TOTO Legato One-Piece Toilet Review: TORNADO FLUSH, CEFIONTECT, WASHLET+ Compatibility, and Auto-Flush Readiness

A premium toilet should justify its price with more than appearance alone. Flushing performance, cleaning convenience, seating comfort, long-term maintenance, and upgrade compatibility all matter—especially when the fixture is designed to serve as the foundation for a bidet system later.

The TOTO Legato CST624CEFGAT40#01 is a one-piece elongated toilet built around that broader idea. It combines a skirted exterior, 1.28-gallon TORNADO FLUSH system, TOTO’s CEFIONTECT ceramic glaze, chair-height seating geometry, and dedicated compatibility with TOTO’s T40 WASHLET+ bidet seats. It is also designed to support auto-flush functionality when paired with the appropriate compatible components.

This particular product listing is important to understand correctly: it is the toilet base without a seat. Buyers who want a complete bidet setup need to add a compatible T40 WASHLET+ seat separately.

What Is the TOTO Legato?

The TOTO Legato is a floor-mounted, one-piece elongated toilet with a concealed skirted trapway.

According to the supplied listing, its exterior dimensions are approximately 28.44 inches deep, 17.31 inches wide, and 27.94 inches high.

The toilet uses approximately 1.28 gallons per flush and incorporates TOTO’s TORNADO FLUSH bowl-rinsing system.

The bowl is coated with CEFIONTECT, TOTO’s ultra-smooth ceramic glaze designed to reduce the ability of waste and residue to adhere to the surface.

This model is also part of the WASHLET+ T40 system, meaning the toilet is designed to integrate more cleanly with a compatible TOTO electronic bidet seat.

One-Piece Construction

The Legato combines the tank and bowl into a single ceramic fixture.

That differs from conventional two-piece toilets, where the tank sits separately on top of the bowl.

A one-piece design offers both aesthetic and maintenance benefits.

Why One-Piece Toilets Are Easier to Maintain

The seam between a separate tank and bowl can collect:

• Dust
• Moisture
• Cleaning residue

The Legato removes that joint, creating a smoother exterior that is easier to wipe down.

For households prioritizing bathroom cleanliness, that is one of the practical reasons to choose a one-piece model.

Skirted Exterior Design

The toilet also uses a skirted base.

Rather than exposing the curved shape of the internal trapway on both sides, the ceramic body presents a cleaner, more continuous surface.

This helps create a more contemporary appearance while reducing exterior contours that can collect dust.

Easier Cleaning Around the Base

Traditional toilet bases often have several difficult-to-reach bends around the trapway.

The Legato’s skirted body reduces those recesses.

That means everyday cleaning is more focused on broad ceramic surfaces rather than intricate plumbing-shaped contours.

Elongated Bowl

The Legato uses an elongated bowl.

Elongated toilets provide more front-to-back seating room than round-front designs and are often preferred in primary bathrooms.

The tradeoff is slightly greater floor projection compared with a compact round bowl.

Check Bathroom Clearance

With a depth of approximately 28.44 inches, this is not a compact toilet.

Before purchase, check clearance around:

• Vanity
• Shower door
• Opposing wall
• Bathroom entry

This is especially important in older or narrow bathrooms.

Chair-Height Seating

The listing describes the Legato as a chair-height toilet.

A taller seating position can make sitting down and standing up easier for many adults.

This may be particularly useful for:

• Taller users
• Older adults
• People who find lower toilets uncomfortable

Chair Height Is Not Ideal for Everyone

Shorter users and children may find that their feet do not rest as naturally on the floor.

Seat height should therefore be considered based on the household rather than assumed to be universally more comfortable.

1.28 Gallons Per Flush

The Legato uses approximately 1.28 gallons of water per flush.

This is a high-efficiency flush volume compared with older toilets that use more water.

The important point is that TOTO combines the lower water volume with bowl geometry and flushing technology designed to maintain effective rinsing.

TORNADO FLUSH Technology

The TORNADO FLUSH system is one of the main features of the Legato.

