Before falling for a smart Japanese toilet, one technical question should be asked first: will the model really fit in your space? Unlike a conventional toilet, a Japanese toilet incorporates an electronic tank, a retractable wash arm, and sometimes a side control panel—all elements that require a little more clearance around the bowl.

Measurements to take before making a purchase

Three dimensions really matter: the overall depth of the unit (often between 600 and 700 mm), the width (generally around 400 to 420 mm), and above all, the clear space needed in front and on the sides to comfortably open the motorized seat. A minimum space of 15 cm on each side is recommended for maintenance and access to the controls.

Floor-standing or wall-hung toilet: what impact on the space?

A wall-hung model like the Nelsmann SORA visually frees up the floor and makes cleaning easier, but requires a support frame built into the wall—so a little foresight if you are in the middle of a renovation. A floor-standing model, which is easier to install, takes up a little more floor space.

Our practical advice

For a small bathroom (less than 3 m²), opt for a compact wall-hung model with a discreet integrated tank. For a more generous bathroom, you can opt for models with more comfort features (heating, night light) without space constraints.