Reznor's RA-250 and RAD-250 Waste Oil Heater models can be ceiling-suspended or supported above the Reznor Workbench Fuel Tank, forming a practical and convenient waste oil recycling center. Both models are rated for 250,000 BTU input. The models also feature an air atomizing burner; a quiet, on-board air compressor; positive displacement fuel metering pump; and an automatic thermostat-controlled operation.