SOTOMO One-Piece Dual-Flush Toilet Review: 1000-Gram MaP Performance, Rimless Flushing, and Easy-Clean Design

A modern toilet should do more than look clean and contemporary. Flushing performance, water use, bowl shape, seat height, ease of cleaning, and installation all affect how well it performs in everyday life.

The SOTOMO elongated one-piece toilet is designed around that combination. It uses a skirted one-piece body, rimless tornado-style flushing, a dual-flush mechanism, an elongated seat, and a listed 1000-gram MaP flushing score. Its dimensions are also relatively compact for an elongated model, making it potentially useful in bathrooms where space matters but comfort is still a priority.

The toilet is marketed as combining modern styling with efficient water use, but the most important reasons to consider it are practical: strong stated flushing performance, fewer exterior crevices to clean, a quick-release soft-close seat, and a complete installation package that includes several commonly needed components.

What Is the SOTOMO One-Piece Toilet?

The SOTOMO is a floor-mounted, one-piece elongated toilet with a skirted base and dual-flush system.

According to the supplied specifications, it measures approximately 28.4 inches deep, 15.5 inches wide, and 26.6 inches high.

The seat height is listed at approximately 16.8 inches, while the elongated seat measures about 18.43 inches.

The toilet uses a dual-flush system rated at approximately:

• 1.1 gallons per flush for the lower-volume setting
• 1.6 gallons per flush for the higher-volume setting

The manufacturer states that the combined average is approximately 1.28 GPF.

One-Piece Construction

A one-piece toilet combines the tank and bowl into a single ceramic body.

This differs from a traditional two-piece toilet, where the tank is bolted separately to the bowl.

One-piece construction can provide a cleaner visual appearance and eliminate the joint between tank and bowl where dust and residue often collect.

Why One-Piece Toilets Are Easier to Clean

The lack of a tank-to-bowl seam means there are fewer tight spaces to scrub.

That is especially useful in bathrooms where the toilet sits close to a wall or vanity.

A one-piece design can also make the fixture look more streamlined and substantial.

Skirted Trapway Design

The toilet uses a skirted exterior.

Instead of exposing the curved outline of the internal trapway, the sides are enclosed behind smooth ceramic panels.

This can significantly simplify exterior cleaning.

Traditional toilets often collect dust around:

• Trapway curves
• Bolt areas
• Base contours

A skirted body reduces those hard-to-reach recesses.

Modern Elongated Bowl

The SOTOMO uses an elongated rather than round bowl.

Elongated toilets generally provide more seating surface and can feel more comfortable for many adults.

The source lists an approximately 18.43-inch elongated seat, giving the user more front-to-back room than a compact round bowl.

Elongated vs. Round Toilets

A round toilet usually takes up less floor depth.

An elongated toilet generally offers:

• More seating room
• A more conventional modern profile

Because this SOTOMO model measures approximately 28.4 inches deep, it attempts to maintain elongated comfort without becoming excessively long.

Check Bathroom Clearance

Even a relatively compact elongated toilet should be measured carefully.

Before purchasing, check clearance from:

• Front wall
• Vanity
• Shower door
• Bathroom door

A few inches can make a substantial difference in a small bathroom.

16.8-Inch Seat Height

The listed seat height is approximately 16.8 inches.

That places it somewhat higher than many traditional low-profile toilets while remaining below some taller chair-height models.

A moderately elevated seat can make sitting down and standing up feel easier for some users.

Comfort Height Is Personal

Higher is not always automatically better.

Seat height should be considered alongside:

• User height
• Leg length
• Mobility

Shorter users may prefer a lower bowl, while taller adults may find a higher seat more comfortable.

1000-Gram MaP Flush Rating

One of the standout claims is a 1000-gram Maximum Performance, or MaP, flush score.

MaP testing is commonly used to evaluate how much standardized solid material a toilet can clear in a single flush under test conditions.

A 1000-gram score is at the high end of the commonly published MaP scale.

What a High MaP Score Means

A strong MaP result suggests that the toilet has been designed to clear a substantial waste load under standardized testing.

It can be a useful comparison metric when shopping for flushing performance.

However, real-world performance also depends on factors such as:

• Drain condition
• Installation
• Water pressure where relevant
• Waste characteristics

So a laboratory score is informative, but it is not an absolute guarantee that clogs will never occur.

Rimless Tornado Flush

The toilet uses a rimless, tornado-style flushing system.

Instead of relying on many small holes hidden under a traditional rim, rimless toilets direct water around the bowl through larger channels.

This can create stronger circulation while also eliminating one of the hardest areas of a conventional toilet to clean.

Why Rimless Bowls Can Be Easier to Maintain

Traditional rims can hide:

• Mineral deposits
• Buildup
• Residue

A rimless bowl exposes more of the flushing surface, making it easier to see and wipe clean.

That can be particularly useful in hard-water areas.

Dual-Flush Operation

The toilet provides two flush volumes.

