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Auto Flush Bidets and Toilets

An auto flush bidet toilet senses when you stand and flushes on its own, so you never touch a handle or a button. This collection holds TOTO integrated smart toilets, including the NEOREST range and the WASHLET G5A and G5A Lite, that pair automatic flushing with a built-in bidet wash, a heated seat, and a warm air dryer.

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What Makes a Bidet or Toilet Auto Flush

A toilet is auto flush when a sensor decides you are finished and sends the flush without any input from you. TOTO puts it plainly on its own auto flush announcement: the toilet flushes when the user rises and walks away, and there is no need to wave a hand over a sensor to activate it. Every product in this collection is a complete fixture rather than a seat, which is why the flush can be automated at all — the flush valve, the sensors, and the bidet controls are all part of the same unit and run from one remote. Browse the full range in TOTO NEOREST and TOTO smart toilets.

The flush triggers on exit, not on a hand wave

The seat sensor registers that you have stood up and left, and the flush finishes itself while you are at the sink. TOTO keeps a manual path open on these models: the WASHLET G5A Lite and the wall-hung NEOREST WX1 are both listed with auto flush plus a manual backup for power outages, and TOTO's earlier auto flush WASHLET+ toilets kept their original trip lever. Nothing about automatic flushing takes the manual flush away from you.

What is the difference between a bidet and a washlet?

The difference between a bidet and a WASHLET is that a bidet is any fixture or seat that washes you with water after you use the toilet, while WASHLET is TOTO's own brand name for its bidet seats and integrated bidet toilets. The store's smart toilet guide notes that the WASHLET name has become shorthand for bidet toilets and bidet seats generally. On the fixtures here the WASHLET is built in, so the wash, the dryer, the heated seat, and the flush share a single control system instead of a seat bolted onto someone else's bowl. If you want the same washing functions on the toilet you already own, that is what a TOTO WASHLET seat does; how bidets work covers the mechanics.

The automatic cleaning that runs around the flush

TOTO wraps several cleaning steps around each flush. PREMIST wets the bowl surface before use, and on the NEOREST bowls TOTO states this aids waste elimination approximately 80% better than a dry bowl. EWATER+ electrolyzes water to produce hypochlorous acid, which keeps the wand and the toilet bowl hygienic. TORNADO FLUSH drives the bowl rinse with two nozzles and a hole-free rim, creating a cyclonic action that reduces waste buildup, and the CEFIONTECT glaze is smooth enough to stop particulates from adhering to the ceramic. The NEOREST NX2 adds ACTILIGHT, which pairs TOTO's CLEAN LIGHT technology with a hydrophilic glaze to wash waste and grime off the bowl surface.

How to Choose an Auto Flush Bidet Toilet

The best toilet and bidet combo is the one that matches your bathroom's plumbing first and your feature list second, because the automatic functions are broadly similar across this collection while the installation requirements are not. Four decisions cover it: how the toilet mounts, what it flushes, where the power comes from, and which automatic features you will use every day.

1. Decide between floor-mount and wall-hung

A floor-mount fixture such as the NEOREST NX1, RS, AS or LS, or the WASHLET G5A, bolts to the floor over your existing drain, so it swaps in where your current toilet sits. A wall-hung model such as the NEOREST WX1 or WX2 hangs on an in-wall carrier: the wall has to be opened during installation, and in exchange the floor underneath stays clear and easy to mop. Compare wall-hung toilets with bidets and wall-mounted smart toilets before you commit.

2. Check the flush volume you are getting

Every model here is dual flush, so the smaller volume handles most uses. TOTO rates the NEOREST NX1, NX2, RS, AS and LS at 1.0 / 0.8 GPF, the wall-hung NEOREST WX1 at 1.2 / 0.8 GPF, and the WASHLET G5A and G5A Lite at 1.2 / 1.0 GPF. If flush volume is what you are shopping on, the store sorts the whole catalog that way in 1 GPF toilets and 1.28 GPF toilets.

3. Confirm the outlet before you order

All of these fixtures are electric. The wash, the seat heater, the dryer, the deodorizer, the lid motor and the flush sensor all draw power, and the store's smart toilet guide gives a GFCI outlet near the toilet as the standard requirement. If your toilet alcove has no outlet, put an electrician in the budget alongside the fixture.

