Karcher HDS 7/10-4 M Professional Hot Water Pressure Washer 100 Bar
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Karcher HDS 7/10-4 M Professional Hot Water Pressure Washer 100 Bar
The Kärcher HDS 7/10-4 M is a professional single-phase hot water pressure washer designed for demanding commercial cleaning applications. Operating at up to 100 bar with adjustable pressure from 30 to 100 bar, this middle-class machine delivers exceptional cleaning performance for contractors and facilities requiring reliable hot water cleaning capability. The unit combines a robust 3-piston axial pump with ceramic pistons, a water-cooled 4-pole electric motor, and optimised burner technology to provide efficient and dependable operation.
Built for intensive professional use, the HDS 7/10-4 M features an economical eco!efficiency mode that reduces heating oil consumption to 3.8 kg/h whilst maintaining effective cleaning performance. The machine can heat water to temperatures between 80°C and 155°C (from a 12°C supply), making it ideal for removing grease, oil, and stubborn contaminants in workshops, garages, industrial facilities, and agricultural environments. Two integrated detergent tanks with a precise dosing unit allow quick switching between cleaning solutions, whilst the rinse function ensures thorough system maintenance.
Ergonomics and user comfort have been prioritised throughout the design. The EASY!Force Advanced trigger gun with servo control significantly reduces operator fatigue during extended cleaning sessions, whilst the 1050mm stainless steel spray lance with patented nozzle technology provides excellent reach and control. A comprehensive mobility system features large rubber wheels, a steering roller, and integrated tipping trough for effortless transport across job sites and over obstacles.
Safety and reliability are ensured through multiple protection systems including an accessible water filter to protect the pump from debris, safety valves, water shortage protection, and fuel protection. The Soft Damping System (SDS) compensates for vibration and pressure peaks, extending component life. Intuitive single-switch operation controls all main functions, whilst generous on-board storage includes hooks for the suction hose and power cable, plus a spacious compartment for detergents and cleaning accessories.
Please Note some of the images show the machine with an optional hose reel fitted: this is not supplied as standard with this model but is available separately.
Features and Benefits:
• Single-phase 230/240V operation suitable for standard UK electrical supplies
• Variable flow rate from 350 to 700 litres per hour for versatile cleaning applications
• EASY!Force Advanced trigger gun with servo control reduces operator fatigue
• Dual detergent tanks with easy switching and precise dosing for efficient chemical use
• Eco!efficiency mode reduces fuel consumption whilst maintaining cleaning effectiveness
• Water-cooled 4-pole motor ensures reliable continuous operation
• 10-metre Longlife high-pressure hose provides excellent working radius
• EASY!Lock quick-release fasteners enable rapid accessory changes
• Comprehensive safety systems protect machine from damage and ensure availability
• Ergonomic storage solutions keep all accessories organised and accessible
Specifications:
Spray lance: 1050 mm
Number of current phases (Ph): 1
Voltage (V): 230 / 240
Frequency (Hz): 50
Flow Rate (l/h): 350 - 700
Operating pressure (bar/MPa): 30 - 100 / 3 - 10
Max. Pressure (bar): 145
Temperature (supply 12°C) (°C): min. 80 - max. 155
Power rating (kW): 3
Heating oil consumption ( 60°C) / eco!efficiency mode (kg/h): 4.6
Heating oil consumption, eco!efficiency (kg/h): 3.8
Power cable (m): 5
Nozzle size: 025
Fuel tank (l): 25
Weight (with accessories) (kg): 182.5
Weight incl. packaging (kg): 192.3
Dimensions (L × W × H) (mm): 1300 x 800 x 1140
Contents:
Trigger gun: EASY!Force Advanced
High-pressure hose length: 10 m
High-pressure hose type: Longlife
High-pressure hose
Pressure Washer Help
To help determine the type of pressure washer required it is important to consider the size of your cleaning task and level of duty, i.e. how big is the cleaning object and how often will you need to clean it? Below is an explanation of the two main types of pressure washer. Whilst bar pressure is important the overriding factor in cleaning power is the water flow rate. More water = better cleaning.
Jargon Buster:
• Bar or PSI: Bar is the most common measure of pressure. PSI = bar x 14.5.
• Bar (max): This is the pressure achieved when the machine is first turned on
• Bar (rated) pressure: This is the operating water pressure of the machine.
• Motor size (kW): Motor size indicates power providing the machine runs efficiently.
• Flow Rate (l/h): Higher flow rates enable you to clean large areas or objects faster
Did You Know:
Pressure Washers use up to 80% less water than garden hosepipes.
Pressure Washers are not subject to hosepipe bans if used for safety reasons, or if a suction hose is used to pull water from a harvested source. i.e. not the water mains. They are also not subject to a ban if used for commercial reasons, for example to maintain cleanliness, hygiene or company image.
Important things to remember when using your pressure washer:
• Always use an RCD when using electrical products in connection with water.
• Never use a non-return valve at the pressure washer connection to a hose pipe.
• Never drive over or lay items on high pressure hoses to avoid damage.
• Your water supply hose should be a min of several meters long and unwound from its reel.
• If you are using an extension lead, check that it is rated at min of 13 amps and fully unwound from its reel.
Specifications
More Help
If you require more information or assistance with this product please consult the links below :
There is a Karcher Pro manufacturer warranty for this product which covers all manufacturing defects for the normal lifetime of the tool but does not cover wear and tear or damaged cause by misuse. This does not affect your statutory rights. For more details see <a href='/karcher-professional-warranty/warranty/126/' style='margin: 0; padding: 0;'><strong>Karcher Professional Warranty</strong></a>.