Janesville Maker of Waste Oil-Burning Furnaces Continues to Grow

December 23, 2019

(Janesville, WI) Neil Johnson, Gazette

It’s a niche market: waste oil burners that are used to heat buildings. But Rock Energy Systems, a parent company that for years has produced Lanair and Clean Burn furnaces in a plant on Capitol Circle Drive, is now the undisputed waste oil king.