CompoCloset S1 Dry Flush Sealing Toilet with Urine Diverter
Overview
New pre-orders ship in August. The CompoCloset S1 is a battery-powered dry flush sealing toilet with a built-in urine diverter that keeps liquid and solid waste separate. By sealing only solid waste, the S1 helps reduce bag use compared with traditional sealing toilets that bag everything together. It is designed for off-grid use in vans, RVs, boats, and compact spaces where water-free operation and simple waste handling matter.
The urine diverter routes liquid waste into a removable bottle, while the internal heat-sealing system discreetly seals solid waste out of sight. An LED urine level indicator helps signal when the urine bottle is full, and sturdy side handles make the unit easier to move when needed. The toilet includes one cartridge liner of bags to get started.
The S1 uses no water. The heat sealing system runs on a rechargeable 12v Li-ion battery, and the urine level indicator uses a 9v battery, not included. One cartridge liner of bags is included.
Key Features
- Separating Sealing System: Built in urine diverter keeps liquids and solids separate, so only solid waste is sealed and bagged.
- No Water, No Plumbing Needed: Designed for dry operation without the need for water hookups or black tank plumbing.
- Rechargeable Battery Powered Sealing: The internal heat sealing system operates on a rechargeable 12v Li-ion battery.
- LED Urine Bottle Alert: Integrated LED indicator lets users know when the urine bottle is full.
- Compact and Portable for Off Grid Use: Small footprint, sturdy side handles, and separate waste containers make it easier to use in mobile and off grid setups.
What is included
- S1 Dry Flush Sealing Toilet
- One cartridge liner of bags
How it works
Liquid waste is directed into the urine bottle, while solid waste is sealed with the battery-powered heat sealing system. This separation helps reduce odor, limits unnecessary bag use, and keeps waste out of sight until emptying.
Power and refill details
- Heat sealing mechanism: rechargeable 12v Li-ion battery
- Urine level indicator: 9v battery, not included
- Battery charge: up to 50+ flushes
- Estimated refill cost: $15 to $20 per roll
- Estimated cost per use: about $0.50 per flush
Technical Specs
| Spec | Details |
|---|---|
| Dimensions | 17.0 in D x 15.2 in W x 16.5 in H |
| Solids Container Capacity | 1.5 gallon, 15.7 liter |
| Urine Bottle Capacity | 1.7 gallons, 6.4 liter |
| Weight | Approx. 29 lbs, 13.2 kg |
| Body Material | ABS plastic body |
| Hardware Materials | Stainless steel hinges, waterproof connectors |
| Power for Sealing System | Rechargeable 12v Li-ion battery |
| Power for Urine Level Indicator | 9v battery, not included |
| LED Indicator | Alerts when urine bottle is full |
| Liquid Use Guidance | Up to 20 liquid uses before emptying |
| Operation | No water required |
| Included Starter Supply | One cartridge liner of bags |
Resources and Downloads
- Quick Start Guide - 1 Dry Flush Sealing Toilet (Coming Soon)
Frequently Asked Questions (click to expand)
The S1 uses a built in urine diverter to keep liquid and solid waste separate, so only solid waste is sealed and bagged.
No. The S1 is a water free toilet and does not require water to operate.
The heat sealing mechanism runs on a rechargeable 12v Li-ion battery. The urine level indicator uses a 9v battery, which is not included.
The product information states up to 20 liquid uses before the urine bottle needs to be emptied but it depends how large or small each use is as it's a 1.7-gallon bottle.
The S1 includes one cartridge liner of bags for getting started.
The S1 measures 17.0 inches deep, 15.2 inches wide, and 16.5 inches high, and weighs about 29 pounds.
The product information references compostable bags and recycled plastic bag options.
The stated battery charge lasts for up to 50+ flushes.
Estimated refill cost is $15 to $20 per roll, or about $0.50 per flush.
A two-year warranty on manufacturing defects.
