Bio-Toilet kit 4 Double

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Dual-unit Bio-Toilet for larger households

Off-grid
No need for sewerage or electricity connection
Users
Up to 50 flushes/day. Ideal for 10 people.
Best fit
Anyone who wants to create a more modern, sanitary, & sustainable bathroom experience.
Renewable Energy
Transforms human waste into free cooking gas & effluent
SKU: 415 Category:
Shipping & import fees
Shipping & import fees

Shipping costs & swift delivery period will be determined at checkout. Taxes & import fees are Read more

Warranty
Returns

We are dedicated to customer satisfaction and offer returns & refunds Read more

Warranty
Warranty

HomeBiogas provides up to 24 months of warranty for all products offered online Read more

Tech Specs

Eco-conscious toilet, minimal environmental impact.

Eco-conscious toilet, minimal environmental impact.

System dimensions assembled

300cm(L) × 145cm(W) × 140cm(H) / 118in(L) × 57in(W) × 55in(H)

Dimensions of the Sitting Bowl

46W/49L/35H (cm) / 18W/19.3L/13.5H in

Gas tank volume

1200 liters / 317 gal

Digester tank volume

3.8 M3

Water usage per flush

1.2 liters / 0.3 gal

Nominal daily effluent output

Up to 60 liters / 16 gal

Max daily input

Up to 50 uses

Max distance from the stove to the HomeBiogas system

Up to 5 meters / 16 ft. -
if the toilet bowl and the HomeBiogas system are at the same height.

Up to 10 meters / 33 ft. -
if there is a 1-meter difference between the toilet bowl and the HomeBiogas system.

How does the Bio-Toilet kit work?

1

Business as usual

“Business” is conducted and then flushed down the toilet

2

Anaerobic digester

Human waste is converted via an anaerobic digestion process

3

Free cooking gas

Biogas is created and accumulates inside the system

4

Off grid mulch basin

Effluent can either run back into an underground drain field or into a mulch basin to grow a beautiful and thriving garden

Bio Toilet

The HomeBiogas Bio Toilet Kit

The HomeBiogas Bio-Toilet Kit is a superior alternative to regular compost toilets. It frees you to live in a self-sustainable manner by turning your Your waste into cooking gas.

What’s in the box?

Innovative, easy-to-install backyard Bio-System HomeBiogas 4

Innovative, easy-to-install backyard Bio-System HomeBiogas 4

Compact bio-digester that converts waste into clean cooking gas on-site

Innovative, easy-to-install backyard Bio-System HomeBiogas 4

Compact bio-digester that converts waste into clean cooking gas on-site

Ceramic Toilet Bowl & Pump Assembly

2 Ceramics Toilet Bowls & Pump Assembly

Premium & Durable toilet bowls, featuring a manual twist-and-lock system for reliability

2 Ceramics Toilet Bowls & Pump Assembly

Premium & Durable toilet bowls, featuring a manual twist-and-lock system for reliability

A Custom Biogas  Stove

A specialized stove designed to efficiently burn the produced biogas, providing a convenient and eco-friendly cooking solution.

A Custom Biogas  Stove

A specialized stove designed to efficiently burn the produced biogas, providing a convenient and eco-friendly cooking solution.

Toilet Seat & Seat Cover + Fittings

2 Toilet Seats & Seat Cover + Fittings

High quality toilet seats and covers with all fitting components for assembly

2 Toilet Seats & Seat Cover + Fittings

High quality toilet seats and covers with all fitting components for assembly

Gas Pipe

Gas Pipe

7m / 23ft for outdoor piping + 3m / 10ft for indoor piping.

Gas Pipe

7m / 23ft for outdoor piping + 3m / 10ft for indoor piping.

Gas Filter

This essential component purifies the biogas, removing impurities and ensuring a clean and safe gas flow for your appliances.

Gas Filter

This essential component purifies the biogas, removing impurities and ensuring a clean and safe gas flow for your appliances.

FAQ’s

  • How does it work?

    It’s very simple: all you need to do is to flush the waste down the Bio-toilet. The waste then goes through the waste pipes into the system, where the anaerobic bacteria break it down into biogas for clean cooking and effluent for further treatment in mulch basin/ septic or sewage. (following local regulation)

  • Do I need to separate waste?

    No, it is not necessary.

  • How many flushes can I feed with?

    Depends on the system you have. Start with 25 flushes for HomeBiogas 2 and up to 75 for HomeBiogas 6.

  • How much water does it take?

    The Bio-toilet takes 1.2L per flush.

  • What are the dimensions of the toilet?

    46W/49L/35H (cm) / 18W/19.3L/13.5H (in)

  • Can I connect to a regular toilet?

    No, both in term of design and water use.

