Which Toilet Has the Best Bidet Built In?
The most complete built-in bidet TOTO makes is the NEOREST, where the washing system, the flush and the ceramic are engineered as one fixture rather than a seat bolted onto a bowl. Everything here clears $2,000, but that price covers two genuinely different builds: fully integrated NEOREST and G5A units, and WASHLET+ toilet sets that pair a TOTO toilet with a matched WASHLET seat.
NEOREST: one fixture, top to bottom
NEOREST is TOTO's flagship line. The NX1, NX2, RS, AS and LS flush at 1.0 or 0.8 gallons on a dual-flush control; the wall-hung WX1 and WX2 flush at 1.2 or 0.8 gallons. TOTO describes the NX2 as a "sleek, low profile one-piece skirted toilet with integrated cleaning & comfort function in the seat," and lists TORNADO FLUSH, CEFIONTECT glaze, ACTILIGHT, EWATER+ on the wand and bowl, a heated seat, a warm air dryer, a deodorizer, a night light, sensor or remote lid operation, ADA compliance and a 12-inch rough-in. On NEOREST bowls TOTO also states that PREMIST wets the surface, which "aids in waste elimination approximately 80% better than a dry bowl." The full line sits in TOTO NEOREST.
WASHLET+ sets: two parts, one seamless result
A WASHLET+ set is TOTO's factory pairing of a high-performance toilet with a WASHLET bidet seat, and in TOTO's own words "each toilet-and-seat set is harmoniously designed with no protruding pipes or cords." The supply line and power cord run behind the skirting instead of across the floor, which is the visual difference between a WASHLET+ set and a seat added to a toilet you already own. Most sets above $2,000 carry the S7 or the S7A, which adds the EWATER+ system that mists and cleans the bowl water after every use. Aquia IV, Nexus, UltraMax II, Carlyle II, Vespin II, Legato, Aimes, Connelly and Drake II all appear in this collection in that form.
Wall-hung models
Several models here hang on an in-wall carrier rather than standing on the floor. TOTO specifies the WT175MA In-Wall Tank System for the NEOREST WX1, ordered separately. You get a clear floor beneath the bowl and a shallower footprint, but the carrier has to be set before the wall is closed, so it belongs in a remodel or a new build rather than a swap-out. The EP, RP and AP WASHLET+ models here mount the same way. Compare them in wall-hung toilets with bidets.
Which Bidet Is the Most Hygienic?
The most hygienic bidets are the ones that clean themselves as well as they clean you, and that is largely what this tier buys. EWATER+ electrolyzes water to produce hypochlorous acid, which TOTO says is "used to keep the wand and toilet bowl hygienic," and it runs automatically. CEFIONTECT is a smooth glaze that TOTO says "prevents particulates from adhering to porous, ceramic surfaces," so less sticks in the first place. TORNADO FLUSH uses two nozzles to rinse the bowl in a cyclonic action. The practical effect is a bowl that needs scrubbing less often.
How to Choose a Luxury Bidet Toilet
Choosing at this level comes down to four decisions: one integrated fixture or a matched set, what your rough-in or your wall can take, where the power is, and which automatic features you will use every day.
1. Integrated unit or WASHLET+ set
An integrated NEOREST or G5A gives the lowest, cleanest silhouette and the deepest feature set, because the seat electronics and the flush were designed together. A WASHLET+ set gives you a choice of bowl shape, height and styling across a dozen TOTO lines while still hiding the hose and cord. If the wash is what you want and the fixture is not, a bidet toilet seat on the toilet you already own does the same washing job for far less.
2. Measure the rough-in, or plan the wall
For a floor-mounted model, measure from the finished wall to the center of the closet bolts. TOTO lists the NEOREST NX2 at a 12-inch rough-in. Twelve inches is the common size, but 10-inch and 14-inch rough-ins exist, so measure yours before you order; the rough-in size guide walks through it. Wall-hung models have no floor rough-in at all. What matters there is carrier position, stud spacing and finished wall depth.
3. Confirm the outlet
Every toilet in this collection is electric. Bidets USA notes that smart toilets need a GFCI outlet near the toilet, usually a standard 120V one. If there is no outlet behind or beside the bowl, get it added to the scope of work before the fixture arrives, not after.
4. Pick the automation you will actually use
Auto flush, an auto open/close lid, a night light, a deodorizer, a heated seat and a warm air dryer are what separate this tier from a mid-range setup. TOTO gives the NEOREST WX1 a dryer with five variable settings and a remote with four-user memory. Work out which two or three you would genuinely miss, then compare the same features one tier down in bidet toilets from $1,000 to $2,000.
What Is the Downside of a Bidet Toilet?
The downsides of a bidet toilet are cost, the electrical requirement and repairs that are less simple than a standard toilet's. Bidets USA lists all three, along with a short learning curve on the controls and the fact that washing, drying and the heated seat stop while the power is out. TOTO builds a manual flush backup into the NEOREST WX1 for that situation, so the toilet still flushes.
The other downside is specific to buying the bidet as part of the fixture. On a seat, you can change your mind and swap the seat. Here the washing system and the toilet are one purchase, so upgrading later means replacing the whole thing. That argues for buying the feature set you want now rather than the entry point of the tier.