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Kärcher K 4 Classic Pressure Washer - 1800W

4.6 (79 reviews)
SKU: 240609115806011 EAN: 4066529051127

Compare 4 prices for Kärcher K 4 Classic Pressure Washer - 1800W — from £159.95 to £179.51 across 4 UK sellers including Tooled Up, My Tool Shed, Toolstation and more. Save up to £19.56 (11%).

£159.95 6h ago
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Compare Prices from 4 Sellers

Prices updated 24 Apr 2026
2
My Tool Shed
£159.95 +£0.00
6h
3
Toolstation
£159.98 +£0.03
-164h
4
BP Tools UK
£179.51 +£19.56
-162h
#2 My Tool Shed
6h ago
£159.95 +£0.00
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#3 Toolstation
-164h ago
£159.98 +£0.03
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#4 BP Tools UK
-162h ago
£179.51 +£19.56
View

The K 4 Classic pressure washer can be stowed effortlessly anywhere and transported easily thanks to its compact dimensions. Yet it still offers the full performance of a pressure washer. Plus, the height-adjustable aluminium telescopic handle ensures the pulling height is always comfortable. Other equipment details include the Quick Connect trigger gun, a 6m high-pressure hose, a Vario Power spray lance, a dirt blaster and a water filter. With an area performance of 30m/h, it is ideally suited to regular cleaning of moderate levels of dirt.

Easily Switch Between Surfaces - A Vario lance and Dirt blaster lance allow you to select the right pressure for cleaning any surface.

Everything In One Place - Keep everything you need close to hand with on-board storage for the lances and cable.

Effortlessly Apply Detergent - Easily apply detergent as you work to any surface with the built-in detergent suction tube.

Get To Work Instantly - Get started with minimum effort. The Quick Connect system instantly links the high-pressure hose to the machine and trigger gun. 2 year guarantee with option to extend to 5 years by registering your product within 28 days of purchase at karcher. Com/register.

  • Model number: 16794210.

Pressure washer features:

  • Corded or cordless: corded.
  • 1800 watt universal motor.
  • Flow rate 420 litres/hour.
  • Rated bar - 130.
  • Max bar - 130.
  • Suitable for light to medium duty tasks.
  • 6m hose.
  • 5m mains cable.
  • Wheeled for ease of use.
  • Maximum temperature of 40°C.

Accessories included:

  • Standard lance.
  • Dirtblaster lance - provides a concentrated blast of power to remove dirt.
  • Pressure adjustable lance - allows you to alter the level of water pressure to suit the task.
  • Quick connector.
  • Suction tube.
  • On board storage.
  • Manufacturer's 5 year guarantee.
  • EAN: 4066529051127.
No specifications available
No features listed
No items listed

Customer Reviews 79

4.6
79 reviews
5 star
60
4 star
12
3 star
4
2 star
0
1 star
3
Good tool and good value
5.0
January 8, 2026
Derek Buc Verified Purchase

Sufficient pressure for cars and paths very pleased

Item not found and 5 day delivery for re-order
1.0
January 3, 2026
Geoff Hind Verified Purchase

Item apparently delivered ( next day) to store but they were unable to find it.
Item reordered with revised delivery of 5 days!
Sadly not one hint of an apology
I expect better from a normally good experience

Excellent machine cleans well
5.0
August 9, 2025
Nylon Brush Verified Purchase

Excellent machine cleans well the rotating head is really good

Powerful and Compact
5.0
July 23, 2025
Elbee Verified Purchase

I bought this a month ago and used it on my front garden path and the results were amazing. I also used it on my patio and was very happy with the results. It is a very compact and powerful machine. I am a very happy customer. Thank you Karcher.

Small and powerful
4.0
May 18, 2025
thippomas Verified Purchase

from google search 130 bar is min you need and this is the cheapest model in Karcher that offer such power and it is smallest. Thru it comes with limited accessories, you may not need to waste money on those you don't need but comes as a kit.

Pressure washer
5.0
April 24, 2025
P22B Verified Purchase

Great product, good value for money would recommend

K4 Great piece of kit
5.0
April 22, 2025
Mandyjb Verified Purchase

The K4 is a great piece of kit. Easy to set up and worked like a dream. Love the two wand options, got patios and paths done, cleaned my garden furniture and washed the car too.

Great Service From Toolstation staff.
5.0
April 12, 2025
Russell Irvine Verified Purchase

Returned this as not noticeably better than the K2 I bought it to replace. Toolstation accepted the return without problem and I received refund email by time I drove short distance home. Money refunded to my bank account very promptly. Well done Toolstation.

K4 pressure washer poor quality - leaking from detergent pipe
1.0
April 6, 2025
2i4drw7ml6b624o6w869y6owx Verified Purchase

K4 leak used only twice. Water coming from detergent pipe and machine hunting.

Terrible quality
1.0
April 1, 2025
No Nickname

Bought to use approx twice a year on the patio/in the garden. Had to be sent back for repair after a couple of uses as a lot of water was just coming out the bottom of it. A few uses later - same problem. It's going in the bin. We got this to replace a previous Karcher that had also packed in. Won't buy Karcher again.

Kärcher
5.0
March 27, 2025
SCee Verified Purchase

Powerful and worth the money. Very easy to use and light

A little cracker.
5.0
March 12, 2025
A S A Verified Purchase

Great little pressure washer that definitely punches above its weight. Stained patio cleaned with ease, and put me in my wife’s good books. Bonus!,

Very portable. Good value for money
5.0
March 3, 2025
Den Kenny Verified Purchase

Lightweight machine. Can be carried around in one hand. Good pressure from such a good value unit.

Leaking internal the day after purchase
5.0
January 12, 2025
M Walsh Verified Purchase

Started leaking 24 hours after using, used day of purchased, leaked internally

K4 Classic
5.0
December 22, 2024
dshkwoumh6nbsw4ptuwe2exuv Verified Purchase

Small, easy to store it, really power full.
Highly recommended.

Easy to use but underpowered
4.0
November 29, 2024
Popeye70 Verified Purchase

Neat and compact but lacks power, would benefit from being updated to 140 bar

Adequate at 130bar, and at its price
4.0
November 12, 2024
CongleJohn Verified Purchase

I bought the K4 to replace the K2 I've owned for many years. The K4, more mobile than that K2, feels no more powerful and although it removes stubborn moss from my driveway, does so with difficultly and time, requiring the wand to be within say 4 ins of the surface. Ok for the price and for those with time!

Karcher
5.0
November 6, 2024
Tvc15 Verified Purchase

Great product good service from girl at highlane store very professional . I will go back very happy .

K4 pressure washer
5.0
October 10, 2024
smodva5s4tfxca6vecuxu12og Verified Purchase

Impressed with this compact pressure washer, does the job well. Old k4 worked well but was twice the size. Well made as all Karcher products. Hopefully it will last as long as the previous one.

Good product overall
5.0
October 8, 2024
Jakub J Verified Purchase

Does what it says on the box. Design wise it does look smart. It has wheels and little holdall style telescopic handle. Bit excessive to be fair as unit is so light it doesnt nees it.
Only issue worth pointing out- front on the unit is shaped in the way that suggests You could coil the hose around it. This is not the case. These is not enough depth to convex shape causing hose to slip off and uncoil

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