TOTO Washlet Review 2026: Best S2, S5, S7 & S7A Models Compared

The TOTO Washlet is the best-selling bidet toilet seat line in North America, and the current S series is the strongest version TOTO has made. This TOTO Washlet review covers the best models in the current S series — S2, S5, S7, and S7A — after TOTO discontinued the C2 and C5 that defined the lineup for years. The replacement models share one upgrade that changes the calculus at every price point: every model now uses an instantaneous water heater.

That single change eliminates the most common complaint about the old lineup. The C2 and C5 used tank-style heaters — warm water for 35–45 seconds, then cold. In a shared bathroom, the second person often got cold water. The new S2 and S5 deliver continuous warm water at any duration. The old competitive advantage that Brondell held at the C5 price point is gone.

The rest of the lineup has moved too. The S5 now comes with a wireless remote — previously a feature you had to pay S7 money to get. The S7A has absorbed the auto open/close lid and made it standard. The S7 sits between them without the auto lid but with optional auto flush capability.

This review covers what each model actually delivers, where the meaningful differences are, and which one makes sense for your bathroom.

The Current TOTO Washlet Lineup

All four models include: heated seat, warm air dryer, automatic deodorizer, ewater+ nozzle cleaning, PREMIST bowl misting, CLEAN RESIN nozzle material, oscillating and pulsating spray, adjustable spray position and pressure, night light, docking station for easy removal, and a one-year limited warranty.

TOTO's Core Technology

Before comparing models, three features appear across the full lineup and deserve their own explanation — they're what separates TOTO from every competitor at these price points.

ewater+

ewater+ is TOTO's electrolyzed water system. A mild electrical current treats the water to produce hypochlorous acid, a naturally occurring antibacterial compound. It does two things:

PREMIST: Before you sit down, the bowl is misted with ewater+, which prevents waste from adhering to the ceramic and reduces how often you need to scrub.

Nozzle cleaning: After each use, the wand is rinsed with ewater+ rather than plain water, reducing microbial buildup on the nozzle tip over time.

On the S2 and S5, ewater+ cleans the wand. On the S7 and S7A, ewater+ cleans both the wand and the bowl surface after each use — a meaningful upgrade for long-term hygiene maintenance.

The practical compounding effect: after six months of daily use, the bowl stays notably cleaner between scrubs and the nozzle requires less manual intervention. No competitor at the S2 or S5 price point includes anything equivalent.

CLEAN RESIN

TOTO's proprietary nozzle material. Less porous than standard plastic, which reduces the surface area where bacteria can accumulate. Not dramatic on any single use, but part of why TOTO seats stay cleaner over years of daily use compared to standard nozzle materials.

Seamless Seat Design

The seat-to-lid junction on all S-series models is fully sealed. There's no gap where water, waste, or cleaning products can collect. Competitors at lower price points typically have a visible gap at the back of the seat that requires a cotton swab or specialty brush to clean properly.

TOTO Washlet S2 — The New Entry Point

Price: ~$499 | Bowl options: Round, Elongated | Model: SW3346 | Outlet: GFCI 120V/15A required

The S2 is a materially better product than the C2 it replaces. It costs $100–140 more, but it includes features that required the old C5: instant-heat water, a warm air dryer, a deodorizer, and a night light. If you were considering a C2, you should be evaluating the S2 against what the C5 used to offer.

What the S2 delivers: instantaneous warm water with no depletion, heated seat (82–97°F), warm air dryer with three temperature settings (95–140°F), automatic deodorizer, oscillating and pulsating rear and front spray, ewater+ wand cleaning, PREMIST bowl misting, CLEAN RESIN nozzle, night light, and a docking station for tool-free removal.

What it omits: a wireless remote. The S2 uses a side-mounted arm panel. This is the correct tradeoff for a $499 seat — the panel controls every function — but it's the single feature that separates the S2 from the S5.

Day-to-day experience: The instant heat is the first thing you notice if you've used a tank-heater bidet before. Warm water through the full wash, every time, regardless of how recently the seat was used. Paired with the heated seat, the S2 delivers the complete warm experience that was a $450–500 ask on the old lineup at $499.

The arm panel is less elegant than a wireless remote but not a meaningful daily friction. You reach to the side once, adjust settings you remember from the day before, and don't think about it again.

