Kärcher K4 Home Water-Cooled Pressure Washer Review

About The Karcher K4 Home Pressure Washer

Karcher K4 home pressure washer review clean property home dirt
Make your property shine with the Karcher K4 Home Pressure Washer

The Karcher K4 is a more powerful unit than the Karcher K2 pressure washer models and is suitable for medium sized domestic jobs such as cleaning driveways and walls etc. The K4 Home has more features than the K2 and comes with a greater range of attachments.

It is important to note that the Karcher K4 Home and the Karcher K4 have the exact same specification however the Karcher K4 Home comes with the T350 Patio Cleaner.

Each Karcher pressure washer is teasted individually before allowing to leave the factory.

Karcher K4 Features and Specifications

The Specifications of the K4 are as follows;

  • 130 Bar Pressure
  • 420l Waterflow p/h
  • 1800 Watts
  • 6m Hose

You can see that each specification is larger than that of the Karcher K2 which makes the K4 Home ideal for medium sized domestic tasks.

The Karcher K4 pressure washers contain a host of features;

  • Dirtblaster Lance
  • One Way Lance
  • 6 Meter High Pressure Hose
  • On-Board Storage
  • T350 Patio Cleaner
  • Water inlet Filter
  • Water Cooled Induction Motor
  • Aluminium Pump Head
  • Plug ‘N’ Clean System for changing detergents
  • Draws water from static water source (ie a bucket!)
  • Rubber Wheels
  • 3 Year Warranty

First of all the biggest difference, apart from the increased specifications, between the Kacher K2 and the larger pressure washers is that the larger units have a water cooled induction motor.

The Karcher K2 motor is air-cooled which means a fan is blowing cool air over the motor. There is always a chance that the fan might malfuction or break. The larger models such as the Karcher K4 feature a water cooled motor. Basically a hose runs around the motor so when the machine is in operation the water is pumped through the hose and around the motor keeping it cool.

Like the Karcher K2 there are several lances included with which you can find a spray suitable for your purpose. For example a softer wide spray would be good for wooden decking whereas a harder concentrated spray is better for stubborn marks on driveways.

The pump head is aluminium which is stronger than plastic and allows for up to 150 bar power.

Click Here To Check Price Of The K4 On Amazon

Perfect For

The Karcher K4 Home Pressure Washer is a larger version of the Karcher K2 Pressure Washer and as such is suitable for medium sized domestic work as well as the smaller jobs of the K2.

Like the K2 the K4 can clean cars, bikes, stepping stones and patio tiles however with the Karcher K4 you also have the flexibility to clean driveways and garage floors etc.

The Karcher K4 Home Pressure Washer is therefore suitable for the homes, boats, caravans, motor homes and mobile homes etc.


  • Top Brand Name
  • Ideal For Home Use
  • More Powerful Than The K2
  • Aluminium Pump Head
  • Large Patio Cleaner
  • Plug ‘N’ Clean System
  • Can Use With Bucket For Water Supply


  • Fairly Heavy At 11Kg


Both the Karcher K2 and K4 are best selling pressure washers so it is no surprise to find many happy purchasers that have left raving reviews.

Here is what verified purchasers are saying on Amazon.

  • “Very satisfying. As easy as hoovering – only outside!!”
  • “Also, very quiet to use. I would give this six stars if I could”
  • “Easy to assemble and use. Does a fabulous job cleaning patios and garden furniture”
  • “Absolutely brilliant, especially the patio cleaner”
  • “Karcher are really great for all types of jet washing I wouldn’t buy any other make”
  • “Simply brilliant, perfect for home use”
  • “Really pleased with this purchase! It definitely does the job!”

Click Here To Buy The Karcher K4 Home on Amazon


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Karcher K4 Home Water-Cooled Pressure Washer
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