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Specs are compiled from manufacturer listings and verified buyer reviews and can change over time — please confirm the key details on the product page before buying.
You get hands-free washing, drying, and flushing in one piece with a built-in bidet toilet. But this is a bigger decision than bolting a seat onto your old bowl. You are choosing a permanent fixture with a pump (moves the water), a heater, a dryer, and sensors on it. The real question is which unit fits your rough-in, your outlet, and your daily habits. A bidet seat keeps your existing bowl and adds the same warm-water clean for far less disruption.
This guide is built by comparing the manufacturers’ published specifications and the patterns across verified customer reviews, so you get each pick’s real strengths and trade-offs instead of marketing spin.
Below you will find eleven models compared on flushing power, seat height, dryer type, and water heating — everything that separates a comfortable daily fixture from one you regret. Each pick is sorted by what it actually solves, so you can find the right one for a small guest bath or a full remodel when you browse toilets with built in bidet.
Top Picks
How To Choose The Best Toilets With Built in Bidet
A built-in bidet toilet is a single porcelain unit with an electric seat, a water heater, and a wash wand already mounted inside it. That means three things have to line up before you buy: the plumbing distance behind the wall, a working power outlet near the floor, and the seat height you want to sit down to every day. Nail those three and the remaining choices are comfort features.
Start with the rough-in measurement, not the feature list
The rough-in is the distance from the finished back wall to the center of the floor drain — usually 12 inches in U.S. homes, and the EPLO U8MAX is explicitly built for a 12-inch rough-in. Measure yours before anything else, because a toilet that does not line up with the drain means moving the flange, which is a plumber’s job. Most one-piece bidet toilets also need a dedicated outlet within reach of the cord.
Decide if you want the lid to open itself
Auto open and close is the feature people either love or could live without. It is genuinely handy when your hands are full, and it matters for anyone with arthritis or limited grip. But it needs space — sensors can fire when someone walks past a narrow bathroom. Several models let you turn the sensor off or shorten its range, and one CANEST model deliberately leaves auto-lid out to keep the price and complexity down.
Understand what MaP flush ratings actually mean
The MaP score is a lab test of how many grams of solid waste a toilet clears in one flush, and 1000 grams is the top of that scale. A tank plus a booster pump is what gets a one-piece bidet toilet to that number, since there is no traditional gravity tank behind it. If your home has weak water pressure, a model with a built-in tank and pump is the safer bet over a tankless design.
Match the dryer and foam shield to your habits
A warm air dryer cuts how often you reach for paper. A moving dryer that travels back and forth dries more evenly than a fixed nozzle, and adjustable speed helps. A foam shield lays a layer of foam on the water before use to stop splashing and keep waste from sticking to the bowl, which cuts how often you scrub. Neither is essential, but both change daily cleanup noticeably.
Side-by-Side Comparison
| Model | Best For | Type | Seat Height | Flush / Wash Note | Amazon |
|---|---|---|---|---|---|
| WOODBRIDGE B0930S★ Best Overall | Full-feature one-piece | One-piece toilet | 17-3/8″ (ADA) | 1000g MaP, foam shield | Amazon |
| TOTO WASHLET S5 (SW3446#01)Smart Seat Upgrade | Keeping your existing bowl | Bidet seat | — | Instant warm water, PREMIST | Amazon |
| CANEST TC-100GECore Value | Core features, manual lid | One-piece toilet | ADA comfort height | 1000g MaP, tank + backup flush | Amazon |
| EPLO E16 | Guest bath simplicity | One-piece toilet | — | 1.6/1.1 GPF, foam shield | Amazon |
| Kohler PureWash E880 | Seat upgrade, small footprint | Bidet seat | — | 3D wash, stainless wand | Amazon |
| WOODBRIDGE GT090 | Adjustable sensor + fragrance | One-piece toilet | 17.4″ (ADA) | Foam shield, pulse wash | Amazon |
| CANEST FC-001 | Auto lid + foam + quiet flush | One-piece toilet | 17.4″ | 1000g MaP dual flush | Amazon |
| HOROW T38 | Low water pressure homes | One-piece toilet | — | Tank + pump, pre-wet | Amazon |
| EPLO U8MAX | Moving dryer + 12″ rough-in | One-piece toilet | 17.41″ (ADA) | 1000g MaP, foam shield | Amazon |
| TOTO WASHLET+ S7A | Continuous warm water seat | Bidet seat | — | EWATER+, auto open/close lid | Amazon |
| Casta Diva K030PRO | Quiet flush + weight sensor | One-piece toilet | — | 1000g MaP, 45dB flush | Amazon |
Detailed Reviews
1. WOODBRIDGE B0930S Smart Toilet
Our pick — 4.5+★ from 250+ verified ratings; the strongest balance of quality and price.
