What an Elongated Smart Toilet Is
An elongated smart toilet is a complete toilet with an oval bowl and the bidet built into the fixture rather than added on as a separate seat. The bowl, the flush system, the washing wand and the electronics ship as one piece, so there is no seat to buy separately. Every model in this collection is a TOTO, and TOTO's own spec sheets describe each of them as having an elongated front bowl.
The shape is simple to check. Measure from the seat bolts at the back of the bowl to the front rim: about 18.5 inches is elongated, about 16.5 inches is round. Those two inches buy seating room and cost you two inches of floor depth, so clearance in front of the bowl is what to measure before you order. Around 21 inches of clear space in front is the usual guidance. Our guide to elongated versus round bowls walks through it.
What the built-in features do
The feature set varies by model, but across this collection you will find:
- Front and rear warm-water washing with adjustable temperature and pressure, plus oscillating and pulsating spray.
- An instantaneous water heater on the NEOREST, G5A and G5A Lite, so warm water is made on demand rather than stored, and does not run out partway through a wash.
- A heated seat with temperature control, and a warm-air dryer with five temperature settings on the WASHLET G5A and three on the G5A Lite.
- An automatic air deodorizer that works inside the bowl during and immediately after use.
- A touchless auto open/close lid and auto flush, so an ordinary visit needs no contact with the fixture.
- A multifunction remote with memory settings for up to four users on the G5A and G5A Lite, and a night light in the bowl on the G5A.
The cleaning technology is TOTO's own. EWATER+ electrolyzes water into hypochlorous acid, which keeps the wand and the bowl hygienic between uses. PREMIST wets the bowl before each use so waste has less to cling to, and on a NEOREST bowl TOTO states this aids waste elimination approximately 80% better than a dry bowl. CEFIONTECT is an ion-barrier glaze that stops debris sticking to the ceramic, and TORNADO FLUSH rinses with angled water jets rather than rim holes. All four are standard across the NEOREST range.
The Trade-offs of an Elongated Smart Toilet
The disadvantages of an elongated smart toilet are cost, a dependence on electricity, the floor depth the longer bowl takes up, and repairs that need specialized parts. All four are easier to handle before you order than after.
Cost comes first, because you are replacing the whole fixture rather than the seat. Our smart toilet guide puts full smart toilets at roughly $1,000 to $5,000 or more, against $80 to $800 for a seat that keeps the bowl you already own. If the bowl is fine and only the washing matters to you, bidet toilet seats get you most of the way for a fraction of that.
Electricity is the second. A smart toilet needs a GFCI outlet near the bowl, and in an outage the wash, the heated seat, the dryer, the deodorizer and the approach sensors all stop. The flush does not: TOTO lists auto flush with a back-up manual flush for power outages on the G5A, the G5A Lite and the NEOREST models.
Third, the elongated bowl reaches roughly two inches further into the room than a round one, which in a powder room or a tight alcove is the difference between a comfortable door swing and a daily annoyance.
Fourth, electronics eventually need electronic service. A wand that stops extending is a parts-and-service job rather than a plunger job, though plenty of faults turn out to be settings. Our WASHLET troubleshooting guide covers the common ones.
What to Know Before Buying an Elongated Smart Toilet
Before buying an elongated smart toilet, check four things: your rough-in, the clear floor space in front of the bowl, whether there is a grounded outlet within reach, and whether you want a floor-mounted or a wall-hung fixture. Everything after that is a question of which features you want to pay for.
1. Measure your rough-in first
Rough-in is the distance from the finished wall to the center of the closet bolts holding your toilet down, and it decides what will physically fit. Twelve inches is standard; 10-inch and 14-inch bathrooms exist, so measure rather than assume. It matters more here than on an ordinary toilet, because the NEOREST range is 12-inch only, using a modular rough-in with no 10-inch or 14-inch alternative offered. The G5A and G5A Lite are 12-inch too. Our rough-in size guide shows how to measure, and if you come up at 10 inches, start with 10 inch rough-in smart toilets instead.
2. Plan the outlet before anything else
Yes, smart toilets need electrical power, and the outlet is the requirement most likely to hold up an installation. A GFCI outlet near the toilet runs the instantaneous water heater, the seat heater, the dryer, the deodorizer and the approach sensors that drive the lid and the flush. Bathrooms built before smart toilets were common often have no outlet within reach of the bowl, and adding one is an electrician's job, not a plumber's. Settle it before the toilet arrives.
3. Decide between floor-mounted and wall-hung
A floor-mounted one-piece sits on the drain you already have, which makes it the straightforward swap. The WASHLET G5A, the G5A Lite and the NEOREST NX1, NX2, RS, AS and LS are all floor-mounted. A wall-hung model instead hangs on an in-wall carrier and tank, so the bowl floats clear of the floor. That means opening the wall, which is a remodel decision rather than a weekend one, and there is no floor rough-in to match. The NEOREST WX1 and WX2 and the RP WASHLET+ RW work this way; TOTO rates the RW's system for support up to 880 lbs. Compare the options in wall mounted smart toilets.
4. Match the model to the bathroom
The right elongated smart toilet is the one that fits your rough-in and your power situation first, and matches how much automation you want second. Here is how this collection separates out:
- WASHLET G5A Lite — 1.2 / 1.0 GPF TORNADO FLUSH, 12-inch rough-in, compact one-piece skirted design, Universal Height and ADA compliant. Three-setting dryer, no night light.
- WASHLET G5A — the same flush volumes and rough-in, with a five-setting dryer and a night light in the bowl.
- NEOREST NX1, NX2, RS, AS and LS — 1.0 / 0.8 GPF dual flush, the lowest volumes in this collection, with TOTO's ACTILIGHT hydrophilic glaze system on top of the usual technologies. Universal Height and ADA compliant; the RS measures 17-11/16 inches from floor to seat.
- NEOREST WX1 and WX2, RP WASHLET+ RW — wall-hung. The RW uses DYNAMAX TORNADO FLUSH at 1.28 / 0.9 GPF over an in-wall polyethylene tank.
If you are shopping the top of the range rather than the entry point, the NEOREST models sit in luxury bidet toilets over $2,000.