TOTO Drake WASHLET C5 Toilet Review: TORNADO FLUSH, Heated Bidet Seat, PREMIST, and EWATER+ Cleaning

The TOTO Drake WASHLET C5 combines a high-efficiency two-piece toilet with an integrated electronic bidet seat, creating a bathroom fixture that focuses on comfort, hygiene, and easier day-to-day maintenance. Instead of adding a separate aftermarket bidet to a conventional toilet, this system is designed as a coordinated WASHLET+ setup with a more integrated appearance and concealed connections.

The model pairs TOTO's Drake toilet platform with the C5 WASHLET bidet seat and includes features such as warm-water cleansing, a heated seat, warm-air drying, deodorizing, PREMIST bowl preparation, EWATER+ wand cleaning, TORNADO FLUSH, and CEFIONTECT ceramic glaze. It also uses 1.28 gallons per flush, making it a high-efficiency toilet while retaining a full-size elongated bowl.

For homeowners remodeling a primary bathroom, upgrading accessibility, or simply looking for a cleaner and more comfortable bathroom routine, the Drake WASHLET C5 offers a strong balance between premium bidet functionality and a familiar two-piece toilet design.

What Is the TOTO Drake WASHLET C5?

The TOTO Drake WASHLET C5 is a toilet-and-bidet combination that includes:

• A two-piece Drake toilet
• An elongated bowl
• TOTO C5 electronic bidet seat
• 1.28 gallons-per-flush operation
• TORNADO FLUSH
• CEFIONTECT glaze
• PREMIST bowl misting
• EWATER+ wand cleaning
• Heated seat
• Warm-water cleansing
• Warm-air dryer
• Air deodorizer
• Wireless remote
• Universal Height bowl

The supplied model information also references a 10-inch rough-in configuration, which is an important installation detail to verify before purchasing.

Why the Rough-In Measurement Matters

The rough-in is the distance from the finished wall behind the toilet to the center of the floor drain.

Many toilets are designed around a 12-inch rough-in, but some homes use 10-inch or other configurations.

This specific model is listed as a 10-inch rough-in version.

Before ordering, measure carefully.

An incorrect rough-in can result in:

• Poor wall clearance
• Installation incompatibility
• Unnecessary plumbing modifications

Do not assume that because another Drake model uses a 12-inch rough-in, this particular configuration does too.

Integrated WASHLET+ Design

TOTO's WASHLET+ concept is intended to provide a cleaner-looking integration between the toilet and bidet seat.

Traditional add-on bidet seats often leave:

• Visible water hoses
• Exposed power connections
• Extra plumbing around the side

The WASHLET+ design helps conceal some of those connections for a more finished appearance.

This can make a noticeable difference in a bathroom where visual cleanliness matters.

Warm-Water Front and Rear Cleansing

The C5 WASHLET provides both front and rear washing functions.

Water temperature and spray pressure can be adjusted to suit individual preferences.

This gives users more control than a fixed mechanical bidet attachment.

Depending on the selected mode, users can customize:

• Water temperature
• Spray pressure
• Nozzle position
• Wash pattern

The result is a more personalized cleaning experience.

Oscillating and Pulsating Wash Modes

The bidet also offers oscillating and pulsating spray options.

An oscillating wash moves the spray position over a wider area.

A pulsating wash varies water pressure rhythmically.

These functions are designed to make cleansing feel more comfortable while improving coverage.

Different users may prefer different modes, so the ability to change them is useful in a shared bathroom.

Heated Seat

The SoftClose WASHLET seat includes adjustable heating.

This is one of the simplest premium features but also one of the most noticeable in daily use.

A heated seat can be especially appreciated:

• During colder months
• In air-conditioned homes
• During nighttime use

Temperature control allows users to adjust warmth rather than relying on one fixed setting.

SoftClose Seat

The seat is designed to close gradually rather than slamming.

This helps reduce:

• Noise
• Sudden impact
• Wear on the seat and bowl

It is a small detail, but one that improves everyday usability.

Warm-Air Dryer

After washing, the C5 includes a warm-air drying function.

The supplied description lists three temperature settings.

The dryer can reduce reliance on toilet paper, although drying time is generally slower than simply wiping.

Many users choose to combine the bidet with a small amount of toilet paper for faster drying.

Automatic Air Deodorizer

The system includes an air deodorizer that helps reduce bathroom odors during and after use.

Rather than simply adding fragrance, the deodorizing system draws air through a filter.

This can be particularly useful in:

• Small bathrooms
• Powder rooms
• Enclosed toilet rooms

Like any filtration feature, it may require periodic maintenance according to the manufacturer's instructions.

PREMIST Bowl Technology

PREMIST wets the inside of the bowl before use.

