Kärcher K4 Premium Eco!logic Home Pressure Washer

Product information

Please note: This product is not available in our shops for viewing. However, you can still place your order in store. Never direct a pressure washer at yourself or at others.

For those who need to clean larger surface areas with more power, the Kärcher K4 Premium Eco!logic Home is a truly advanced medium level pressure washer, boasting a hardwearing aluminium pump head. Thanks to an eco rotary switch energy and water is reduced by up to 20% for a true energy efficient model with excellent results.

The hardworking 1800W motor is looked after by water-cooling, so you can enjoy enhanced performance and a longer life. This machine also has a water inlet filter to prevent dirt particles from damaging the pump.

With a liberal 420 litres per hour flow rate and powerful 130 bar pressure, the K4 Premium Eco!logic Home is ideal for cleaning:

  • Barbecues
  • Garden patios and decking
  • Stone walls
  • Motorbikes
  • Larger vehicles

It hosts a Plug & Clean detergent system, which makes for quick and convenient changeover between detergents and offers a seamless cleaning experience. The quick connect release on both ends of the hose reduces set up times even further.

For a completely responsive user experience, the motor stops automatically when the trigger is released. Upright construction, smooth wheels and a higher handle offer excellent mobility when transporting this pressure washer. Meanwhile the lance and trigger storage facility and large cable hook ensures compact storage.

Accessory information


  • Vario lance
  • For infinitely variable pressure control from low-pressure to high-pressure jet by simply twisting the spray lance, easy to connect to your trigger gun with the bayonet design.


  • Dirtblaster
  • A powerful rotary nozzle designed with a rotating pencil jet which provides up to 50% greater cleaning power than a standard high pressure lance, ideal for removing stubborn dirt on moss covered or weathered surfaces.


  • T250 Patio cleaner
  • For the splash-free cleaning of even surfaces, such as patios and stone walls. Increased cleaning power with two rotating flat jet nozzles, this accessory can also be used on vertical surfaces such as garage doors.


  • Ecologic Universal Plug & Clean detergent
  • A powerful, ecological universal cleaner from 100 % renewable raw materials and a bottle made from sugarcane plastic. Effortlessly removes oil, grease and dirt from all round the home & garden. Simply plug the container into your plug & clean facility or put the detergent suction tube into the container.


  • Ecologic Suction hose & Filter
  • This accessory is used for extracting harvested water from your water source to use with your pressure washer.


  • High-pressure hose
  • 6m high pressure hose, which is simple to connect to your trigger gun, and then can be securely attached to your unit with the quick click system.

    Eligible for International Delivery
    5 years
    Hose length
    Maximum Pressure
    130 bar
    Model name / number
    K4 Premium Eco!ogic Home
    Online Exclusive
    Pressure Washer Type
    Medium class
    Water Flow Rate (l/hour) Information The higher the flow rate, the more water comes out of this pressure washer. Measured in litres per hour (l/h)
    Weight Information Unpackaged weight

Editors Notes

Alfred Kärcher founded the German family-owned Kärcher company in 1935, and today it remains a top performer in the business of cleanliness and maintenance of value. Providing supremely reliable pressure washers, Kärcher have been behind the scenes in cleaning such distinguished sites as Nelson’s Column, the Space Needle and Mount Rushmore.


Delivery in 7 days from our supplier


International delivery not available

We want you to be happy with your purchase. If you're not, depending on the type of product, you can make free returns in the UK via John Lewis shops, Royal Mail, Collect+, or MyHermes. If you need to arrange collection of large or heavy items, call us on 03456 049 049. For international returns queries, call us on +44 1698 545 454. Find out more about returns.

You'll find returns information on your delivery note. Unless faulty, we'd like you to make your return within 90 days of purchase. Exceptions apply to certain products - find out more about our refund policy.


