Toto C100 vs Toto C2: Unveiling the Top Features & Differences

Choosing the right bidet toilet seat can be tricky, especially when Toto’s models, like the C100 and C2, offer such advanced features.

It’s frustrating to decipher which model will best suit your needs and provide the most comfort and hygiene.

We understand the dilemma of comparing similar products, and that’s why we’re here to help.

In this article, we’ll dive into the Toto C100 vs C2, unveiling their top features and key differences to guide you towards your ideal choice.

Toto C100 Vs Toto C2 Key Features Compared

eWater+ Feature

The eWater+ feature is available in the TOTO C2 Washlet but not in the TOTO C100 Washlet. eWater+ is an electrolyzed water system that helps maintain the cleanliness of the bidet wand and toilet bowl.

It uses electrolyzed water generated by a technologically advanced process, transforming the water into a safe and powerful compound.

This cleaning technology helps to keep the wand and bowl clean and hygienic, reducing the need for harsh cleaning chemicals.

The TOTO C2 Washlet utilizes eWater+ to automatically clean the wand both inside and out, before and after each use.

This feature ensures that the wand remains in a hygienic condition and is always ready for use.

Slimmer Profile

The TOTO C2 Washlet has a slimmer profile compared to the TOTO C100 Washlet.

The C2 and C5 models are only 5.75″” tall in the rear, while the C100 model is significantly bulkier, almost 7.5″” tall in the rear.

The slimmer profile of the TOTO C2 Washlet creates a sleeker and more modern silhouette, which can be more visually appealing and easier to clean.

Tank Heating

The TOTO C100 Washlet uses a tank-type heating system, which means it has a pre-heated reservoir of warm water stored internally.

This pre-heated supply lasts around 35-40 seconds during each wash before the spray starts turning cooler.

However, the spray never gets completely cold.

The TOTO C2 Washlet, on the other hand, does not mention a tank heating system in the available information.

It is important to note that the TOTO C2 Washlet has adjustable water temperature settings, allowing users to customize their experience.

Attached Controls

Both the Toto C100 and C2 feature attached controls, conveniently located on a side panel for easy access.

This design allows users to adjust the settings without having to reach awkwardly or move from their comfortable position.

Imagine you’re sitting on a cozy couch, and you have a remote control to adjust the temperature, volume, and channel of your TV. The attached controls on these bidet seats work similarly, providing a seamless and user-friendly experience.

Air Deodorizer

The air deodorizer is another shared feature between the Toto C100 and C2.

This feature is like having a built-in air freshener that automatically neutralizes odors, ensuring a fresh and clean atmosphere in your bathroom.

It’s akin to having a personal assistant who, after you’ve cooked a fragrant meal, opens the windows and sprays air freshener to keep your home smelling pleasant.

The automatic air deodorizer in these bidet seats works tirelessly to maintain a fresh environment in your bathroom, enhancing your overall experience.


The Premist feature is present in both the Toto C100 and C2.

This feature sprays a fine mist of water on the toilet bowl before each use, creating a non-stick surface that helps prevent waste from adhering to the bowl.

It’s like using a non-stick pan for cooking.

Just as food slides off the pan easily, reducing the need for scrubbing and making cleaning a breeze, the Premist feature ensures that waste slides off the toilet bowl, keeping it cleaner for longer.

This feature not only enhances cleanliness but also reduces the time and effort required for manual cleaning.

While both models share these features, the Toto C2 is an upgraded version of the Toto C100.

The C2 has a slimmer profile, giving it a more streamlined look.

It also includes the unique eWater+ feature, which uses electrolyzed water to clean the wand and toilet bowl, reducing the need for harsh cleaning chemicals.

This feature is like having a self-cleaning oven that uses high temperatures to burn off residues, leaving you with less manual cleaning to do.

The eWater+ feature in the Toto C2 provides a similar benefit, ensuring a hygienic and eco-friendly cleansing experience.

Pulsating Spray Mode

The pulsating spray mode is a feature that both the Toto C100 and C2 share.

This mode allows the water to come out in short bursts rather than one continuous stream, providing a massaging effect that can be quite soothing after a long session on the toilet.

This feature is becoming increasingly standard in modern bidets, and it’s no surprise that both the C100 and C2 include it.

The pulsating spray mode in the C2 is an upgrade from the C100, offering both an oscillating and pulsating feature.

This dual action spray provides a gentle yet thorough cleanse, making the experience more comfortable and efficient.

The C100, on the other hand, only offers an oscillating feature.

The pulsating spray mode in both models is adjustable, allowing users to set the precise temperature and spray type for comfortable intimate cleansing.

This means you can customize your experience to your liking, whether you prefer a warm or cool water, high or low pressure.

Elongated Size (C2)

The Toto C2 is designed with an elongated size, which provides a more comfortable seating experience compared to the traditional round size.

This design is more accommodating for users, providing more room and comfort, especially for males.

However, the elongated size of the C2 may not be suitable for all bathrooms.

If your bathroom has a smaller space or if your existing toilet is round, the C2 may not fit properly.

In such cases, you might need to consider replacing your round toilet with an elongated one for a better fit.

