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The powerful K4 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.

K4 Compact 16373110 https://www.kaercher.com/uk/home-garden/pressure-washers/k4-compact-16373110.html The powerful K4 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 149.99 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 K4 Compact Pressure Washer combines power and energy efficiency – its innovative water-cooled induction motor ensures enhanced performance and longer life. The K4 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 K4 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 K4 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 K4 Compact
Pressure washer K4 Compact

K4 Compact is rated 4.4 out of 5 by 22.
Rated 5 out of 5 by from Ideal I bought this for general house and garden cleaning, and also for washing my boat. Being a compact model it is easy to store and throw in the back of the car to take to the marina. Having the long pressure hose is a real bonus when washing a car or boat. A water cooled motor means I don't have to worry too much when using it, it doesn't overheat like some pressure washers.
Date published: 2015-09-24
Rated 5 out of 5 by from The best item I have ever bought. I bought K4.9 nearly 10+ years ago. I am still satisfied with my buy. As other reviews mention, its powerful but not excessively powerful. It is made for what it is advertised for. It cleans the patio so so easily and with minimum water waste. It washes the car so quickly. I honestly and sincerely recommend this household item to anyone looking for buying a tool to clean patio. When I bought this item I paid almost twice as much as it is now available in market that is why I gave 4 star for the price. But this item for price under £200 is fantastic.
Date published: 2016-05-30
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 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
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 1 out of 5 by from Disappointed Thought I was buying a good brand. On using second time no power in pressure
Date published: 2015-10-01
Rated 5 out of 5 by from Ease of use packs up nice and neat Bought as a replacement for an older Karcher the K4 Compact meets all my demands with out all the extras. As a taxi driver my vehicle requires cleaning 2/3 times weekly the K4 make easy work of it.
Date published: 2015-10-02
Rated 3 out of 5 by from Troublesome I bought this model because it said it could be used with water from a rain collecting butt. First time I used it, worked well. Second time, it refused to start.
Date published: 2015-10-09
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