TOTO WASHLET+ vs WASHLET: Canadian Prices, T40 & Which to Buy (2026)

Prices in CAD as of September 25, 2026, from plumbingmarket.ca (Cotton/white). Prices and stock can change, so the product page always has the current number.

If you are shopping for a TOTO bidet in Canada, you will quickly run into two names that look almost identical: WASHLET and WASHLET+. One is a bidet seat you add to the toilet you already own. The other is a matched TOTO toilet and seat set where the water hose and power cord disappear into the toilet. The wash is the same. What differs is how the finished bathroom looks, what you have to buy, and what it costs.

This guide explains the difference in plain terms. It uses TOTO's own spec sheets and installation documents, real Canadian prices from our store, and the cost maths nobody else seems to publish: how much you actually pay for the "+" compared with buying the toilet and seat separately. If you have already decided on a seat and just need to choose between models, our TOTO WASHLET S2 vs S5 vs S7 vs S7A comparison covers that in detail.

Jump to: what the "+" really costs · price table · who should buy which · outlet & electrical · FAQ

TOTO WASHLET vs WASHLET+ at a glance

What is TOTO WASHLET+?

WASHLET+ is TOTO's name for a toilet and bidet seat designed as one system. TOTO describes it this way on its spec sheets: "Concealed supply connection for seamless installation." TOTO says it introduced the WASHLET+ lineup in 2017 as the first integrated toilet and WASHLET combination. On TOTO's own WASHLET vs WASHLET+ page, the company sums up the benefit: no supply connections, water or electrical, will show. TOTO also notes that this makes cleaning easier because there are fewer places for dust to collect.

A WASHLET+ system has two halves:

• A WASHLET+-ready toilet. The bowl has a hole in the mounting surface, between the seat and the tank, that the seat's hose and cord pass through. In TOTO model numbers these bowls carry T40. For example, TOTO's spec sheet for the Drake WASHLET+ S7A lists the bowl as C776CEFGT40, and the UltraMax WASHLET+ S7 uses the CST608CEFGAT40 toilet.
• A WASHLET+ seat. These seats are also marked T40 or AT40. TOTO's installation instructions describe the key step: for WASHLET+ models, insert the cord and hose into the hole on the far left of the mounting surface between the seat and the tank. With a regular WASHLET you rest them outside the bowl instead.

You can buy the two halves together as a set (TOTO model numbers starting with MW for floor-mounted sets, such as MW7763446CEFG for the Drake WASHLET+ S5). You can also buy a T40 toilet and an AT40 seat separately. More on that below.

How to read a WASHLET+ model number

You don't need to memorize TOTO's codes, but a few patterns show up across the spec sheets and our catalogue. They help you check you are comparing like with like:

Example: MW7764736CEFGA is TOTO's Drake (776) WASHLET+ set with the S7A seat (4736), 1.28 GPF, Universal Height (F), with auto flush (A). TOTO's spec sheet confirms it contains the C776CEFGT40 bowl, the ST776EA tank, the SW4736AT40 seat and the THU857 auto flush kit.

What is different, and what isn't

The wash itself: identical

The "+" doesn't add cleansing features. TOTO's WASHLET+ set spec sheets point you to the seat's own spec sheet for features ("See SW4736AT40 Specification Sheet for details on included WASHLET"). A Drake WASHLET+ S7A washes exactly like an S7A seat on any other toilet. What you get depends on which seat is in the set: S2, S5, S7 or S7A. If you are unsure which seat level you need, our S2 vs S5 vs S7 vs S7A guide compares them feature by feature with TOTO's specs.

The look: the main reason to buy WASHLET+

On a regular WASHLET install, a braided water hose runs from a T-connector on your toilet's shut-off valve up to the side of the seat, and the power cord runs to the wall. It works perfectly well, but it looks like an add-on. On a WASHLET+ toilet, both pass through the toilet itself and stay out of sight, so from the front the toilet and seat look like one piece. In a new ensuite with a skirted toilet such as the Nexus or Aquia IV, this is the difference between "toilet with a bidet seat on it" and something that looks close to an integrated smart toilet.