Original: $1,199.00
-65%$1,199.00
$419.65








Description
Overview
New pre-orders ship in August. The CompoCloset S1 is a battery-powered dry flush sealing toilet with a built-in urine diverter that keeps liquid and solid waste separate. By sealing only solid waste, the S1 helps reduce bag use compared with traditional sealing toilets that bag everything together. It is designed for off-grid use in vans, RVs, boats, and compact spaces where water-free operation and simple waste handling matter.
The urine diverter routes liquid waste into a removable bottle, while the internal heat-sealing system discreetly seals solid waste out of sight. An LED urine level indicator helps signal when the urine bottle is full, and sturdy side handles make the unit easier to move when needed. The toilet includes one cartridge liner of bags to get started.
The S1 uses no water. The heat sealing system runs on a rechargeable 12v Li-ion battery, and the urine level indicator uses a 9v battery, not included. One cartridge liner of bags is included.
Key Features
- Separating Sealing System: Built in urine diverter keeps liquids and solids separate, so only solid waste is sealed and bagged.
- No Water, No Plumbing Needed: Designed for dry operation without the need for water hookups or black tank plumbing.
- Rechargeable Battery Powered Sealing: The internal heat sealing system operates on a rechargeable 12v Li-ion battery.
- LED Urine Bottle Alert: Integrated LED indicator lets users know when the urine bottle is full.
- Compact and Portable for Off Grid Use: Small footprint, sturdy side handles, and separate waste containers make it easier to use in mobile and off grid setups.
What is included
- S1 Dry Flush Sealing Toilet
- One cartridge liner of bags
How it works
Liquid waste is directed into the urine bottle, while solid waste is sealed with the battery-powered heat sealing system. This separation helps reduce odor, limits unnecessary bag use, and keeps waste out of sight until emptying.
Power and refill details
- Heat sealing mechanism: rechargeable 12v Li-ion battery
- Urine level indicator: 9v battery, not included
- Battery charge: up to 50+ flushes
- Estimated refill cost: $15 to $20 per roll
- Estimated cost per use: about $0.50 per flush
Technical Specs
| Spec | Details |
|---|---|
| Dimensions | 17.0 in D x 15.2 in W x 16.5 in H |
| Solids Container Capacity | 1.5 gallon, 15.7 liter |
| Urine Bottle Capacity | 1.7 gallons, 6.4 liter |
| Weight | Approx. 29 lbs, 13.2 kg |
| Body Material | ABS plastic body |
| Hardware Materials | Stainless steel hinges, waterproof connectors |
| Power for Sealing System | Rechargeable 12v Li-ion battery |
| Power for Urine Level Indicator | 9v battery, not included |
| LED Indicator | Alerts when urine bottle is full |
| Liquid Use Guidance | Up to 20 liquid uses before emptying |
| Operation | No water required |
| Included Starter Supply | One cartridge liner of bags |
Resources and Downloads
- Quick Start Guide - 1 Dry Flush Sealing Toilet (Coming Soon)
Frequently Asked Questions (click to expand)
The S1 uses a built in urine diverter to keep liquid and solid waste separate, so only solid waste is sealed and bagged.
No. The S1 is a water free toilet and does not require water to operate.
The heat sealing mechanism runs on a rechargeable 12v Li-ion battery. The urine level indicator uses a 9v battery, which is not included.
The product information states up to 20 liquid uses before the urine bottle needs to be emptied but it depends how large or small each use is as it's a 1.7-gallon bottle.
The S1 includes one cartridge liner of bags for getting started.
The S1 measures 17.0 inches deep, 15.2 inches wide, and 16.5 inches high, and weighs about 29 pounds.
The product information references compostable bags and recycled plastic bag options.
The stated battery charge lasts for up to 50+ flushes.
Estimated refill cost is $15 to $20 per roll, or about $0.50 per flush.
A two-year warranty on manufacturing defects.























