What is a smart toilet seat?

There is no definition

“Smart toilet seat” is a marketing phrase with no standard behind it. No certification body defines it and no manufacturer is constrained by it.

In practice it means an electric bidet seat, and the useful question is not whether a seat is smart but which of the six or seven features it actually has.

The features, and what each one needs

Heated seat. A resistive element under the seat surface. Brondell publishes three levels on the Thinline T22. In an unheated bathroom this is the feature owners say they would miss most, ahead of the wash.

Warm water. Two approaches. A tank holds a reservoir at temperature — Brondell publishes tank heating on the SE600 and SE400 — and runs out. An instant heater warms water as it passes and does not; Brondell publishes an instant ceramic heater on the Thinline T22.

Warm air dryer. An element and a fan. Brondell publishes an adjustable dryer on the SE600 and five levels with temperature control on the T22. It is slower than paper and it is the feature that matters most to anyone with limited reach.

Deodorizer. A small fan drawing air through a filter. Brondell publishes one on the SE400.

Presets and programmable settings. Store a pressure, position and temperature and recall them with one button. Published on the T22.

Nightlight. Exactly what it sounds like, and more useful than it sounds at three in the morning.

The one thing they all need

Every feature above needs mains power, and that is the constraint that decides whether this category is available to you at all.

The published cord lengths are short: Brondell publishes 3.9 feet on the Thinline T22 and 4 feet on the SE400, and no length at all for the SE600.

Four feet is not much. Measure from the outlet to the back of the toilet before you order, and never bridge the gap with an extension lead — a bathroom outlet should be GFCI protected and a domestic lead across a wet floor defeats that.

A great many older bathrooms have no outlet at all, which is why the non-electric warm water route exists and why it is the right answer for more people than the marketing suggests.

What nobody publishes

Two gaps run across the entire category, and both are the sort of thing you would expect to find.

Wattage. Not one bidet seat researched for this site publishes a wattage. That is unusual for a plug-in appliance with a heating element, and it means we cannot do the running-cost arithmetic we do for towel warmers, where WarmlyYours publishes 90 W and Zadro publishes 480 W.

Maximum user weight. Also absent everywhere. A plain plastic seat routinely publishes one; a seat costing several times as much does not.

We will not estimate either. If a figure matters to you, ask the manufacturer directly and get the answer in writing.

Are the extra features worth it?

Honestly, it depends on one thing: whether your bathroom is cold.

In a warm bathroom, a mechanical attachment gets you the wash for a fraction of the cost, and the heated seat and dryer are pleasant extras. The attachment picks are here.

In a cold bathroom the heated seat stops being a luxury. Sitting on a cold seat and then being washed with cold water is why people abandon mechanical bidets after a fortnight, and it is the single strongest argument for the electric category.

If you have a cold bathroom and no outlet, the honest sequence is: fix the room first with a bathroom heater, then buy a non-electric warm-water seat. It gets you most of the way for none of the wiring.