The Collaborative International Dictionary of English v.0.48:
Distiller \Dis*till"er\, n. 1. One who distills; esp., one who extracts alcoholic liquors by distillation. [1913 Webster] 2. The condenser of a distilling apparatus. [1913 Webster]WordNet (r) 3.0 (2006):
distiller n 1: someone who distills alcoholic liquors