Instead of relying on a conventional rim with many small holes, the bowl uses powerful water outlets to create a centrifugal rinsing action.

The goal is to move water around the bowl more forcefully and uniformly.

Why Centrifugal Bowl Rinsing Matters

A strong swirling action can help cover more of the bowl surface during the flush.

That can improve:

• Bowl rinsing
• Waste movement
• Overall cleaning coverage

while still using a relatively modest 1.28 gallons per flush.

Rim Design and Cleaning

Modern TOTO bowls typically minimize the traditional hidden rim geometry found on older toilets.

Fewer concealed channels can make the upper bowl easier to inspect and clean.

The exact bowl architecture should be confirmed from the current model documentation, but the TORNADO FLUSH design is intended to reduce reliance on numerous small rim holes.

CEFIONTECT Glaze

Another major feature is CEFIONTECT.

This is TOTO’s very smooth ceramic glaze applied to the bowl surface.

Its purpose is to make it harder for residue and waste to adhere to microscopic surface irregularities.

Why Surface Smoothness Matters

Even glazed ceramic has microscopic texture.

A smoother finish can reduce how strongly:

• Waste
• Mineral residue
• Organic buildup

sticks to the bowl.

That does not make the toilet maintenance-free, but it can help routine flushing and cleaning work more effectively.

CEFIONTECT Does Not Eliminate Cleaning

The glaze should be seen as a maintenance aid rather than a substitute for cleaning.

You will still need to clean:

• Bowl
• Seat
• Exterior
• Base area

on a regular basis.

Its value is mainly in reducing how easily residue adheres.

Use Compatible Cleaning Products

Very abrasive cleaning tools can damage ceramic finishes over time.

For a premium glazed toilet, use cleaning methods appropriate for the manufacturer’s surface recommendations.

Avoid unnecessarily aggressive scouring unless specifically approved.

WASHLET+ Compatibility

One of the most important reasons to choose this Legato configuration is its compatibility with TOTO WASHLET+ T40 bidet seats.

WASHLET+ is TOTO’s integrated toilet-and-bidet platform.

The system is designed to create a cleaner installation than attaching a conventional bidet seat to a standard toilet.

What WASHLET+ Actually Means

A compatible T40 WASHLET+ toilet is designed so the bidet seat’s water and electrical connections can be routed more discreetly.

That helps reduce visible:

• Hoses
• Cables

around the side of the toilet.

The result is a more integrated appearance.

The WASHLET Seat Is Not Included

This is a critical buying detail.

The supplied listing identifies this configuration as “Less Seat.”

That means the toilet itself does not include a standard toilet seat or electronic WASHLET.

If you want a complete toilet, you need to purchase a compatible seat separately.

T40 Compatibility Matters

Not every TOTO WASHLET will necessarily provide the intended hidden-connection integration.

The source specifically states compatibility with a T40 WASHLET+ configuration.

Before buying a bidet seat, verify the exact compatibility matrix.

Why Buy the Toilet Before the WASHLET?

For some homeowners, purchasing a WASHLET+-ready toilet provides flexibility.

You can:

• Install the toilet first
• Add a compatible electronic bidet later

This can help spread renovation costs over time.

Auto-Flush Ready

The Legato is also described as auto-flush compatible.

When combined with the appropriate compatible WASHLET and auto-flush components, the toilet can support automatic flushing.

This can create a more hands-free experience.

Auto-Flush Compatibility Is Not the Same as Included Auto Flush

The toilet being “auto-flush ready” does not mean it automatically flushes out of the box.

The required compatible WASHLET and related components must be present.

This distinction is important when comparing prices.

Benefits of Auto Flush

Automatic flushing can provide:

• Hands-free operation
• Reduced contact with the flush control
• Greater convenience

It can also be useful for users who frequently forget to flush.

Conventional Flush Operation

Without the compatible auto-flush setup, the toilet still functions as a conventional toilet.

The exact manual flush hardware included with this specific model should be confirmed from the current installation documentation.

