Best TOTO Washlet 2026: The US Lineup Quietly Renamed Itself (and What It Costs in Japan)

Disclosure: this article contains affiliate links, and I may earn a commission if you buy through one, at no extra cost to you. I have not tested any of these seats. Everything below comes from manufacturer spec sheets, retailer catalogue data and published Japanese price listings that I pulled myself on 13 August 2026 and re-pulled in full on 26 August 2026. Where I couldn’t verify something, I say so.

If you search for the best TOTO Washlet, most of what comes back is out of date — and not by a little.

The roundups still recommending the C200, the C5, the K300, the S500e and the S550e are describing a product range that TOTO USA no longer lists. On TOTO’s own US site today, the WASHLET bidet seat menu reads: S7A, S7, S5, S2, KS6, KS5. Nothing else. And when I pulled the full 486-product catalogue from BidetKing.com — one of the larger US bidet specialists — on 13 August 2026, every single one of those older seat-only models came back flagged out of stock, right down to the open-box listings. I re-pulled it on 26 August: still none of those seats in stock.

The S550e’s own product page on that site now carries a line from the retailer: “The S550e has been discontinued and is being replaced by the new and improved TOTO S7A Washlet.”

So this guide is built around what you can actually buy in August 2026, what TOTO lists it at, what one specialist retailer is charging for it on the day I checked, and — the part most English-language roundups skip — what the equivalent machines cost on a Japanese shopping site, in the country where I live and where these things are ordinary furniture.

Two honest caveats before we start. First, I haven’t sat on any of these. I can tell you what you’re buying and what you’re paying; I can’t tell you how the spray feels, and anyone who claims a meaningful difference between a $492 seat and a $1,289 seat without sitting on both is guessing. Second, I’m not going to make any health or hygiene claims. TOTO markets a technology called EWATER+ and describes it as electrolysed water used to keep the wand and bowl clean. That’s TOTO’s description of what the machine does, not a claim by me about what it does for you.

Who This Guide Is NOT For

• If you want a $40 non-electric bidet attachment. That’s a completely different product — cold water, no seat, no power. It’s a perfectly sensible purchase and this isn’t the article for it. Nothing below costs less than $492.
• If there’s no grounded outlet behind your toilet. TOTO’s own S7A product page states it plainly: “Need 120 GFCI outlet behind toilet.” Every seat here is rated AC 120 V, 60 Hz and draws over 1,270 W at peak. If your bathroom has no outlet within about four feet of the bowl — the power cord on all of these is 3.93 ft (1.2 m) — you’re paying an electrician before you pay TOTO.
• If you want to try one and send it back. BidetKing’s published refund policy accepts returns on new and unused seats within 45 days, but is explicit that anything “hooked up to water or used in any way” is not eligible, for public-health reasons. The buyer pays return shipping, and units returned without their original packaging are subject to a 15–25% restocking fee. That’s the one policy I read in full, so I won’t generalise about the rest of the trade — but read yours before you order, because there is very likely no try-before-you-buy here.
• If you’re hoping to import a Japanese-market Washlet to save money. It’s cheaper. It is also a bad idea, for five specific reasons I’ll go through below.
• If you want medical advice. I have none. Ask a doctor, particularly if you’re buying because of a health condition.

What Changed: The 2026 Lineup, Decoded

The naming reset is the single most useful thing to understand here, because it’s why the search results are lying to you.

Confirmed by the manufacturer’s and retailer’s own copy:

• The S7 replaces the S500e
• The S7A replaces the S550e
• The only difference between S7 and S7A is the automatic opening/closing seat and lid. BidetKing’s product copy for both models says it in the same words: “They are otherwise identical.”

Less firmly established: TOTO’s US menu now shows S2, S5, KS5 and KS6 sitting where the C2, C5 and K300 used to sit. I could not find a published one-to-one migration chart from TOTO, so treat that as the shape of the new range rather than a promise about internals.

