If you cannot find a plumber to do the installation and want it to be installed according to best plumbing and mechanical practices, you could go to your library and browse through the Uniform Plumbing Code (UPC) published by the International Association of Plumbing and Mechanical Officials. The UPC has been adopted by many states in the United States and even such faraway places as the Republic of Palau in the South Pacific. Although the code itself is instructive, the illustrated Training Manual is rich with information and provides pictures and diagrams to illustrate all plumbing work, including the exhaust venting, drainage, and piping requirement that would apply to a composter installation.

Many installation considerations are the same as those for hot water heaters, furnaces, and boilers. That is because many fundamental issues are the same, such as location, support, length, pitch, rise, and clearance of pipes and vent components, methods of supplying make-up air, distances of the access opening above grade (18 in. or 457 mm, for example), seismic bracing, roof flashing techniques, use of flexible pipe, unions, and where the end of the exhaust pipe with a vent cap should be relative to open windows and so forth.