Kärcher K4 Full Control Pressure Washe
Kärcher K 4 Full Control Pressure Washer
The versatile and powerful Kärcher K 4 Full Control pressure washer makes it easy to select the right pressure for the job, whether you’re cleaning the patio or the car. Easily adjust the pressure from one surface to another with the LED pressure setting display on the trigger gun, and switch between the Vario and Dirt blaster lances depending on your cleaning task. The machine’s Plug ‘n’ Clean system applies detergent as you clean for maximum efficiency without making a mess.
K 4 Full Control
Pressure Settings Made Simple
Use the LED display on the trigger gun to select the right pressure for the job, effortlessly.
Easily Switch Between Surfaces
A Vario lance and Dirt blaster lance allow you to select the right pressure for cleaning any surface.
Cleaning Made Simple
Make light work of applying detergent with the Plug ‘n’ Clean system – just click in the bottle and you’re good to go
Get To Work Instantly
Get started with minimum effort. The Quick Connect system instantly links the high-pressure hose to the machine and trigger gun.
Everything In One Place
Keep everything you need close to hand with on-board storage for the lances and cable.
Easy To Pull And Store
Select the perfect pulling height with the telescopic handle, which retracts completely to save space when you don’t need it
Built To Last
You’ll get years of use thanks to the state-of-the-art water cooled motor, built for top performance and durability.
Maximum Stability
This machine won’t just fall over – a low centre of gravity, hose guide and larger base keep it as stable as can be.
Kärcher Pressure Washers
 K 4 Full Control |  K 2 Compact |  K 3 Home |  K 5 Premium FC Plus |  K 7 Premium FC Plus Home | |
| Pressure (bar/MPa) | max. 130 / max. 13 | max. 110 / max. 11 | max. 120 / max.12 | 20 – max. 145 / 2 – max. 14.5 | max. 180/ max. 18.0 |
| Flow rate (l/h) | max. 420 | max. 360 | max. 380 | max. 500 | max. 550 |
| High Pressure Hose length (m) | 6 | 4 | 6 | 8 | 10 |
| Weight without accessories(kg) | 11.4 | 3.7 | 6.5 | 12.7 | 17.7 |
| Built-in hose reel | ✘ | ✘ | ✘ | ✘ | ✔ |
| Detergent Application | Plug ‘n’ Clean | Suction Tube | Built-in Detergent Tank | Plug ‘n’ Clean | Plug ‘n’ Clean |
| Home Kit Included | ✘ | ✘ | ✔ | ✘ | ✔ |
| Weight: | 11.4 kg |
| Size: | LARGE |
| Dimensions: | 30.5 x 58.4 x 39.7 cm; 11.42 Kilograms |
| Model: | 1.324-002.0 |
| Part: | 1.324-002.0 |
| Colour: | Yellow/Black |
| Pack Quantity: | 1 |
| Batteries Required: | Yes |
| Batteries Included: | Alkaline |
| Manufacture: | Kärcher |
| Colour: | Yellow/Black |
| Quantity: | 1 |
| Size: | LARGE |
Good product. Don’t know why people are having a hard time putting it together, it’s just a few screws and that’s it. Used almost each weekend for the cars. It is heavy and can get caught around all the pipes and power cable but that would happen with most Karchers. I use the Maguire snow foam cannon with the K4 with very good results. Only used it on the car but it certainly is powerful enough for brickwork, patios etc.
The karcher was fine
But found the foam dispenser
Setting to be poor when used
Poor lathering plus it used to much soap
I found it better by using a sponge to get the right results
Excellent product great on everything, car, motorcycle, patio & drive recommend this model
There are other cheaper pressure washers about but they aren’t going to be as efficient as this K4 Karcher model. It is a substantial beast and quite heavy so you need to be reasonably fit to deal with it. It came in a box and you have to assemble some of it which I had not expected. If you follow the pictures and the instructions carefully you should get it right but don’t try and put it together without looking at the booklet. For instance you might not realise it is essential to pull the hose part through the side hole before attaching it – if you don’t there will be an impossible coiled muddle.
Once it is put together you can use either the single high pressure fitting that is suitable for paving/drives etc (though beware any loose grouting as it will take it out). Or use the adjustable spray head which sends the water out in a fan shape and can be used at hard pressure or dialled right down so you can do your car or garden furniture, or add a bottle of shampoo for instance to the dispensing part at the top of the machine.
The wheels turn easily though you have to watch you don’t get muddled up with either the hose or the electric cable. You can use it with an extension lead if you need to go a bigger distance though obviously make sure the extension is a safe one for outdoor use and not near enough to the water.
The golden rule is that you must attach the water and turn it on before switching on the machine – you should never run it dry as that risks damaging the machine. I was quite cautious about this mix of electricity and water in one machine but it is superbly insulated and once you get cracking with it you won’t want to stop!
