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.


  • UK delivery

    Delivery in 7 days from our supplier
    Find out more
  • 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.

Q & As

Rated 4.7 out of 5 by 22 reviewers.
Rated 5 out of 5 by Love it!! Didn't realise how grubby my patio had become. Now looks like new :-) 26 October 2015
Rated 5 out of 5 by Excellent easy to use product High power cleaning, flexible hose makes for ease of use first class results, first class product. 06 October 2015
Rated 5 out of 5 by Really useful product I have used this washer for many tasks around the home and it not only did a brilliant job , but cut my cleaning time by half. I have cleaned the outside paths and drive way,washed down the outside paintwork where it normally would be really hard to access , and used it to wash down my car. I find it really easy to use as it is light and easy to move around. Don't how I managed without it! 16 September 2015
Rated 4 out of 5 by Nearly five star Delivery came in 5 days, but no advance notice, so lucky someone was in. I chose this model because of the 5-year guarantee. It seems very good after a first use. Putting it together was a bit of an effort. Some parts quite hard to get located - notably the dosage regulator, which I could only get in place by force of the self-tapping screws - kept wondering if the screws would strip out the plastic. Instructions for assembly ok, but not brilliant. (Diagrams could be improved.) Assembly took about forty-five minutes. Would like to buy Karcher water system separator, as per instruction booklet; but can't find one, even on Karcher's own web-shop. So my old anti-syphon device stays in place. 09 September 2015
Rated 4 out of 5 by Good product Not too keen on having to put it all together - OK, we managed - but it worked well and completed the main job we wanted it for very well - cleaning Yorkstone paving. So I'd recommend the Karcher but not the paving. 08 September 2015
Rated 5 out of 5 by Excellent Product Purchased K4 Home Pressure Washer after carefully considering range available. It has turned out to be a great choice. I have previously used a less powerful pressure washer on my patio and ended up scrubbing on my hands and knees! Those days are now gone with the K4 cutting through built up grime in no time. I more or less did my patio and side entrance in one afternoon. Also used the patio attachment on my brick driveway and it came up like new which was amazing considering it was the first time it had been cleaned since being laid 6 years ago. Effortless to use and easy to put together. Although detergent supplied with the K4 I have not yet used this, I have great results just by using water. I would certainly recommend this product for home use. 01 September 2015
Rated 5 out of 5 by Fantastic piece of kit This is the first pressure washer I have owned and it is absolutely brilliant! Cleaned my large patio in no time at all with the attachment, cannot recommend it more highly, delighted with it! 21 August 2015
Rated 5 out of 5 by Excellent product After a lot of research we chose to buy this product. We have only used it once so far though, to clean the patio, but were very pleaded with the results. It was a lot less messy using the patio cleaner, compared to our last machine which didn't have one. We like the idea of being able to use it by drawing in water from an open reservoir, eg water butt, but haven't done that yet. It would probably be a good idea to review it again after having used it a few times, or indeed after having used all the functions. A three year warranty was also a plus. 14 July 2015
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