Kärcher K4 pressure washer Upright Electric 420 l/h Black, Yellow

The Kärcher K4 upright electric pressure washer delivers a balanced combination of cleaning power and practical design for regular domestic use. With an upright form factor and electric power source, it provides a maximum flow rate of 420 l/h and a working pressure up to 130 bar. The unit accepts inlet water temperatures up to 40 °C and operates on standard 220–240 V, 50/60 Hz mains with a connected load of 1800 W. Its compact footprint (width 346 mm, depth 302 mm, height 849 mm) and a 6 m hose make it suitable for garden and patio cleaning, vehicle washing and other outdoor maintenance tasks.

Advantages

The Kärcher K4 combines a high working pressure with a steady maximum flow rate to remove stubborn dirt while keeping water consumption moderate. Electric operation ensures quiet and emissions-free use suitable for residential areas. The 6 m hose and upright design simplify handling and storage, and the faucet-tolerant construction allows connection to typical household water supplies. The unit’s compact dimensions make positioning and transport easier without compromising on performance.

Suitable for

• Cleaning patios, driveways and decking
• Washing cars, bicycles and small boats
• Removing moss, algae and light paint residues from outdoor surfaces
• Routine maintenance of garden furniture and tools

Key specifications

• Form factor: Upright pressure washer
• Power source: Electric (AC 220–240 V, 50/60 Hz)
• Connected load: 1800 W
• Maximum flow rate: 420 l/h
• Maximum working pressure: 130 bar
• Maximum input water temperature: 40 °C
• Hose length: 6 m
• Dimensions (W×D×H): 346 × 302 × 849 mm

How to use

Connect the pressure washer to a suitable mains supply (220–240 V, 50/60 Hz) and attach the water inlet hose to a cold water tap ensuring any supplied filters or adapters are fitted. Turn on the water supply and release air from the system by briefly running the unit before applying cleaning to surfaces. Select an appropriate nozzle or accessory for the task and maintain a safe distance while working, adjusting pressure by changing nozzle type or working angle. After use, switch off the machine, turn off the water supply, and depress the trigger to relieve residual pressure before disconnecting hoses and storing the unit in a dry place.

Usage recommendations

Use the Kärcher K4 with accessories and nozzles rated for up to 130 bar and always observe maximum inlet water temperature of 40 °C. For painted or delicate surfaces, use a wider spray angle and keep the nozzle further from the surface. For stubborn dirt, pre-treat with a suitable detergent and rinse thoroughly. Regularly check hoses and connections for wear and store the unit protected from freezing temperatures.