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The powerful K 4 Compact is small and easy to transport making it ideal for all cleaning tasks around the home. This model comes complete with Kärcher's long life water-cooled motor.

K 4 Compact 16373110 https://www.kaercher.com/uk/home-garden/pressure-washers/k-4-compact-16373110.html The powerful K 4 Compact is small and easy to transport making it ideal for all cleaning tasks around the home. This model comes complete with Kärcher's long life water-cooled motor.
Kärcher 159.99 GBP
Retailer search:


  • Pressure washer: For cleaning bicycles.
  • Pressure washer: For cleaning gardening machines and tools.
  • Pressure washer: For cleaning garden, patio or balcony furnitures.
  • Pressure washer: For cleaning fences and smaller garden paths or flagstones.
  • Pressure washer: For cleaning motorcycles and scooters.
  • Pressure washer: For cleaning small cars.
  • Pressure washer: For cleaning garden and stone walls.

The K 4 Compact Pressure Washer combines power and energy efficiency – its innovative water-cooled induction motor ensures enhanced performance and longer life. The K 4 Compact has a Quick Connect hose system, eliminating kinking and reduces set up times to make it even easier to use. Its compact dimensions allow for convenient transportation and storage, while the aluminium telescopic handle and wheels ensures excellent mobility. Ideal for cleaning all around the home, the K 4 Compact includes a Vario Lance, detergent suction hose and Dirtblaster Lance which provides up to 50% greater cleaning power than a standard high pressure lance. An impact-resistant recyclable plastic casing and fine mesh water filter prevent dirt particles from damaging the motor and three-piston axial-flow pump, whilst a safety valve prevents pressure overload. All Kärcher K4, K5 and K7 Pressure washers can work using a static or harvested water source drawn either using a Kärcher suction hose and filter, or connected to a water butt tap. The K4 Compact comes with a 3 year guarantee.

Features and benefits
Easy to transport
  • The small, robust pressure washers in the Compact series have two carrying handles for easy transportation. These practical, compact devices take up minimal space and can be stored quickly and easily, even in the boot of a car.
Outstanding performance
  • The K 4 Compact Home’s state-of-the-art water-cooled motor will impress you with its long life, performance and high quality results.
Quick Connect
  • The high-pressure hose is easy to manoeuvre. With the Quick Connect system, you can click quickly in and out of the pressure washer and gun, saving you time and effort.

Technical data

Pressure (bar/MPa) 20 - up to 130 / 2 - up to 13
Flow rate (l/h) max. 420
Max. water feed temperature (°C) max. 40
Current type (V/Hz) 230 / 50
Power rating (kW) 1.8
Area performance (m²/h) 30
Weight without accessories (kg) 10.7
Dimensions (L x W x H) (mm) 516 x 295 x 282


  • High-pressure gun, Standard Quick Connect
  • Vario Power spray lance
  • Dirt Blaster spray lance
  • High-pressure hose, 6 m
  • Quick Connect on machine
  • Detergent application via, Suction
  • Telescopic handle
  • Water-cooled motor
  • Integrated water filter
  • Adapter garden hose A3/4"
Pressure washer K 4 Compact
Pressure washer K 4 Compact

K 4 Compact is rated 4.4 out of 5 by 22.
Rated 1 out of 5 by from Not a long life product This is Karchers sales statement on this product regarding its motor ..Outstanding performance The K4 Compact Home’s state-of-the-art water-cooled motor will impress you with its long life, performance and high quality results. Performance not bad on full power Quality good Long life it is not ...Ive had my 3 yrs 8 months and its had a major motor fault . Its leaked from the motorhead all over the electrics. in short its broken. I expected a lot more from a karcher product. I would of been better buying a halfords special!
Date published: 2017-03-28
Rated 4 out of 5 by from Karcher - K4 compact Product was good value and produced good results with little effort.
Date published: 2016-10-18
Rated 5 out of 5 by from Very compact Very easy to use and does a great job. Would recommend to anyone.
Date published: 2016-09-15
Rated 4 out of 5 by from Compact & powerful Bought the K4 to replace 4year old K2 which would have been costly to repair. Very pleased with performance for car & patio cleaning, lot quieter than K2 and seems to be lot more robust
Date published: 2016-09-15
Rated 5 out of 5 by from Excellent for home & garden I purchased this pressure washed to replace my 10 yr old Karcher pressure washer. I find the changes made to the specification of the new machine worthwhile especially the Quick Connect system, to date it has been used to wash the patio the block paved drive and the car with excellent results, I have also purchased an adaptor so that I can use the old hoses.
Date published: 2016-08-23
Rated 4 out of 5 by from "Does the job" I purchased the K4 to replace an older and heavier power-washer and to suit my domestic needs. It's a good piece of equipment and if something goes wrong, the motor and pump can be repaired. I bought the cleaning detergent to use when washing the family vehicles, but after only a few uses the bottle was empty. I thought that less liquid would have been used, thus being more economical. I would not purchase this again due to the above and suggest that Karcher reconsider this area. The hose can sometimes be a pain, in that it's not all that flexible and needs to be fully stretched out. Maybe a rubber type would sort this out? Overall, it does the job and is powerful enough for 95% of domestic cleaning applications and is light enough to carry around.
Date published: 2016-08-10
Rated 5 out of 5 by from Small light weight machine i had a K2 before, but my K4 compact is a lot more powerful I could see the difference as soon I tried it out.
Date published: 2016-08-09
Rated 5 out of 5 by from Brilliant ***** "I recently bought The Karcher K4 pressure washer, I have used it on a block paving drive and Indian stone patios and steps. It is so fast I used to use a well known DIY stores own make and the drive used to take 2-3 days with the Karcher I did the drive and one patio in a day. The block paving looks brand new I never achieved that with the previous washer. The Indian stone came up beautifully and took no time at all. I am thrilled with the result I just wished I'd bought it sooner what used to be a incredible chore was just a pleasure. I absolutely recommend it.
Date published: 2016-08-09
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