A full-feature one-piece that flushes to the top of the scale and opens itself as you walk in.
The number worth starting with is the 1000g MaP score — 1000 grams is the highest result on that flush test, which means this toilet clears a heavy load in one go. That is backed by a built-in tank, so the flush does not depend on your home’s water pressure. Dual flush lets you pick a 1.6 GPF full flush or a 1.1 GPF half flush, so light trips use less water, and a power-off flush on the side button keeps you running during an outage.
The lid opens as you approach and closes and flushes after you leave, and a foot sensor lets you lift the seat, drop the lid, or flush without touching anything. The seat sits at 17-3/8 inches floor to rim, which is ADA-compliant chair height — tall enough that your knees do not fold up on you. The wash side offers front, rear, and oscillating spray with adjustable flow, spray position, and water temperature, and the dryer travels back and forth at low, medium, or high speed instead of blowing from one spot.
A foam shield lays a soft layer on the water, which cuts splashing, odor, stains, and flush noise. A deodorizing system also breaks down odor molecules. Build quality wins people over most: the porcelain and finish earn the bulk of the praise on the listing. Buyers report: “After eight months, this owner reports an easy install and performance that exceeds its price, though it is not luxury-grade.” At 112 pounds and 27.63 inches deep, it is a substantial piece, so measure your spot first. The remote symbols are low-contrast enough to be hard to read in dim light.
What earns it the top slot
- 1000g MaP rating plus a built-in tank means a strong flush even on weak home pressure
- 17-3/8″ ADA seat height eases sitting and standing for aching knees
- Moving dryer at three speeds cuts how much paper you buy
- Side-button power-off flush keeps the toilet usable in a blackout
Where it asks something of you
- At 112 pounds and 27.63″ deep it is a heavy, roomy install — plan for two people
- Remote labels are low-contrast, so a night light in the bathroom helps
- Tank refill is on the slow side between flushes
Go for this if: you want the complete hands-free package — auto lid, foot-sensor flush, foam, and a dryer — in one porcelain unit.
Measure first: the 27.63-inch depth and 112-pound body need a confirmed footprint and a nearby outlet before delivery day.
2. TOTO WASHLET S5 Electronic Bidet Toilet Seat (SW3446#01)
The seat that turns the toilet you already own into a warm-water wash station.
If a full fixture replacement is not in the plan — or the budget — this is the shortcut. It weighs 15.4 pounds and measures 21 inches long by 15.06 inches wide, so it installs on an elongated bowl without tearing out porcelain. Compare that to the WOODBRIDGE above at 112 pounds and 27.63 inches: this is a seat swap, not a demolition job. It delivers instant and continuous warm water for as long as you want it, with a pulsating and oscillating stream, so the temperature never runs cold mid-clean.
The comfort layer is real: a SoftClose heated seat warms the full seat surface, a built-in nightlight glows softly, an air deodorizer filters odors, and an adjustable warm air dryer finishes the job. PREMIST mists the bowl with incoming water before each use so waste does not stick, and EWATER self-cleans the wand inside and out. A remote stores four user memory settings, which means each person in the house gets their own pressure and temperature without fiddling.
Installation is what earns the most goodwill here — it is the top-praised aspect on the listing — and the fit lands as mixed, since it suits elongated bowls but not every shape. The catch is the outlet: the dryer and heater need power at the wall, and running a new circuit is a real cost. As owners mention: “One owner credits the S5 with cutting bowl-cleaning frequency from about 60% to 5-10% on a 1.28 gal/flush toilet.”