Cleaning around the toilet

TOTO points out that hidden connections leave fewer places for dust and debris to collect. That matters most on a skirted toilet, where the smooth sides are the whole point. There is no hose to wipe behind and no cord lying on the floor.

Auto flush

Auto flush is an S7/S7A feature, not a WASHLET+ feature. TOTO's S7 and S7A spec sheets say they are "Auto Flush capable with optional auto flush kit when installed on select TOTO toilets only". In practice, the easiest way to get auto flush is a WASHLET+ S7 or S7A set with "A" at the end of the model number. The kit is included in the set. The standalone THU857 Auto Flush Kit ($195.84) works only on elongated TOTO toilets. There is more detail in the auto flush section.

Flexibility later

A regular WASHLET seat can move with you. Take it off, put the original seat back, and install the WASHLET on your next toilet. WASHLET+ is designed as a pair. The seat will still work elsewhere (see below), but the concealed look only works on a T40 toilet. And because the hose and cord run through the toilet, swapping the seat later means sliding it off its base plate and feeding them back out the same hole. That isn't difficult, but it is one extra step.

What you actually pay for the "+"

This is the question most guides skip. They say WASHLET+ is "more expensive" without saying how much. Because we sell the Drake toilet, the WASHLET seats and the Drake WASHLET+ sets separately, we can compare like for like. Here are three Drake setups, each 1.28 GPF, elongated, Universal Height, Cotton:

What this means: on the S5 and S7A, the hidden-hookup version of the Drake costs about $73 more than a regular Drake with the same seat. On a $1,400–$2,500 purchase, that's roughly 3–5%. If you are buying a new toilet anyway and want a bidet seat on it, WASHLET+ is a small premium for a noticeably cleaner result. The S2 is the exception. Its standalone price is low enough right now that a regular Drake plus an S2 seat saves about $243.

On the one-piece toilets where we also stock the WASHLET+-ready toilet on its own, buying the set is effectively the same price as buying the parts:

So the set is the simplest way to buy: one order and one box set, with the correct seat, bowl and (on "A" models) auto flush kit guaranteed to match. Buying the parts separately makes sense when you want to stage the purchase, for example the toilet now and the seat later. We cover that next.

Shop Drake WASHLET+ S5 – $1,448 Shop Drake WASHLET+ S7A – from $2,459 Shop UltraMax WASHLET+ S7A – $2,761

TOTO WASHLET and WASHLET+ prices in Canada

Every price below is from plumbingmarket.ca on September 25, 2026, in Canadian dollars, Cotton (white). "From" means the lower price is the version without auto flush.

Looking for a different toilet style? We carry WASHLET+ sets on many more TOTO toilets (Guinevere, Legato, Aimes, Connelly, Soirée, Redington, Aurora, Glaston and wall-hung AP/EP models). Browse the TOTO toilets collection, or see all TOTO WASHLET bidet seats.

The WASHLET+ sets we recommend

TOTO Drake WASHLET+: best value

The Drake is TOTO's workhorse two-piece toilet, and the Drake WASHLET+ is where most of our customers land. TOTO's spec sheet for the Drake WASHLET+ S7A lists a 1.28 GPF (4.8 LPF) TORNADO FLUSH system, CEFIONTECT glaze, Universal Height, an elongated bowl and a 12-inch rough-in. You can pick the seat level: S2 ($1,253), S5 ($1,448) or S7A (from $2,459). If you live in an older home with a 10-inch rough-in, we also stock the Drake WASHLET+ S7 in a 10-inch rough-in version (from $2,329).

Choose the Drake WASHLET+ if: you want hidden hookups at the lowest premium, you are fine with a traditional two-piece shape and an exposed trapway, and you want the widest choice of seat levels.

