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The Karcher HD 10/21-4 S Plus Cold Water Pressure Washer – also known as the Kärcher HD10/21-4 S Plus and Karcher HD1021-4 S Plus – delivers exceptional commercial-grade cleaning power with a compact upright design. As part of Kärcher’s Super Class cold water range, this machine is engineered for intensive daily use where high pressure, reliability and ergonomics are essential.
Built with a robust 4-pole low-speed motor, the Karcher HD 10/21-4 S Plus Cold Water Pressure Washer provides an impressive 210 bar of pressure while maintaining long service life and reduced operating noise. The EASY!Force trigger and EASY!Lock fittings ensure comfortable, fatigue-free operation and ultra-quick setup on busy workdays.
Designed for tough cleaning demands in agriculture, construction, transport and industrial settings, the Karcher HD 10/21-4 S Plus includes a high-performance dirt blaster nozzle for maximum impact on stubborn grime. Its upright trolley design improves manoeuvrability, and onboard accessory storage keeps workflow efficient.
Why should I buy a Karcher HD 10/21-4 S Plus Cold Water Pressure Washer?
If you need a heavy-duty cold water solution capable of intensive daily cleaning, the Karcher HD 10/21-4 S Plus stands out for its durability, power and operator comfort. It offers professional-level cleaning results in a practical, easy-to-use format backed by Kärcher’s renowned engineering.
Product Key Features
- High-pressure performance – delivers up to 210 bar for demanding industrial and commercial cleaning.
- Durable 4-pole motor – low-speed, long-life motor built for continuous heavy-duty use.
- EASY!Force trigger – reduces operator fatigue for improved comfort during prolonged cleaning.
- EASY!Lock fittings – enables rapid setup and tool-free connection of accessories.
- Upright ergonomic design – easier manoeuvrability on uneven surfaces and compact storage.
- Detergent application capable – allows detergent suction for enhanced cleaning on grease and heavy soiling.
- Dirt blaster nozzle included – maximises impact for removing stubborn and ingrained dirt.
Accessories Included
- Karcher EASY!Lock High Pressure Hose - 10 Metres
- Karcher EASY!Force Advanced High Pressure Trigger Gun
- Karcher Servo Pressure Control
- Karcher EASY!Lock Spray Lance - 1050mm
- Karcher EASY!Lock Power Nozzle
- Karcher EASY!Lock Nozzle Nut & Protector
- Karcher EASY!Lock Dirtblaster Nozzle
- 1" Hose Stub Connector
| Pump Specifications | |
| Water Flow Rate | 1002 Litres / Hour |
| Operating Pressure | 230 Bar |
| Max. Pressure | 250 Bar |
| Variable Pressure | Yes |
| Detergent System | None |
| Pressure Adjustment | Servo Controller on gun/lance |
| Max. Water Feed Temperature | 60° C |
| Power Specifications | |
| Motor Type | 4-Pole Air/Water Cooled Induction Motor |
| Powered By | 420 Volt Mains |
| Power Rating | 8.0 kW |
| Cable Length | 5 Metres |
- Availability: 1
- Weight: 86.18kg
- Dimensions: 1,194.00mm x 623.00mm x 570.00mm
- Part No.: 1.286-958.0
- Barcode: 4054278915487







