The idea is simple: waste is less likely to stick to a wet ceramic surface than to a dry one.

This helps the toilet stay cleaner between manual cleanings.

PREMIST works especially well in combination with the CEFIONTECT glaze.

What Is CEFIONTECT?

CEFIONTECT is TOTO's ultra-smooth ceramic glaze.

Its purpose is to create a surface that is more difficult for waste and residue to adhere to.

This can help:

• Improve bowl cleanliness
• Reduce buildup
• Make flushing more effective
• Simplify routine cleaning

CEFIONTECT does not eliminate the need for cleaning, but it can reduce how much residue remains after normal use.

TORNADO FLUSH System

The Drake uses TOTO's TORNADO FLUSH system.

Instead of relying on many small rim holes, the system directs water in a powerful circular pattern around the bowl.

This creates a sweeping action that helps wash a larger portion of the bowl surface.

Benefits may include:

• Better bowl coverage
• More efficient waste removal
• Reduced residue
• Less frequent manual scrubbing

The toilet still uses only 1.28 gallons per flush.

1.28 Gallons Per Flush

This model operates at 1.28 GPF.

That meets common high-efficiency toilet standards while still providing strong flush performance through the TORNADO FLUSH design.

Lower water use can help reduce consumption compared with older toilets that use substantially more water per flush.

Actual household savings depend on:

• Number of occupants
• Frequency of use
• Existing toilet efficiency

EWATER+ Wand Cleaning

The bidet wand is automatically cleaned with TOTO's EWATER+ system.

The process is designed to clean the wand before and after use.

This helps reduce manual maintenance and supports better nozzle hygiene.

The exact chemistry and operation are part of TOTO's proprietary system, so users should follow the manufacturer's care instructions rather than using harsh cleaners on the wand.

Self-Cleaning Bidet Wand

The nozzle itself is one of the most important hygiene components in any electronic bidet.

Automatic cleaning helps maintain it between uses.

It is still good practice to periodically inspect and clean the wand according to the manual, especially in areas with hard water.

Wireless Remote Control

The C5 uses a slim wireless remote with an illuminated touchpad.

This keeps controls off the side of the seat and makes the interface easier to see and operate.

Common functions can be adjusted without reaching around the toilet.

The remote may control settings such as:

• Water temperature
• Pressure
• Spray position
• Dryer
• Seat temperature

Why a Remote Is Useful

Side-mounted controls can be difficult to read while seated.

A wireless remote is more accessible and can be mounted in a convenient location on the wall.

This is particularly useful for:

• Older users
• People with limited mobility
• Shared bathrooms

Universal Height Design

TOTO's Universal Height is taller than many traditional toilets.

This can make sitting down and standing up easier for many users.

The supplied information notes that Universal Height models are capable of meeting ADA height requirements when installed in compliant configurations.

This can make the toilet appealing for:

• Older adults
• Taller users
• People with mobility limitations

However, complete ADA compliance depends on more than bowl height alone.

Elongated Bowl

The toilet uses an elongated bowl.

Elongated toilets are generally considered more comfortable than round-front models because they provide more seating area.

The tradeoff is slightly greater projection into the room.

Before installation, confirm that the bathroom has enough clearance.

Two-Piece Construction

The Drake uses a traditional two-piece design, meaning the tank and bowl are separate components.

Advantages include:

• Familiar installation
• Easier component handling
• Common replacement format

A one-piece toilet may look more seamless, but a two-piece model is often easier to transport and service.

Electronic Bidet vs. Standard Toilet

The biggest difference is functionality.

A standard toilet provides:

• Flushing
• Basic seating

The C5 adds:

• Warm-water washing
• Heated seat
• Drying
• Deodorizing
• Bowl pre-rinse
• Nozzle self-cleaning

That creates a much more comfort-oriented experience.

WASHLET C5 vs. Basic Bidet Attachment

A basic bidet attachment is less expensive and simpler.

However, it usually lacks:

• Heated water
• Heated seat
• Warm-air dryer
• Deodorizer
• Wireless remote
• PREMIST
• EWATER+ cleaning

The C5 is intended for users who want a more complete bidet experience.

Electrical Requirements

The WASHLET requires electricity.

Before installation, verify that there is a suitable electrical outlet near the toilet.

Bathroom electrical installations should comply with local code, and a GFCI-protected outlet is commonly required in wet areas.

If no outlet exists, an electrician may be needed.

Water Supply Requirements

The bidet seat also needs access to the toilet's water supply.

Because this is a WASHLET+ configuration, the supply arrangement is designed to be cleaner than a generic retrofit.

Still, installation should follow TOTO's instructions carefully.