That said, one thing has clearly moved, and in the buyer’s favour. The old C2 and C5 were tank-type seats — they heat a reservoir of water, and when it runs out, the warm water runs out. TOTO’s spec pages for the new S2 and S5 both list an instantaneous (tankless) water heater, plus EWATER+ and PREMIST. That’s a genuine upgrade at roughly the same money: BidetKing’s out-of-stock C2 elongated was listed at $436, and the in-stock S2 that has taken its place is $492 with tankless heating.

The Three Things That Actually Separate These Seats

Ignore the feature bullets. Across the S2, S5, KS6, S7 and S7A, every model’s published feature list includes EWATER+, PREMIST, an instantaneous water heater, a heated seat, a warm air dryer, an automatic deodoriser and a night light. Three things vary.

1. How you control it. The S2 has a side arm control panel — buttons on a paddle attached to the seat. Everything above it has a wireless remote with four-user memory. That’s the entire published difference between the S2 at $492 and the S5 at $668. $176 for a remote control.

2. Whether the lid opens by itself. This is the S7 → S7A jump, and it’s where the pricing gets interesting. At TOTO’s list price the gap is $179 ($1,826 vs $2,005). At BidetKing on 26 August, the gap was $66 ($1,223 vs $1,289), unchanged from 13 August. If auto-open matters to you at all, the street pricing makes it close to a rounding error — but check both numbers on the day, because that spread is a retailer decision, not a TOTO one.

3. Spray range and warranty. The S7A’s spec sheet lists four spray modes including a wide front cleanse, water temperature adjustable from 86–104 °F, and five dryer temperature settings. The S5, S2 and KS6 list front and rear only, water from 95–104 °F, and three dryer settings. The warranty tracks the same split: TOTO extended the S7 and S7A to two years residential / one year commercial, while the S2, S5 and KS6 spec sheets still say one year limited.

The Comparison Table

All US prices captured on 26 August 2026, cross-checked against my 13 August pull: every figure below was identical on both dates. “List” is TOTO USA’s own published MSRP for the Cotton White elongated SKU. “Street” is BidetKing.com’s listed price for the same SKU on the same day. Prices in this category move; check both before you buy.

Two things fall out of that table immediately.

The street discount is not uniform. The S7A sells at 36% under list, the S2 at 37%, the KS6 at 34%, the S5 at 31%. There’s no single “TOTO discount” — you have to price each model.

Ignore the retailer’s crossed-out price. BidetKing has since added a strikethrough “was” price to the S2, S5 and KS6 listings — $780 on all three. Those seats list at $775, $974 and $1,057, so one $780 anchor can’t be the list price of more than one of them; it’s the price of the Sedona Beige S5. The KS6 badge therefore advertises an $81 saving on a seat $358 under MSRP. Price against the “List” column; treat the strikethrough as decoration.

The KS6 is a puzzle. Its feature list on TOTO’s own site is word-for-word identical to the S5’s. I compared them line by line and found no difference in the published functions at all; the only variance is in shipping dimensions (24-1/4” × 17-7/8” × 7-3/8” for the KS6 vs 24-3/8” × 17-9/16” × 7-7/16” for the S5). The KS6 costs $83 more at list and $31 more at street. If there’s a real difference, TOTO isn’t publishing it, and I’m not going to invent one for you. Buy the S5.

The Models, One at a Time

WASHLET S7A — $1,289 (list $2,005)

The flagship, and the one I’d point most buyers at if the budget stretches. It’s the only seat in the range with EWATER+ applied to both the wand and the bowl (everything below it is wand-only), the widest water temperature range, five dryer settings, four spray modes, and the auto open/close lid with night light. The retailer’s product copy puts rear height at 4.1”, which it calls among the slimmest on the market. Shipping weight on TOTO’s spec sheet is 15 lb, so this is a one-person job, not a freight delivery.

