Overall: 12.4" W x 20.4" L x 12.6 H. Inner Tank: 11.34" W x 19.21" L x 7.8. Avoid opening the machine when there is no water in the water tank.Use the cleaner in a grounded environment. Do not let the cleaner hang from the cord. Use on a stable level surface. Add water according to the highest water level mark marked on the water tank. The heater in the cleaner is only an auxiliary function and cannot be used as a water heater.