The honest trade-off: you keep your existing bowl and skip the plumber’s tear-out, but you must have a live outlet near the toilet — without one, the dryer and heated seat simply cannot run.
What it does not do: it is a seat, not a fixture, so auto flush and the one-piece look are not part of the package.
Smart buy when: your current toilet flushes fine and you only want the warm seat, wash, and drying.
Think twice if: there is no outlet within cord reach — that wiring changes the whole equation.
3. CANEST TC-100GE Smart Toilet with Bidet Built In
All the washing, warming, and drying you need — you just lift the lid yourself.
CANEST is upfront about the trade: the TC-100GE leaves out auto lid opening and the foot sensor that lifts the seat and lid. What you keep is the part that matters daily — a built-in bidet with multiple wash modes, a heated seat, warm-water cleansing, a warm-air dryer, night lighting, and automatic deodorization. It flushes on a 1000g MaP system with a built-in water tank, and a backup flush keeps it working through a power cut. The elongated bowl sits at ADA comfort height with a soft-close lid.
At 95 pounds and 26.5 inches deep it is lighter and shorter than the 112-pound WOODBRIDGE at the top, which makes it easier to set in a smaller bathroom. Auto flush triggers as you stand up, so nobody has to reach back for a handle. The digital display makes the controls legible at a glance, and the temperature hold on the seat and water stays steady on cold mornings.
The build and finish draw steady praise, and the warm drying is the feature people keep coming back to. Where it gets honest: this is a mid-priced smart toilet, so buy it for the wash-and-dry core, not for the concierge lid. Leak reports exist on a small number of units, which is the kind of thing professional installation and a careful check at setup help you catch early. Expect a longer install and a bit of a learning curve on the remote.
The case for it: every core bidet comfort feature — heated seat, warm wash, warm dryer, deodorizer, 1000g flush — without paying for motorized lid hardware.
The caveat: no hands-free lid, so this is the wrong pick if touch-free is the whole point for you.
Fits best in: a main or guest bath where you want the warm-water experience and do not mind lifting the lid.
Look elsewhere if: a fully hands-free open, close, and flush is non-negotiable.
4. EPLO Smart Toilet E16 One Piece Bidet with Foam Shield
No self-opening lid on purpose — simpler for visitors who do not want to learn a remote.
Here is a smart toilet with a little restraint, and that is the appeal. The E16 skips the auto-open lid, which owners of guest bathrooms say is a plus: nobody has to figure out a sensor, and the bowl behaves like a normal toilet until you want the extras. A built-in tank plus a booster pump drives the flush, and the foam shield lays a protective layer before use to stop splash and keep waste from clinging to the bowl. Dual flush runs 1.6 GPF full or 1.1 GPF half, with an ECO mode for lower power draw.
At 83 pounds and 27.2 inches deep it is the lightest one-piece on this list, which makes the two-person lift on install more manageable. The bidet side covers rear and feminine wash with adjustable water temperature, pressure, and nozzle position, plus oscillating wash and a self-cleaning nozzle. Add a heated seat, warm air dryer, deodorizing, and a night light, and you have a complete daily fixture. The foot sensor flushes without bending, and a power-outage flush keeps it working when the lights go out.
The build is the thing buyers praise most, and the warm seat and bidet get steady mentions. The honest caveat is longevity: the flush mechanism has drawn mixed feedback over time, and the 1-year warranty is shorter than you would like on a fixture this permanent. The dryer earns genuine praise for actually drying rather than just blowing warm air around.
Why it works here: no auto lid means fewer things to break and nothing for guests to puzzle over, and the foam shield keeps the bowl cleaner between visits.
The catch: a 1-year warranty on a plumbed-in fixture means you want a careful install and a watchful eye on the flush in year one.
Best for: guest baths and second bathrooms where simplicity beats gadgetry.
Weigh this: if you want a long warranty and proven long-haul durability, look to the higher-rated picks further down this list.
