BT9 12 Month 9,000 Litre Replacement Filter for System 90

Maintain the performance of your System 90 Under Sink Water Filter with the genuine BT9 Replacement Filter.

Designed to last up to 12 months or 9,000 litres, the BT9 replacement cartridge uses premium silver-impregnated coconut shell activated carbon and an integrated 10-micron Vion F pre-filter to continue delivering cleaner, fresher tasting drinking water throughout your home.

The sealed cartridge design makes replacement quick, hygienic and simple, helping to maintain consistent filtration performance while reducing chlorine, unwanted tastes and odours.

Key Features

• Genuine replacement cartridge for the System 90
• Up to 9,000 litres or 12 months
• Improves taste and odour
• High-flow filtration
• Silver-impregnated activated carbon
• 10-micron sediment pre-filtration
• Easy DIY replacement
• Manufactured in the UK

What contaminants does the BT9 filter reduce?

Using premium silver-impregnated coconut shell activated carbon, the filter reduces a wide range of contaminants commonly found in UK mains drinking water, including:

• Chlorine
• Chlorine taste and odour
• Sediment and larger microplastic particles (10 micron)
• Lead
• Pesticides
• Herbicides
• Trihalomethanes (THMs)
• PFOS and selected PFAS compounds
• Volatile organic compounds (VOCs)
• Organic contaminants that affect water quality
• Selected pharmaceutical and hormone residues

The BT9 replacement filter improves the taste and quality of your drinking water while retaining the beneficial natural minerals found in mains water.

Technical Specifications

• Capacity: 9,000 litres / 12 months
• Filter media: Silver-impregnated activated carbon
• Pre-filtration: Vion F 10-micron screen
• Push-fit connectors
• WRAS Approved
• BS6920 Compliant
• Maximum pressure: 10 bar (140 PSI)
• Dimensions: 250 × 120 mm
• Warranty: 12 months
• Filter body warranty: 6 months (excluding impact damage)

Looking for the whole kit? Click here for the System 90 starter kit.