Karcher HD 10/21-4 S
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Karcher HD 10/21-4 S | |||||||||||||||||||||||||
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This pressure washer will save time and effort when cleaning dirty surfaces. Excellent performance and solid reliability make it easy to remove any blockages, even dried and well curled. This model works with a pressure in the range of 30-230 bar, while creating a water pressure of 1000 l / h. This level of performance allows you to use the device for cleaning industrial premises, various machinery and equipment.
The high pressure washer Karcher HD 10/21-4 S is equipped with a powerful 8000 W 3-phase motor. For the operation of such a device, a 400 V power supply is required. In return, the device offers good pressure and maximum stability. Such a device will easily pull many hours of cleaning sessions without long stops. Warm water can be supplied to the pump inlet, heating up to 60 °C. A built-in filter is provided, so that water can be taken from both the pipeline and the tank. This model has a built-in detergent tank. Additionally, it is possible to collect cleaning chemicals from a third-party tank. The Easy-Press spray gun softens the pressure recoil, allowing you to press the trigger and hold the mechanism effortlessly. A pressure washer will make cleaning as effective as possible!
Always clarify the specifications and configuration of the product with the online store manager before purchasing.
Catalog Karcher 2025 - new arrivals, bestsellers, and the most relevant models Karcher.


Powerful and very reliable! Works all day without significant breaks and without problems. Oil cooling, two tanks for detergents at once. And at the same time, it is quite compact and not too heavy. Well, except that the length of the high-pressure hose is disappointing - it could have been longer. But it's not fatal at all. ![]() |
Our company is engaged in the production of synthetic detergents. We produce both liquid forms and powders. The production of bulk forms, despite compliance with the regulations and labor protection standards, is a very dusty process. Moreover, this dust is the same washing powder that is used in automatic washing machines. It settles in a thick layer not only in industrial premises, but also constantly appears in administrative and utility rooms. It was for her cleaning that this powerful high-pressure washer was bought. This apparatus can provide an operating pressure of 210 bar, which is equivalent to the pressure of a water column 2100 meters high. Just a fantastic value, which allows you to form a jet with wild pressure and the same wild washing power. You need to use such energy wisely and carefully, such a force at close range can severely injure a person’s skin (of course, I didn’t try it myself, but I watched the video on youtube). But for washing industrial structures and premises, such pressure is a big and fat plus. We process metal structures, concrete, thick-sheet polymeric materials, for example, linoleum (thin-sheet jet tears to shreds). The jet is regulated by a nozzle nozzle and can also be turned into a fan or an expanding cone. It washes away the ubiquitous dust from any, the most distant corners. The device itself is well made and well made. Outside, there is thick impact-resistant plastic and convenient connectors, and inside there is a high-pressure ceramic-metal pump that can work for more than one hundred hours. High power implies operation only from a three-phase current network with a voltage of 380-400 volts, so there was simply not enough electric cable in some places. Electricians made a special extension cord. |
Recommend! The device is great. It has been working for more than 3 years. Only 2 breakdowns. Self-maintenance: oil refill and filter cleaning. Replaced the high-pressure hose 4 times. + Powerful pressure. + Sturdy body. Worth its money. Vaga. Wipe the sleeves. ![]() |
- Air/water cooled engine
- Hose twist protection
- Spray tube length — 105 cm
I'd buy one for home without a second thought!
It's just that the price is definitely not "home-friendly" :)
But it's understandable - it's a professional item.