GROHE Blue Home Duo Filtered and Sparkling Water System

The GROHE Blue Home Duo (model 31455001) is an integrated kitchen filtered water system that connects to the cold water supply and delivers chilled still, medium-carbonation, and full-carbonation water through a dedicated two-in-one faucet installed at the kitchen sink. The system uses a GROHE BWT Blue filter cartridge rated for 1,500 liters (approximately 400 gallons or 6 months of typical use) that reduces chlorine, chloramines, limescale, heavy metals, and pharmaceutical residues using a 5-stage filtration process. The built-in CO2 cylinder (600g, included) provides up to 60 liters of sparkling water per cylinder before replacement. A chilling unit (stores under the sink) maintains filtered water at 4-8 degrees Celsius for immediate cold dispensing without a refrigerator connection. The GROHE Blue app (iOS and Android) monitors filter life, CO2 level, and chilling unit status. The duo faucet delivers both filtered water (via the dedicated spout) and regular tap water (through the standard spout), providing flexibility for cooking and washing without consuming filtered water unnecessarily.