Shop Drake WASHLET+ S5 – $1,448 Shop Drake WASHLET+ S7A – from $2,459

TOTO Aquia IV WASHLET+: best dual flush

The Aquia IV is the choice if you want lower water use and a sleeker, fully skirted look. TOTO's spec sheet for the Aquia IV WASHLET+ S7A lists DYNAMAX TORNADO FLUSH, a dual flush of 1.28 GPF / 0.9 GPF (4.8 / 3.4 LPF), CEFIONTECT glaze, a completely skirted design, Universal Height, a chrome push-button and a 12-inch rough-in. 10-inch and 14-inch options are available with TOTO's Unifit adapters (TSU48.10 / TSU48.14). The set also lists two Aquia-specific parts: the THU855 auto flush kit (on the auto flush version) and the 9AU321-A WASHLET adaptor.

Prices: Aquia IV WASHLET+ S5 $1,959; Aquia IV WASHLET+ S7A from $2,970 ($3,160 with auto flush).

Choose the Aquia IV WASHLET+ if: you want dual flush, easy-to-clean skirted sides and a more modern look than the Drake.

Shop Aquia IV WASHLET+ S5 – $1,959 Shop Aquia IV WASHLET+ S7A – from $2,970

TOTO Nexus WASHLET+: best premium one-piece

For a primary ensuite where the toilet is on show, the Nexus one-piece with the S7A is our premium pick. TOTO's WASHLET+ comparison chart lists the Nexus WASHLET+ S7A with CEFIONTECT, TORNADO FLUSH, Universal Height and a skirted trapway. The S7A adds EWATER+ cleaning of the wand and bowl, a touchless auto open/close lid and five-level controls. Nexus WASHLET+ S7A is from $3,503 ($3,692 with auto flush). If you don't need the S7A's automation, the Nexus WASHLET+ S5 is $2,492.

Choose the Nexus WASHLET+ if: you want a one-piece, skirted toilet that looks integrated, and you are willing to pay for it.

Shop Nexus WASHLET+ S7A – from $3,503 Shop Nexus WASHLET+ S5 – $2,492

TOTO UltraMax WASHLET+: lowest-cost one-piece

If you want a one-piece toilet without Nexus pricing, the UltraMax is the value one-piece. TOTO's spec sheet for the UltraMax WASHLET+ S7 describes a 1.28 GPF TORNADO FLUSH one-piece with CEFIONTECT glaze, Universal Height and a 12-inch rough-in, built on the CST608CEFGAT40 toilet. UltraMax WASHLET+ S5 is $1,561, and the UltraMax WASHLET+ S7A with auto flush is $2,761.

Shop UltraMax WASHLET+ S5 – $1,561 Shop UltraMax WASHLET+ S7A – $2,761

Build your own WASHLET+: T40 toilet now, seat later

Two details in TOTO's documents make staged buying possible:

1. The elongated S7 and S7A seats we sell in Cotton are the WASHLET+ versions. Our S7 Contemporary is SW4726AT40 and our S7A Contemporary and Classic are SW4736AT40 and SW4734AT40. These are the same seats TOTO lists inside the Drake, Aquia IV, Nexus and UltraMax WASHLET+ S7/S7A sets.
2. Those AT40 seats also work on regular toilets. TOTO's S7A spec sheet says the seat is "compatible with TOTO Washlet+ and Non-Washlet+ toilets, as well as most models from other manufacturers". Buy one for your current toilet today, and it can go on a T40 toilet with hidden hookups when you renovate.

Going the other way works too. Buy a WASHLET+-ready toilet now, such as the UltraMax one-piece T40 ($607) or the Nexus one-piece T40 ($1,538), and top it with the TOTO SS124 SoftClose seat for WASHLET+ toilets (from $109.99) until you are ready for a bidet seat. When you add an S7 or S7A (AT40) later, the hookup is hidden. Remember to have the GFCI outlet installed during the renovation, even if the WASHLET comes later.

One caution: the S2 and S5 seats we sell on their own are the standard versions (SW3346 and SW3446), not T40. TOTO's spec sheets say they fit WASHLET+ toilets, but TOTO's standard WASHLET installation guide warns that routing a standard seat's hose and cord through the WASHLET+ hole "may result in damage to the Washlet and water leakage." For hidden hookups with an S2 or S5, buy the WASHLET+ set.

