Bionova higher-capacity self-contained composting toilet
Bionova | Cabin Plus
The higher-capacity Cabin Series model, adding urine separation and dedicated liquid storage for improved moisture management.
Cabin Plus retains the compact self-contained format, automated internal mixing, extractor-fan airflow and temperature-managed chamber support of the standard Cabin, while separating urine from the main composting process.
FormatSelf-Contained
Cabin Series system
Liquid managementUrine Separation
Dedicated urine container
Power220–240V
170W rated system
Range positionHigher Capacity
For greater or more frequent use
Product background
The Cabin Series with stronger liquid management
Cabin Plus is based on the same compact self-contained concept as the standard Cabin but adds urine separation and a dedicated urine container.
Keeping more liquid out of the main composting mass helps the system maintain a more manageable moisture balance, particularly where occupancy is greater or the toilet sees more frequent use.
That makes Cabin Plus particularly relevant to larger baches, cabins, glamping accommodation and modular getaway buildings where customers want the same modern self-contained format but need greater operating flexibility.
How it works
Separate liquid, process solids and maintain the biological balance
Stage 1 Separate liquid Urine is separated from the main composting pathway and directed into the dedicated urine container, reducing liquid loading within the composting chamber.
Stage 2 Mix & aerate Automated internal mixing and extractor-fan airflow support porosity, oxygen movement and biological processing within the solids chamber.
Stage 3 Maintain balance Temperature-managed chamber support works alongside correct bulking, moisture management and routine maintenance to maintain the composting environment.
Why choose Cabin Plus
Better suited to greater or more frequent use
- Urine separation reduces liquid entering the main composting chamber.
- Dedicated urine container provides a separate liquid-management pathway.
- Automated internal mixing supports the composting mass.
- Extractor-fan airflow supports ventilation and biological operation.
- Temperature-managed chamber support helps maintain the internal operating environment.
- Same compact self-contained format as the standard Cabin.
Capacity context: Cabin Plus is positioned by WCTNZ® as the higher-capacity Cabin Series model. Exact suitability still depends on occupancy, use pattern, climate and ongoing system management.
Specifications
Product and electrical details
Unit size
600mm long × 470mm wide × 510mm high.
Shipping dimensions
Approximately 780mm × 500mm × 740mm.
Unit weight
Approximately 30kg.
Maximum load bearing
150kg.
Outer body
High-gloss polypropylene.
Internal materials
Polyamide and polypropylene.
Power
220–240V AC, 50/60Hz, 170W.
Electrical classification
Class I.
Average energy use
Approximately 0.55kWh per day, depending on operating conditions and use pattern.
Key Plus feature
Urine separation and dedicated urine container.
Good to know before purchase
Better liquid management still works together with the biological process
Cabin Plus remains an operating composting system. Urine separation reduces liquid loading within the solids chamber, while the biological process still depends on the correct balance of carbon, moisture and airflow.
Correct setup and routine management matter. The specified bulking material, biological additives and normal owner checks remain part of successful operation.
Higher capacity does not mean unlimited capacity. Occupancy, seasonal peaks and frequency of use should still be matched to the system before purchase.
WCTNZ® provides the system guidance. Correct commissioning and understanding how the composting mass responds to use are important parts of reliable long-term operation.
WCTNZ® is the exclusive authorised New Zealand distributor of Bionova composting toilets. Bionova systems supplied through WCTNZ® include the applicable manufacturer warranty pathway and local product support.
Cabin or Cabin Plus?
Choose Cabin for smaller occupancy and simpler self-contained operation. Choose Cabin Plus where greater use or improved liquid management makes urine separation the better pathway.
Before you choose, think:
1. Your place — tiny home, bach, family home, RV, or public site
2. Your building — whether it suits a self-contained or split composting toilet system
3. Your needs — user numbers, maintenance preferences, and how off-grid you want to be
To narrow it down properly, start with the Composting Toilet Guide .
Open the WCTNZ® Selector Guide »
