Whole House Filter + UV Steriliser | Big Blue

A Big Blue twin-housing whole-house water filter integrated with 254 nm UV-C disinfection - the entry-level point-of-entry filtration with built-in pathogen kill. The configuration uses two Big Blue 20" × 4.5" cartridges (sediment + carbon) before the water passes through the UV chamber.

Where This Sits in the UV Range

• This system ($499.95): entry-level twin-cartridge Big Blue + UV - sediment and carbon plus UV disinfection
• 3-stage UV system ($1299.95): adds a third filtration stage and typically more capable UV chamber
• 4-stage UV system ($1499.95): the top tier - additional carbon stage for longer service intervals

If your install demands UV disinfection but doesn't need the depth of cartridge filtration in the 3-stage or 4-stage builds, this is the right price point.

What's Included

• Twin Big Blue 20" × 4.5" filter housings
• White-coated metal frame for support
• 5 micron poly sediment cartridge (starter)
• 5 micron coconut-shell carbon block cartridge (starter)
• UV disinfection chamber with 254 nm UV-C lamp
• Built-in pressure release valve
• 1" inlet and outlet ports
• Wall-mount bracket

Two-Stage Filtration + UV Disinfection

• Stage 1 - 5 micron PP sediment: captures silt, dirt, rust, and visible particulate. Critical pre-treatment for the UV chamber - suspended particles shadow pathogens from the UV light.
• Stage 2 - 5 micron coconut-shell carbon block: removes chlorine, taste, odour, and organic contaminants. Coconut-shell carbon has higher surface area per gram than coal-based carbon, giving better adsorption capacity at the same cartridge size.
• UV chamber: 254 nm UV-C germicidal lamp inactivates bacteria, viruses, and protozoan cysts. Chemical-free disinfection.

Maintenance Notes

Replace the UV lamp every 12 months even if it's still glowing - UV-C output drops below germicidal levels well before the lamp fails. Keep the sediment cartridge fresh: turbidity blocks UV penetration. Replace cartridges every 6-12 months on typical supplies.

Installation

Professional installation recommended. Connects to the cold supply line at the point of entry. Requires 240 V mains power at the install point for the UV chamber.

What This System Targets

This system combines sediment filtration, activated carbon and UV disinfection. The filtration stages reduce dirt, sand, silt and rust plus chlorine, taste and odour; the UV stage is used to inactivate bacteria, viruses and protozoan parasites/cysts.

Because UV performance depends on clear water reaching the lamp, the upstream filtration stages are especially important. This system is not a true water softener: dissolved calcium and magnesium that cause hardness and scale require ion-exchange softening or membrane treatment.