5. Kohler PureWash E880 Elongated Bidet Toilet Seat with Remote
A seat-only upgrade that sprays in two directions at once to cover more ground.
You get a wider clean in one pass with 3D wash: the wand moves back and forth while also shifting side to side, instead of a single fixed stream. That is what lifts this Kohler above a basic bidet seat. A stainless steel wand self-cleans before and after every use. You also get three spray modes — stream, mist, and air mist — plus a spa mode that adjusts water temperature automatically.
It weighs 12.5 pounds and measures 21.26 inches long by 15.79 inches wide, so it bolts onto an elongated bowl the way the TOTO seat above does. A handheld remote carries two programmable presets, and three-level adjustments let you dial nozzle position, water temperature, and pressure. A Boost Spray setting jumps the rear wash straight to its strongest setting, and child mode softens the wash for smaller users. The lid opens and closes on motion so nobody has to touch it.
The install story is straightforward, and the auto-open lid gets used more than people expect once it is in. The one real sizing question is depth: the seat can sit slightly proud at the front of the bowl, which is cosmetic rather than functional. Larger frames may want to confirm the fit before committing, since the seat shape is built around an elongated oval.
Standout spec: the 3D wash motion is the differentiator — it cleans a wider band than a single fixed nozzle, which is why long-time bidet users single it out.
Worth knowing: this is a seat, so your existing toilet’s flush and shape stay exactly as they are.
Reach for it if: you want a broader, more thorough wash from a seat that fits your current elongated toilet.
Check the fit if: your bowl is round rather than elongated, or you are a larger frame wanting a roomier seat.
6. WOODBRIDGE GT090 Bidet Smart Toilet
The one that lets you tune how far its sensors reach, so a small bathroom stays calm.
Auto-open lids have a problem in tight bathrooms: they fire every time someone walks past. This Woodbridge answers that by letting you set the sensor range to 20, 40, 60, 80, or 100 centimeters — meaning 8 to 39 inches of reach — or switch the sensor off entirely. In a narrow powder room that flexibility is worth real money, because the lid stops greeting you every time you reach for a towel.
The lid opens as you approach and closes and flushes after you leave, with a foot sensor for touch-free seat and lid control. The seat sits at 17.4 inches, an ADA-comfort height. A built-in fragrance tablet releases a steady scent, the foam shield cuts splash and stain, and a curved stainless steel nozzle self-cleans before and after use. The pulse wash alternates water pressure rhythmically for a massaging clean, and rear and front moving wash run with adjustable temperature and pressure shown on a digital display.
At 77 pounds it is far lighter than the 112-pound B0930S above, and it is 27 inches deep by 15.4 inches wide — a leaner footprint for a smaller room. Quality is what buyers praise most here, and the feature set comes second. The honest gap: the auto-flush behavior and dryer strength are the two things people wish were stronger, and the backup battery box takes 10 AA batteries that are not included.
Where it wins
- Adjustable sensor range (20–100 cm) or off — a real fix for cramped bathrooms
- 77 pounds is manageable for a two-person install versus heavier one-piece units
- Built-in fragrance plus foam shield keeps the room and bowl fresher
- 17.4″ ADA height and pulse wash for daily comfort
The fair caveats
- Backup flush needs 10 AA batteries you supply separately
- Dryer and auto-flush strength draw the most wish-list comments
- Fragrance is a matter of taste — some will want it off
Pick this when: your bathroom is snug and you want the lid to behave rather than react to every passer-by.
Skip the extra if: you are set on a scent-free bathroom or want the strongest dryer available.
7. CANEST FC-001 Smart Bidet Toilet with Auto Open/Close
A one-piece with the full hands-free set — and a lid that closes itself before the flush.
The detail that separates this CANEST from its manual-lid sibling is what happens when you stand up: the lid closes on its own before the flush, so the bowl is never left open. Proximity and foot sensors open the lid, lift the seat, and trigger the flush without hand contact, and a spare battery box keeps the flush working in an outage. Flushing is a 1000g MaP dual-flush system at 1.1 or 1.6 GPF with siphonic jet technology, which is a fancy way of saying the water is pushed through a jet channel rather than dumped from a tank above.
