Karcher HDS 6/15-4 Classic 2175 PSI Hot Water Pressure Cleaner

Pressure Rating (PSI / Bar):
150 Bar (2,175 PSI) working pressure
200 Bar (2,900 PSI) maximum pressure

Flow Rate (L/min):
5 – 10 L/min (300 – 600 L/h)

Power Type:
Electric – Single phase, 230V, 3.6 kW (50 Hz)

Water Temperature:
Hot water – maximum 80°C (inlet 12°C)

Motor Brand and Type:
4-pole electric motor

Pump Type:
Robust crankshaft pump with proven Kärcher quality

Included Accessories:
10 m high-pressure hose
Standard hot water trigger gun
840 mm spray lance
Power nozzle

Application Suitability:
Compact hot water unit designed for daily use across construction, agriculture, automotive, and transport industries. Suitable for removing grease, lubricants, and stubborn dirt efficiently.

Duty Cycle / Usage Class (Light, medium, or heavy-duty use):
Medium to heavy-duty professional use

Mounting / Portability:
Mobile with puncture-proof wheels, robust tubular steel frame, crane lifting point, and accessory storage compartment

Dimensions (L x W x H) (Millimetre):
1075 x 722 x 915 mm

Weight (kg):
108 kg (with accessories)
118 kg (with packaging)

Safety Features:
Thermo and safety valve for machine protection
Pressure switch-off system
Integrated water filter to protect the pump
Efficient burner with low emissions and long service life

Warranty & Service Support:
2 years ( 4 Years when registered online)

The Karcher HDS 6/15-4 Classic Hot Water Pressure Cleaner is a compact, professional hot water machine designed for businesses that need reliable cleaning performance without requiring three-phase power.

Delivering 2,175 PSI (150 Bar) working pressure, up to 2,900 PSI (200 Bar) maximum pressure, and a water flow of up to 10 litres per minute (600 L/h), the HDS 6/15-4 Classic provides an excellent balance of pressure, water flow and heat for everyday commercial cleaning.

Powered by a 3.6 kW, 230 V single-phase electric motor, this machine is particularly well suited to workshops, automotive businesses, agricultural operations, trades and commercial facilities where hot water cleaning is required but three-phase electricity is not available.

Professional Hot Water Cleaning from Single-Phase Power

One of the biggest advantages of the Karcher HDS 6/15-4 Classic is its ability to provide professional hot water cleaning performance from a single-phase 230 V electrical supply.

This makes it a practical option for businesses wanting to step up from a cold water pressure cleaner without installing three-phase power.

With 150 Bar working pressure and up to 10 L/min water flow, the machine provides strong cleaning performance for vehicles, machinery, workshops and general commercial washdown.

Hot Water up to 80°C

The HDS 6/15-4 Classic heats water to a maximum of 80°C, providing significantly improved performance when cleaning grease, oil, lubricants and stubborn contamination.

Hot water helps soften and break down oily residues that can be difficult to remove efficiently with cold water alone.

This makes the machine particularly effective for:

• Mechanical workshops
• Automotive cleaning
• Engines and components
• Agricultural machinery
• Construction equipment
• Commercial vehicles
• Greasy workshop floors
• Plant and equipment
• General commercial washdown

For businesses regularly cleaning oil and grease, hot water can also reduce reliance on detergents and improve overall cleaning efficiency.

Heavy-Duty 4-Pole Electric Motor

The HDS 6/15-4 Classic is powered by a robust 4-pole electric motor designed for dependable professional operation.

The low-speed motor configuration helps support smooth operation and long component life during regular commercial use.

Combined with the crankshaft pump, it provides a durable drive system suitable for businesses that require reliable cleaning performance day after day.

Robust Karcher Crankshaft Pump

At the heart of the machine is a proven Karcher crankshaft high-pressure pump engineered for professional cleaning applications.

The crankshaft design provides dependable pressure delivery and excellent durability, while the integrated water filter helps protect the pump from contamination entering through the water supply.

This straightforward mechanical design makes the Classic range particularly appealing to operators who value reliability, serviceability and long-term performance.

Compact Classic Construction

The HDS 6/15-4 Classic features a strong tubular steel protective frame designed to withstand demanding commercial environments while providing straightforward access to internal components for servicing.

Large puncture-proof wheels improve mobility around workshops, yards and worksites, while the integrated crane lifting point provides additional flexibility for transport and loading.

A dedicated accessory storage compartment helps keep hoses and cleaning equipment organised during daily use.

Efficient Hot Water Operation

The machine incorporates an efficient burner system designed to provide reliable hot water performance with low emissions and long service life.

Its generous 30 litre fuel tank supports extended cleaning periods, reducing downtime associated with frequent refuelling.

For businesses performing regular hot water cleaning, this provides a practical combination of cleaning performance and operating efficiency.

Professional Accessories Included

The Karcher HDS 6/15-4 Classic is supplied with:

• 10 m high-pressure hose
• Professional hot water trigger gun
• 840 mm spray lance
• Power nozzle

This professional accessory package provides a straightforward setup for workshop, vehicle, machinery and commercial cleaning.

Integrated Safety and Machine Protection

The HDS 6/15-4 Classic incorporates several important protection systems, including:

• Pressure switch-off system
• Thermo valve
• Safety valve
• Integrated water filter
• Robust tubular steel protective frame
• Efficient low-emission burner system

These features help protect key components and support dependable operation during regular professional use.

Ideal Applications

The Karcher HDS 6/15-4 Classic is ideal for:

• Mechanical workshops
• Automotive businesses
• Agricultural operations
• Tradespeople
• Construction businesses
• Property maintenance
• Equipment cleaning
• Commercial vehicle cleaning
• Small fleet maintenance
• Plant and machinery cleaning
• Commercial wash bays
• Facility maintenance
• Grease and oil removal
• General professional cleaning

Its combination of 2,175 PSI working pressure, 10 L/min flow, 80°C hot water and single-phase electric power makes it an excellent choice for businesses wanting professional hot water cleaning without stepping up to a three-phase machine.

Why Buy From Hytec Services?

We proudly supply Karcher commercial and industrial pressure cleaners Australia-wide, with ongoing servicing, repairs and maintenance available throughout the Illawarra, South Coast, Southern Highlands, Macarthur, Southern Sydney and surrounding NSW regions. Backed by more than 40 years of industry experience, Hytec Services provides expert advice, genuine spare parts and dependable after-sales support to keep your equipment performing at its best.

As an experienced Karcher dealer and service agent, Hytec Services can assist with machine selection, accessories, spare parts, scheduled maintenance and repairs throughout the working life of your equipment.

For businesses looking for a single-phase professional hot water pressure cleaner that combines compact construction, proven Karcher engineering and reliable grease-cutting performance, the Karcher HDS 6/15-4 Classic is an excellent all-round solution.

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