Specs:

• Seat heating: 82–97°F
• Water heating: Instantaneous, continuous
• Spray temp: 95–104°F
• Spray volume: Rear 0.07–0.11 gal/min, Front 0.08–0.11 gal/min
• Dryer: 95–140°F, 3 levels, 8.83 ft³/min airflow
• Power: 1,273W standard / 1,428W max
• Power cord: 3.9 ft (GFCI outlet required)
• Warranty: 1 year limited

Pros:

• Instant heat — the biggest C2/C5 weakness, now standard at entry level
• Full dryer and deodorizer included — no C2-style compromises
• ewater+ and PREMIST at the lowest TOTO price
• Night light included
• Round and elongated versions available

Cons:

• Side arm panel only — no wireless remote
• 3 dryer temperature settings vs 5 on S7/S7A
• ewater+ cleans wand only (not bowl — that's S7/S7A)
• One-year warranty

Buy it if: You want TOTO build quality and the full warm-water-plus-dryer experience and can live without a wireless remote. For most single-user households, the S2 is the right call.

TOTO Washlet S5 — The Sweet Spot

Price: ~$682 | Bowl options: Round, Elongated | Model: SW3446 | Outlet: GFCI 120V/15A required

The S5 is the model we recommend most often, and the upgrade story is simple: it's the S2 with a wireless remote and personalized memory settings for up to four users. That's the only difference — and it's the difference that matters most in a shared household.

The wireless remote controls everything: seat temperature, water temperature, water pressure, spray position, dryer temperature, oscillating mode, and deodorizer. After a week with a remote, a side panel feels like a step backward. The remote also stores four user profiles, so each person in the household can save their preferred settings and recall them without adjusting anything.

Everything else is identical to the S2: instant heat, three-setting dryer, deodorizer, ewater+ wand cleaning, PREMIST, CLEAN RESIN, night light, docking station, SoftClose lid, one-year warranty.

What changed from the old C5: The C5's biggest complaints were tank-style heat and no wireless remote. The S5 fixes both. It's a meaningfully better product than the C5 at a higher price ($682 vs ~$480 for the old C5), but the feature delta justifies the premium.

Day-to-day experience: The combination of instant heat and a wireless remote is the closest thing to a seamless experience available in a sub-$700 bidet seat. You don't think about the seat. You sit down, the wash is warm immediately, you dry, and you're done. The remote sits on the wall or a nearby surface and requires no reaching or searching.

Specs:

• Seat heating: 82–97°F
• Water heating: Instantaneous, continuous
• Spray temp: 95–104°F
• Spray volume: Rear 0.07–0.11 gal/min, Front 0.08–0.11 gal/min
• Dryer: 95–140°F, 3 levels, 8.83 ft³/min airflow
• Power: 1,271W standard / 1,426W max
• Power cord: 3.9 ft (GFCI outlet required)
• Warranty: 1 year limited

Pros:

• Wireless remote with 4-user personalized memory — was S7-tier in the old lineup
• Instant heat — no depletion, no cold finishes
• Full TOTO feature set: dryer, deodorizer, ewater+, PREMIST, CLEAN RESIN
• Round and elongated versions available
• Night light included

Cons:

• 3 dryer temperature settings vs 5 on S7/S7A
• ewater+ cleans wand only (not bowl)
• No auto open/close lid
• One-year warranty at a $682 price point

Buy it if: You want the wireless remote and instant heat combination at the most defensible price. This is the right seat for roughly 60–70% of buyers — it covers every core function and delivers the remote that used to require a $900+ investment.

TOTO Washlet S7 — The Premium Step

Price: ~$1,279 | Bowl options: Round, Elongated | Model: SW4726AT40 (Contemporary), SW4724AT40 (Classic) | Outlet: GFCI 120V/15A required

The S7 is where the lineup adds meaningful upgrades over the S5, but the story is more nuanced than the old S7 was.

What the S7 adds over the S5:

Five dryer temperature settings (vs three on the S5). The additional settings let you tune the drying experience more precisely. The airflow volume is identical (8.83 ft³/min), but more temperature granularity matters if you find the S5's three settings too coarse.

