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Karcher K4 Compact Universal 1800W Pressure Washer | 1.679-401.0

Karcher K4 Compact Universal 1800W Pressure Washer | 1.679-401.0

SKU: SKU:1.679-401.0

Regular price £191.48 GBP
Regular price £209.99 GBP Sale price £191.48 GBP
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Same motor, pump & warranty as the K4 Full Control, just easier to transport, easier to store & much better value for money!

The Karcher K4 Compact is a durable mid-range machine in the Karcher pressure washer range.

The versatile K4 Compact is suitable for a variety of cleaning tasks, whether you want to gently clean delicate car bodywork or remove stubborn dirt from any hard surface.

Thanks to its compact design the K4 Compact is ideally sized for taking up minimal space while not in use & can be easily transported in the boot of a car. Featuring a telescopic handle & large rear wheels the K4 Compact is extremely mobile & easy to move around the home, while all inclusive cables, hoses & accessories can be neatly stored onboard.

This pressure washer comes complete with a vario spray lance for general washing & low pressure detergent application & a dirtblaster that delivers outstanding cleaning performance using concentrated rotating pressure for stubborn soilage and marking such as mould spots. A retractable detergent suction hose is also included allowing for the easy application of detergent while you are cleaning.

The Karcher K4 Compact features a high-quality N-Cor pump to reduce noise pollution and an impact-resistant, recyclable plastic casing effectively prevents dirt particles from damaging the motor and pump.

  • 1800W Universal Motor
  • 130 Bar, 420 Litres Per Hour
  • 6 Mtr High Pressure Hose
  • Detergent Suction Hose, Telescopic Handle
  • Vario & Dirtblaster Lances
  • Compact, Lightweight & User Friendly
Pressure washer K 4 Compact UM: Telescopic handle

Telescopic handle


Pressure washer K 4 Compact UM: Detergent use

Detergent use

Suction hose for use of detergents. Kärcher detergents increase efficiency while cleaning, help prevent dirt from returning and help to protect and care for your surface.


Pressure washer K 4 Compact UM: Integrated accessory storage on the device

Integrated accessory storage on the device

Convenient and space-saving accessory storage.


Features & Benefits

  • 1800W Universal Motor
  • 130 Bar, 420 Litres Per Hour
  • 6 Mtr High Pressure Hose
  • Detergent Suction Hose, Telescopic Handle
  • Vario & Dirtblaster Lances
  • Compact, Lightweight & User Friendly
  • Dirtblaster lance providing up to 50% greater cleaning power
  • A vario spray lance for general cleaning purposes & pressure adjustment
  • Quick release fittings allow for quick & easy attachment / detachment of hose & handgun
  • Onboard accessory storage
  • Telescopic handle & large wheels for great mobility
  • Fine mesh water filter prevents dirt particles from damaging the pump
  • Detergent suction hose for chemical injection
  • Impact resistant casing
  • Automatic motor stop

Product Specification

Product Code: 1.679-401.0

Brand - Karcher

Manufacturer Model No - 1.679-401.0

Current type - (V/Hz) 220 - 240 / 50 - 60

Flow Rate - (l/h) 420

Operating pressure (bar) - 20 - max. 130 / 2 - max. 13

Water feed temperature (°C)max. - 40

Power rating (kW) - 1.8

Weight (without accessories) (kg) - 4.7

Weight incl. packaging (kg) - 7

Dimensions (L × W × H) (mm) - 273 x 256 x 456

In The Box

  • Karcher K4 Compact Pressure Washer
  • 6 Metre Quick Release High Pressure Hose
  • Handgun
  • Vario & Dirtblaster Lances
  • Water Inlet Filter and Garden Hose Adapter
  • Tool Storage & Gun Holder


2 Year Guarantee



This Karcher product has a full two year Karcher Domestic use warranty. The warranty covers the machine for faulty or defective parts during the two year warranty period. This does not cover wear and tear and any consumable parts such as filters, brushes, high pressure hoses, trigger guns, lances, accessories or the result of commercial or industrial use that will result in the warranty being void and invalid.

IMPORTANT - PLEASE READ: If a problem occurs with the machine during the first 28 days of purchase then please place a warranty callback and KCT will replace your machine by return. After that period of 28 days the warranty is then undertaken by Karcher UK and you should contact them directly. They will then place the repair for your machine with a local repair center or collect the machine for repair.

Support Materials

Please Note: This item has additional safety or regulatory data sheets available. The product may have possible health and safety hazards covered in these documents. Refer to the container for full information and always follow the instructions.

