Toto Washlet S2 vs Toto Washlet KS6

Toto

Toto Washlet S2

$349

4.8★ (5)

Toto

$500

4.7★ (45)

Quick take: The Toto Washlet S2 costs $151 less.

✓Instant heating fixes the old C2's biggest complaint — that tank ran lukewarm after roughly 35-45 seconds and the second user in a shared bathroom got cold water; the S2 stays warm indefinitely
✓At $348 street (Home Depot) it's the cheapest ticket into TOTO's EWATER+ system, which sanitizes the wand with electrolyzed water before and after every wash — rivals at this price rinse the nozzle with plain water
✓PREMIST wets the bowl before you sit, which measurably reduces waste sticking — owners report scrubbing the bowl about half as often
✓19% slimmer than the C2 it replaces, so it no longer looks like a fax machine bolted to your toilet
✓Warm-air dryer, deodorizer, and night light are all included — the old C2 had no night light, and Brondell's similarly-priced LE99 drops the deodorizer entirely
✓Ditching the always-on tank cut standby power draw; eco mode plus on-demand heat makes it cheaper to run than tank seats left plugged in 24/7
✓TOTO's docking-station install is genuinely 30-minute DIY — the seat slides off one bracket for deep cleaning and the included tee fits standard 7/8-inch supply lines
✓Both elongated and round versions at the same price — fit flexibility the home-center KS6 sibling doesn't offer

✗The side arm panel adds about two inches of width — in a narrow alcove it can pinch against a vanity, and unlike the S5 there's no way to add a remote later
✗No user presets: you re-dial pressure, position, and temperature every visit, while the S5/KS6 remote stores four personal profiles
✗The 1,273-watt instant heater demands a dedicated GFCI outlet and the cord is only 3.9 ft — budget for an electrician if your outlet is across the room
✗TOTO's dryer remains the gentlest in the business — owners consistently report 60+ seconds of lukewarm breeze for a job a square of paper finishes in five
✗One-year warranty is stingy next to the 3-year full coverage Bio Bidet puts on similarly-priced seats
✗Launched summer 2025, so there's no long-term reliability record — the C2's decade of proven durability doesn't automatically transfer to the new tankless platform
✗Spray tops out gentler than Korean rivals — r/bidets regulars who want serious pressure point buyers to a Bio Bidet instead of any TOTO
✗List price is $780 and some retailers ask near it — Home Depot and Amazon routinely sell the same seat for $350-430, so never pay list

✓Feature-for-feature an S5 twin — same remote with four presets, EWATER+, PREMIST, night light, dryer, and deodorizer — at $500 versus the S5's ~$650, making it the best value in TOTO's 2026 lineup
✓Replaces the K300, which was selling above $850 as stock dried up — the KS6 launched cheaper than its predecessor ever sold
✓This home-center line has been tankless since the K300 debuted in 2021, so the instant-heat platform here has more field history than the rest of the new S-generation
✓Home Depot distribution means local stock, easy returns, and price matching — no bidet-specialist shipping wait
✓Four-user preset memory matches seats costing twice as much; Brondell's $480 Swash 1400 stores only two profiles
✓PREMIST plus EWATER+ maintain both bowl and wand automatically — HD reviewers report visibly less bowl scrubbing within the first week
✓Same 82-97°F heated seat and 95-140°F adjustable dryer as the S5, with the seamless one-piece seat surface that wipes clean in a single pass
✓Home Depot reviewers repeatedly single out the smooth install: docking bracket, metal tee, and hose fit standard US toilets in about 30 minutes

✗Elongated only — round-bowl owners are pushed to the S2 or S5, and TOTO's fit guide is strict: measure the ~18.5-inch bolt-to-rim length before ordering
✗Cotton White only, so there's no Sedona Beige to match older colored fixtures
✗As a channel-exclusive SKU it gets thin coverage from bidet review sites — there's far less owner troubleshooting lore online than for the S5
✗One-year warranty, and TOTO parts are famously dear once it lapses — a replacement remote alone runs about $100
✗Same gentle TOTO dryer as every other Washlet: adjustable to 140°F but low airflow, so fully air-drying takes a couple of minutes
✗The 1,278-watt instant heater needs its own GFCI within reach of the 3.93-ft cord
✗No auto open/close lid or auto-flush hooks at this price — TOTO reserves those for the S7A at roughly 2.5x the cost
✗Launched mid-2025, so the Home Depot review base is enthusiastic but shallow (roughly 45 reviews) compared with years of K300 history