Agriculture
January 2, 2024
The TFP Composting Toilet
Read SolutionImplemented by
Toilets for People
Updated on August 13, 2024
·Created on August 28, 2017
The Sun-Mar Excel NE Composting Toilet is a dry composting system.
The Sun-Mar Excel NE is a self-contained composting dry toilet made for off the grid circumstances. The excreta is dried/evaporated and composted within the units’ 3-chambered drum for continuous composting. It is sized for household use.
Target SDGs
SDG 6: Clean Water and Sanitation
Market Suggested Retail Price
$1,765.00
Target Users (Target Impact Group)
Household
Distributors / Implementing Organizations
Sun-Mar sells online and has distributors all over North America and internationally.
Competitive Landscape
Direct competitors include SavvyLoo, Ecodry Urine-Diverting Dry Toilet, and Separett Villa 9000.
Intellectural Property Type
Patent
User Provision Model
Direct sales, online and in-stores
Distributions to Date Status
Unknown
Toilet type
Toilet
Evacuation method
Dry
Storage conditions
Container-based storage
Capacity (L)
Unknown
Time until emptying
Unknown
Design Specifications
The toilet is self-contained, made of plastic, and has three chambers for different stages in the composting process (composting chamber, evaporation chamber, finishing chamber). A manually driven drum rotates the chambers and mixes the compost material. The toilet is made for use by two adults or families of three in permanent housing. Aerobic breakdown is used in the composting process.
The 3-chambered drum is patented by Sun-Mar and can be moved with a handle. The compost is manually emptied by the user.
Technical Support
The user is responsible for service and maintainence of the product but the manufacturer offers a manual, FAQs and call support.
Replacement Components
Replacement components can be ordered via the Sun-Mar webshop or found at other retailers.
Lifecycle
Sun-Mar has a 5 year warranty on the fibre glass tank and a 3 year warranty on all other parts.
Manufacturer Specified Performance Parameters
The manufacturer states odorless, easy to use, quick to install, and no pollutants or chemicals released to the environment as important performance targets of the toilet.
Vetted Performance Status
The tests done for NSF (National Sanitation Foundation) certification demanded that the toilet fulfilled the criteria for odors, bacterial levels and could handle the stated capacity for an extended period plus occasional overload.
Safety
No safety issues related to the product, when properly handled.
Complementary Technical Systems
12 Volt fan and a solar panel.
Academic Research and References
None
Compliance with regulations
Sun Mar is NSF certified for liquid containment, odors, and solid end products. This standard is the National Sanitation Foundation NSF/ANSI standard nr 41, 2005.
Evaluation methods
To become NSF (National Sanitation Foundation) certified the toilet had to meet the following six requirements: “The toilet system can handle the stated capacity for an extended period plus occasional overload; The toilet system has no offensive odors; The composted output has been demonstrated to meet required bacterial content levels; Advertising, literature and labeling are not misleading; Products undergoing testing are not accessible to the manufacturer; Lab test results are confirmed by parallel testing of toilet systems operating in the field.”
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