Always read the installation instructions and plan the installation before making any cuts in the composter, your building, or the exhaust pipes. To provide more flexibility in locating the pipe (to permit alignment of the toilet-connecting pipe and/or the compost removal door), use flexible synthetic rubber no-hub connectors as unions to facilitate servicing and repairs. They will also serve as vibration-absorbers that reduce noise from fan motors.

Note: In the Carousel, the air-intake opening is in the center of the composter lid, and it might be covered with a plastic cap, which should be removed. Consider connecting a hot-air supply duct to the air-intake opening to provide warmed air to the composter. Or you can simply cover it with a tube made from rolled-up fly screen.