HOT WATER PRESSURE WASHER HDS Mid Class
Our medium and super class hot water pressure washers are rugged, simple to operate, and feature a unique ECO mode that automatically adjusts to the most economical temperature range.
Our medium and super class hot water pressure washers boast impressive features. They are environmentally friendly and efficient thanks to the Eco mode, a service switch for adjustment of water hardness, turbo fan, precise detergent dosage, optimized burner technology and high pump efficiency. Accessories are optimized for specific applications to suit customer needs. A central, clearly arranged control panel designed for intuitive operation, spray lance holder, and LED displays make this a user-friendly unit. Large rubber-tired wheels, swivel casters, ergonomic push handles, forklift lifting points, lashing rings and a tilting aid provide mobility and easy transport. Flue gas monitoring, a corrosion-proof chassis, machine protector system, and three-piston axial pump with ceramic pistons and heat-resistant flue outlet guarantee safety and reliability, and easy access to components makes this unit service friendly. A service switch can even call up operating data for troubleshooting.
Features and benefits

Economical
In the Eco setting the unit operates in the most economical temperature range (60°C) with full water flow. Burner cycles are optimised to reduce fuel consumption by up to 20% compared to full-load operation.
Operational reliability
The large, integrated fine-mesh water filter reliably protects the high-pressure pump against dirt particles. An integrated exhaust gas thermostat switches off the drive motor if the exhaust gas temperature exceeds 300°C. The soft damping system (SDS) compensates for vibrations and pressure surges in the high-pressure system.
Storage
Storage hooks for power cord and high-pressure hose.Mobility concept
- "Jogger" design with large rubber tyre wheels and swivel castors.
- Integrated tilting aid for effortlessly negotiating obstacles such as steps and kerbs.
Save energy and time: EASY!Force high-pressure guns and EASY!Lock quick-release locks.
- At last – work without getting tired: the EASY!Force high-pressure gun.
- EASY!Lock quick-release locks: durable and robust. And five times faster than screws.
Specifications
Technical data
Flow rate (gal/min) | 2 / 4 |
Pressure (PSI) | 450 - 2000 |
Power (HP) | 9.5 |
Voltage (Ph/V/Hz) | 1 / 220 / 60 |
Connected load (A) | 30 |
Weight without accessories (lbs) | 364.4 |
Ship Weight (with accessories) (lbs) | 407.9 |
Weight incl. packaging (lbs) | 434.4 |
Dimensions (L x W x H) (in) | 52.4 x 29.5 x 41.7 |
Equipment
- Low fuel cut-out
- Exhaust gas temperature limiter
- Stainless steel spray lance, 41 in
- Trigger gun, EASY!Force Advanced
- High-pressure hose, 50 ft
- Infinitely variable pressure and water flow control on the unit
- Pressure switch control
- Integral fuel and detergent tank
- Dry run protection
- Low-speed 4-pole motor
- Steam mode
- Power nozzle
- SDS system
- Scale inhibitor
- Control panel with indicator lamps
- Two detergent tanks








Cleaning application
- Vehicle cleaning
- Workshop cleaning
- Façade cleaning
Accessories
Detergents
Find parts
Find parts & diagrams for your Kärcher cleaning equipment. Select “Find Parts” to begin your search or contact your authorized Kärcher dealer or retailer.

Additional Models
Model
HDS 4.0/20-4M Ea
Part No.
1.071-907.0
GPM
2.0-4.0
PSI
460-2000
HP
8
Electrical
220-240V / 1ph
Amps
28
Pump
Kärcher Axial
Model
HDS 4.5/22-4M Ea
Part No.
1.071-908.0
GPM
2.4-4.5
PSI
460-2250
HP
9.5
Electrical
220-240V / 1ph
Amps
30
Pump
Kärcher Axial
Model
HDS 3.5/30-4M Ea
Part No.
1.071-911.0
GPM
2.0-3.5
PSI
460-3000
HP
9.5
Electrical
220-240V / 1ph
Amps
30
Pump
Kärcher Axial
Model
HDS 3.5/23-4M Eg
Part No.
1.071-906.0
GPM
2.0-3.5
PSI
460-2300
HP
8.1
Electrical
200-208V / 1ph
Amps
30
Pump
Kärcher Axial