Biolet NE


The BioLet NE is an on-site, self contained, biological toilet, where human waste and toilet paper are collected. Excess liquid is recycled through evaporation/transpiration and solid material is decomposed to a soil-like hygienically safe product (humus) without producing any unpleasant odor.

The BioLet NE uses no ELECTRICITY, WATER nor CHEMICALS and requires no hookup to sewer or septic. Just a simple installation of a vent pipe and drain tube and you're ready to go!

The BioLet NE utilizes the natural process of aerobic decomposition. Within a relatively short period of time, human waste and toilet paper are efficiently transformed into a small amount of fertile compost. The BioLet NE reduces the volume of the waste entering the toilet by approximately 90%, leaving only 10% of an end-product, which can be recycled back to NATURE in a safe way without polluting the environment.


A. Ventilation outlet
B. Fan motor/fan blade
C. High temperature limit switch
D. Heating element
1. Phillips screws (top/lower unit)
2. Warm air channels
3. Compost chamber
4. Grate
5. Humus tray
6. Adjustable thermostat
7. Liquid level switch
8. Microswitch9. Mixer motor assembly
10. Shear Pin
11. Compost cover
12. Air return channel
13. Mixer arm
       a. leveling
       b. raking
       c. stationary
14. Front cover for humus tray
15. Fluid level indicator (emptying)
16. Fluid level indicator (humus tray)
17. Bottom heating element
18. Terminal block


Two Composting Containers Inside the BioLet NE are two composting containers. When the first container, under the seat, is filled, it is slid to the back of the toilet for further composting. The second container is now moved to the front. When this container is filled, it is time to dispose of the finished compost in the back container by trenching it into the soil, where the nutrients will be used for new plant growth.Removing The ContainerEmptying The Container

Winter Use
Freezing temperatures will NOT damage the BioLet NE. Composting action decreases but increases quickly when the cottage is again heated. The drain pipe must be well insulated and installed below the frost line in the soil to prevent clogging of the drain.


BioLet NE needs only a minimum of Maintenance:

  1. Simply add 1/2 cup of starter mulch after each fecal use.
  2. When both composting containers are filled, dispose of the humus in the back container by trenching it into the soil.


The BioLet XL is easy to install!

Fasten the BioLet XL to the wall.

Make a hole in the ceiling and roof for the ventilation pipe.

Push the outer pipe into the roof flashing and seal it carefully.

Empty the bag of compost starter into the BioLet.

Plug into grounded outlet.

The BioLet XL is ready to be used.



Drainage System
The BioLet NE doesn't have an electric heater to assist the evaporation of excessive liquid so, it will not fully evaporate the total volume through the vent. Therefore, it's necessary to install a small drainage system unless the excess liquid can be drained into an existing septic or holding tank. An outdoor or indoor soil/planting bed will do or the excess liquid can be collected into a container and later be used to water and fertilize nitrogen-loving plants, or some other methods of disposal as described in the owners manual.
Fluid Drainage
Dilute with 75% water before watering nitrogen-loving plants.





  • 4 - 6 people - full-time use
  • 4 - 6 people part-time use
  • May be increased by the addition of an auxiliary 12VDC ventilation fan.

Weight Limit: 350 lb

Required Room Temperature: 64F during periods while the toilet is in use.

Measurements and Weight:


Shipping Installed
Depth 30" 29"
Width 22.25" 21.5"
Height 27.25" 26"
Seat Height 19.5" 19.5"
Additional depth to remove tray --- 22"
Weight including vent kit and initial starter mulch 72 lb 61 lb

Material: Completely sealed casing of ABS - plastic. Mixing arms and other important metal components of stainless steel.

Warranty: Life-time limited warranty on body, Three year limited warranty on remaining parts.

BioLet Box Includes:
1 - Composting Toilet
2 - Starter Mulch (4 gallon each)
1 - Manual Mixing Rake
4 - Phillips wood screws
1 - 5' x 4" diameter flexible vent hose
1 - 4' section 151mm black vent pipe
1 - 4' section 108mm black vent pipe, belled 1 end
1 - 4' section 108mm black vent pipe, no bell
8' - Styrofoam insulation
1 - 151mm x 108mm reducing coupling
1 - Roof flashing
1 - Drain tube
1 - 2" hose clamp
1 - 6" hose clamp
2 - composting bins
1 - Bin carrying handle
1 - vent cap with insect screening


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