Shop WASHLET S7A (AT40) – $1,966 Shop UltraMax T40 toilet – $607 Shop SS124 seat – from $109.99

When a regular WASHLET is the better buy

• You like your current toilet. A WASHLET is a simple seat swap. Replacing a toilet to get WASHLET+ means removal, disposal and resetting the new toilet on a new wax ring. Check that your toilet fits first with our TOTO WASHLET compatibility guide.
• You have a round bowl. Every WASHLET+ set we carry is elongated. Round WASHLET seats such as the S5 Round ($955) fit round-front bowls.
• Your toilet isn't a TOTO. TOTO's spec sheets say the S-series seats fit most elongated (or round) toilets from other manufacturers. Only the concealed routing is TOTO-to-TOTO.
• You rent, or you may move. A seat comes with you. A toilet usually doesn't.
• Budget is the priority. The S2 ($590) gives you the core TOTO wash (instantaneous warm water, EWATER+ wand cleaning, PREMIST, heated seat, dryer) for far less than any WASHLET+ set.

Shop WASHLET S5 – $955 Shop WASHLET S2 – $590 Shop S5 Round – $955

Who should buy which?

Installation: how WASHLET and WASHLET+ differ

TOTO describes WASHLET installation as a do-it-yourself job and publishes the same steps for both types. Per TOTO's installation instructions, you need an adjustable wrench, a Phillips screwdriver and a ground-fault 120-volt outlet within three feet of the toilet. The sequence:

1. Close the toilet's shut-off valve and flush to empty the tank.
2. Disconnect the toilet supply line and attach the supplied T-connector to the shut-off valve. Brass T-connectors are gently tightened with a wrench; plastic ones are finger-tight only.
3. Reconnect the toilet supply line to the bottom of the T-connector (TOTO includes an extension adapter if you need one).
4. Remove the old seat and clean the mounting area.
5. The one step that differs: with a regular WASHLET, rest the cord and hose outside the bowl. With WASHLET+, feed them into the hole on the far left of the mounting surface, between the seat and the tank.
6. Mount the base plate, slide the seat on until it clicks, and connect the seat's hose to the side outlet of the T-connector. No tools on that nut, and no kinks.
7. Open the water, plug into the GFCI outlet, set up the remote and test.

For a WASHLET+ set, the toilet itself also has to be installed: floor flange, wax ring, bolts, tank-to-bowl assembly on two-piece models, and levelling. Many homeowners handle that themselves, but if you are not comfortable setting a toilet, hire a plumber for the toilet and do the seat yourself. On auto flush sets, TOTO lists the auto flush kit as its own component (THU857 or THU855), and it is installed along with the toilet.

Once it's in, see our guide to cleaning a TOTO WASHLET to keep the wand and filter in shape.

Electrical requirements: GFCI outlet and cord length

Power is the part that trips up most renovations, and it matters more with WASHLET+ because the outlet location is fixed by where the cord comes out. Here is what TOTO's documents say:

Planning tip for WASHLET+: the cord is hidden behind the toilet, not at the side of the seat. Before the drywall goes up, look at the spec sheet drawing for your exact model with your electrician. TOTO shows the outlet height (12 inches above the floor on the Drake and Aquia IV WASHLET+ sets), and the cord is only about four feet long, so the outlet has to be close. Plan an outlet even if the bidet seat is a "maybe". It is the cheapest time to add one.

In Canada: adding a new outlet or circuit is electrical work under your provincial code. In Ontario, that work needs a permit (notification of work) with the Electrical Safety Authority, and we recommend a licensed electrical contractor. Don't run a WASHLET from an extension cord to a hallway outlet. TOTO's guide prohibits it, and TOTO's S7/S7A warranty excludes damage from a loose or faulty outlet or from anything other than a 120 V, 60 Hz GFI socket.