Wide front cleansing mode. A broader spray pattern for anterior wash that doesn't appear on the S2 or S5.

ewater+ bowl cleaning. On the S5, ewater+ cleans the wand only. The S7's ewater+ cleans both the wand and the bowl surface after each use — a genuine long-term hygiene upgrade.

Auto flush capability. With an optional auto flush kit installed on compatible TOTO toilets, the S7 can flush automatically. This is an add-on, not built-in — built-in auto flush is the S7A.

Two design styles. The S7 comes in Contemporary (lower profile, cleaner sightlines) and Classic (traditional bidet seat silhouette). Same specs, different aesthetic.

What the S7 no longer has vs the old S7: The previous S7 included automatic lid open/close as a standard feature. The new S7 does not — that's exclusively the S7A. If auto lid was your primary reason to consider the old S7, you now need to spend $125 more for the S7A.

Round bowl availability. Unlike the old S7 (elongated only), the new S7 is available in round.

Day-to-day experience: The step up from the S5 is real but narrower than the $597 gap might suggest. You're primarily paying for the ewater+ bowl cleaning, the design style options, and the auto flush upgrade path. If none of those is a priority, the S5 at $682 covers 90% of the daily experience.

Specs:

• Seat heating: 82–97°F
• Water heating: Instantaneous, continuous
• Spray temp: 86–104°F (wider range than S2/S5)
• Spray volume: Rear/Front 0.08–0.11 gal/min, Wide Front 0.09–0.11 gal/min
• Dryer: 95–140°F, 5 levels, 8.83 ft³/min airflow
• Power: 1,290W standard / 1,446W max
• Power cord: 3.9 ft (GFCI outlet required)
• Warranty: 1 year limited

Pros:

• ewater+ cleans bowl and wand — the full passive hygiene system
• Five dryer temperature settings
• Wide front cleansing mode
• Auto flush capable with optional kit
• Contemporary and Classic design styles
• Round and elongated available

Cons:

• No auto open/close lid — that's the S7A
• $597 premium over the S5 for upgrades most users won't notice daily
• Auto flush requires optional kit and compatible TOTO toilet
• One-year warranty at $1,279

Buy it if: ewater+ bowl cleaning or the auto flush upgrade path matters to you, and you're willing to spend the premium. If neither is a priority, the S5 delivers a very similar daily experience for $597 less.

TOTO Washlet S7A — Fully Automatic

Price: ~$1,404 | Bowl options: Round, Elongated | Model: SW4736AT40 (Contemporary), SW4734AT40 (Classic) | Outlet: GFCI 120V/15A required

The S7A is the S7 with two additions: a motorized auto open/close lid and built-in auto flush.

The auto lid uses a proximity sensor — the lid rises as you approach and closes automatically when you stand. After a week this stops feeling like a feature and starts feeling like a baseline. The practical benefit for hygiene — no touching the lid — is real for households where contact reduction matters.

The auto flush closes the last manual touchpoint. Combined with auto lid and ewater+ bowl cleaning, the S7A delivers a fully hands-free toilet experience from approach to departure.

The $125 premium over the S7 is clean and easy to evaluate: it's specifically for auto lid and built-in auto flush. If those features matter, the S7A is the correct choice. If they don't, the S7 — or more likely the S5 — is the better value.

Specs: Identical to S7 (same power draw, dryer specs, spray specs, water heating, warranty). The only additions are the auto lid motor and integrated flush mechanism.

Pros:

• Auto open/close lid — hands-free from approach to departure
• Built-in auto flush (no optional kit required)
• Full ewater+ bowl and wand cleaning
• Five dryer settings, wide front cleanse
• Round and elongated available
• Contemporary and Classic styles

Cons:

• $125 premium over S7 for two specific features
• One-year warranty at $1,404
• Auto flush still requires compatible TOTO toilet

Buy it if: You want the complete hands-free experience and are already spending S7 money. The lid and flush features are worth the $125 step-up over the S7 for buyers who value them — but for buyers who don't, the S5 at $682 is the smarter spend.

TOTO Washlet vs. Competitors: Side-by-Side Comparison

The new S series changes the competitive picture at the entry and mid levels. Brondell's primary advantage at the C5 price point was instant-heat water — that advantage no longer exists against the S2 or S5.

