I read with interest and some concern the letter from Mary Hammersmith in the February/March 2004 issue regarding the waste oil heater from the September/October 1978 issue. I helped build that heater ...

Oct. 10—JANESVILLE — A Janesville-born company that for years has been the nation's biggest player in waste-oil-burning furnaces is now owned by a St. Louis private equity firm. Rock Energy Systems, ...

Why have your used engine oil hauled away when you can use it to heat your shop? Used engine oil is a terrific fuel, closely resembling No. 2 diesel fuel and furnace oil – except that it actually ...

Models RA-250 and RAD-250 waste oil heaters have been added to the extensive line of products specifically designed for recycling used oils to produce free shop heat. The Model RA is a standard unit ...

Clean Burn is the world's leading producer of waste oil heater products that include waste oil furnaces, waste oil boilers, and used oil recycling centers that generate FREE HEAT from motor oils and ...

Reznor has added Models RA-250 and RAD-250 waste oil heaters to its line of products designed for recycling used oils into free shop heat. The Model RA is a standard unit space heater while the Model ...

In the research and development area of Rock Energy Systems’ plant in Janesville, company CEO Barry Brandt watched a blowtorch-like orange flame through a porthole on one of the large waste ...