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BioLet Composting Toilet 55

Save $226.00
Original Price $2,481.00
Current Price $2,255.00

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This BioLet Composting Toilet is the world's first fully automatic composting toilet. It is easy to use and operate, making it an excellent choice for the cottage, basement, barn, pool house, or any other place where you need an easy-to-use and convenient composting toilet. The fully automatic mixing system ensures that your composting process stays on track, while the quiet fan and double heaters keep things running smoothly.

The BioLet 55 is an excellent choice for that extra bit of luxury for any location where a conventional toilet is difficult or impractical to install. Designed with the smaller family in mind the BioLet 55 is the perfect option for those applications where the extra capacity of the BioLet 65e is not needed.

Rated at 3 - 4 people seasonal use the BioLet 55 is an excellent choice for the cottage, basement, barn, pool house or any place where an easy-to-use and convenient composting toilet is wanted.

Equipped with a compost cover which hides any content from view, fan, automatic mixer and double heaters the BioLet 55 is the most convenient composting toilet on the market today. As with all BioLet toilets, the BioLet 55 is easy to install and very easy to maintain.

How does Biolet Work?

diagram showing where the parts of the biolet are

BioLet unites the natural composting process with advanced technology accelerating and optimizing biological decomposition, evaporating excess liquid and exhausting odors… all within an elegant bathroom fixture that is easy to use and economical to operate.

The closed-system BioLet toilets are fully automatic electric toilets that anticipate yourevery move! Sitting on the toilet seat opens the trap doors; closing the toilet seat lid activates the stainless steel mixing mechanism that efficiently breaks down paper and distributes moisture into the compost material in the upper chamber. Material in the upper chamber is finished in the lower chamber and eventually emptied. The BioLet 65 features LED maintenance indicators to let you know when it is time to empty the lower chamber. The non-composted portion and the dry, composted portion are kept separate.

BioLet Composting Toilet 25A

A fan circulates warm air under and around the compost for fast decomposition and evaporation of liquid. A float switch operates an additional bottom heater if excess liquid is detected. Once a week or as needed, mulch is added through the toilet seat opening.

Using energy efficient Swedish technology, electrical consumption is very low with an adjustable power setting, which is adjusted according to the number of people using the toilet. When you are away for more than two days, just turn off your BioLet!

 What comes with the BioLet Composting Toilet?

  • Toilet
  • Installation Packet
  • Bag of Hummus
  • Rake
  • Instructions


  • Dimensions: 25 ½” H x 21 ¾” W x 28” D
  • Seat height: 20”
  • Needed floor space: 22” W x 44” D (Extra space to pull out compost tray in front)
  • Max power: 355W
  • Average daily consumption: 1.5 kWh

Want to know more about BioLet's composting toilet?

OGO Compost Toilet User Manual  CLICK HERE to see the BioLet Composting Toilet user manual for more details about the product and how to use it.   

Q: What makes BioLet composting toilets so efficient?

Answer: BioLet toilets have a patented recirculating air process that provide the maximum amount of air throughout the composting material. The aerobic bacteria, which cause the decomposition, thrive in oxygen rich environments. Feeding more air to these bacteria is just like feeding more air to a fire, it's going to compost hotter and faster.

Q: Is it ok to add urine to a BioLet composting toilet?

Answer: Yes, urine is perfectly ok to add. In the electric models the liquids are evaporated off and the vapors are vented out through the ventilation pipe. With the non-electric BioLet 30NE, all the liquids are separated from the solid waste and drained off through the supplied drain tube.

Q: Can I make my own compost mix?

Answer: Use of only BioLet approved compost mix is recommended. Approved mulches will carry the BioLet logo. Using any other mulch may cause a decrease in the efficiency of your toilet and may void the warranty on mixer parts if their failure is determined to be caused by usage of unapproved mulch.

Q: Will there be odors outside the building?

Answer: A properly installed and maintained composting toilet should not create any more odors than a conventional toilet systems vent pipe. Therefore, there should be no noticeable odors, even outside the building where the toilet is installed.

Q: Is the new waste that is added to the composting toilet mixed with the old waste that is already partially composted?

Answer: No, in all BioLet composting toilets newly deposited human waste and partly decomposed materials are not being mixed together as is done in other composting toilets. This is one of the main reasons that BioLet's end-product is very safe to handle.

Q: What does the term 'automated liquid controls' mean in the BioLet 65 description, and how does it work?

Answer: The automated liquid controls in the BioLet 65 is a combination of a thermostatically controlled heater and a float switch. The thermostat is set manually to maintain the liquids for "normal" usage. In the event that there is additional liquid build up in the tray, the float switch will detect these liquids and force the heater to the next higher setting until the liquids are evaporated.

Q: Does the room temperature need to be maintained at a certain point for the BioLet composting toilet to work?

Answer: During periods while the unit is in use, the ambient room temperature needs to be maintained above 64F. Whenever the unit is not going to be used for more than 2 days, you can let the temperature drop below 64F.

Q: Is there anything that needs to be added to the toilet to help with the composting process?

Answer: Yes, a compost mix is required to promote aerobic decomposition. This mulch is essentially a mixture of peat moss and pine wood shavings combined with carefully selected compost activating ingredients . Addition of 1/2 cup after each fecal use or 1 quart per person per week will provide the proper amount of carbon and bulking agent to achieve optimum composting.

Q: Do you have to see the waste when you look into the toilet?

Answer: No, all BioLet composting toilets are equipped with a compost cover, that hides the human waste from view and opens automatically when sitting on the toilet.

Q: Can I use regular toilet tissue with a BioLet composting toilet?

Answer: Yes, you can! Some toilet papers compost faster than others, but all major brands are ok to use.

Q: Do BioLet composting toilets have problems with worms, flies, or other bugs?

Answer: No, a properly installed and maintained BioLet has no problems with worms, flies, or other bugs. The CO2 emissions produced by the aerobic (oxygen fueled) composting process are a deterrent to bugs. On the other hand, anaerobic (oxygenless) processes found in outhouses and septic systems produce gases which attract these problems.

Still have questions? Don't hesitate to reach out or give us a call at 833-717-1234.

Customer Reviews

Based on 6 reviews
Rylee Stuart
Great improvement to our motorhome

I’m simply in love with the comfort and lightweight style of this toilet. The seal is tight and odor free.

Jayden Reeves
Composts nicely

Comfortable and composts well. Took a while to fit in but we did it with little help.

Jair Collins
Functions perfectly for us on our camp.

There was no smell, no mess, discrete, doesn’t emit odors and easy to clean. Small size, easy to install and no water needed.

Damien Rivera
Comfortable and Attractive

We're a family of four and the toilet works great for us. It's easy to use, easy to clean, easier than cleaning my cats litter box. Overall worth the price.

Beatrice Kay
Good and fast service

I’m remodeling the floor. I can’t wait at the moment I will connect it. Thank you for the quick delivery!

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