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 ...

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 ...

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 ...

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, ...

The MXD-300 ductable waste oil-fired heater pumps out 300,000 BTU to heat even the largest shops. Heavy-duty steel structure with galvanized cabinet provides a rust-free, durable and quiet performance ...

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 ...