Quooker

Quooker is a brand name and the genericized trademark for a type of boiling-water tap, a kitchen appliance that instantly dispenses boiling water (typically 100°C/212°F) from a countertop tap connected to a small tank that keeps water at boiling temperature under the sink. The Quooker company, founded in the Netherlands in 1970, is the primary manufacturer and distributor of these devices, and the name has become widely used to refer to similar products from other manufacturers, much like "Hoover" for vacuum cleaners.

The system consists of a small insulated tank, typically made of stainless steel, that is connected to the cold water supply. This tank keeps a reserve of water at near-boiling temperature. When the tap is activated, boiling water is dispensed. Modern Quooker taps often feature safety mechanisms to prevent accidental scalding, such as a childproof handle and aerated flow that prevents the water from splashing.

Beyond providing instant boiling water, some Quooker models also offer filtered cold water, sparkling water, and hot water at varying temperatures. The energy efficiency of Quooker systems is a subject of debate, with claims and counter-claims regarding the energy consumption required to maintain the water at near-boiling temperature versus the energy used to boil water in a kettle.