The lower setting uses approximately 1.1 GPF, while the larger flush uses approximately 1.6 GPF.

This allows the user to choose less water for lighter waste and a larger flush when more clearing power is appropriate.

Water-Saving Potential

Dual-flush toilets can reduce water use when the lower-volume option is used appropriately.

Actual household savings depend on:

• Number of users
• Flush frequency
• Which button is selected most often

The manufacturer lists an average consumption of about 1.28 GPF.

WaterSense Claim

The supplied description states that the toilet complies with WaterSense criteria.

Because certification status can be model-specific and may change, buyers who specifically need an EPA WaterSense-certified toilet should verify the exact current model listing before purchase.

That is especially important if a utility rebate or local code depends on formal certification.

Strong Flush and Water Efficiency Are Not Opposites

Older toilets often used significantly more water simply to achieve adequate flushing.

Modern bowl geometry and flush engineering can improve waste movement while using less water.

The SOTOMO's combination of dual flushing and a high stated MaP score is designed around that principle.

Smooth Ceramic Surface

The toilet body is made from fired ceramic with a smooth glazed finish.

A non-porous glazed surface is easier to wipe clean and less likely to absorb stains than unfinished material.

Regular cleaning should still be expected, but a smoother glaze can reduce how easily residue adheres.

High-Temperature Firing

The source emphasizes high-temperature ceramic firing.

This is a common part of manufacturing vitreous ceramic bathroom fixtures and helps create a hard, durable finished surface.

The practical benefit is a bowl and exterior designed to withstand routine bathroom use and repeated cleaning.

Quick-Release Toilet Seat

The included seat uses a quick-release mechanism.

That can make cleaning easier because the seat can be removed without permanently disassembling the entire mounting system.

Removing the seat provides better access around:

• Hinges
• Rear bowl area
• Mounting points

where grime often accumulates.

Soft-Close Seat

The toilet also includes a soft-close seat.

That means the lid and seat are designed to lower gradually rather than slam shut.

This can reduce noise and prevent repeated impact against the ceramic bowl.

Installation Access Through Side Openings

Skirted toilets can sometimes be more difficult to bolt to the floor because the smooth side panels hide the mounting points.

SOTOMO addresses this with side-mounted installation access holes.

These openings are intended to give installers easier access to the floor bolts while preserving the streamlined exterior once the covers are installed.

Side Covers Finish the Appearance

The package includes side cover sets.

After installation, these covers conceal the access openings and maintain the smooth skirted look.

Wax Ring Included

A wax ring is included with the toilet.

The wax ring forms the seal between the toilet outlet and floor flange.

Having one in the package is convenient, though some plumbers may choose a different seal depending on:

• Flange height
• Floor condition
• Personal installation preference

Floor Bolts Included

The package also includes floor bolts.

These secure the toilet to the flange or floor mounting hardware.

Again, the actual installation should follow the instructions supplied with the exact model.

Pre-Installed Flush Valve

The flush valve is described as pre-installed.

This can reduce assembly work compared with toilets that require more internal tank components to be fitted after unpacking.

It may also reduce the chance of incorrect internal assembly during DIY installation.

What Comes in the Package?

According to the supplied description, the package includes:

• One-piece toilet
• Soft-close toilet seat
• Pre-installed flush valve
• Wax ring
• Floor bolts
• Tank lid
• Side covers
• Installation instructions

This is a relatively complete package for a toilet installation.

A water supply line is not specifically mentioned, so buyers should verify whether one needs to be purchased separately.

Is It Easy to Install?

The manufacturer describes the installation process as straightforward and provides instructions and video guidance.

For someone experienced with toilet replacement, the included hardware and side access may make installation manageable.

However, toilet installation still requires correct:

• Flange alignment
• Wax seal compression
• Leveling
• Supply connection

A mistake can lead to leaks that may not be immediately visible.

When Professional Installation Makes Sense

A plumber may be worthwhile if:

• The flange is damaged
• The floor is uneven
• The existing rough-in is unusual
• The drain has prior clogging problems

A toilet itself may be simple, but the plumbing below it may not be.

Verify the Rough-In Distance

The source does not state the rough-in measurement.

That is one of the most important specifications for toilet compatibility.

A common residential rough-in is 12 inches, but you should never assume this model uses that dimension without checking the current technical drawing.

Measure from the finished wall to the center of the flange bolts before buying.

One-Piece vs. Two-Piece Toilet

A two-piece toilet separates the tank and bowl.

One-Piece Advantages

A one-piece design usually offers:

• Fewer exterior seams
• Easier cleaning
• More integrated appearance

Two-Piece Advantages

Two-piece toilets are often:

• Easier to lift
• Easier to maneuver during installation

A one-piece toilet can be substantially heavier because the entire fixture moves as one unit.

Dual Flush vs. Single Flush

A single-flush toilet uses the same volume every time.