At 99 pounds and 27.2 inches deep by 16.2 inches wide it fits a standard footprint. The bidet runs front and rear wash through a retractable self-cleaning nozzle that moves forward and back, with adjustable water temperature and air speed. The heated seat holds between 86°F and 100°F, which is the difference between dreading a winter trip and not thinking about it. Activated carbon deodorizers absorb odor after use, a soft night light shows you the seat in the dark, and the LED display makes settings easy for older family members to dial in with the remote.
Build quality is the strongest signal across the listing, with functionality close behind. Owners specifically call out the auto-close-before-flush habit and the heated seat as the parts they would not give up. It is a straightforward install that behaves as advertised once set up; expect the usual learning curve on the remote.
what separates it: the lid closes before the flush, which keeps the bowl covered and the bathroom looking tidy. It is a small detail you notice every single day.
One thing to plan: like any one-piece smart toilet it needs an outlet nearby and a measured rough-in before it arrives.
Good match for: households that want the full auto experience and a lid that tidies itself.
Skip if: you prefer a manual lid you control by hand — the TC-100GE above is the same family without the motors.
8. HOROW T38 Smart Toilet with Bidet & Auto Open/Close Lid
Built for homes where the water pressure is the enemy — a tank and pump do the pushing.
If your house has weak pressure, a tankless bidet toilet is a gamble. The T38 pairs a built-in water tank with an electric pump so the flush does not rely on your plumbing to shove water through. That is the whole reason this one exists, and it also keeps the one-piece profile slim since there is no bulky tank hanging on the back. The bowl has no corners or crevices on the outside, which makes wiping it down a quick job.
The lid senses you coming and opens, then closes gently behind you. A toe-tap lifts the seat, the flush triggers automatically, and the bidet head is removable for cleaning or replacement — a detail that matters more the longer you own it. A soft night light and a colorful digital display cover the nighttime use, and an electronic manual lets you adjust settings, including turning down a lid sensor that is too eager in a small bathroom. At 27.4 inches deep by 15.4 inches wide it keeps a compact footprint.
The design and finish earn strong feedback — the sleek one-piece look reads high-end in a small bathroom. The recurring honest issue is the pump-driven flush on heavy loads: most flushes clear fine, but a small number of customers note clogs on solids. That is the trade-off of a pump over gravity, and it is why this pick suits low-pressure homes specifically. It also has no flush during a power outage unless you add the backup battery.
Where it earns its place: the tank-and-pump combo is built for weak water pressure, and the removable bidet head makes long-term cleaning genuinely easier.
The catch: a pump flush can struggle on heavy loads, and there is no backup flush in an outage without the add-on battery.
Right choice when: your home’s water pressure is weak and a gravity tank on the wall is not an option.
Second-guess it if: power-outage flushing matters to you without buying an extra battery — check the Woodbridge picks first.
9. EPLO U8MAX Smart Toilet Bidet with 1000G MaP & Foam Shield
A dryer that actually moves to where the water went — and a flush that tops the scale.
The dryer here is the star: it travels back and forth with adjustable temperature, wind speed, and position, so it dries the whole area instead of one spot while you shift around to chase the air. That pairs with a 1000g MaP flush score and a built-in tank, plus 1.6 GPF full or 1.1 GPF half flush options. A foam shield lays a protective layer to curb splash and bowl stains, and the 17.41-inch floor-to-seat height meets ADA standards for easier sitting and standing.
It is designed for a standard 12-inch rough-in, which is the measurement from the back wall to the drain center — a useful spec to confirm before you order. The lid opens on approach and closes and flushes when you leave, with a foot sensor for seat, lid, and flush. The bidet covers front, rear, and oscillating wash with adjustable pressure, spray position, and temperature, and four-season temperature sensing auto-adjusts the seat, water, and dryer to the room. Add a night light, deodorization, and a dual LED display and the daily experience is fully covered.
