What Is a TOTO Washlet, and How Is It Different?

On this page (9 sections)

1. What is a TOTO WASHLET, and how does it work?
2. How is a WASHLET different from a regular bidet seat?
3. What do PREMIST and EWATER+ do?
4. Which features matter when choosing a WASHLET?
5. Will a TOTO WASHLET fit your toilet?
6. How do you set up and care for a WASHLET?
7. What mistakes should you avoid before buying?
8. Which TOTO WASHLET should you choose?
9. What is a TOTO WASHLET worth buying for?

A TOTO WASHLET is an electric bidet toilet seat made by TOTO. It uses a water wand for personal cleansing, and depending on the model, it can also add a heated seat, warm air dryer, deodorizer, or other cleaning features.

“WASHLET” is TOTO’s brand name for its electronic bidet seats. “Bidet toilet seat” is the broader category, which includes seats from many brands and models with different features.

What is a TOTO WASHLET, and how does it work?

A TOTO WASHLET replaces a compatible toilet seat and uses a directed water spray for cleansing after you use the toilet. Its controls let you start the wash, and many models let you adjust water temperature or pressure.

The exact controls and options depend on the model. Some use an attached side panel, while others come with a remote; some add a warm air dryer, heated seat, or features that clean the bowl or wand.

If you’re new to the category, our guide to what a bidet toilet seat is explains the basic parts and how these seats fit into a bathroom routine. A WASHLET follows the same basic approach, with TOTO’s model-specific features layered on top.

A WASHLET is an electric seat, so plan for power as well as a water connection. It’s a better fit for someone who wants button-controlled cleansing and comfort features than for someone who wants a simple, non-electric attachment.

How is a WASHLET different from a regular bidet seat?

A WASHLET is TOTO’s brand of electric bidet seat. A bidet seat from another brand may be electric or non-electric, and its control style and features can differ.

The brand name doesn’t point to one fixed feature set. Compare individual models for warm-water settings, controls, drying, seat heating, and cleaning functions rather than assuming every WASHLET does the same things.

For a closer comparison of the category and brand, read TOTO WASHLET vs. a regular bidet seat. If you’re still deciding between seat types, our guide to how to pick a bidet toilet seat covers the wider range of options.

What do PREMIST and EWATER+ do?

PREMIST mists the toilet bowl before use, while EWATER+ cleans a wand inside and out. They address different parts of the toilet, and neither replaces routine care of the seat and bathroom.

The C5, S2, and S5 include PREMIST and EWATER+ wand cleaning. The A2 has a self-cleaning wand, but its feature description doesn’t specify PREMIST or EWATER+.

Which TOTO WASHLET models include PREMIST?

The C5, S2, and S5 include PREMIST. Choose among them based on the controls and other features you want.

The C5 and S2 both include a dryer and deodorizer, but they differ in controls. The C5 has a remote, while the S2 uses an attached side panel and adds a built-in nightlight.

Before buying, compare the exact model instructions with your toilet and bathroom setup. For a quick feature-by-feature view, use our TOTO WASHLET comparison chart.

Which features matter when choosing a WASHLET?

The best WASHLET for you is the one whose controls and features match your routine. Start with the functions you expect to use, then check whether the seat fits your toilet and bathroom.

• Choose a remote if you want controls you can hold and set down nearby. The C5 and S5 use remotes, and both offer user memory settings.
• Choose a side panel if you prefer controls attached to the seat. The S2 and A2 use side panels.
• Look for instantaneous water heating if a continuous warm-water stream is a priority. The S2 and S5 include this feature.
• Choose a dryer if you want a warm air option after cleansing. The C5, S2, and S5 include one.
• Consider PREMIST and wand cleaning if you want features that care for the bowl surface or wand between uses. The C5, S2, and S5 include both PREMIST and EWATER+ wand cleaning.

The A2 is the simpler fit among these four for someone who wants warm-water cleansing, an adjustable heated seat, and an attached control panel without prioritizing PREMIST, a dryer, or a deodorizer. Check its feature details against your must-haves before you choose.

The S5 suits someone who wants the C5’s remote approach with instantaneous water heating and four user memory settings. It also includes a nightlight, deodorizer, and dryer, so it makes sense when those extras will be used.

The S2 is a strong choice if you want instantaneous water heating and prefer controls attached to the seat. Skip it if a remote is important to you, or if you want user memory settings, which the C5 and S5 include.

Will a TOTO WASHLET fit your toilet?