A dual-flush model gives the user a choice.

The dual system is most useful when household members consistently use the lower-volume option when appropriate.

If everyone always selects the full flush, much of the water-saving benefit is lost.

Rimless vs. Traditional Rim

A conventional toilet distributes water through passages around the underside of the rim.

A rimless toilet reduces those hidden channels.

Potential advantages include:

• Easier cleaning
• Better visibility
• Less hidden mineral buildup

Actual flushing effectiveness depends on the complete bowl and trapway design rather than rimless construction alone.

Who Is This Toilet Best For?

The SOTOMO toilet may be a good fit for buyers who want:

• One-piece construction
• Elongated seating
• Dual flushing
• Strong stated MaP performance
• Rimless bowl design
• Skirted trapway
• Easy cleaning
• Soft-close quick-release seat

It can work especially well in contemporary bathrooms where appearance and maintenance convenience are both priorities.

Who Might Prefer Another Toilet?

Another model may be preferable if you need:

• A round bowl for very tight spaces
• A specific ADA-certified height
• A particular rough-in size
• Pressure-assisted flushing

The best toilet is the one that matches both the plumbing layout and the household's comfort requirements.

Common Buying Mistakes

Forgetting to Check Rough-In

This can make an otherwise suitable toilet impossible to install correctly.

Choosing by Appearance Alone

Flushing performance and bowl dimensions matter just as much.

Assuming “Comfort Height” Fits Everyone

Measure actual seat height.

Ignoring Toilet Weight

A one-piece toilet may require two people to move safely.

Overtightening Floor Bolts

Ceramic can crack if mounting hardware is overtightened.

Cleaning Tips

A skirted, rimless toilet can simplify cleaning, but regular maintenance is still important.

Use cleaners compatible with glazed ceramic and avoid unnecessarily abrasive tools.

Pay attention to the area around:

• Seat hinges
• Flush buttons
• Base seal

where residue can still collect.

Hard-Water Considerations

Hard water can leave mineral deposits even on a smooth ceramic surface.

Rimless construction can make those deposits easier to see and reach.

Periodic cleaning is usually easier than allowing heavy scale to build up.

Pros and Considerations

Advantages

• One-piece construction
• Elongated bowl
• 16.8-inch stated seat height
• 1000-gram stated MaP score
• Rimless tornado flush
• 1.1/1.6 GPF dual flush
• Approximately 1.28 GPF average
• Skirted easy-clean exterior
• Soft-close seat
• Quick-release seat
• Side installation access
• Wax ring and mounting hardware included

Potential Considerations

• Rough-in dimension must be verified
• One-piece body may be heavy to install
• WaterSense status should be confirmed for the exact model if certification matters
• 16.8-inch seat height may not suit every user
• Dual-flush savings depend on how the toilet is actually used

Frequently Asked Questions

What are the toilet's dimensions?

Approximately 28.4 inches deep, 15.5 inches wide, and 26.6 inches high according to the supplied description.

Is the bowl elongated?

Yes.

How long is the seat?

Approximately 18.43 inches according to the source.

What is the seat height?

Approximately 16.8 inches.

What is the MaP score?

The manufacturer lists a 1000-gram MaP flush score.

How much water does it use?

The dual flush is listed at approximately 1.1 GPF and 1.6 GPF, with a stated average of 1.28 GPF.

Is it WaterSense compliant?

The source states that it meets WaterSense criteria. Buyers who specifically require formal certification should verify the exact current model.

Is the bowl rimless?

Yes. It uses a rimless tornado-style flush design.

Is the toilet easy to clean?

The combination of a skirted one-piece body and rimless bowl eliminates several common hard-to-reach cleaning areas.

Does it include the toilet seat?

Yes.

Is the seat soft closing?

Yes.

Can the seat be removed easily?

Yes. It uses a quick-release design.

Is a wax ring included?

Yes, according to the supplied product description.

Are floor bolts included?

Yes.

Is the flush valve pre-installed?

Yes.

What warranty is listed?

The source states a 12-month warranty along with ongoing customer support.

Final Thoughts

The SOTOMO elongated one-piece dual-flush toilet is designed for buyers who want a modern-looking toilet without sacrificing practical flushing and maintenance features.

Its most compelling specifications are the stated 1000-gram MaP score, rimless tornado flush, 1.1/1.6 GPF dual-flush system, skirted body, elongated seat, and quick-release soft-close seat. Together, those features address several everyday priorities: waste removal, water use, comfort, noise, and cleaning.

The most important specification missing from the supplied description is the rough-in distance, so that should be verified before purchase. Buyers who specifically require WaterSense or accessibility certification should also confirm the exact model's current certification rather than relying only on marketing language.

For homeowners looking for a modern elongated one-piece toilet with strong flushing performance, dual-flush water efficiency, a rimless bowl, skirted trapway, and easy-clean design, the SOTOMO provides a well-rounded set of features for a contemporary bathroom.