Premium Bathroom Positioning

The Legato is clearly positioned above entry-level toilets.

Its premium value comes mainly from combining:

• One-piece construction
• Skirted design
• TORNADO FLUSH
• CEFIONTECT
• WASHLET+ integration
• Auto-flush readiness

Rather than simply selling a basic ceramic fixture.

Toilet-Only vs. Complete Smart Toilet

The Legato should not be confused with an all-in-one smart toilet.

By itself, it is still a conventional ceramic toilet.

The smart functions are added through a compatible WASHLET.

That modular approach has both advantages and disadvantages.

Advantage of a Modular WASHLET System

If the electronic bidet seat needs replacement years later, it can potentially be serviced or replaced independently of the ceramic toilet.

That may be preferable to an integrated smart toilet where all electronics are built permanently into one fixture.

Potential Downside

The toilet and WASHLET together can become expensive.

Buyers should compare the total cost of:

• Legato toilet
• Compatible T40 WASHLET
• Installation
• Electrical work

rather than considering the toilet price alone.

Electrical Outlet Requirements for WASHLET Use

The toilet itself does not require electricity.

However, a compatible electronic WASHLET typically does.

If you plan to add one, check the bathroom for a properly located electrical outlet near the toilet.

The exact electrical requirements depend on the chosen WASHLET model.

Plan Electrical Work During Renovation

If walls or flooring are already open during a remodel, that is the best time to plan a code-compliant receptacle.

Adding power afterward can be more disruptive.

Rough-In Compatibility

The supplied listing does not state the rough-in distance.

That dimension must be verified before purchase.

The rough-in is measured from the finished wall behind the toilet to the center of the floor drain or closet bolts.

Never Assume the Rough-In

A common residential rough-in is 12 inches, but other layouts exist.

Check the exact TOTO specification sheet for CST624CEFGAT40#01 before ordering.

Water-Supply Position

Because this is a skirted toilet, the water shutoff valve should also be checked for clearance.

Some older bathrooms have supply valves located in positions that can interfere with smooth-sided toilet bases.

Use the manufacturer’s installation drawing before relocating or finishing plumbing.

Floor-Mounted Installation

The Legato is a floor-mounted toilet.

The flange and floor must be in good condition before installation.

Common installation issues include:

• Damaged closet flange
• Uneven floor
• Incorrect rough-in
• Poor seal alignment

Professional installation can reduce the chance of hidden leaks.

One-Piece Toilets Are Heavy

One-piece ceramic toilets are usually more difficult to maneuver than two-piece models because the tank cannot be removed separately.

Even if the exact weight is not supplied here, buyers should assume the fixture is awkward enough that two-person handling may be safer.

Protect the Ceramic During Installation

Do not drag the toilet across finished flooring.

Careful lifting and positioning reduces the risk of:

• Cracking
• Chipping
• Damaging floor finishes

One-Piece vs. Two-Piece Toilet

One-Piece Advantages

• Cleaner appearance
• Easier exterior cleaning
• Fewer seams

Two-Piece Advantages

• Easier carrying
• Often less expensive
• Tank can be replaced separately

The Legato prioritizes aesthetics and maintenance convenience.

TOTO Legato vs. Standard Basic Toilet

A conventional toilet may cost considerably less.

The Legato justifies its premium mainly through:

• Advanced flush engineering
• Premium bowl glaze
• Skirted styling
• Bidet-upgrade integration

If those features are not important to you, a less expensive model may provide better value.

TOTO Legato vs. Integrated Smart Toilet

An integrated smart toilet combines the bidet, flushing, and ceramic fixture into one product.

The Legato takes a modular approach.

Legato + WASHLET Advantages

• Easier electronic replacement
• Broad TOTO bidet ecosystem
• More conventional toilet base

Integrated Smart Toilet Advantages

• More unified design
• Fewer separate purchasing decisions

The better approach depends on whether modular serviceability or complete integration matters more.

Who Is the TOTO Legato Best For?

