Waiora Clarity Plus II Whole House Rainwater Filter - 2 Stage, 20 Inch Jumbo, High Flow Sediment Removal NZ

Large homes on tank water put a real load on a filtration system. Multiple showers, the laundry, the kitchen — and you still want clear, clean water from every tap without losing pressure. The Waiora Clarity Plus II is built for that.

This is a 2-stage whole house system designed for larger New Zealand homes on rainwater or tank water. It uses 20 inch jumbo housings for high flow capacity. Stage one uses a 20 micron pleated filter to catch coarser debris — dirt, leaves, and organic matter. Stage two follows with a 1 micron polyspun filter to trap the fine silt that gets through. The result is clear water throughout the house, even when demand is high.

The twin housings arrive pre-mounted on a powder-coated bracket, ready to go on the wall. Connection is standard 25mm BSP. Filter changes are DIY-friendly with the included housing spanner.

Key specs at a glance

• 2-stage filtration
• Stage 1: 20 micron pleated sediment filter
• Stage 2: 1 micron polyspun sediment filter
• Housing: 20 inch x 4.5 inch jumbo
• Connection: 25mm BSP
• Cartridge life: 6–12 months (depends on water quality)
• Bracket: Powder-coated steel
• Warranty: 3 years

Why Kiwi homeowners choose the Clarity Plus II

• High-flow 20 inch design handles multiple outlets running at once without pressure drop
• Removes the sediment and organic matter that gives tank water its earthy taste and smell
• Protects your hot water cylinder, washing machine, and taps from grit and fine particles
• Larger filter surface means longer cartridge life between changes
• Prepares water for UV treatment — clear water is essential for UV to work effectively
• Simple DIY filter changes — no special tools needed beyond the included spanner
• Pre-mounted and ready to install

How it works

Stage 1 — Coarse Sediment

The 20 micron pleated filter catches the larger particles first — dirt, debris, leaves, and organic matter that collect in your tank. Starting coarse protects Stage 2 and extends overall cartridge life.

Stage 2 — Fine Sediment

The 1 micron polyspun filter captures the fine silt and particles that passed through Stage 1. The larger 20 inch format means more filter media, so it handles higher flow without sacrificing filtration quality.

Technical specifications

What's in the box

• Twin 20 inch jumbo housings (pre-mounted)
• 20 micron pleated sediment cartridge
• 1 micron polyspun sediment cartridge
• Housing spanner
• Mounting hardware

Frequently asked questions

Is the Clarity Plus II right for my home?

It's designed for larger New Zealand homes on rainwater or tank water where flow rate and sediment removal both matter. If you have a smaller home or lighter usage, the Clarity II (10 inch) covers the same two stages in a more compact format. Get in touch if you're not sure which suits you best.

How is the Clarity Plus II different from the Clarity II?

Both are 2-stage sediment systems for tank water. The Clarity Plus II uses 20 inch jumbo housings, which means higher flow capacity and longer cartridge life between changes. It's the better choice for larger households with higher water demand.

Does the Clarity Plus II make rainwater safe to drink?

The Clarity Plus II removes sediment and particulates. It does not treat bacteria or other micro-organisms. If you want to treat your rainwater for drinking, a UV system added downstream is the recommended next step. Get in touch and we can help you put together the right setup.

Does it need to be installed before or after my pump?

The Clarity Plus II is installed on the outlet side of your pump — after the pump, before the rest of the house. This means it protects your appliances and fittings downstream, not the pump itself. If you need pre-pump protection, get in touch and we can advise on the right setup.

Do I need a plumber to install it?

For most customers, yes — a licensed plumber is the safest path and protects your warranty on the plumbing side. That said, the Clarity Plus II arrives fully assembled, uses standard 25mm BSP fittings, and mounts with the included hardware. If you're confident with household plumbing, the installation itself is straightforward. If you're not sure, get in touch and we'll help you decide.

How often do I replace the cartridges?

Every 6–12 months, depending on how much sediment is in your water. The larger 20 inch format typically extends cartridge life compared to a 10 inch system under the same conditions. Check the pleated filter first — if it's visibly loaded with debris, it's time.

Do I need bypass valves?

They're not included, but they're worth adding. Bypass valves let you isolate the filter during cartridge changes without shutting off water to the rest of the house. Ask us about adding a set when you order.

What warranty does it come with?

3 years.