Water supply requirements

• Pressure: the WASHLET seats need a minimum of 7.25 PSI (flowing) and a maximum of 108.75 PSI (static), per TOTO's spec sheets. TOTO's WASHLET+ toilet spec sheets list a minimum of 8 PSI (flowing) for the toilet. TOTO's warranty notes that product codes allow a maximum of 80 PSI, so check your local code. If your home's pressure is high, a pressure-reducing valve protects the toilet and the seat.
• Temperature: the installation guide specifies a water supply temperature of 32–95 °F (0–35 °C) and an ambient temperature of 32–104 °F (0–40 °C). If the bathroom is unheated, such as a cottage closed for winter, drain the unit. TOTO warns that frozen water can crack the unit and pipes.
• Potable water only: TOTO's spec sheets say not to use recycled water.
• Use the supplied parts: the installation guide says not to use water supply hoses or junction valves other than the ones supplied.
• Shut-off valve: the T-connector attaches at your existing toilet shut-off. The Aquia IV WASHLET+ drawing notes a maximum protrusion of 3-1/8" with the shut-off valve, which is worth knowing if your valve sticks far out of the wall.

Auto flush kits and adaptors

Simplest route to auto flush: buy the "with auto flush" version of a WASHLET+ S7 or S7A set. On the Drake WASHLET+ S7A, that adds $190 ($2,459 → $2,649), slightly less than buying the THU857 on its own. If you are adding a standalone S7A to an existing elongated TOTO toilet, check that your toilet is supported before ordering the THU857. Remember it works only on elongated TOTO toilets.

Rough-in and sizing for Canadian homes

Measure from the finished wall (not the baseboard) to the centre of the toilet flange bolts. Most homes are 12 inches, and TOTO's spec sheets for the Drake, Aquia IV and UltraMax WASHLET+ sets list a 12-inch rough-in. Older homes in Toronto and other established neighbourhoods sometimes have 10 inches, and occasionally 14.

• 10-inch rough-in: the Drake WASHLET+ S7 10" rough-in is built for it. The Aquia IV can use TOTO's TSU48.10 Unifit adapter.
• 14-inch rough-in: the Aquia IV can use TOTO's TSU48.14 Unifit adapter.
• Room depth: a WASHLET+ set takes up the same floor space as the toilet with the seat fitted. Check the dimension drawing on TOTO's spec sheet for your exact model if space in front of the toilet is tight.

Warranty: what TOTO's documents say

• WASHLET S7 and S7A: TOTO publishes a two-year limited warranty for these seats. The S7A spec sheet lists "Two Year Limited (Residential), One Year Limited (Commercial)".
• Other WASHLET models (S2, S5) and select vitreous china: TOTO's one-year limited warranty. The S2 and S5 spec sheets list "One Year Limited Warranty".
• WASHLET+ sets: TOTO's WASHLET+ set spec sheets (Drake, Aquia IV) list a "One Year Limited Warranty".
• What TOTO excludes (from its published terms): damage from improper installation, sediment or foreign matter in the water, electrical surges or lightning, abrasive or chlorine-based cleaners, and normal wear. TOTO also states it is not responsible for removal and reinstallation costs.
• Proof of purchase is required. Keep your receipt. TOTO encourages product registration, although failing to register does not reduce your warranty rights.

Two practical takeaways: use a surge protector (TOTO recommends one, and surges are excluded), and don't clean the seat or bowl with bleach or abrasive cleaners.

Our honest recommendation

If you are replacing the toilet, buy WASHLET+. On the Drake, hidden hookups cost about $73 more than the same toilet and seat bought separately. For that you get a cleaner-looking bathroom that is easier to clean, with a seat and bowl that are guaranteed to match. The Drake WASHLET+ S5 ($1,448) is the sweet spot for most homes. Step up to the Aquia IV for dual flush or the Nexus for a premium one-piece look.

If your toilet is staying, buy a regular WASHLET. The S5 ($955) is our first recommendation. Choose the S7A (AT40) if you want its automation, plus a seat that can move to a WASHLET+ toilet later with hidden hookups.

Don't pay for the "+" expecting a better wash. TOTO's specs are clear that the seat features are the same. WASHLET+ is about the look, the cleaning and the fit. Whatever you choose, plan the GFCI outlet before the walls are closed.

Questions about fit, rough-in or which set suits your bathroom? Call our Vaughan showroom at 289-236-2378 or email sales@plumbingmarket.ca.