The Legato is particularly well suited to buyers who want:

• Premium one-piece toilet
• Elongated bowl
• Chair-height seating
• 1.28 GPF efficiency
• Powerful bowl rinsing
• Easy-clean glaze
• Skirted exterior
• Future WASHLET upgrade

It makes the most sense in a primary bathroom or higher-end renovation where long-term design integration matters.

Who Might Prefer Another Toilet?

A different model may be better if you want:

• Lower upfront cost
• Included toilet seat
• Round bowl
• Compact footprint
• Complete smart functions included from the start

The Legato is best viewed as a premium foundation rather than an inexpensive all-inclusive package.

Common Buying Mistakes

Assuming a Seat Is Included

This listing is explicitly less seat.

Buying the Wrong WASHLET

Use a compatible T40 WASHLET+ model if you want the intended integrated installation.

Assuming Auto Flush Is Built In

It is compatible with auto flush but does not provide the function by itself.

Forgetting Electrical Planning

A future WASHLET will need power.

Ignoring Rough-In Dimensions

Verify plumbing compatibility before ordering.

Pros and Considerations

Advantages

• One-piece construction
• Elongated bowl
• Chair-height design
• Skirted exterior
• 1.28 GPF flushing
• TORNADO FLUSH system
• CEFIONTECT glaze
• T40 WASHLET+ compatibility
• Auto-flush compatibility
• Premium contemporary styling

Potential Considerations

• Seat not included
• WASHLET sold separately
• Auto-flush hardware not included
• Higher overall cost than a basic toilet
• Rough-in must be verified
• WASHLET installation requires nearby electrical power

Frequently Asked Questions

What are the dimensions?

Approximately 28.44 inches deep, 17.31 inches wide, and 27.94 inches high according to the supplied listing.

Is the Legato a one-piece toilet?

Yes.

Is the bowl elongated?

Yes.

Is it chair height?

Yes, according to the supplied product description.

How much water does it use?

Approximately 1.28 gallons per flush.

What is TORNADO FLUSH?

It is TOTO’s centrifugal bowl-rinsing system designed to move water powerfully around the bowl.

What is CEFIONTECT?

CEFIONTECT is TOTO’s ultra-smooth ceramic glaze designed to reduce waste adhesion and make bowl maintenance easier.

Is a toilet seat included?

No. This specific listing is identified as less seat.

Can I install a normal toilet seat?

The toilet is intended for compatible seating, but buyers planning a WASHLET+ installation should choose the appropriate T40 WASHLET+ model.

Is a WASHLET included?

No.

Is it WASHLET+ compatible?

Yes. It is designed for T40 WASHLET+ integration.

Does it automatically flush?

Not by itself. It is auto-flush compatible when paired with the appropriate compatible system.

Does the toilet require electricity?

The toilet itself does not require power for normal flushing. A compatible electronic WASHLET does.

What rough-in does it require?

The supplied listing does not specify. Check the official installation specification for the exact model before purchase.

Is it easy to clean?

The one-piece construction, skirted exterior, TORNADO FLUSH system, and CEFIONTECT glaze are all designed to simplify maintenance.

Final Thoughts

The TOTO Legato CST624CEFGAT40#01 is best understood as a premium toilet platform designed for homeowners who want strong conventional performance today and the option of a more integrated electronic bidet system later.

Its most compelling features are the 1.28 GPF TORNADO FLUSH system, CEFIONTECT glaze, one-piece skirted body, elongated chair-height bowl, T40 WASHLET+ compatibility, and auto-flush readiness. Those features make it especially attractive for upscale bathroom renovations where cleaning convenience and future bidet integration matter.

The main purchasing caution is package completeness. This listing does not include a seat, WASHLET, or complete automatic-flush system. Those components must be chosen separately.

For buyers looking for a premium TOTO one-piece elongated toilet with TORNADO FLUSH, CEFIONTECT, WASHLET+ compatibility, chair-height seating, and future auto-flush support, the Legato offers a sophisticated foundation for a modern bathroom.