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Kärcher K2 vs K3 Pressure Washers: What’s the Difference?

Both the K2 and K3 are popular choices, but they cater to slightly different needs.

Kärcher has long been a trusted name in the world of pressure washers. This article aims to guide users in selecting the right pressure washer for their needs by highlighting the key differences between the K2 and K3 models.

Kärcher K2 vs K3: Quick Answer

The K2 models are more compact and portable, making them ideal for lighter tasks such as cleaning bicycles or garden furniture.

On the other hand, the K3 models, with their higher pressure and flow rate, are designed for more extensive cleaning tasks like decks, cars, and driveways.

Products used in this Kärcher Pressure Washer Comparison

To help you get a good feel for the difference between these models, we’re specifically comparing the following K2 and K3 models:

K 2 HR Pressure Washer

KARCHER K 2 HR | Power Tools
  • General Features: This model is ideal for light dirt around the house. It offers accessory storage on the device, a passive hose reel for neat storage, and is versatile, mobile, and powerful.
  • Technical Specifications: It operates at 220 – 240V/50 – 60Hz, with a max pressure of 12 Megapascal and a flow rate of up to 360 L/h. It weighs 4.951 kg without accessories and measures 266 x 280 x 785 mm.
  • Equipment: Comes with a Quick Connect spray gun, 10-metre high-pressure hose, Vario Power spray lance, Dirt Blaster, and water filter.

K 2 Power Control AU Pressure Washer

KARCHER K 2 Power Control AU | Power Tools
  • General Features: This model offers an application consultant via the app, providing practical tips and advice. It’s suitable for cleaning bicycles, garden tools, or garden furniture. It has a height-adjustable telescopic handle, practical holders for accessories, and a 6-metre hose.
  • Technical Specifications: It operates at 1 Phase/220 – 240V/50 – 60Hz, with a max pressure of 1750 PSI and a flow rate of up to 6 L/min. It weighs 4.102 kg without accessories and measures 246.5 x 280 x 586 mm.
  • Equipment: This model features a spray lance extension, G 120 Q high-pressure gun, Vario Power Jet, Dirt blaster, Quick Connect on the machine, detergent application via suction, and an integrated water filter.

K 3 Pressure Washer

KARCHER K3 | Power Tools
  • General Features: Ideal for cleaning a 25 m²/h area, this model boasts a compact design suitable for cars, pavers, driveways, and decks. It also features a Quick Connect system for easy hose management and a clean tank solution for detergent application.
  • Technical Specifications: It operates at 220 – 240V/50 – 60Hz, with a max pressure of 1950 PSI and a flow rate of 6.3 L/min. It weighs 5.818 kg without accessories and measures 247.5 x 278.9 x 802.5 mm.
  • Equipment: It comes with a Standard Quick Connect high-pressure gun, 8-metre high-pressure hose, Vario Power Jet, Dirt blaster, detergent application via tank, and an integrated water filter.

K 3 Power Control Home Pressure Washer

KARCHER K 3 Power Control Home Pressure Washer | Power Tools
  • General Features: This model offers an application consultant via the app, a clean tank solution for detergent application, a height-adjustable telescopic handle, and an 8-metre hose.
  • Technical Specifications: It operates at 220 – 240V, with a max pressure of 1950 PSI and a flow rate of up to 6.3 L/min. It weighs 4.395 kg without accessories and measures 297 x 281 x 677 mm.
  • Equipment: This model features a T 1 surface cleaner and Patio & Deck detergent, Vario Power Jet, Dirt blaster, 8-metre high-pressure hose, Quick Connect on the machine, detergent application via tank, a detachable cleaning agent tank, and an integrated water filter.

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Factors to Consider When Choosing a Pressure Washer

Power (measured in bar, PSI, or MPa)

Power determines the cleaning efficiency of a pressure washer. A higher pressure means the machine can tackle tougher dirt and stains.

Water Flow Rate (measured in litres per minute)

The flow rate affects how quickly you can clean a surface. A higher flow rate means faster cleaning.

Portability and Size

Consider the balance between a machine’s performance and its ease of storage and transport.

Attachments and Accessories

Different attachments can make specific cleaning tasks easier. It’s worth understanding which ones come with each model.

Kärcher K2 vs K3 Models: Key Differences

Both the K2 and K3 are popular choices, but they cater to slightly different needs.

The K2 and K3 models both offer efficiency and reliability, however, the K3 models are more powerful and suited for heavier tasks, while the K2 models are more portable and ideal for lighter cleaning tasks around the home.

