With a waste oil furnace from Clean Energy Heating Systems, your business will be cleaner, greener, and hotter than ever before. That's because our advanced furnace technology takes used motor oil, transmission fluid, and other petroleum products out of your businesses' waste stream and turns them into clean, safe, FREE heat for you business. Best of all, thanks to innovations such as highly-efficient heat exchangers, easy-to-clean vertical flue tubes and digital burner technology, our furnaces are setting a new standard for reliability, efficiency and return on investment.