The Sivetz Air roaster is simply the most respected coffee roasting design in the world.
The Sivetz Air Roaster provides the finest roast because of it's ability to roast uniformly; Degree of roast thermocouple; efficient heat transference; bean turbulence cleaning debris from bean surface; and shortened roast time. Most drum roasters today introduce hot air into their roast chamber, then the beans tumble and touch the hot surfaces to roast, like clothing in a clothes dryer. The Sivetz system levitates the beans on a fluidized bed of hot air, keeping the beans moving and not scorching on hot surfaces. The sole use of hot air greatly increases the rate of heat transference to the beans, creating a cleaner, more aromatic roast free of bitter tasting tars.