Brondell Swash 1400 vs TOTO S5: The Brondell wins on dryer airflow (strongest in this price range), three-year warranty, and costs $150 less. TOTO wins on build quality, ewater+ passive hygiene maintenance, and TOTO's parts and service network. The heat advantage Brondell had over the old C5 is gone — both are instant now. If dryer performance and warranty length are your priorities, Brondell. If long-term build quality and ewater+ matter more, TOTO.

Bio Bidet BB-2000 vs TOTO S2: The BB-2000 costs $100 less than the S2 and includes a wireless remote and UV nozzle sterilization. The tradeoff is build quality — the seat hardware and control mechanisms feel a generation behind TOTO's. For buyers who are remote-first and budget-conscious, it's a real alternative.

Kohler Purewash E930 vs TOTO S7: Kohler is ~$500 less than the S7 with instant heat and a wireless remote, but without ewater+ bowl cleaning or the auto flush upgrade path. TOTO's build quality and fit-and-finish are ahead at this price point.

Installation: What to Expect

All S-series Washlet seats install without a plumber. The process takes 20–40 minutes:

1. Turn off the water supply valve — the oval valve at the wall behind the toilet.
2. Flush to empty the tank, then disconnect the supply hose from the fill valve.
3. Install the T-valve — TOTO includes a brass T-valve that threads between the supply hose and fill valve, splitting water to both the tank and the bidet seat.
4. Remove your existing toilet seat — two bolts at the back of the bowl, accessible from underneath.
5. Mount the Washlet bracket — slides into the bolt holes, locks with the docking station mechanism. Tool-free on all S-series models.
6. Attach the seat to the docking bracket — clicks and locks into place.
7. Route the power cord to the GFCI outlet and reconnect the water supply.
8. Test — turn water back on, check the T-valve connection for leaks, run a test wash cycle.

What's in the box: Washlet seat and lid assembly, mounting bracket with docking station, T-valve with supply hose, power cord, and instructions. The S5, S7, and S7A include the wireless remote and wall bracket.

GFCI outlet note: All S-series seats require a GFCI 120V/15A outlet within approximately 4 feet of the toilet. The power cord is 3.9 feet. If your bathroom lacks a GFCI outlet near the toilet, a licensed electrician can add one — typically a 1–2 hour job.

Common Issues and Fixes

Seat feels loose or rocks slightly Check that the mounting bolts are fully tightened against the bowl surface. The docking station should click audibly when the seat locks in. A small amount of front-to-back movement is normal on most bidet seats; lateral wobble indicates the bracket isn't seated flush.

Nozzle not fully retracting Run the manual nozzle clean cycle. If the nozzle continues to stick, mineral scale on the nozzle rail is the most likely cause. Apply white vinegar on a cotton swab to the rail for mild buildup. TOTO sells a descaling kit for more significant buildup.

Dryer seems slow or cool The S-series dryers on all models take 60–90 seconds for most users. Set the temperature to maximum and allow the full cycle. If paper-free drying in under 60 seconds is the goal, the Brondell Swash 1400 produces more airflow. The S7 and S7A's five temperature settings give more control, but the airflow volume (8.83 ft³/min) is the same across all four S-series models.

Wireless remote not responding (S5, S7, S7A) Check battery level first. IR signal strength is affected by room size, construction materials, and ceiling color — the spec sheet notes that dark ceilings can reduce range. Keep the remote within direct line-of-sight of the seat's IR receiver for best results.

Error codes on panel TOTO error codes are documented in the installation manual included with the seat. Common codes: E1 (water supply interrupted), E3 (nozzle motor blocked), E7 (heating element fault). E1 and E3 are typically user-resolvable. E7 generally requires a service call.

Who Should NOT Buy a TOTO Washlet

Buyers who prioritize dryer airflow above all else. The S-series dryers are adequate and quiet, but Brondell's Swash 1400 produces meaningfully more airflow. If paper-free drying as fast as possible is the specific goal, Brondell wins on that spec.

Buyers expecting a multi-year warranty. Every S-series model carries a one-year limited warranty. At $682–$1,404, this is a notable limitation — Brondell offers three years at lower prices. If warranty length is a deciding factor, TOTO is not the answer.

