Phoenix Composting Toilet™ for Bunkers & Safe Rooms

Off-grid, low-odour sanitation for long-duration sheltering

When water, sewer, and pump-outs aren’t an option, Phoenix™ composting toilets deliver reliable, sealed, no-flush performance for private safe rooms and high-occupancy bunkers. The system’s aerobic process and active ventilation keep odours down, while modular capacity scales to your headcount and dwell time. WCTNZ® is the authorised New Zealand dealer—design support, parts, and documentation are all handled locally.

Why bunker owners choose Phoenix™

• No water or sewer required—true off-grid operation
• Low-odour, continuous-use aerobic process with active venting
• Scalable capacity for multi-week occupancy and multi-year operations
• Low running power and simple, scheduled service routines
• Easy system repair and recovery
• Recycling of primary resources—for serious bunker operations
• NZ supply, spares, and support from WCTNZ®

Configurations

Residential (R): Quiet, compact setups for private/HNWI bunkers.

Commercial (C): Heavy-duty components for high throughput and facilities teams with mixing automation.

LBC (Living Building Challenge) Variant: Same as Commercial, supplied with documentation to meet LBC-standard compliance requirements in Aotearoa New Zealand.

We offer three Phoenix™ models to match footprint and capacity. Tell us your planned occupancy and duration—we’ll size the right unit with a redundancy plan.

Get in touch or ask you Builder about our options. 0800 022 027

Mini-FAQ?

Will it work in a sealed/filtered bunker?

Yes—Phoenix™ uses dedicated venting and can be integrated with your bunker’s filtered ventilation plan.

How do I size the system?

We size by occupants × days. We’ll recommend a model, service interval, and a redundancy/back-up plan.

What’s different about the LBC variant?

It’s the commercial configuration supplied with the documentation package to meet Living Building Challenge requirements for LBC compliance in Aotearoa New Zealand.

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