Find out more about returning products

Q & As

Rated 4.6 out of 5 by 12 reviewers.
Rated 5 out of 5 by Love it! I really love my jet wash. I've only used it on my paving so far, but it did a marvellous job. I wasn't expecting to have to put it together, but actually, it was really easy. And I felt quite proud when I'd done it and got it working. My partner brought me some ear plugs... and I'm really glad he did as I got really carried away and did loads in one go. It's quite noisy. Would highly recommend. And I'm going to lend it to as many people as possible. 12 May 2015
Rated 5 out of 5 by Excellent all round product Having just taken delivery of a new car and wanting to keep it clean without using the dirt / stone laden brushes of my local jetwash, I bit the bullet and bought one of these. Its an excellent product - loose dirt just comes straight off the car with the hose, and then the optional foam gun is excellent for spreading shampoo over the car. Quick rub with a microfibre cloth and then rinse using the K4 and car is all clean and shiny again. Its also brilliant for doing the alloys - just spray on some specfic wheel cleaner, and then after a minute or two all the baked on brake dust comes off with nothing more than a spray from the high pressure lance. The patio cleaner is brilliant too, amazed how dirty my patio actually was! It takes 10 minutes to assemble out of the box, another 10 to read the instructions and then its very simple to use. All the attachments stow away on the cleaner which makes it very easy to wheel around to where you want it. Very happy with it. 15 October 2014
Rated 5 out of 5 by Cleanest car ever Having used Karcher industrial pressure washer in Germany 20 years ago I am surprised how good this one is. It came with a 5 year guarantee. Only fault is length of cable or hose could have been longer to compensate. The patio cleaner is great no splashing friends warned my wife the doors and windows would be splattered but this is when the lance is used. Well pleased I am. 12 July 2014
Rated 4 out of 5 by Surprisingly powerful and fun to use Pricey equipment but should serve us well over the 5-years guarantee period. I had to assemble the wheels, handle bar and winding handle to the yellow colour body with the self-tapping style screws which were supplied. The machine, the hoses, the lance and attachments and the T-Racer patio washer are of robust quality and perform efficiently. The only annoying thing is that a user will have to trail behind him or her the machine, power supply cable, the inlet hose from the tap and the green outlet hose attached to the lance. Avoid water contact to the electric socket connection. This model stows things easily and wheeling around is effortless. Certainly recommend it for larger and frequent jobs. 09 July 2014
Rated 5 out of 5 by Fantastic piece of kit What more can you ask for ? A fantastic pressure washer, lots of accessories and a 5 year guarantee. John Lewis are the best. 08 July 2014
Rated 5 out of 5 by Excellent reults Having had a competitors washer for a couple of years and becoming frustrated with poor performance, breakdowns and expensive spare parts costs i decided to bin it. Having read several reviews I bought K4 washer complete with home kit. Ordered with JL (4/5/14), delivered via courier (16/5/14) I have used it on large paved drive, slabed patio and wooden decking and I am very peased with the results. A bit fiddly to assemble but I am impressed with the quality and performance, Very quiet compared with previous washer and seems more economical with water useage. And to top it all JL gives a 5 year guarantee...all round proper job...thanks JL 22 May 2014
Rated 5 out of 5 by Karcher K4 Premium Ecollogic Home Pressure Washer Extremely pleased with the results, has cleaned up some very grimy specialist rendering which we thought we would have to have redone. Have also experimented on our driveway although only to see an initial result, which was also very good. Great too for washing our cars and getting the grime from underneath plus cleaning the wheels. Early days but looking forward to getting the rest of our jobs done. 11 March 2014
Rated 5 out of 5 by easy peasy An absolutely brilliant product. After borrowing a friends karcher, I was so impressed I bought the K4 ecologic. It cleaned my brick patio and brought it up like new! I went on to clean the retaining walls and paved areas! Next the conservatory glazed roof and sides followed by the cars. Assembly is so easy and common sense i didn't need the instructions! 07 February 2014
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  • 5 year guarantee included

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