The version to buy is SW4736AT40#01 — Cotton White, Elongated, Contemporary lid, $1,289. The other four variants on the same page all cost more for reasons that have nothing to do with function:

• Classic lid (bevelled edge), elongated, white: $1,404 — $115 for a different lid profile
• Round, contemporary, white: $1,404 — also $115 more than the elongated, despite an identical $2,005 list price. (It was $1,343 on 13 August — the round-bowl premium more than doubled in thirteen days while every other price held still.)
• Sedona Beige, either lid: $1,543 — a $254 premium over white

Downsides worth knowing. TOTO removed the LCD screen from the back of the remote in this generation; BidetKing’s own copy calls that out, noting it saves battery but makes advanced settings harder to change.

One thing you can safely ignore: TOTO’s US page for the S7A carries a “LIMITED INVENTORY” badge. The identical badge and tooltip sit on the S7, KS6, S5, KS5 and S2 pages, and on Neorest toilets at $6,932 and $9,043 — template boilerplate, not a signal about any particular seat. The stock information that meant something this year was the retailer catalogue, where the discontinued models show zero on both of my pulls.

Check the current price, colour and lid options on the TOTO WASHLET S7A

WASHLET S7 — $1,223 (list $1,826)

Identical to the S7A minus the motorised seat and lid, per both TOTO’s and the retailer’s own descriptions. At a $66 street gap, the S7 is only the right buy if you actively dislike the idea of a lid that moves on its own — some people find the sensor triggers when they walk past the bathroom door. The same two-year residential warranty applies.

WASHLET KS6 — $699 (list $1,057)

Tankless, EWATER+ on the wand, PREMIST, wireless remote with four-user memory, night light, SoftClose seat. A complete premium seat with nothing obviously missing. See the note above about it being functionally indistinguishable from the S5 on paper, for $31 more.

WASHLET S5 — $668 (list $974)

The value pick of the range, and the one that makes the most sense for most households. You get the tankless heater, EWATER+, PREMIST, the wireless remote, the four-user memory and the night light. What you give up against the S7A: bowl-cleaning EWATER+, the auto lid, the wider spray temperature range, two extra dryer settings, and one year of warranty. That’s $621 of difference at street prices.

WASHLET S2 — $492 (list $775)

The entry point, and a much better one than the C2 it appears to have replaced, purely because of the tankless heater. The compromise is the control: a side arm panel rather than a remote. Practically, that means reaching down and sideways rather than picking up a remote, and no per-user memory. One note of caution — BidetKing’s own site filter tags the S2 under “Wireless Remote”, while both TOTO’s and BidetKing’s feature lists say “convenient arm control panel.” I believe the feature list; confirm before ordering if it matters to you.

WASHLET KS5 — list $822, not carried

TOTO lists it (SW3216#01). It wasn’t in BidetKing’s catalogue at all on 13 August. Mentioned only so you know it exists if you see it elsewhere.

What the Same Machines Cost in Japan

Here’s the part I’m actually well-placed to write.

In Japan a washlet is not a luxury item. Japan’s Sanitary Equipment Industry Association, citing the Cabinet Office’s consumer survey, put household penetration above 80% as far back as March 2016. They’re standard in rented flats, in shopping centres, and in a lot of convenience stores. TOTO launched the first Washlet — the Washlet G — in June 1980, and its own press release announcing the 50-millionth unit shipped puts that milestone at March 2019.

The domestic range doesn’t use the US names at all. TOTO Japan’s premium seat line is ウォシュレット アプリコット (Washlet Apricot), in four tiers — F1, F2, F3, F4 — each with an “A” variant that adds automatic bowl flushing. TOTO publishes its own suggested retail prices openly on jp.toto.com, and price comparison site kakaku.com publishes what shops actually charge. Both, on 26 August 2026:

Rate: ¥159.24 to the dollar, ECB reference rate for 25 August 2026. Japanese prices include 10% consumption tax; US prices exclude sales tax. TOTO Japan’s list prices were unchanged since 13 August; every kakaku street price moved, none by as much as 2%.

The F4A is the closest thing Japan has to the S7A on paper: instantaneous heating, TOTO’s きれい除菌水 (the domestic name for the electrolysed-water system marketed abroad as EWATER+), warm air dryer, and an auto-opening lid. Feature list for feature list, they line up. I can’t tell you they’re the same machine — TOTO publishes no cross-market equivalence table that I could find, and the remote systems are visibly different — but a Japanese buyer walks out with that specification for about $700 all-in, against $1,289 for the S7A in the US.

