It's so simple, here's how it works.

Air Head composting toilets work by separating liquids from solids.

It has a bowl and an actuator which provides a waterless flush.

Demonstration of Air Heads waterless flush

Demonstration of Air Heads waterless flush

The solid tank will last one month with two people using it full time.

 

Solid container

Solids container with lid and agitator

Solids container with lid and agitator

 

Liquid container

Easily removable liquids container

Easily removable liquids container

The solid matter is separated into the large container which is primed with coir (coconut husk). The coir absorbs any liquid from the solid matter keeping the solid material dry and odourless. The matter is agitated to help the decomposition process.

 

Liquids are collected in the smaller forward tank. Its wide-mouthed aperture will keep the contents emptying smoothly into any standard commode. 

An optional paper bowl liner acts as a carrier for solid matter on its way to the solids tank.

Air head fully sealed toilet pan

Air head fully sealed toilet pan

Odourless

The unit has an integral 12-volt fan that provides a constant negative pressure to pull moisture out of the living space. Even after long lay-ups, there is no holding tank smell when you come aboard.

Capacity

By separating liquids from solids, the volume of solid human matter is significantly reduced. Air Head’s approximate 22 litres capacity means that up to a season’s worth of weekend use may be held. This is approximately 80 uses. Full-time use, 60 uses or two people for 1 month.

The liquid tank will hold approximately four days use per person if used exclusively.  

Holding tank integration

Additionally, the Air Head may be integrated with an existing holding tank system, creating holding capacity for both solids and liquids far beyond what many medium and small boat owners are used to. This is because the tanks take on no flushing water and are free to hold just what they need to.