CompoCloset S1 Dry Flush Sealing Toilet - S1

CompoCloset S1 Dry Flush Sealing Toilet - S1

The S1 redefines off-grid hygiene with its advanced, battery-powered, heat sealing system.

Unlike traditional dry flush toilets, the S1's urine diverter keeps solid and liquid waste completely separate, odor-free, and out of sight—no mixing, no mess. It is the world's first separating sealing toilet, allowing you to only bag and seal what you need, saving you money by reducing bag use.

What our Experts Think

• True “No-Mess” Dry Flush System – The S1 seals waste in a cartridge after each use, making it one of the cleanest and most hygienic portable toilet solutions available.
• Zero Water, Zero Odor Exposure – Fully waterless operation with airtight sealing helps eliminate odors when used and stored correctly.
• Ideal for Mobile & Compact Living – Built for RVs, camper vans, boats, cabins, and emergency backup setups where plumbing isn’t available.
• Fast, Simple Operation – One-button or simple flush action makes it extremely user-friendly compared to composting or cassette toilets.
• Low Maintenance Lifestyle Design – No composting material, mixing, or liquids to manage—just replace sealed waste cartridges when full.
• Clean, Modern Engineering – Designed for users who prioritize convenience, cleanliness, and minimal interaction with waste handling.

Q&A

Q: What is the CompoCloset S1 Dry Flush Sealing Toilet?
A: The S1 is a battery-powered off-grid toilet that separates liquid and solid waste, then heat-seals solids into odor-proof bags with the push of a button.

Q: Does the S1 toilet need water or plumbing?
A: No. It is completely waterless and does not require plumbing, making it ideal for RVs, vans, boats, and tiny homes.

Q: How does the S1 prevent bad odors?
A: It uses urine diversion (separating liquids) and instantly heat-seals solids in airtight liners, preventing smell and exposure.

Q: How is waste disposed of in the S1 system?
A: Liquids are collected in a removable bottle, while solids are sealed in small disposable bags that can be safely discarded according to local waste rules.

Q: Does the S1 toilet require electricity?
A: It runs on a rechargeable battery for the sealing system, with no need for permanent wiring or plumbing connections.

Q: How many uses does the S1 support before maintenance?
A: The urine tank typically lasts multiple uses before emptying, while sealed liner capacity depends on usage frequency (designed for multi-day off-grid use).

Q: Is the S1 toilet eco-friendly?
A: Yes. By separating urine and only sealing solids, it reduces plastic usage compared to traditional dry-flush toilets.

Maintenance Tips

• Replace sealing bags regularly for clean, hygienic operation
• Keep the waste compartment dry to maintain sealing performance
• Clean surfaces with mild, non-abrasive household cleaners
• Avoid overfilling to prevent jams and sealing issues
• Inspect battery and power connections for reliable operation
• Store refill cartridges in a cool, dry environment
• Wipe the sealing mechanism periodically to remove debris
• Use compatible refill liners for best flushing performance
• Check lid and seals routinely for secure odor control
• Regular maintenance helps extend toilet lifespan and efficiency