Professional Installation Considerations

A homeowner with plumbing experience may be able to install the toilet, but professional help can be worthwhile if:

• The rough-in is uncertain
• Electrical work is needed
• The existing flange is damaged
• Plumbing connections need modification

Correct installation is particularly important because the fixture combines plumbing and electronics.

Cleaning and Maintenance

A premium bidet toilet should be cleaned with products compatible with its ceramic, plastic, and electronic components.

Avoid harsh abrasive cleaners on:

• Seat
• Wand
• Remote
• Electronic housing

For the bowl, follow TOTO's recommendations to preserve the CEFIONTECT surface.

Hard Water Considerations

Mineral-rich water can affect bidet nozzles and internal waterways over time.

Signs of buildup may include:

• Reduced spray flow
• Uneven spray pattern
• Deposits around the nozzle

Homes with hard water may require more frequent inspection and maintenance.

What Happens During a Power Outage?

Most electronic bidet functions depend on electricity.

During a power outage, features such as:

• Heated seat
• Warm water
• Dryer
• Deodorizer
• Remote controls

may be unavailable.

Basic flushing behavior should be confirmed from the model's current manual, especially if outages are common in your area.

Common Buying Mistakes

Ordering the Wrong Rough-In

This model is listed as a 10-inch rough-in version.

Forgetting the Electrical Outlet

The bidet seat requires power.

Assuming Every TOTO Drake Is the Same

Drake configurations vary by rough-in, bowl height, seat, and included features.

Ignoring Bathroom Clearance

Elongated bowls project farther than round-front models.

Using Harsh Cleaners

Incorrect products can damage bidet components and specialty glaze.

Who Is the TOTO Drake WASHLET C5 Best For?

This combination is well suited to:

• Primary bathrooms
• Bathroom remodels
• Bidet users
• Older adults
• Households prioritizing hygiene
• Users who want heated seating and warm-water cleansing

It is less suitable for buyers who want the simplest possible toilet with no electrical components.

Advantages and Considerations

Advantages

• TOTO Drake toilet platform
• C5 electronic WASHLET seat
• Warm-water front and rear cleansing
• Adjustable water pressure
• Adjustable temperature
• Oscillating and pulsating wash
• Heated seat
• Warm-air dryer
• Automatic deodorizer
• PREMIST
• EWATER+ wand cleaning
• TORNADO FLUSH
• CEFIONTECT glaze
• Wireless remote
• Universal Height
• 1.28 GPF efficiency

Potential Considerations

Requires electrical power.

10-inch rough-in must match the bathroom.

More components mean more maintenance than a standard toilet.

Bidet electronics can be more expensive to repair than a basic seat.

Hard water may increase nozzle maintenance.

Frequently Asked Questions

Does the TOTO Drake C5 include a bidet?

Yes. The C5 WASHLET provides front and rear warm-water washing.

Does it have a heated seat?

Yes.

Can the water temperature be adjusted?

Yes.

Can the spray pressure be adjusted?

Yes.

Does it include a dryer?

Yes. It has adjustable warm-air drying.

Does it deodorize the air?

Yes. An automatic air deodorizer is included.

What is PREMIST?

PREMIST wets the toilet bowl before use to help reduce waste adhesion.

What is EWATER+?

EWATER+ is TOTO's automatic wand-cleaning feature.

What is CEFIONTECT?

CEFIONTECT is TOTO's smooth ceramic glaze designed to reduce waste sticking to the bowl surface.

How much water does it use per flush?

1.28 gallons.

Is it an elongated toilet?

Yes.

Is it Universal Height?

Yes.

What rough-in does this model use?

The supplied model is listed as a 10-inch rough-in configuration.

Does it require electricity?

Yes, for WASHLET functions.

Is a wireless remote included?

Yes.

Final Thoughts

The TOTO Drake WASHLET C5 toilet combination is a strong option for homeowners who want to add premium bidet functionality without moving to a fully integrated luxury smart toilet.

Its biggest advantage is the combination of proven toilet technology and electronic comfort features. TORNADO FLUSH and CEFIONTECT focus on bowl cleanliness and flushing efficiency, while PREMIST, EWATER+, warm-water cleansing, a heated seat, deodorizing, and warm-air drying improve the user experience.

The Universal Height bowl and wireless remote also make the fixture easier to use for a broad range of people.

The most important buying consideration is installation compatibility. This particular model is listed with a 10-inch rough-in, and the WASHLET requires nearby electrical power.

For homeowners looking for a TOTO bidet toilet with a heated seat, warm-water cleansing, automatic wand cleaning, TORNADO FLUSH, and a refined WASHLET+ installation, the Drake C5 offers a well-balanced combination of hygiene, comfort, and practical everyday performance.