Karcher HDS 10/21-4 M 3045 PSI - 16.7L/min Hot Water Pressure Cleaner

Pressure Rating (PSI / Bar):
210 Bar (3,045 PSI) working pressure
240 Bar (3,480 PSI) maximum pressure

Flow Rate (L/min):
8.3 – 16.7 L/min (500 – 1000 L/h)

Power Type:
Electric – 3 Phase, 420V, 8 kW (50 Hz)

Water Temperature:
Hot water – min 80°C, max 155°C (inlet 12°C)

Motor Brand and Type:
4-pole, water-cooled, low-speed electric motor

Pump Type:
Robust 3-piston axial pump with ceramic pistons

Included Accessories:
20 m Longlife high-pressure hose (DN 8, 400 Bar)
EASY!Force Advanced trigger gun
1050 mm rotating stainless steel lance
Power nozzle
Servo Control for water flow and pressure adjustment

Application Suitability:
A top-tier middle-class hot water unit built for intensive industrial and commercial applications. Ideal for construction, automotive, agriculture, transport and manufacturing environments where reliable high-performance cleaning is required.

Duty Cycle / Usage Class (Light, medium, or heavy-duty use):
Heavy-duty, continuous operation

Mounting / Portability:
Jogger mobility design with large rubber-tyred wheels and swivel castors
Push handles and integrated tilting aid for stairs and kerbs
On-board storage for accessories, suction hose and power cord
Dedicated storage compartment for detergents, gloves and tools

Dimensions (L x W x H) (Millimetre):
1300 x 800 x 1140 mm

Weight (kg):
187.5 kg (with accessories)
197.3 kg (incl. packaging)

Safety Features:
Pressure cut-off
Dry-running protection
Two detergent tanks (20 L + 10 L) with external fill points
Stainless steel heating coil
Eco!efficiency mode with optimised burner control for up to 20% fuel savings
Water filter for pump protection
SDS (soft damping system) for vibration and pressure surge absorption
Fuel and water safeguard system

Warranty & Service Support:

2 years (Plus 2 years when registered online)

The HDS 10/21-4 M is one of the most powerful machines in Kärcher’s middle-class hot water range, engineered for exceptional cleaning performance and efficiency. Delivering 210 Bar of working pressure and a flow rate up to 1000 L/h, it easily tackles tough industrial dirt, grease, and grime.

Powered by a 4-pole water-cooled electric motor and a robust 3-piston axial pump with ceramic pistons, it offers long service life and dependable operation. The eco!efficiency mode minimises fuel use without sacrificing performance, while the EASY!Force Advanced trigger gun eliminates holding force, and the EASY!Lock quick-release system enables rapid, secure connections.

The intelligent mobility concept with jogger-style wheels, tilting aid, and push handles makes it easy to move even on rough terrain. On-board accessory storage, dual detergent tanks, and a single-switch control panel make daily use simple and efficient.

Durable, economical, and designed for operator comfort — this model is ideal for professionals who need maximum cleaning power and reliability in harsh working environments.