Waterless Incineration Toilet




SR5(Propane, Natural Gas): for 4-5 people

SR12(Propane, Natural Gas): for 8-10 people

SR12(Diesel Oil): for 8-10 people

The SR series include environmentally friendly incinerating toilets that lead the way in the waterless disposal of waste. It was developed to solve economical and logistical problems in remote waste handling applications; in such applications, there may not be any available sewage systems; septic tanks may not be allowed; or it is simply expensive or difficult to install a standard water flushing toilet. Every model is waterless self-contained toilet that incinerates the waste into a sterile ash that needs to be emptied periodically.

SR5 – 4 people full time; cabin, summer house, lower capacity usage areas
SR12 – 8-10 people full time; residential and smaller commercial applications – oil rigs, construction sites, camps, military, refugee camps, disaster relief, house boats etc.

– Waterless incinerating toilet
– Currently 2 different sizes: SR5 and SR12 models
– Propane, natural gas and diesel fueled
– 12V DC, 120V AC, and 240V AC
– Leaves minimal residue (sterile ashes)
– Residential and commercial applications
– Easy operating display panel with 2 flush buttons
– Commences incineration process immediately after flushing the toilet – no effluent stays in the burn chamber non-incinerated
– Equipped with small water reservoir for cleaning purposes
– Allows multiple usages in a row
– Bowl liners may be used
– Circuit board that controls burn cycles and operation

– Catalytic converter and draft fan may be used
– Urine cycle 5-10 minutes
– Waste cycle 35-40 minutes
– May be used during incineration process. Burner shuts down if toilet lid opens
– Included 6″ double wall vent pipe removes harmless resultants steam
– Withstand harsh environments
– Meets emission regulations
– Operates in cold climate and high altitude

19 Waterless Incinerating Toilet


After the toilet has been used, all waste material and paper gets moved into the burn chamber by an auger. The incineration process continues until all of the waste material is gone. This process takes about 5-10 minutes for a short cycle (liquid waste) and 35- 40 minutes for long cycle.

The SR5 models use propane, and the SR12 models run on propane, natural gas, or diesel. In addition 12V DC, 120V AC, or 240V AC is required. The electricity is required to run the auger and commence the burn cycles.

The toilets have a built in circuit board that monitors the operations and will let the user know if the burn cycles have completed, max capacity, or if there are any error i.e. out of fuel.


Given that the toilet is a completely self contained, the installation process is straight forward and can be done by a general contractor. Once the included chimney system has been installed through the roof or out through the wall with an elbow, the fuel line and power source can be connected. Following connecting the power, and checking for any fuel leaks as per directions in the owner’s manual, one can start to use the toilet.

  • Completely self-contained. No need to install any separate tanks (except fuel)
  • Must be installed inside a weather proof building/structure
  • Requires 5 inches clearance from any wall
  • 1 ft clearance is recommended behind the toilet in order to access the burn chamber clean out port
  • Should not be installed or operated in an area where there is a risk of an accumulation of flammable vapors or dust
  • The chimney has to be a minimum of 7 ft long
  • The chimney can be vented out through the side wall using elbows
  • If the toilet has to be left for a certain time, simply shut down the power and turn off the power.




Periodically, the burn chamber needs to be emptied of sterile ash. Cleaning of ashes can be done from the outside of the toilet; a special cleaning lid and cap to the burn chamber can be accessed from the back of the unit. A standard ShopVac is recommended to use to vacuum the ashes.

The toilets are all equipped with a small water reservoir of about 1 quart of water. By pushing a rinse button, water rinses the bowl and auger. In addition, bowl liners may be used.  As an option, a catalytic converter with a fan that cleans the outgoing air is also available for the SR5.

Technical Info

SR12 SR12
Propane, Natural Gas Diesel
Operating Voltage
12V DC, 120V AC, 240V AC
12V DC, 120V AC, 240V AC 12V DC, 120V AC, 240V AC
Hourly Btu Input
18,000 Btu/hr
50,000 Btu/hr 70,000 Btu/hr
Operation: -35 to 140 F
Operation: -35 to 140 F Operation: -35 to 140 F
Polypropylene Plastic
Galvanized Steel Galvanized Steel
Electrical Load
12V DC: 2-3 Amp/hr
120V AC: 0.2-0.4 Amp/hr
12V DC: 11-12 Amp/hr
120V AC: 3-4 Amp/hr
12V DC: 11-12 Amp/hr
120V AC: 3-4 Amp/hr
Propane Consumption
Urine Cycle: 0.14 lbs/cycle
Waste Cycle: 0.35 lbs/cycle
Urine Cycle: 0.14 lbs/cycle
Waste Cycle: 0.35 lbs/cycle
Natural Gas Consumption
Urine Cycle: 0.04 therm/cycle
Waste Cycle: 0.1 therm/cycle
Diesel Consumption
Urine Cycle: 0.03 gal/cycle
Waste Cycle: 0.08 gal/cycle
Height 28″ 32″ 44″
Width 23″ 25″ 25″
Depth 38″ 39″ 42″
Sitting Depth 19″ 20″ 21″
Weight 132 lbs 220 lbs 250 lbs;

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