A high-pressure washer's "power" from Bosch is typically described byits motor's wattage (W) and the maximum pressure (bar).it deliversFor example, a common professional model, the Bosch GHP 5-13 C, has a 2300W motor and a 140 bar maximum pressure, while DIY models like the Universal Aquatak 130 have a 1700W motor and 130 bar maximum pressure.