The discounting culture is the other half of the story. In Japan, the F4A’s street price is 46% of TOTO’s own list. In the US, the S7A’s street price is 64% of list. Japanese retail simply discounts appliances harder, and the effect compounds with the exchange rate.

One more number you can only get here: every Japanese listing carries an annual electricity cost alongside the specs, part of the country’s appliance energy-labelling data. The flagship F4A is rated at ¥1,620 a year (~$10). The tank-type BV2, TOTO’s cheap model, is rated at ¥4,293 a year — 2.6× the flagship. Those are calculated at Japanese tariffs and Japanese usage assumptions, so don’t port the yen figure to your own bill. Port the ratio: on the manufacturer’s own published figures, the tankless models cost well under half as much to run as the tank ones. That’s the strongest argument for the new S2/S5 generation over anything with a reservoir.

(If the transpacific price gap on Japanese hardware interests you, I went through the same exercise on a much more expensive object in my Japanese massage chair guide, where the multiple is worse.)

Why Importing a Japanese Washlet Is a Trap

Every few months someone works out that the Apricot F4A is $589 cheaper than the S7A and starts pricing shipping. Five concrete problems, all verifiable before you spend anything:

1. Voltage. Japan’s domestic mains is 100 V. Every US Washlet in the table above is rated AC 120 V, 60 Hz on TOTO’s spec sheet. The S7A draws 1,290 W in normal operation and 1,446 W at peak. You’d be running that permanently through a step-down transformer, in a wet room.

2. The seat is sized to a different standard. TOTO Japan’s Apricot page specifies the seat as an エロンゲートサイズ（大型）・レギュラーサイズ（普通）兼用タイプ — a single seat designed to fit both Japanese bowl sizes. The US range makes you choose a distinct Elongated or Round SKU. A Japanese seat is engineered around Japanese bowl geometry; it is not a universal fit for an American bowl, and TOTO makes no such claim.

3. The model number depends on which toilet you’re pairing it with. TOTO’s own footnotes on the Apricot page explain that TCF4744AK is for 4.8-litre bowls in the Pure Rest EX / QR / MR / CS597 families, while TCF4744AM is for a different flush lever position. It’s sold as part of a system, not as a standalone accessory.

4. The remote is on the wall, and it’s in Japanese. The Apricot F-series is a 壁リモコン — wall-remote — design. You’re mounting and pairing a wall panel with Japanese labelling, permanently, in your bathroom.

5. No warranty, and the plumbing fittings differ. TOTO USA’s two-year residential coverage attaches to the US SKUs. A grey-import unit is outside that system entirely. And US supply fittings aren’t even internally consistent — BidetKing stocks a TOTO THP3141 Washlet Hose 1/2” Adapter at $14.95 precisely because the standard connection doesn’t always match. Add an unfamiliar Japanese inlet to that and you’re improvising with a pressurised water line.

Buy the US SKU. The $589 is buying you a machine that fits, plugs in, is in English, and can be repaired.

How TOTO Compares to the Rest of the Shelf

TOTO isn’t the only serious brand, and pretending otherwise would be dishonest. From the same catalogue pull on 13 August 2026, in-stock competitors at that retailer:

The honest read: at $492 the S2 is priced right inside Alpha and Brondell territory, and buying TOTO at that level is a straightforward decision. At $1,289 the S7A is not competing on price with anything except the Kohler, and you’re paying for the auto lid, the two-year warranty, bowl-side EWATER+ and TOTO’s parts network. Whether that’s worth $800 over a Swash 1400 is a judgement I can’t make for you without sitting on both, which I haven’t. I’d note only that I’ve listed prices for these competitors and nothing else — I haven’t compared their specs line by line, and this article isn’t a verdict on them.

Picks by Situation

Most people, most bathrooms — WASHLET S5, $668. Tankless, EWATER+, PREMIST, wireless remote, four-user memory, night light. It does everything the flagship does except open its own lid and clean the bowl, for roughly half the money. Confirm you want elongated (SW3446#01) or round (SW3445#01) before ordering.