Round and Elongated Sizes (C100)

Unlike the C2, the Toto C100 offers both round and elongated sizes, making it a more versatile option for different bathroom setups.

This means that whether you have a round or elongated toilet, the C100 can accommodate your needs.

The availability of both sizes in the C100 provides flexibility for users, allowing them to choose the size that best fits their toilet and comfort preferences.

However, it’s important to note that while the round size may fit better in smaller bathrooms, the elongated size generally offers a more comfortable seating experience.

One-touch removal

The Toto C100 and Toto C2 both feature a one-touch removal system, which is designed to make cleaning easier and more efficient.

This feature allows for the main unit of the bidet seat to be easily detached from the toilet body, providing access to hard-to-reach areas that may otherwise be difficult to clean.

In the case of the Toto C100, the one-touch removal feature is specifically highlighted in the instruction manual.

It mentions that the main unit can be easily removed for cleaning hard-to-reach areas.

This feature is particularly useful for maintaining cleanliness and hygiene, as it allows for thorough cleaning of the toilet seat and the surrounding areas.

Similarly, the Toto C2 also offers a one-touch removal feature.

According to the product’s press kit, the one-touch removal and reattachment of the seat from the toilet’s body make it easy to clean dirt or dust that may accumulate in this hard-to-reach space.

The lid of the C2 is also easily removed, further facilitating the cleaning process.

Washlet+ versions

The search results do not provide specific information about the Washlet+ versions of the Toto C100 and Toto C2.

However, it’s important to note that the Washlet+ system typically refers to a combination of a Toto toilet and a Toto Washlet that are designed to seamlessly fit together.

This system often includes additional features and technologies for enhanced comfort and cleanliness.

It would be advisable to refer to specific product listings or contact Toto directly for detailed information about the Washlet+ versions of the C100 and C2.

PROs and CONs

Toto C100


  1. Easy to install and use
  2. Heated seat for comfort
  3. Warm water cleansing
  4. Deodorizer for odor control
  5. Warm air dryer
  6. PREMIST feature for bowl cleanliness
  7. Adjustable water pressure and temperature
  8. Antimicrobial single plastic nozzle
  9. Self-cleaning nozzle
  10. 1-year manufacturer’s warranty


  1. Limited warm water supply (35-40 seconds)
  2. Fan noise when sitting on the seat
  3. Side panel controls (no remote)
  4. Bulkier design compared to newer models
  5. Short 1-year warranty

Toto C2


  1. Heated water for comfort
  2. High-tech electronic bidet seat
  3. Adjustable water temperature and volume
  4. Warm air drying feature
  5. Automatic air deodorizer
  6. Convenient arm control panel
  7. Heated seat with temperature control
  8. EWATER+ auto-cleans the wand
  9. Water PREMIST of bowl before each use
  10. Streamlined design


  1. Not suitable for non-elongated toilets
  2. Seat may have side-to-side movement
  3. Bumpers on the underside of the seat are different heights
  4. Does not have unlimited hot water
  5. Lid is not designed to bear weight

Key Specifications Comparison

Key SpecificationsTOTO C100TOTO C2
High-tech electronic bidet seatYesYes
Gentle Aerated, Warm Water, Dual Action SprayYes, with oscillating featureYes, with oscillating and pulsating feature
Adjustable water temperature and volumeYesYes
Warm air dryingYes, with five variable temperature settingsYes, with three variable temperature settings
Automatic air deodorizerYesYes
Convenient arm control panelYesYes
Docking Station for easy cleaning and installationYesYes
Heated Seat with Temperature ControlYesYes
PREMIST of bowl before each useYesYes
EWATER+ auto-cleans the wandNoYes
PriceNot available in search results$426.00

Final Say So!

The Toto C100 and C2 are both high-tech electronic bidet seats, but they cater to different user needs and preferences.

The C100, an entry-level model, is a solid choice for those seeking basic features like a gentle aerated warm water spray, adjustable water temperature and volume, warm air drying, automatic air deodorizer, and a convenient arm control panel.

It’s also available in both round and elongated sizes, making it a versatile option for various bathroom setups.

However, the C100’s design might not be for everyone.

Its significant slope at the back forces users to sit further forward on the seat, which can be uncomfortable, especially for males.

If comfort and a sleek design are high on your priority list, the C2 might be a better fit.

It’s an upgraded version of the C100, boasting a slimmer profile for a more streamlined look.

The C2 also introduces the unique eWater+ feature, which auto-cleans the wand and toilet bowl with electrolyzed water, reducing the need for harsh cleaning chemicals.

This feature, along with the pulsating spray mode, enhances the hygiene and comfort of the user experience.

However, the C2 only comes in an elongated size, which might limit its suitability for some bathrooms.

Also, the C2’s advanced features might be unnecessary for those who prefer a simpler, more straightforward bidet experience.

In summary, the C100 is a reliable choice for those seeking basic features and versatility in size options, while the C2 is ideal for those prioritizing comfort, sleek design, and advanced features like eWater+ and pulsating spray mode.

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Steven Bosque

Dale Cogburn

Hi, I’m Dale Cogburn! I’m passionate about helping people get the most out of their bidets. I’m an expert on all things related to bidets, from installation and maintenance to product reviews. I’ve been using and researching bidets for over 10 years.

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