Add sparkling water to your tap with the Quooker Cube filtering system. This device can join up with any compatible Quooker tap to add filtered cold water dispensing to its cold, hot and water capabilities. It seamlessly joins up to the usual operating method, with the illuminated ring that usually indicates boiling water instead turning blue for the sparkling variety. The Cube's cooling tank has a 60-litre capacity and is attached to a carbon dioxide cylinder, which powers the internal water jet. The included filter set is made up of two parts, made up from activated carbon and hollow fibre, which significantly improve water quality and should last for up to a year.