You want the best one and the budget is there — WASHLET S7A, $1,289. Bowl-side EWATER+, four spray modes, the widest temperature range, auto lid, and the only two-year residential warranty in the range. Order SW4736AT40#01 specifically: Cotton White, Elongated, Contemporary lid. The other four variants on that page cost $115 to $254 more for a lid bevel, a bowl shape or a beige finish. See the current S7A listing and options

Tightest budget that still gets you a real Washlet — S2, $492. Tankless heating with an arm panel instead of a remote. The heater is the part that matters; the remote is convenience.

You were about to buy an S550e, S500e, K300, C5 or C200 because a roundup told you to — stop. They’re discontinued and out of stock. The S7A, S7 and S5 are their replacements.

You’re in Japan and shopping for yourself — ignore this entire article. Search 温水洗浄便座 on kakaku.com, sort by price, and buy an Apricot F1 for ¥68,000 or a KM-series for ¥35,000. The US model names don’t exist here.

The Bottom Line

The best TOTO Washlet in 2026 is, for most buyers, the S5 at $668 — because the tankless heater and the wireless remote are the two upgrades you’ll notice daily, and everything above it is spending several hundred dollars on a lid that opens itself.

The S7A at $1,289 is the genuine flagship and the only model with bowl-side EWATER+, four spray modes and a two-year warranty. It’s a real product with real engineering behind it, and if you want the best one TOTO sells in the US, that’s it.

Three things to carry away. First, check the model year: half the “best Washlet” content on the internet is recommending seats TOTO stopped making. Second, price the exact SKU, not the model — on the S7A alone, the same seat spans $1,289 to $1,543 depending on lid, bowl shape and colour. Third, work out your outlet situation before you order, because a GFCI outlet behind the toilet is not optional and not something you can return the seat over.

And if the Japanese price table above made you reach for a freight calculator: don’t. The $589 saving buys a 100 V machine with a Japanese wall remote, a seat sized to a Japanese bowl and no warranty on either side of the Pacific.

Check current pricing, stock and configuration on the TOTO WASHLET S7A

Sources

All retrieved 13 August 2026 and re-retrieved 26 August 2026 with a standard browser user agent. Every URL returned HTTP 200 on both dates.

• TOTO USA — WASHLET S7A (Contemporary, Elongated): list price, feature list, specifications, warranty — totousa.com
• TOTO USA — WASHLET S7 (Contemporary, Elongated) — totousa.com
• TOTO USA — WASHLET S5 — totousa.com
• TOTO USA — WASHLET S2 — totousa.com
• TOTO USA — WASHLET KS6 — totousa.com
• TOTO USA — WASHLET KS5 — totousa.com
• TOTO USA — extended warranty announcement for WASHLET S7 and S7A — totousa.com
• BidetKing.com — TOTO WASHLET S7A product listing and variant pricing — bidetking.com
• BidetKing.com — TOTO WASHLET S7 product listing — bidetking.com
• BidetKing.com — refund and returns policy — bidetking.com
• TOTO Japan — ウォシュレット アプリコット, manufacturer suggested retail prices and seat-size specification — jp.toto.com
• kakaku.com — TOTO warm-water washing toilet seat listings, lowest street prices and annual running-cost figures — kakaku.com
• Japan Sanitary Equipment Industry Association — household penetration of warm-water washing toilet seats — sanitary-net.com
• TOTO Japan press release — Washlet cumulative shipments pass 50 million, 38 years 8 months after the June 1980 launch — jp.toto.com
• USD/JPY reference rate 159.24, 25 August 2026 — Frankfurter (ECB reference rates)

US prices in this category are set by individual retailers and change without notice; Japanese street prices on kakaku.com change daily. Treat every figure here as a snapshot of 26 August 2026 and confirm before you pay. In thirteen days, one US price moved, three listings gained a meaningless strikethrough, and all seven Japanese street prices drifted. That is the normal decay rate for a page like this — including this one.