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Description
Karcher High-pressure cleaner HDS 10/21-4 MThe HDS 10 21 4 M is one of the most powerful hot water high pressure cleaners in the middle class and also impresses with its sophisticated ergonomics and high level of user friendliness. Its low speed, 4 pole and water cooled electric motor, the robust 3 piston axial pump with ceramic piston and the economical eco! efficiency mode simultaneously ensure maximum performance and reliable, economical operation. The energy saving EASY! Force Advanced HP
The HDS 10/21-4 M is one of the most powerful hot water high-pressure cleaners in the middle class and also impresses with its sophisticated ergonomics and high level of user-friendliness. Its low-speed, 4-pole and water-cooled electric motor, the robust 3-piston axial pump with ceramic piston and the economical eco!efficiency mode simultaneously ensure maximum performance and reliable, economical operation. The energy-saving EASY!Force Advanced HP trigger gun with servo control and 1050-millimetre-long spray lance with patented nozzle technology as well as the EASY!Lock quick-release fasteners are also included as standard for fatigue-free and time-saving work. Many other equipment and performance details are also impressive, such as the optimised burner engineering, the 2 detergent tanks, the convenient mobility concept, the extensive safety technology, the simple operation with just one switch or the clever accessory storage options.
Features and benefits
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.
Specifications
Technical data
| 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 |
Scope of supply
- Spray gun: EASY!Force Advanced
- High-pressure hose length: 10 m
- High-pressure hose type: Longlife
- High-pressure hose specification: DN 8, 400 bar
- Spray lance: 1050 mm
- Power nozzle
- Servo Control
Equipment
- Detergent function: 20 + 10 l tank
- ANTI!Twist
- Tanks for detergent, calcification protection and fuel that can be filled from the outside
- Control bar with display light
- Pressure cut-off
- Pole reverse plug (3~)
- 2 Detergent tanks
- Dry-running protection
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.5 ★★★★★
Based on 19 reviews
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Product Reviews
★★★★★ 5
Dog loves them, no rawhide!
My dog is obsessed with these! We have a 70 pound pit mix who is a power chewer and these rolls last forever. He goes crazy for the peanut butter taste and it takes him a couple of days to really destroy one entirely. They are very effective for keeping him busy as the size is massive. I like giving him something so large because he then sets his mind to it for a long time. I like that they have a lot of collagen in them, I can't say I've noticed that his coat is a great deal shinier but it can't hurt! I also like that these are rawhide free. I would say these are a good value as they keep him busy for a good amount of time.
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Reviewed in the United States on January 29, 2026
★★★★★ 5
These are great my dog loved it
Well, I can say one thing I have shepherd. Wolf hybrids, and they are very particular about the stuff they eat. I can give them raw meat, and if it's old, they don't want it, so they're pretty finicky, I hooked them up with these. And they didn't hesitate to go at them. So I wait, I fed half, and then waited a couple of days, they had no negative response to it. That I'm aware of and so I gave him the other one and split it between them, and they don't stop until they're gone. So they pretty much sold themselves for me. If mine My dogs will eat em.They must be okay worth the money in my book.Made my babies happy should get some for yours my dogs are like super chooers.Okay, they have jaws that break bone.So to try to say that these are not good for heavy chewers, I i can't agree with that.Although they won't last very long with heavy chewers, they do great.The dogs love them we only smell was the smell of the product.Kind of a food smell to it.And as soon as I opened the package, the dogs had me surrounded like the sue did old custard, and they weren't letting me go until I shared straight up the male's a hundred plus pounds.And he's eyeballing me like, i'm gonna be lunch.If I don't give him a share, it was funny as hell a great product i think one of the things is the peanut butter.That's in them.My dogs love their peanut butter now.These are almost a foot long each stick, and they're about an inch and a half in diameter.Now they would last for a pretty good time for a normal chew type.DogRottweiler's pit bull saint bernard's high bread.Shepherds, et cetera, anything with a two thousand pound byte is going to tear these things up and have a great time.Doing itThey won't last as long as the dainty chewers and the the comfort chewers, but they'll do the job
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Reviewed in the United States on September 13, 2025
★★★★★ 5
best value I have found.
good bang for the buck.
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Reviewed in the United States on December 22, 2025
★★★★★ 1
Not made for Golden Retrievers.
Nope. Did not last an hour with our Golden Retrievers. We bought these for Christmas hoping to entertain our 2 and 4 year old Goldens while cleaning their teeth. Within an hour they were destroyed.
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Reviewed in the United States on December 26, 2025
★★★★★ 3
Dental health
Not a convenient place to place a treat. Then my dog picked not chewed much. Sturdy. Great for a hard chewer.
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Reviewed in the United States on September 8, 2025