Here’s a breakdown of their key differences:

Purpose and Suitability

Summary: K2 models are more suited for lighter tasks, while K3 models handle more extensive cleaning.

  • K2 Models: Ideal for tasks like cleaning bicycles, garden tools, or garden furniture.
  • K3 Models: Designed for broader tasks such as cleaning cars, pavers, driveways, and decks.

Technical Specifications

Summary: K3 models generally offer higher pressure, flow rate, and power, but K2 models are lighter in weight.

  • Max. Pressure:
    • K2: Up to 12 Megapascal for K 2 HR (Approx. 1740 PSI) and 1750 PSI for K 2 Power Control AU.
    • K3: 1950 PSI.
  • Flow Rate:
    • K2: Maximum of 6 L/min.
    • K3: Slightly higher at 6.3 L/min.
  • Power Rating:
    • K2 Power Control AU: 1.4 kW.
    • K3 Models: 1.7 kW.
  • Weight:
    • K2 Models: Ranges from 4.102 kg to 4.951 kg without accessories.
    • K3 Models: Ranges from 4.395 kg to 5.818 kg without accessories.

Equipment and Features

Summary: K3 models typically have longer hoses and apply detergent via a tank, while K2 models vary in hose length and detergent application methods.

  • Hose Length:
    • K2 Models: Ranges from 6 to 10 metres.
    • K3 Models: Typically 8 metres.
  • Detergent Application:
    • K2 Models: Either through an inlet or suction.
    • K3 Models: Via a tank.
  • Telescopic Handle:
    • K 2 HR: No
    • K2 Power Control AU: Yes
    • K3: No
    • K3 Power Control Home: Yes
  • Hose Storage:
    • K2 Models: Both the K 2 HR and K 2 Power Control AU offer hose storage.
    • K3: Only the K 3 Power Control Home offers hose storage.

Design and Portability

Summary: K2 models are generally more compact and portable, while K3 models, especially the K 3 Power Control Home, are bulkier.

  • K2 Models: Both the K 2 HR and K 2 Power Control AU have a compact design, making them more portable and easier to store.
  • K3 Models: While the K3 model also has a compact design, the K 3 Power Control Home is more bulky.

Kärcher K2 vs K3 Comparison Tables

General Features:

Feature/SpecificationK 2 HRK 2 Power Control AUK 3K 3 Power Control Home
Area Performance (m²/h)202525
Compact DesignYesYesYesNo
Telescopic HandleYesNoYes
BluetoothNoNo
Hose StorageYesYesNoNo
Hose ReelPassiveNoYes

Technical Specifications:

SpecificationK 2 HRK 2 Power Control AUK 3K 3 Power Control Home
Max. Pressure (PSI)Approx. 1740 PSI (Converted from 12 Megapascal)175019501950
Flow Rate (L/min)666.36.3
Power Rating (kW)1.41.71.7
Power Cord (m)555
Weight w/o Accessories (kg)4.9514.1025.8184.395
Dimensions (L x W x H) mm266 x 280 x 785246.5 x 280 x 586247.5 x 278.9 x 802.5297 x 281 x 677

Equipment:

EquipmentK 2 HRK 2 Power Control AUK 3K 3 Power Control Home
High-Pressure GunQuick Connect spray gunG 120 QStandard Quick ConnectG 120 Q Power Control
Hose Length (m)10688
Detergent ApplicationInletSuctionTankTank
Water-Cooled MotorNoNo
Dirt BlasterYesYesYesYes

Conclusion

When choosing between the Kärcher K2 and K3 models, it’s important to understand your specific needs and then decide which model suits you best.

The K2 models are more compact and portable, making them ideal for lighter tasks such as cleaning bicycles or garden furniture.

On the other hand, the K3 models, with their higher pressure and flow rate, are designed for more extensive cleaning tasks like decks, cars, and driveways.

Additionally, while K2 models offer varied hose lengths and detergent application methods, K3 models typically come with longer hoses and apply detergent via a tank.

Consider the balance between portability and power, ensuring you select a model that aligns with your cleaning requirements.

Photo of author

Steve Kropp

Based in Melbourne, Steve's passion is vegetable gardening, and he’s been writing about it for almost 5 years. He also loves all things DIY and is always looking for a new project. When not working on his own garden projects or blogging, Steve enjoys spending time with his family, cooking meals with produce harvested from his garden, and coaching his son’s footy team.

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