Related: TOTO WASHLET S2 vs S5 vs S7 vs S7A: which to buy · Which TOTO toilets are WASHLET compatible? · All TOTO WASHLET bidet seats · TOTO toilets · Smart toilets

FAQ

What is the difference between TOTO WASHLET and WASHLET+?

A WASHLET is a bidet seat you add to a toilet you already have. Its water hose and power cord stay visible beside the toilet. WASHLET+ pairs a WASHLET+ seat with a WASHLET+-ready TOTO toilet ("T40" in the model number), and the hose and cord run through a hole in the toilet so nothing shows. TOTO's spec sheets list the same cleansing features either way. The difference is the concealed hookup.

Is TOTO WASHLET+ worth it?

If you are replacing the toilet anyway, usually yes. At Plumbing Market prices on September 25, 2026, the Drake WASHLET+ S5 is $1,448, only $73.01 more than buying the same Drake toilet ($419.99) and an S5 seat ($955) separately, and you get hidden hookups. If you are keeping your current toilet, a regular WASHLET seat is the better buy.

Can I put a regular WASHLET on a WASHLET+ toilet?

Yes. TOTO's spec sheets for the S2 and S5 say they are compatible with TOTO WASHLET+ and non-WASHLET+ toilets. The hookup just won't be hidden: TOTO's standard WASHLET installation guide warns against routing a standard seat's hose and cord through the WASHLET+ hole. To hide the connections you need a WASHLET+ (T40/AT40) seat.

Can a WASHLET+ seat go on a regular toilet?

TOTO's spec sheet for the elongated S7A (SW4736AT40 and SW4734AT40) says it is compatible with TOTO WASHLET+ and non-WASHLET+ toilets, as well as most models from other manufacturers. On a regular toilet the hose and cord are simply visible, like any WASHLET. The elongated S7 and S7A seats we sell in Cotton are these AT40 versions.

What does T40 mean on a TOTO toilet?

In TOTO model numbers, T40 marks WASHLET+ parts. On a toilet (for example the UltraMax CST608CEFGAT40 or the Drake bowl C776CEFGT40 used in the Drake WASHLET+ S7A set) it means the bowl is made for the concealed WASHLET+ connection. On a seat (for example SW4736AT40) it means the WASHLET+ version of that seat.

What outlet do I need for a TOTO WASHLET+ toilet?

TOTO's WASHLET+ spec sheets show a GFCI outlet of 120 V, 15 A, located 12 inches above the finished floor, and note that the WASHLET power cord is 4 feet long with three prongs. TOTO's installation guide calls for a grounded (3-prong) outlet on a GFCI circuit rated 15 A or more, within three feet of the toilet. Don't put the outlet directly below the water supply.

Does TOTO WASHLET+ include auto flush?

Only on the S7 and S7A sets, and only if you buy the auto flush version (the model number ends in "A") or add the kit. TOTO's spec sheets list the THU857 Auto Flush Kit in the Drake and UltraMax WASHLET+ S7/S7A sets and the THU855 kit in the Aquia IV WASHLET+ S7A set. The THU857 works only on elongated TOTO toilets. TOTO's S2 and S5 spec sheets don't list auto flush capability.

Is there a round WASHLET+ toilet?

Every WASHLET+ set we carry is elongated. If you have a round-front bowl and want to keep it, choose a round WASHLET seat such as the S5 Round ($955) or the S7A Round.

What warranty does a TOTO WASHLET+ come with?

According to TOTO's published warranties, the WASHLET S7 and S7A have a two-year limited warranty, while other WASHLET models and select vitreous china have a one-year limited warranty. TOTO's WASHLET+ set spec sheets list a one-year limited warranty for the set, and the S7A seat spec sheet lists two years (residential). Keep your receipt: TOTO requires proof of purchase.

Where can I buy a TOTO WASHLET+ toilet in Canada?

Plumbing Market in Vaughan, Ontario carries TOTO WASHLET+ sets including the Drake, Aquia IV, Nexus and UltraMax, plus the WASHLET+-ready toilets and AT40 seats on their own. Prices are in Canadian dollars.