A 10 ton oil fired boiler produces high temperature steam through burning oil. It can provide heat energy in a clean and pollution-free manner. The boiler can use light oil, heavy oil, or diesel oil, each requiring different air-fuel ratios and preheating depending on viscosity. Controls systems can automatically adjust the air-fuel ratio and oil input to efficiently operate the boiler using different fuels. The listed 10 ton oil boiler for sale uses modern combustion chamber design, branded burner machines, corrugated furnaces, fire-tubes, wet-back design, and safety devices to offer a horizontal and compact industrial boiler.