Buyers looking for the lowest-cost path to a wireless remote. The S5 at $682 is the entry point for a wireless remote on a TOTO seat. The Brondell Swash 1400 and Bio Bidet BB-2000 both include wireless remotes at lower prices. They're not built to TOTO's standard, but the remotes work the same way.

Which TOTO Washlet Is Best?

The S series is the best TOTO has made at every price point, and the new S2 and S5 specifically represent the largest improvement over their predecessors. Instant heat is now table stakes across the lineup — not a premium feature.

Buy the S2 if you want TOTO build quality and the full heated-seat, warm-water, warm-dryer experience at the lowest TOTO price, and you don't need a wireless remote. It covers everything the old C5 covered and costs less than the old C5 did.

Buy the S5 if you want the wireless remote and 4-user memory settings. This is the right seat for most buyers — especially shared bathrooms. The jump from S2 to S5 ($183) is the most value-dense upgrade in the lineup.

Buy the S7 if ewater+ bowl cleaning or the design style options (Contemporary vs Classic) matter to you, or if you want the auto flush upgrade path for a future compatible TOTO toilet. The daily experience over the S5 is incremental — the $597 gap is only justified if the specific S7 features are on your list.

Buy the S7A if you want the complete hands-free experience — auto lid, built-in auto flush, ewater+ bowl cleaning — and are already spending S7-level money. The $125 step-up from the S7 is the most straightforward value decision in the lineup.

Consider Brondell Swash 1400 instead if dryer airflow, a three-year warranty, and a lower price are your priorities. It's not built to TOTO's standard, but it wins on those three specific specs.

For the full competitive landscape across all brands and price points, see the Best Bidet Toilet Seats guide. For installation questions, see How to Measure Your Toilet Before Buying a Bidet.

Is a TOTO Washlet Worth It?

The TOTO Washlet earns its price through features that compound over time: ewater+ passively maintains nozzle and bowl hygiene between cleanings, CLEAN RESIN resists bacterial buildup on the wand, and the seamless seat construction eliminates the gap that collects grime on cheaper seats. These aren't specs that show up in a one-day comparison — they're what separates a TOTO Washlet after two years of daily use from a lower-cost alternative. For buyers who want a bidet seat that maintains itself and is built to last, the S series is the most defensible choice at every price point from entry-level ($499 S2) to full-automation ($1,404 S7A).

Frequently Asked Questions

Is the TOTO Washlet S5 worth $682? For most buyers, yes. The S5 delivers instant heat, a wireless remote with 4-user memory, a full dryer and deodorizer, and TOTO's ewater+ system in one package. The previous model that covered all of those features (old S7) cost $900+.

What's the difference between the S2 and S5? One thing: the remote. The S5 has a wireless multifunction remote with personalized memory for four users. The S2 has a side-mounted arm panel. All other specs — water heating, dryer, deodorizer, ewater+, night light — are essentially identical.

What's the difference between the S7 and S7A? Auto open/close lid and built-in auto flush. The S7A adds both as standard. The S7 can be set up with auto flush via an optional kit on compatible TOTO toilets, but has no auto lid. The S7A has both built-in for $125 more.

Does the TOTO Washlet S7 have an auto open lid? No — that moved exclusively to the S7A in the current lineup. The previous S7 included auto open/close; the new S7 does not.

Does the TOTO Washlet fit on any toilet? All four S-series models are available in round and elongated versions. The S2 and S5 are compatible with most standard two-piece toilets. One-piece toilets require compatibility verification with TOTO's list before ordering. The S7 and S7A come in Contemporary and Classic styles — same specs, different design profiles.

How long does a TOTO Washlet last? With daily use, 8–12 years is a reasonable expectation. The nozzle assembly and heating element are the most common serviceable components. TOTO maintains a parts supply for discontinued models longer than most competitors in the bidet category.

Do the new S-series seats require professional installation? No. Installation takes 20–40 minutes with basic tools. The only requirement that may need a licensed electrician is a GFCI outlet if one doesn't already exist near the toilet.

What happened to the C2 and C5? Discontinued and replaced by the S2 and S5. The new models are meaningfully better — instant heat across the board, dryer on the S2, wireless remote on the S5.