The HDS 10/21-4 M is a user-friendly and powerful hot water high pressure cleaner designed for demanding cleaning applications. Its low-speed, 4-pole, water-cooled electric motor, robust three-piston axial pump with ceramic pistons, and economical eco!efficiency mode deliver outstanding cleaning performance while ensuring reliable and cost-efficient operation. The machine also features two integrated detergent tanks, optimized burner technology, convenient mobility, comprehensive safety systems, and simple operation via a single control switch.
For enhanced comfort and efficiency, the HDS 10/21-4 M comes equipped with an energy-saving EASY!Force Advanced high-pressure trigger gun with servo control, a 1,050 mm spray lance with patented nozzle technology, and EASY!Lock quick-release fasteners. These features reduce operator fatigue and save valuable working time, while the practical accessory storage options keep essential equipment organized and readily accessible.

Features:
High efficiency
In eco!efficiency mode, the machine operates in the most economical temperature range (60 °C) – with full water flow. The burner cycles are optimised to reduce fuel consumption by 20% compared to full load operation.
Wide-ranging accessories with EASY!Lock
EASY!Force Advanced for fatigue-free work without any holding force. Pressure and water volume can be adjusted on the Servo Control controller positioned between the lance and trigger gun. Rotating 1050 mm stainless steel lance.
Maximum efficiency
Highly efficient, tried-and-tested “Made in Germany” burner technology. 4-pole electric motor with 3-piston axial pump. Water-cooled motor for a high performance and long service life.
Operational safety
- Easy-to-access water filter protects the pump against dirt particles in the water.
- Safety valves, water shortage and fuel protection ensure the availability of the machine.
- The Soft Damping System (SDS) compensates for vibrations and pressure peaks in the high-pressure system.
Multiple storage spaces for accessories integrated into the machine
- On-board storage for full range of accessories. Includes 2 hooks for suction hose and power cord.
- Spacious storage compartment, e.g. for detergents, gloves or tools.
Detergent dosing unit
- Easy to switch between detergent tank 1 and 2.
- Precise detergent dosing unit with rinse function.
Mobility concept
- “Jogger” design with large rubber wheels and steering roller.
- Integrated tipping trough for effortless transport over ledges.
- Push handles for simple transport and manoeuvrability.
Easy to use controls
- One switch for all unit functions.
Application areas
- Vehicle cleaning
- Device and machine cleaning
- Workshop cleaning
- Cleaning outdoor spaces
- Service station cleaning
- Façade cleaning
- Swimming pool cleaning
- Cleaning of sports facilities
- Cleaning during production processes
- Cleaning of production facilities
| Number of current phases (Ph) |
3 |
| Voltage (V) |
400 |
| Frequency (Hz) |
50 |
| Flow rate (l/h) |
500-1000 |
| Working pressure (bar/MPa) |
30-210 / 3-21 |
| Temperature (for supply 12 °C) (°C) |
min. 80 – max. 155 |
| Connected load (kW) |
8 |
| Consumption of fuel oil at full load (kg/h) |
7.3 |
| Consumption of heating oil in eco!efficiency mode (kg/h) |
5.8 |
| Power cable (m) |
5 |
| Fuel tank (l) |
25 |
| Weight (with accessories) (kg) |
160.2 |
| Weight incl. packaging (kg) |
170.1 |
| Dimensions (L × W × H) (mm) |
1330 x 750 x 1060 |