corn burning stove corn burning furnace wood burning stoves CORN BURNING STOVE Pro-Fab Industries Inc. warrants to the original owner of the Empyre Outdoor Wood corn burning stove to be free from defects in the workmanship of the Empyre furnace and all parts manufactured by Pro-Fab Industries Inc. for a period of 3 years from date of manufacture. Pro-Fab Industries Inc. warrants the Stainless steel firebox and water jacket only, to be free from corrosion, and/or defects in the workmanship for a period of 20 years. The warranty is pro-rated.