Availability: 3rd quarter 2026
CompoCloset™ | S1 Dry Flush Sealing Toilet
The CompoCloset™ S1 Dry Flush Sealing Toilet is a compact, self-contained toilet designed for boats, RVs, campervans — and even as a tidy bedside commode at home. It delivers a clean, waterless, chemical-free experience with push-button sealing that keeps everything hygienic, fresh, and out of sight. The built-in urine diverter means fewer “flushes,” less plastic, and no need to bag liquids, making day-to-day use simple and cost-effective.
✅ Green Sticker Compliant (Plumbers, Gasfitters, and Drainlayers (Self-Contained Vehicles) Regulations 2023)
Unique in the category: the S1 is the world’s first urine-diverting dry-flush (sealing) toilet — separating liquids from solids before heat-sealing the solids. Choose liners made from either compostable film or recycled plastic to suit your disposal preferences.
S1 Design Features
- Push-button, battery-powered heat-seal mechanism — simple to use, no chemicals required
- Urine diversion reduces bag use (no more “paying to pee”) and keeps things drier and fresher
- Discreet containment and simple management — solids are sealed in small liners for easy, hygienic emptying
- LED urine-level indicator for timely, mess-free emptying
- 6.5L liquids chamber
- 15L solids chamber
- Power & runtime: internal rechargeable 12V battery for sealing (50+ seals per charge) and a 9V battery for the LED indicator
- Portable, low-profile design with side handles
- Low-cost, eco-friendly liner options — your choice of compostable liners or recycled-plastic liners
The S1 dry-flush toilet offers a hygienic, odour-free, low-maintenance solution for travel, tiny spaces, and bedside commode convenience. Its sealed-liner system keeps contents discreetly out of view — ideal where privacy and ease of care matter — while urine diversion cuts plastic use and extends time between empties.
WCTNZ® is the exclusive authorised distributor of CompoCloset™ toilet systems in New Zealand. All CompoCloset™ products available through WCTNZ® are guaranteed authentic, include official manufacturer warranties, and come with comprehensive local customer support—making us New Zealand’s trusted source for sustainable, waterless toilet solutions.
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 »