4. Pick the automatic features you will actually use

Past the flush itself, the features that change daily use are the heated seat, the warm air dryer, the deodorizer, the night light and the remote's user memory. TOTO lists a warm air dryer with three temperature settings on the G5A Lite and five settings on the NEOREST WX1, an automatic air deodorizer on both, a night light on the WX1, and remotes that store settings for up to four users. Shop by the one you care about: bidets with a dryer, bidets with deodorizers, or bidets with remote control.

What an Auto Flush Bidet Toilet Will Not Do

The downsides of a bidet toilet are structural rather than fixable, so read them before you order:

  • It will not work without electricity. In an outage the wash, dryer, heated seat and sensors stop, and you flush with the manual backup.
  • It will not install like a seat swap. You are replacing the fixture, and a wall-hung model means opening the wall for the carrier.
  • It will not be the cheap way in. The smart toilet guide on this site puts full smart toilets at $1,000 to $5,000 or more, against $80 to $800 for a bidet seat.
  • It will not be fixed with a plunger and a wrench. The same guide notes that electronic components can mean specialized parts or service.
  • It will not move with you. A bidet seat unbolts in minutes; a fixture stays with the bathroom.

If any of those is a dealbreaker, a bidet toilet seat gives you the wash, heated seat and dryer on the toilet you already own, and complete bidet toilets holds the wider range of built-in models.

Frequently Asked Questions about Auto Flush Bidets and Toilets

Is an auto flush bidet toilet a completely hands-free routine?

An auto flush bidet toilet gets you close to a completely hands-free routine: the wash and the warm air dryer replace paper, the lid opens and closes by itself on most models here, and the flush triggers once you stand and walk away. Some people still pat dry with a square or two after the dryer cycle, which is preference rather than necessity. Drying after a bidet covers the options.

Is there a smart toilet that has both a bidet and a dryer?

Yes — every smart toilet in this collection has both a bidet wash and a warm air dryer built into the same fixture. TOTO lists a warm air dryer with three temperature settings on the WASHLET G5A Lite and five settings on the NEOREST WX1, each running after the wash from the same remote. The dryer is the part that makes a paper-free routine practical rather than theoretical.

Is a touchless flush more hygienic than a flush handle?

A touchless flush is more hygienic than a flush handle in one plain way: there is no lever for anyone to touch, so flushing leaves no shared surface behind. The wash side helps too — the water comes from the same fresh supply line that feeds your sink, never from the bowl, and TOTO's EWATER+ produces hypochlorous acid to keep the wand and bowl hygienic between uses.

Can you add auto flush to a toilet you already own?

You can add auto flush to a toilet you already own only in specific cases. TOTO's WASHLET S7A is auto flush capable with an optional auto flush kit when it is installed on select TOTO toilets, and TOTO has sold factory auto flush WASHLET+ toilets including the Aimes, Legato, Nexus, Connelly and Aquia IV. On any other bowl, automatic flushing means replacing the fixture. See TOTO WASHLET seats.

What happens to the auto flush sensor in a power outage?

The auto flush sensor stops in a power outage, so the toilet will not flush on its own until power returns. You flush it manually instead: TOTO lists auto flush with manual backup on the WASHLET G5A Lite and the NEOREST WX1, and its auto flush WASHLET+ toilets keep the original trip lever. The wash, the dryer and the heated seat pause as well.

Is an auto open and close lid the same as auto flush?

An auto open and close lid is not the same as auto flush. The lid feature raises the lid as you approach and lowers it when you step away; auto flush handles the flush after you have gone. Most fixtures in this collection do both, and TOTO calls the lid touchless, but they are separate systems — plenty of bidet seats offer an automatic lid without any flush control at all.

Do the flush sensors on an auto flush toilet wear out before the toilet does?

The flush sensors on an auto flush toilet are electronics, and the electronics are what date the fixture rather than the ceramic. The smart toilet guide on this site puts a smart toilet at 10 to 15 years or more with proper maintenance, and that covers the sensor, the lid motor, the pump and the seat heater as one package. Keeping the wand and bowl clean is most of what maintenance means here.

Does an auto flush toilet need less cleaning than a manual one?

An auto flush toilet needs less hand cleaning than a manual one at the touch points, because there is no handle or button to wipe down and the wand rinses itself. PREMIST wets the bowl before use and EWATER+ keeps the wand and the bowl hygienic. The bowl and seat still need attention — the store's cleaning guide suggests a soft cloth and mild soap roughly twice a week, and no bleach on nozzles.