The K5 is our original filter for all K&W Instant Boiling Water Tanks - a dependable all-rounder designed for everyday household use. It uses a dual-action blend of activated carbon and calcium media to filter impurities, reduce chlorine, improve taste and help prevent limescale. Ideal for maintaining both the flavour of your water and the performance of your boiling water tank.

Key Specifications

Product Model: K5

Dimensions: 63.5 × 281 mm

Purified Water Flow Rate: 3.2L/min

Purified Water Volume: 4000L

Applicable Water Temperature: 4–38°C

Chlorine Removal Rate: ≥ 90%

Activated Carbon pH Range: 6–10

Oxygen Removal Rate: ≥ 20%

Filtration Function: Removes impurities, odours, and residual chlorine

Recommended Replacement: Every 6 months

Best For: Standard household tap water