Industrial steam cleaners have a specialized nozzle that propels steam at a high velocity to blast through heavy soils, deep clean porous surfaces, and penetrate into hard-to-reach areas. They heat water in their onboard boiler to make steam, which provides the deepest, most rapid cleaning action when the nozzle is held close to surfaces. Their dry steam creates little to no water runoff, making them suitable for use in areas with delicate surfaces and moisture-sensitive equipment.