  • Can I add toilet paper?

    Toilet paper is not recommended to be added into the system as it might get stuck in the pipes. You can attach a bidet or use a separate bin for paper.

  • What maintenance do I need to do?

    Once a month you’ll need to lightly lubricate the piston metal rod of the bio-toilet pump. And once in 6 months you’ll need to replace the gaskets.

  • How do I clean my toilet?

    Water, vinegar and ecological cleaners only! Do not use chemicals as it will kill the bacteria.

  • Can I also feed with food waste?

    Food waste and human waste are two separate systems. If you are looking for a solution for the two types you will need two systems.

  • Does it smell?

    One of the greatest advantages of the Bio-Toilet is that it’s odorless.

  • How do I separate urine?

    No need to separate urine! HomeBiogas Bio-toilet is very easy to use and all you need to do is flush your toilet.

  • How hard is it to build the mulch basin?

    Super easy! All you need is a small field, filled with mulch and topped with soil. For the dimensions, please see the Bio-toilet manuals and this installation video.

  • How often is the effluent produced?

    The effluent flows continuously with every flush.

  • How do I treat the effluent?

    There are 3 options to treat the effluent: (1) building an off grid mulch basin or drain field. (2) connecting the system’s outlet to the septic (3) connecting the system’s oulet to the sewage Please note that you’ll need to follow according to your local regulation on any of the 3 options mentioned above. HomeBiogas’s recommendation is 1 – a mulch basin or drain field.

  • Can I use the effluent in my garden?

    The effluent that is released from the system’s outlet requires further treatment and can not be used on edible plants.

  • Where should I install the water heater?

    The water heater should be installed in an open and sheltered area. If you are installing it in a well-ventilated indoor location, we recommend purchasing a 90 mm (3.5 inch) diameter chimney. The chimney should be installed according to local regulations. A general guideline would be an upward slope and a maximum length of 2m.

  • Can I put the Bio-toilet indoors?

    You can put it anywhere you want as long as it is within the right distance from the system?

  • How far can the toilet be from the system?

    If the toilet and system are the same height, then the distance between the two can be up to 5m/16 ft. If the toilet is 1m higher than the distance between the two, the distance can be up to 10m/32ft.

  • Do I need electricity?

    HomeBiogas Bio-toilet is completely off-grid and does not require any electricity.

  • Do I need to secure pressurized water?

    Not at all! all you need is a standing source of water like a bucket.

  • How do I install the toilet?

    Here’s a video to show you just how easily it’s done.

  • Can I activate at 5C/ 41F?

    No, activation needs to be done at a warmer temperature. At least 21C/ 69F.

  • Can I use the system during a freeze?

    We do not recommend using HomeBiogas at or below freezing points.

  • What is the right temperature?

    HomeBiogas loves warmer climates. With that being said, human waste doesn’t require lots of energy to breakdown, therefore a minimum temperature of 41F/ 5C is needed. (gas may not accumulate below 50F, but we do have a solution for that — the HomeBiogas booster kit! )

  • How long does it take for your system to arrive?

    HomeBiogas Products will arrive at your door in up to 3 weeks from your order date.

  • What are the dimensions of the boxes?
    HomeBiogas 4 is shipped in two boxes, please see the dimensions below:
    A: 100x 40x 30, LxWxH [cm]/ 39.4x 15.7x 11.8 LxWxH [in], 15 kg/ 33 lb
    B: 100x40x 32, LxWxH [cm]/ 39.4x 15.7x 11.8 LxWxH [in], 14 kg/ 31 lb
    The toilets are shipped in two separated boxes, please see the dimensions below of one box:
    53x 52x 43, LxWxH [cm]/ 20.9x 20.5x 17 LxWxH [in], 17.2 kg/ 38 lb
  • Will I be asked to pay customs or taxes?

    It depends on your country. HomeBiogas only charges for shipping.

  • Why I can't see my country on your shipping list?

    Please contact us through the contact us form and we will help you make your purchase.

Accessories

How to improve your Bio Toilet experience.

Annual Maintenance Kit
Removes hydrogen sulfide from the biogas generated by the system.
$65.00
Yearly Filter Kit
Removes hydrogen sulfide from the biogas generated by the system.
$29.00
Countertop Biogas Stove (Single Burner)
A custom-designed biogas stove that provides an extra place for cooking
$75.00
Annual Maintenance Kit (Bio-Toilet Service Kit)
Contains essential replacement parts for Bio-Toilet components
$49.00
Built-In Biogas Stove
Empowers your kitchen with more cooking power
$58.00
Probiotic Tablets (Bio-Booster)
A probiotics tablet formulation that increases biogas production and promotes system stability.
$29.00

Reviews

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