Popcorn machines having fan assemblies and heat sources are described herein. The fan assemblies and the heat sources can be configured to provide heat to unpopped corn kernels to produce popcorn without the use of cooking oil. The popcorn machines can be configured for commercial use and can be mounted onto support structures that allow operators to rotate the popcorn machines. In some embodiments, the operator rotates the popcorn machine about an axis that extends parallel to the rotational axis of the fan assembly. In these embodiments, rotating the popcorn machine while the fan is rotating does not induce substantial stress on the fan assembly due to the rotational inertia of the fan.
