Pressure washer comprising: - a first pump and a first electric motor configured to actuate the first pump, - a second pump and a second electric motor configured to actuate the second pump, where the first pump and the second pump are connected, in parallel to one another, to an inlet duct of a liquid to be pressurised and to a delivery duct of the pressurised liquid, - a dispensing gun of the pressurised liquid fluidically connected to the delivery duct and comprising a trigger movable between a first position, in which the dispensing gun does not dispense pressurised fluid, and a second position, in which the dispensing gun dispenses pressurised fluid, - a first manual selection device that can be actuated in three positions: a first position, in which both of the electric motors (45,60) are turned off, a second position in which only the first electric motor is turned on and the second electric motor is turned off, and a third position in which the first electric motor and the second electric motor are both turned on, characterised by: - a second manual selection device associated with the dispensing gun and able to be actuated between a first position and a second position, - a transmitter device associated with the dispensing gun, operatively connected to the second manual selection device, and configured to emit a predetermined wireless signal when the second manual selection device is in the second position, - a receiver device, - an electronic control apparatus (175,180) operatively connected to the receiver device, and wherein the electronic control apparatus (175,180) is configured, only when the first manual selection device is in the second position, to selectively turn on or turn off the second motor, by-passing the first manual selection device, when the receiver device intercepts the predetermined wireless signal indicative of the presence of the second manual selection device in the second position. - a first pump and a first electric motor configured to actuate the first pump, - a second pump and a second electric motor configured to actuate the second pump, where the first pump and the second pump are connected, in parallel to one another, to an inlet duct of a liquid to be pressurised and to a delivery duct of the pressurised liquid, - a dispensing gun of the pressurised liquid fluidically connected to the delivery duct and comprising a trigger movable between a first position, in which the dispensing gun does not dispense pressurised fluid, and a second position, in which the dispensing gun dispenses pressurised fluid, - a first manual selection device that can be actuated in three positions: a first position, in which both of the electric motors (45,60) are turned off, a second position in which only the first electric motor is turned on and the second electric motor is turned off, and a third position in which the first electric motor and the second electric motor are both turned on, characterised by: - a second manual selection device associated with the dispensing gun and able to be actuated between a first position and a second position, - a transmitter device associated with the dispensing gun, operatively connected to the second manual selection device, and configured to emit a predetermined wireless signal when the second manual selection device is in the second position, - a receiver device, - an electronic control apparatus (175,180) operatively connected to the receiver device, and - a second manual selection device associated with the dispensing gun and able to be actuated between a first position and a second position, - a transmitter device associated with the dispensing gun, operatively connected to the second manual selection device, and configured to emit a predetermined wireless signal when the second manual selection device is in the second position, - a receiver device, - an electronic control apparatus (175,180) operatively connected to the receiver device, and