At 116 pounds and 27.63 inches deep it is a solid piece, so plan the install with help. Functionality is the thing buyers praise most here, and value comes in a close second — this is a lot of feature set for the tier. DIY installs finish in about 20 minutes with two people lifting, and all hardware, wax seal, valve, and battery backup are in the box. It is CUPC and EGS listed and meets DOE and CEC requirements.
Why buyers keep it
- Moving dryer with adjustable temperature, speed, and position for real drying
- 1000g MaP flush backed by a built-in tank
- 17.41″ ADA height and a comfortable elongated seat
- 12-inch rough-in compatibility and full install kit included
Weigh before you buy
- 116 pounds needs two people and a measured footprint
- All the smart features mean a remote to learn
- Confirm your 12-inch rough-in — it is not built for other spacings
Strongest for: anyone who wants the dryer to finish the job and a flush that never backs down.
Confirm beforehand: a 12-inch rough-in and a nearby outlet — those two checks decide whether install day goes smoothly.
10. TOTO WASHLET+ S7A Electronic Bidet Toilet Seat
A seat that opens itself and keeps the warm water coming, never running cold mid-clean.
This is the top of the seat-only ladder, and two features earn the position. First, instant and continuous warm water — the stream holds temperature for as long as you need, so there is no cold surprise partway through. Second, AIR-IN WONDER WAVE infuses air into each water droplet, which softens the spray while keeping it effective, with oscillating and pulsating modes on top. The lid opens and closes automatically by sensing approach and departure, so the whole thing stays hands-free.
At 15 pounds it installs like the S5 seat above, and it fits most standard toilets including TOTO WASHLET+ models with a concealed connection. PREMIST mists the bowl before use to stop waste from sticking, and EWATER+ cleans inside and outside the wand before and after each use and helps clean the bowl as you leave. A remote stores four user memory settings, and a nightlight glows softly for dark trips.
The quality and feature set are what draw the most enthusiasm, and the temperature consistency is the detail people notice — the water simply does not waver. The remote gets mixed feelings for how it looks and feels at this tier, and the lid should never be sat or stood on when it is open, so households with young children need a rule. Note that auto flush requires a separately sold kit.
The spec that justifies it: continuous warm water plus EWATER+ wand and bowl cleaning means every wash starts clean and stays warm to the end.
What to know: auto flush is an add-on kit, not built in, and the open lid is not built for weight.
This is your pick if: you want the warmest, most consistent wash and a lid that handles itself, and your toilet is staying.
Budget the add-on: if hands-free flush matters, factor in the separate TOTO auto-flush kit.
11. Casta Diva K030PRO Smart Toilet with Bidet Built In
A flush quiet enough at 45 decibels that the rest of the house keeps sleeping.
Forty-five decibels is roughly the sound of a quiet conversation — soft enough that a nighttime flush will not wake a light sleeper in the next room. That is the headline for the K030PRO, and it backs it with a built-in tank and a 1000G MaP flush that needs no special water pressure. A foam shield creates a thick barrier when you sit, blocking splash, trapping odors, and resisting sticking, so the bowl stays cleaner with less scrubbing.
The sensor seat is the clever part: it triggers the bidet when anyone over 28.66 pounds sits down, so there is no hunting for a specific sensor spot. The lid opens as you approach and closes and flushes when you finish, with an upgraded blue-light foot sensor for seat, lid, and flush. Warm water comes in rear, front, and oscillating massage modes with 0.1-second instant heating, and the nozzle self-cleans before every use. A five-speed heated seat and warm air dryer round out the daily comfort.
Quality and installation both draw strong feedback — this is a well-made unit that goes in without drama. The intelligent temperature adjustment is off by default, so you have to switch it on in the manual for the seat and water to track the room. The foam solution is sold separately on this model and the fill port is tucked away, so keep the manual handy. It weighs 43.55 kg, which is about 96 pounds, so plan the lift.
What stands out: a 45dB flush is genuinely considerate in an apartment or a bedroom-adjacent bath, and the weight-activated seat sensor means the bidet just works.