A WASHLET needs a compatible toilet, a suitable water connection, and access to power. Check the toilet shape, seat mounting area, available clearance, and outlet location before ordering.

Don’t rely on the word “elongated” alone to confirm a fit. Measure your toilet and compare the measurements with the installation instructions for the exact model; the bidet seat fit checklist explains what to check.

A missing hot-water line doesn’t automatically rule out an electric seat. Some models heat water at the seat, so read how warm-water bidet seats work without a hot water line to understand the setup questions.

Also make sure the outlet can serve the seat safely and is close enough for the power cord. If the outlet or water connection needs work, account for that before deciding whether a WASHLET is practical for your bathroom.

How do you set up and care for a WASHLET?

A WASHLET setup involves fitting the seat to the toilet, connecting its water supply, and plugging it into a suitable outlet. The C5 and A2 include installation hardware, and TOTO describes both as suitable for do-it-yourself installation.

Read the instructions before starting, and check that your toilet and bathroom match the model’s requirements. Don’t force a connection or improvise around a poor fit; ask a qualified installer if you’re unsure about the water or electrical work.

For everyday use, begin with a comfortable water temperature and pressure, then adjust gradually. If the seat has a remote or user memory, set it up for the people who will use it, and use the wash controls that match your preference.

Keep the seat and wand clean according to the care instructions for that model. PREMIST and self-cleaning functions help with specific parts of the toilet, but they don’t clean every surface or remove the need to wipe down the seat and surrounding area.

What mistakes should you avoid before buying?

The most common buying mistake is choosing by brand name alone. Compare the model’s control style, water heating, comfort functions, and cleaning features, because the four seats here don’t share one identical feature set.

A second mistake is assuming a WASHLET will fit any toilet. Confirm the shape and dimensions, mounting space, water connection, and outlet before ordering.

It’s also easy to pay attention to features you won’t use while missing one you care about every day. If you want a remote, don’t choose a side-panel model; if you want a dryer or deodorizer, confirm that the model includes it.

Finally, don’t assume that self-cleaning means maintenance-free. Follow the seat’s care instructions and keep the toilet and seat surfaces clean.

Which TOTO WASHLET should you choose?

Choose the A2 if you want warm-water cleansing and a heated seat with an attached side panel. Choose the S2 if you want those controls plus instantaneous water heating, PREMIST, EWATER+, a nightlight, dryer, and deodorizer.

Choose the C5 if you want a remote with PREMIST, EWATER+, a dryer, and two user memory settings. Choose the S5 if you want a remote and those cleaning and comfort features, along with instantaneous water heating and four user memory settings.

A WASHLET is a good fit when you want an electric bidet seat and your bathroom has a compatible toilet, water connection, and suitable outlet. If you’re still weighing comfort options, are heated toilet seats worth it? can help you decide whether seat warmth matters in your routine.

What is a TOTO WASHLET worth buying for?

A TOTO WASHLET is worth considering if you want button-controlled water cleansing and will use its added comfort features. Pick the A2 for a simpler side-panel setup, the S2 for instantaneous heating and side controls, the C5 for a remote, or the S5 for a remote and a broader set of features.

Start with the features you’ll use most, then confirm fit and installation needs. For model differences, see the TOTO WASHLET comparison chart; for other brands and seat styles, use our bidet toilet seat guide.

Frequently asked questions

What does TOTO WASHLET mean?

TOTO WASHLET is the brand name for TOTO's electronic bidet toilet seats. A WASHLET replaces a standard toilet seat and uses a water wand for personal cleansing.

Features vary by model and can include adjustable warm water, a heated seat, a warm air dryer, and extra cleaning functions.

Is a TOTO WASHLET the same as a bidet seat?

A TOTO WASHLET is a bidet seat made by TOTO, so it belongs to the wider bidet toilet seat category. Other brands make bidet seats too, and those seats can have different controls and features.

Compare the specific model names and features before choosing.

Does a TOTO WASHLET need electricity?

The electric WASHLET models covered here need power for features such as warm water, seat heating, or a dryer. Your bathroom needs an outlet suitable for the seat and a compatible water connection.

Check the installation instructions for the model and your bathroom before buying.

Do all TOTO WASHLET models have the same features?

No. Features differ by model.

The C5, S2, and S5 include PREMIST and EWATER+ wand cleaning, while the A2 has a self-cleaning wand.

Controls also vary: the C5 and S5 use a remote, while the S2 and A2 use an attached side panel.