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 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 operatively connected to the receiver device , and wherein the electronic control apparatus 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 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 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 operatively connected to the receiver device , and <EOS>