The follow-up question: the smart temperature feature ships off, and the foam refill is an extra purchase — both easy to fix, neither a reason to skip.
Made for: light sleepers, apartments, and families who flush after dark and do not want the whole home to hear it.
Set it up right: activate the temperature adjustment on first use and buy the foam solution up front so nothing interrupts the routine.
Know the Specs
The MaP score — how strong the flush really is
MaP stands for Maximum Performance, a test that measures how many grams of solid waste a toilet clears in one flush. The scale tops out at 1000 grams, so a 1000g rating means the toilet cleared the maximum load the test uses. A built-in tank and a booster pump are how one-piece bidet toilets reach that number without a gravity tank on the wall. If your home has weak water pressure, this spec is the one to check first.
Water heating — instant versus tank
Instantaneous heating warms water as it flows, so thestream never cools down no matter how long you run it. A tank heater stores a small reservoir of warmed water and refills as it goes. Both work; instant heating tends to hold temperature longer on a long wash, which is why the TOTO seats and the Casta Diva lean on it.
ADA comfort height and the 17-inch rule
ADA comfort height means the rim sits around 17 inches off the floor, roughly the height of a standard chair. That extra couple of inches takes strain off knees and backs, which matters most for older adults, taller users, and anyone recovering from surgery. Models here list 17.4, 17.41, and 17-3/8 inches — all in that same comfortable zone.
Foam shield, pre-mist, and EWATER+ — three ways to fight the bowl
A foam shield drops a layer of foam onto the water before use, which catches splash and stops waste from sticking to porcelain. A pre-mist sprays the bowl with incoming water so waste slides away rather than adhering. EWATER+ is TOTO’s electrolyzed-water cleaning that rinses the wand inside and out and helps clean the bowl on departure. All three reduce how often you scrub.
Rough-in and the outlet — the two numbers that decide install day
Rough-in is the distance from the finished wall to the center of the drain, and 12 inches is the common U.S. measurement — the EPLO U8MAX is built for exactly that. Every electric bidet toilet also needs a grounded outlet within cord reach, since the seat heater, water heater, and dryer all draw power. Measure both before you order and install day becomes a swap instead of a project.
GPF — what full and half flush mean for your water bill
GPF stands for gallons per flush. A dual-flush toilet offers a full flush, usually 1.6 GPF for solids, and a half flush, usually 1.1 GPF for lighter use. Choosing the half flush when you can trims water use without touching performance. An ECO mode on some models also lowers power draw from the heater and dryer.
Common Questions
Do I need a plumber and an electrician to install a toilet with a built-in bidet?
Will a built-in bidet toilet still flush during a power outage?
Is a bidet seat cheaper than a whole new bidet toilet?
How do I know which toilet a bidet seat will fit?
What does a foam shield actually do, and do I have to buy refills?
Why does the seat height matter so much on these toilets?
Do these smart toilets waste a lot of electricity?
Is a moving air dryer worth having, or is toilet paper still needed?
How long should I expect a smart bidet toilet to last?
Can I add auto flush to a bidet seat later?
The Bottom Line
For most homes, the best toilets with built in bidet is the WOODBRIDGE B0930S. It holds the highest score of the full-fixture picks, and it packs a lot into one piece: a 1000g MaP flush (a lab score for how much waste one flush clears), a foam shield, auto open and close, foot-sensor flushing, an ADA seat height (17 to 19 inches, easier to sit down and stand up), and a moving dryer. If you would rather keep the bowl you already own, the TOTO WASHLET S5 adds warm water and a heated seat without the tear-out. For a bathroom where the flush can be heard in the next room, the Casta Diva K030PRO and its 45dB flush (about as loud as a quiet conversation) is the considerate pick. One honest nudge: if you have narrowed it to the EPLO family, the U8MAX is the better-loved of the two on that listing.
How we choose
We do not accept paid placement. Every pick is matched to a real buyer and a real use-case; we do not hands-on test units.
Sources
Specifications: manufacturer listings and product documentation. Review insights: verified customer reviews, as of October 2026. Pricing: not shown on this page (it changes often); check the current price via the retailer link.
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