Skip to content

BioLet Composting Toilet 55a (Newest Edition)

by BioLet
+ FREE Shipping!

In Stock ✓

Delivery in under 2 weeks when you order by 2:00 pm today

Need help? Ask our specialists:

Save on your first order — Use code NEWBIE2022 at checkout! 🛒

Overview — BioLet Composting Toilet 25a

BioLet 25a

The all new BioLet 25a is the world's first fully automatic composting toilet. In our quest to provide our customers with a toilet that is as convenient to use and operate as a regular flush toilet, a fully automatic mixing system has been added in addition to the quiet fan, compost covers and double heaters.

The BioLet 25a 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 25a 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 25a 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 25a is the most convenient composting toilet on the market today. As with all BioLet toilets, the BioLet 25a is easy to install and very easy to maintain.

Technical specifications:

  • 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

How does Biolet Work?

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.

diagram showing where the parts of the biolet are

The closed-system BioLet toilets are fully automatic electric toilets that anticipate your every 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.

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!

Resources — BioLet Composting Toilet 25a

Documents — BioLet Composting Toilet 25a

📙 Product Manual

Videos — BioLet Composting Toilet 25a

📽️ BioLet Overview

🛠️ BioLet Installation

Warranty — BioLet Composting Toilet 25a

OffGrid Harbor is an Authorized Biolet Dealer

Includes all applicable Manufacterer Warranties

Ships direct from manufacterer

Additional Lifetime support from our specialists

Features — BioLet Composting Toilet 25a

  • Easy to Clean
  • Made from durable polished polystyrene ABS plastic
  • Smooth design; no crevices or hard-to-clean areas
  • Removable toilet seat for extremely easy cleaning
  • Equipped with a compost cover that hides toilet contents
  • If used seasonally, empty the humus tray only once a year

    FAQs — BioLet Composting Toilet 25a

    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.

    Customer Reviews

    No reviews yet

    Customer Reviews

    No reviews yet