A fluid bed coffee roaster is a type of coffee roaster that uses hot air to roast coffee beans. The beans are placed in a chamber where they are heated by hot air that is circulated through the chamber. This type of roaster is typically used for small batches of coffee, and it produces a consistent and uniform roast. Fluid bed coffee roasters are known for their ability to evenly roast coffee beans, and they produce a very consistent cup of coffee. These roasters are also fairly easy to use, and they are often less expensive than other types of coffee roasters.