The Kärcher HDS 9/20-4 M is a powerful middle-class hot water pressure washer designed to deliver outstanding cleaning performance, user comfort, and economical operation in demanding professional environments. Combining advanced heating technology with premium Kärcher engineering, it is ideal for industrial cleaning, transport, workshops, agriculture, and heavy commercial applications.

Powerful Hot Water Cleaning Performance

Delivering up to 200 bar working pressure with a high water flow rate of up to 900 l/h, the HDS 9/20-4 M removes grease, oil, mud, and stubborn contamination quickly and efficiently. Its powerful hot water system significantly improves cleaning results while helping reduce detergent consumption.

Durable 4-Pole Water-Cooled Motor

The machine features a robust low-speed 4-pole water-cooled electric motor paired with a high-quality 3-piston axial pump with ceramic pistons. This professional-grade combination ensures low wear, reliable operation, and long service life under continuous daily use.

eco!efficiency Mode for Reduced Running Costs

Kärcher’s innovative eco!efficiency mode allows the machine to operate at an optimised temperature of 60°C while maintaining full water flow. This reduces fuel consumption and emissions by up to 20% compared to full-load operation, lowering operating costs without sacrificing performance.

EASY!Force Advanced & EASY!Lock Technology

The professional EASY!Force Advanced trigger gun enables fatigue-free operation by using recoil force to assist trigger control. Combined with Kärcher’s EASY!Lock quick-connect system, accessory changes and setup are significantly faster and more convenient than traditional threaded fittings. Pressure and water volume can also be adjusted directly on the Servo Control positioned between the lance and trigger gun.

Advanced Ergonomics & User-Friendly Design

The HDS 9/20-4 M is built with a sophisticated mobility concept including large wheels, ergonomic handles, and integrated accessory storage for practical everyday use. Two integrated detergent tanks allow fast switching between cleaning agents depending on the application.

Built for Professional Reliability

Integrated safety and protection systems help maximise machine lifespan and minimise downtime, including:

• SDS vibration damping system
• Easy-access water filter
• Water shortage and fuel protection
• Safety valve systems
• Efficient “Made in Germany” burner technology

Key Features

• Genuine Kärcher part: 1.071-941.0
• 200 bar working pressure
• Max pressure: 250 bar
• Water flow rate: 450–900 l/h
• Hot water and steam cleaning capability
• Durable 4-pole water-cooled motor
• Robust 3-piston axial pump with ceramic pistons
• eco!efficiency mode for lower fuel consumption
• EASY!Force Advanced trigger gun
• EASY!Lock quick-connect system
• Twin detergent tanks
• Rotating 1050 mm stainless steel lance
• Power supply: 400V 3-phase

Ideal For

• Industrial and manufacturing facilities
• Agriculture and machinery cleaning
• Vehicle and fleet washing
• Workshops and transport depots
• Heavy-duty commercial cleaning applications