 
  • Tornado. Also known as  cyclonic flush, Tornado means that the water enters the bowl by two jets placed in the front and rear parts and creates a vortex-like flow.
  • Triple-jet action. Much like the previous one, except this time there are three jets instead of two.

All the technologies have roughly the same efficiency but the PowerWash seems to be the most common in both gravity-assisted and pressure-assisted systems. It can work with less water volume and eliminate all the junk within a single flush.

Other Things That Make a Good Flushing Toilet

Aside from choosing the right flush system and technology, there are a lot more things to think about when you look for a super flushing toilet. We’ve gathered them in a convenient list, so you can fill in the checks.

Rough-In Area 

The Most common bathroom size in the US is 35-40 square feet, which is basically a room that is 7-8 feet long and 5 feet wide. And you need to stuff a lot of furniture and appliances there without making it look cluttered.

The tricky part with the toilets is the rough-in or the measurement between the finished wall and the center of the mounting hole on a floor flange. This is a standardized measurement: all toilets in the US are offered in 10, 12, or 14-inch rough-in, with the 12-inch option being the most common.

And of course, this rough-in impacts the amount of floor space your toilet will occupy. So be sure to double-measure it before choosing a unit.

Bowl Shape

Today you can count on two bowl shapes:

  • Round. Takes up less space and offers a more accurate and compact design, but may not fit taller individuals.
  • Oblong, or oval. Generally considered more comfortable and common, but may not fit into smaller bathrooms, unless it’s a specifically designed compact option.

Water Consumption Efficiency

Water resources on our planet are limited, so it’s a good idea to start preserving them today. The US Geological Survey statistic showed that water usage in the US continually declines since 1980 (2), which means that the nation uses natural resources more responsibly. 

However, you can decrease the water use in your household if you choose a more efficient toilet. And that’s a pretty easy thing to do:

The WaterSense program started by the Environmental Protection Agency declares that all toilets installed after 1994, should have a water consumption of 1.6 gallons per flush (GPF) at most (3).

And today, the majority of toilets have even more low water consumption, mostly a 1.28 GPF for a single flush, which is about 20% more efficient than 1.6 GPF units.

Dual-flush models typically use 0.8-0.9 GPF for a partial flush and 1.28 GPF for a full flush.

So, check for these numbers while shopping.

One-Piece or Two-Piece?

Now, let’s take a look at configuration because it’s another important thing. 

Modern toilets come in two designs:

  • one-piece — the tank and the bowl molded into a single unit;
  • two-piece — the tank and the bowl are separated parts and can be joined either with the bolts or water supply pipes.

A one-piece unit is easier to install because it requires less work. However, it’s also heavier than a two-piece unit, so you might still require help.

According to flushing toilet reviews, two-piece toilets are more popular. They’re often significantly cheaper than a one-piece but are a bit harder to mount. Plus, the connection between the tank and the bowl is often a place where dirt can hide, and it might be problematic to clean.


A siphon jet is a molded pocket that holds some extra water until the flush is initiated. When that happens, the pressure pulls the water from this pocket and creates extra flow for a more efficient waste discharge. Also, this water layer acts as a barrier and prevents bad odors from your sewers from getting into the bathroom.

ADA stands for the ‘Americans with Disabilities Act’ and is a law that helps make life better and more accessible for individuals with disabilities, chronic illnesses, or the elderly. For flushing toilets, aside from 17-19’’ seat height, ADA advises using pressure-assisted flushes instead of gravity-assisted, as it helps remove waste more efficiently. Also, give preference to the button flush actuator instead of a trip lever on the side, since the button is easier to push without straining your hands.

Since most of the US toilets meet the US EPA flushing standards and operate either with 1.6 gallons or 1.28 gallons per flush, you can install a single-flush toilet in your bathroom. However, if you want to reduce the water consumption even further, you may want to install a dual-flush unit that uses 0.8-0.9 gallons per flush for liquids, and 1.28-1.6 gallons per flush for solids.

The cyclonic flushing system lets the water in the bowl via 2 inlets placed on the front and rear sides of the bowl rim. The tornado flushing system uses three jets for letting the water in and ensures more surface coverage and efficiency.

A gurgling sound usually means trouble. It appears if the drain system or a sewer pipe is clogged, and the waste cannot pass freely through the pipes. You might not be annoyed by it at the start, but you still need to fix it because if the clog continues to build up, the negative pressure might create a backflow which will result in a disaster. The methods you can try to fix the problem can include plunging the toilet or using a plumber’s snake to clean the drain system. Or, if none of that worked, call the plumber and let him do the job.

Owner - Mary O. Frazier


Mary O. Frazier

Mary O. Frazier — lead author of our website, connoisseur of interior design and plumbing. I will tell you the most interesting and important facts about household items. She reads a lot, plays chess and collects useful information for you. You can read more about her here.

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