TOTO Washlet C2 vs C5: What’s Actually Different?

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Short answer: on TOTO’s official comparison chart, the C2 and C5 share the same wash, dryer, deodorizer, PREMIST, and EWATER+ features. The main difference is controls: the C2 has a side panel, while the C5 has a wireless remote with an illuminated touchpad. TOTO’s manuals also list the C5 body as narrower (383 mm vs 472 mm wide).

How we compare: every spec in this article comes from official manufacturer specifications and manuals (starting with TOTO USA’s official product page), all listed under Sources below. Cost or usage estimates use the third-party data cited there. We don’t run hands-on tests, and if a spec isn’t published, we say so. Last updated: October 2026.

I live in Japan, where bidet seats with wall-mounted remotes are common in newer homes.

I haven’t installed either seat. This comparison uses TOTO USA’s comparison chart and official instruction manuals.

Quick Comparison Table

Feature	TOTO C2 (SW3074)	TOTO C5 (SW3084)
Controls	Side panel	Wireless remote (illuminated touchpad)
Shape	Elongated	Elongated
Rear / soft rear / front	Yes / Yes / Yes	Yes / Yes / Yes
Oscillating / pulsating	Yes / Yes	Yes / Yes
Water pressure settings	5	5
Water temperature settings	3	3
Heated seat (settings)	Yes (3)	Yes (3)
Warm-air dryer	Yes	Yes
Air temperature settings	3 (TOTO chart)	3 (TOTO chart)
Deodorizer	Yes	Yes
PREMIST	Yes	Yes
EWATER+	Yes (wand)	Yes (wand)
Energy-saver timer	6, 9 hours	6, 9 hours
Rated / max power	403 W / 512 W	403 W / 512 W
Water heater	Tank type	Tank (0.13 gal)
Dimensions (manual)	W 472 x D 530 x H 147 mm	W 383 x D 530 x H 147 mm
Weight (manual)	About 11 lb	Not captured in my check*
Where to buy	TOTO C2 SW3074	TOTO C5 SW3084

*I couldn’t confirm the C5’s weight from the official manual excerpt, so it’s left out.

Key differences at a glance

• Controls: The C2 uses a side control panel on the seat, while the C5 uses a wireless remote with an illuminated touchpad.
• Body width: TOTO’s manuals list the C5 at 383 mm wide, narrower than the C2’s 472 mm.
• What stays the same: TOTO’s chart shows the same spray, seat, dryer, deodorizer, PREMIST, EWATER+, and energy-saving features, and the same 403 W rating (512 W max).

The Differences

1. Remote vs side panel

This is the difference you’ll notice every day. The C2’s controls sit on an arm panel attached to the seat. The C5 uses a slim wireless remote with an illuminated touchpad, according to TOTO’s C5 product page.

A wall-mounted remote keeps the side of the seat clear and is easier to read in a dim bathroom.

2. Body width

TOTO’s manuals list the C2 at W 472 mm and the C5 at W 383 mm. Depth and height are the same (530 mm and 147 mm). The C2’s extra width is likely from the side control panel, but TOTO doesn’t explicitly say so.

3. Everything else is the same on the chart

The chart shows the same features for both:

• Spray modes and settings
• Heated seat settings
• Dryer and deodorizer
• PREMIST and EWATER+
• Energy saving

Power ratings are also identical, 403 W rated and 512 W max.

Note on Settings: 3 or 5?

TOTO’s current online comparison chart lists 3 air temperature settings for both models. TOTO’s C5 product page also says “three variable temperature settings” for the dryer. Some spec sheets hosted by third-party retailers say “five.” I’ve used TOTO’s own pages here.

Availability

TOTO’s current Washlet fit chart PDF doesn’t list the C2 or C5. Both still have pages on TOTO’s site. A third-party review site (BidetScout) describes the C5 as discontinued and replaced by the S5. TOTO doesn’t state that on the pages I checked, so treat it as unconfirmed. Check stock and the seller before ordering.

Who Should Buy Which?

Choose the C2 if you:

• Are fine with side-panel controls
• Want the same wash and hygiene features at the lower model tier

Choose the C5 if you:

• Want a wireless remote you can mount on the wall
• Prefer a narrower seat body (383 mm vs 472 mm)

If you want instant water heating and 5-level settings, the next step up is covered in TOTO C5 vs S7. I also estimated the C5’s yearly electricity cost in TOTO Washlet C5 power consumption.

Instant vs Tank Heating: TOTO Japan’s Explanation

TOTO Japan sorts Washlets into instant-heating (瞬間式) and tank-type (貯湯式) models, and explains the trade-off plainly: tank models keep a reservoir of warm water, while instant models heat water only when you use them. TOTO also notes that with instant models, in winter or when water is cold, it can take longer for the nozzle to extend after you press the wash button. The C2 and C5 are US-market models; Japan’s lineup uses different names, with the Washlet Apricot at the top. Japanese units are built for 100 V and Japanese toilets.

Japanese reviewers of the current Apricot F3 on Kakaku.com often mention quieter operation and easier cleaning than older units; complaints include a motion sensor that may not react depending on where the door is, and a strongest spray some found weaker than before. (Third-party reviews, not our own testing.)

Washlet C2 vs C5: Frequently Asked Questions

What’s the difference between the TOTO C2 and C5?

Mainly the controls. The C2 uses a side panel and the C5 uses a wireless remote. The C5 body is also listed as narrower in TOTO’s manuals.

Do the C2 and C5 have the same features?

On TOTO USA’s comparison chart, yes. Spray, dryer, deodorizer, heated seat, PREMIST, and EWATER+ are the same.

Do they use the same power?

Yes. Both list 403 W rated and 512 W maximum.

Are the C2 and C5 still sold?

They still have pages on TOTO USA, but they’re missing from TOTO’s current fit chart, and a third-party site reports the C5 as discontinued. Check current availability.

Do they fit round toilets?

Both are listed as elongated models.

Related comparisons

• TOTO Washlet A2 vs C2: Is the C2 Worth the Upgrade?
• TOTO Washlet C5 vs S7: Tank or Instant Heating?
• TOTO Washlet C5 Power Consumption: Watts and Yearly Cost
• Will a TOTO Washlet Fit My Toilet? Round vs Elongated

Sources

• TOTO USA, WASHLET Bidet Comparison Chart: https://www.totousa.com/washlet-new
• TOTO USA, WASHLET C5 Elongated product page: https://www.totousa.com/washlet-c5-elongated
• TOTO USA, C5 Instruction Manual (PDF): https://www.totousa.com/filemanager_uploads/product_assets/OwnersManual/D07869_C5_Washlet_EN_IM.pdf
• TOTO USA, SW3074/SW3024 Instruction Manual (PDF): https://www.totousa.com/filemanager_uploads/product_assets/OwnersManual/D07A82_SW3024_OM_EN.pdf
• TOTO USA, WASHLET Fit Chart (PDF): https://www.totousa.com/filemanager_uploads/product_assets/OwnersManual/Washlet-Fit-Chart.pdf
• BidetScout (third party, availability note only): https://bidetscout.com/best/toto-washlet-c5-review/
• TOTO Japan FAQ: instant vs tank-type Washlet (qa.toto.jp): https://qa.toto.jp/faq_detail.htm?id=161801
• TOTO Japan: Washlet Apricot product page (jp.toto.com): https://jp.toto.com/products/toilet/apricot/
• Kakaku.com user reviews: TOTO Apricot F3 (Japanese): https://review.kakaku.com/review/J0000042091/

Specs checked October 2026.