User Manual

About Kärcher

Kärcher, a globally renowned company, is synonymous with innovative cleaning solutions and cutting-edge technology. With a rich history spanning several decades, Kärcher has consistently set industry standards in the field of high-pressure cleaning systems, floor care, and professional cleaning equipment.Founded in 1935 by Alfred Kärcher, the company's commitment to excellence and customer satisfaction has propelled it to a leading position in the cleaning technology sector. Kärcher's extensive product range caters to both residential and commercial needs, offering efficient solutions for tasks ranging from home cleaning to heavy-duty industrial applications.Known for their iconic yellow pressure washers, Kärcher products are characterized by their reliability, durability, and user-friendly design. The company's dedication to sustainability is evident in their development of eco-friendly technologies, making Kärcher a preferred choice for those seeking effective and environmentally conscious cleaning solutions.Today, Kärcher operates on a global scale, serving millions of customers worldwide. Their continuous innovation, commitment to quality, and emphasis on environmental responsibility reinforce Kärcher's position as an industry leader in the cleaning technology domain.

Delivery & Returns

Please Note: 

Free delivery and Express delivery services are not applicable for orders destined for international countries, specific out-of-area postcodes in the UK, and products requiring specialist delivery. A surcharge of £5.95 may be incurred for deliveries to out-of-area postcodes and £4.95 for specialist deliveries. For comprehensive information regarding out-of-area postcodes, kindly refer to the 'Out of Area Charges and Delivery Times' section below

We have a number of Home Delivery services available to you. Availability of these options will be shown at checkout.

Delivery Service Description Please Note Price
Free Delivery Within 3-4 working days (07:00 - 19:30hrs) Weekdays Only
(only applies to orders placed before 1pm)

FREE on Orders above £50*

Express Delivery Next Working Day (08:00 - 18:00hrs) Weekdays Only, applies to orders placed before 1pm Mon-Fri



PLEASE NOTE: Orders placed after 1pm, will be processed the following day, adding 1 working day to the delivery service. When selecting 'Next Working Day' - Orders placed after 1pm on a Thursday or anytime on Friday, will be delivered on the next working day which is the following Monday. For orders placed on a non-working day (Saturday or Sunday) please add 1 working day to your delivery date 


International Delivery

We do offer International shipping via DHL. Please contact us for a shipping quote. Delivery times are between 2-5 working days from dispatch for most destinations.



We have a 14-day return policy, which means you have 14 days after receiving your item to request a return.

To be eligible for a return, your item must be in the same condition that you received it, unused and in its original packaging. You’ll also need the proof of purchase such as order number or original email used when placing order.

To start a return, you can contact us at

If your return is accepted, we’ll send you a return shipping label, as well as instructions on how and where to send your package. Items sent back to us without first requesting a return will not be accepted.

You can always contact us for any return question at


Damages and issues

Please inspect your order upon reception and contact us immediately if the item is defective, damaged or if you receive the wrong item, so that we can evaluate the issue and make it right.


Exceptions / non-returnable items

Certain types of items cannot be returned, like custom products (such as special orders or personalised items). We also do not accept returns for hazardous materials, flammable liquids, or gases. Please get in touch if you have questions or concerns about your specific item.

Unfortunately, we cannot accept returns on gift cards.



The fastest way to ensure you get what you want is to return the item you have, and once the return is accepted, make a separate purchase for the new item.



We will notify you once we’ve received and inspected your return, and let you know if the refund was approved or not. If approved, you’ll be automatically refunded on your original payment method within 3-5 business days. Please remember it can take some time for your bank or credit card company to process and post the refund too.
If more than 15 business days have passed since we’ve approved your return, please contact us at

For more information about returns, please visit the link below

Returns & Exchanges

  • Free UK Shipping

    We offer Free UK Standard Shipping on ALL orders above £50. Your order will generally reach you within 2-5 working days from dispatch.

  • International Delivery

    We do offer International shipping via DHL. Please contact us for a shipping quote. Delivery times are between 2-5 working days from dispatch for most destinations.

  • Price Match Guarantee

    If you find a lower price on an identical item from a competitor, we will match it, ensuring you get the best deal available.

    Read More 

Customer Reviews

Based on 6 reviews
Jack Torrens
Archer K4 Compact

Excellent pressure washer - light and powerful


It's a Kracher. well built compact model, easy to use.

It is compact

I replaced an older K4 model with this unit. It is compact and takes up less space than the old unit, but no loss of power. Working very well so far

Brilliant for block paving

The Karcher 4 was recommended by neighbours for cleaning weed ridden block paving driveway. An absolute dream- it has cleared 3 years of surface grime and weeds in just a few hours. Looks brand new. Very easy to use, if a little noisy.

Compact and powerful

This K4 Compact is easy to use, powerful and much easier to store than the “full size” version. I use it with water from a canal via the intake hose bought separately and have no problems with water uptake. It’s a really useful bit of kit.