washlet

Washlet is a brand of advanced toilet seat with built-in bidet functions produced by the Japanese company Toto. The term has also become a generic descriptor for Toto's series of bidet seats, though other manufacturers produce similar products. A Washlet typically integrates a water spray nozzle, water heating, and a heated seat into a standard toilet. Common features include front and rear wash sprays, adjustable spray pressure and temperature, a self-cleaning nozzle, one or two spray modes, a heated seat, an air dryer, a deodorizer, and a wireless or wall-mounted remote control; some models add night lighting, auto lid opening, or sensor-activated operation. The device is designed to improve personal hygiene and reduce toilet paper use.

Washlet was introduced by Toto in the 1980s as a premium bidet toilet seat in Japan. It gained widespread popularity in Japanese homes and public restrooms and expanded to other markets during the 1990s and 2000s. Over time, features evolved from basic nozzle washes to device-integrated electronics, sensors, and energy-saving modes.

Water supply is connected to toilet plumbing; user activates wash using controls. The nozzle extends and retracts; it is self-cleaning before and after use. Temperature and pressure adjustable. Most units require an electrical outlet; some jurisdictions require GFCI protection.

In many markets, Washlets are lauded for hygiene and comfort; criticisms include cost, maintenance, and privacy concerns; environmental impact includes reduced toilet paper use but increases in electricity and water use. Adoption varies by region and model.