Came with a kinked pipe but Karcher replaced with no quibbles
Great bit of kit with awesome control on the pressure.
Karcher have a good reputation. This power washer ticks all the boxes, very easy to use. Im impressed by its power. Ive used it to clean the patio and the car so far. Its quite versatile so will be very handy for other jobs. I would recommend
Excellent piece of kit wouldn’t expect anything less from karcher, does all what it says from cleaning the car to washing the patio down completely versatile
Powerful and really easy to use on car and also the driveway.i had a Bosch power cleaner before but this is much better I would definitely recommend it.
Had the first go on a patio, I didnt get on with the instructions so trial and error was the order of the day. Started with the variable lance attachment and the cleaning was OK on the stringers, hard surface setting. I was not blown away though. I then tried the other lance just to see what it was like. …. It was perfect. It’s sprays in a rotating pattern so for cleaning patios it blasts a circle of maybe 6 to 8 inches. I guess it’s like a mini version of the full on patio attachment.
Impressed with the feel and quality after a first use. But not all the. I.pressed with the variable lance.
I may update this post after a few more uses, if anything comes to mind.
I’d like a longer handle to make it easier to move around.
Love the lights on the gun! Feel like a ghostbuster!
Very good weight to it so it doesn’t fall oven when your trying to stretch out the hose.
The little string pouch is a little tight for getting the power cable in but it holds this neatly in place if you wrap the cable up tightly enough.
Love the look and design looks very cool when your out washing the drive or the cars you feel like the envy of the neighbourhood as it looks modern and futuristic.
Used my K2 fixtures on this especially my patio head which works wonders.
Only thing is I’d recommend leaning the power washer over after you have taken the hose out and the power off as there is still a little residual water left in the pump/motor which can leak out in the garage or shed when the water tension give. So lean to the front to allow the water to drain out first before picking away otherwise you’ll have a wet floor next time you walk in to your man cave!
Ultra powerful – Like
Didn’t come with a detergent dispenser this has to be purchased separately – Didn’t like
Worked very well . I now have a very smart drive , patio and front pathway.
very easy to change from full power spray -to soft soap application -and then back again – i have added my extension hose from my old unit which lets me do more without moving the power washe
Easy to assemble and use once you’ve fed the hose through correctly. Really powerful spray. So far been very effective for general grime around the garden.
The K4 is everything I could have asked for, Had power washers for ever and this one is the best so far. Even blows your socks off when using. Perfect for cleaning deep down.
Great product arrived on time just unfortunately missing a 2 items like handle and fitting screws for assembly
A great machine that is safe to use on fencing, windows and cars because you can reduce the pressure.
I had a k2 before this and I am very impressed with this machine far less vibration and the extra pressure makes the hard cleaning jobs before much easier.
Liked everything about it,used it to jet wash my drive and pathways,full marks
It’s quite weighty but very powerful and does a lovely job of my paving
This machine replaced my old karcher pressure cleaner of nearly twenty years old.The results of cleaning my large patio were amazing and so easy to use.
Brilliant first class I only purchased because my other was 18 years old can’t beat them
Looked at several, and settled for this model as best value. Works well cleans as expected, and unlike my old one packs neatly away for storage. Easy manoeuvrability, would recommend this one.
I decided on Karcher as had one before for many years without any issues.
If the new K4 lasts for over 10 years like my previous one I will be happy.
Neat and quiet and easy to use but not “amazing” top pressure… the led thing is a bit of a comic in that it doesn’t actually control anything … it just tells you what you have set the nozzle up to do. I like the fact it’s water cooled – I feel that makes it much more durable and likely to survive heavy use.
good bit of kit took years of the patio area
Does a great job and I accidently found out that it can strip garden furniture prior to repainting !!!! Has done a good job on black spot on the patio.
Fantastic quality product. Being picky i had to buy an extension for the gun side of the hose because i felt the original was too short. Very glad i chose a Karcher k4 though
The diagram for assembly was terrible, thank goodness for YouTube, and helpfull videos,.For use round the garden etc, pleased with produc
Great bit of kit does all the jobs with ease
The Karcher K4 is brilliant,lots of pressure,I cleaned my path and patio and it came up like new
Love everything about it. Tried another make when my last Karcher finally gave up the ghost but sent it straight back as it did not match a Karcher in build quality or performance. Ordered a new Karcher and am really happy with it.
Ordered about 2 months before it arrived but it was well worth the wait – absolutely fantastic piece of kit with all the attachments
No issues so far after 3 months of use and the best power washer we’ve ever had
Brilliant piece of kit and easily stores
I’d been thinking about the k4 for a while and product lived up to expectations and value for money
Why did I not buy one of these years ago….???
Had not realised how dirty my doorstep concrete was !!!
Cleaned chook coop too.
Love it.
A very powerful piece of kit easy to assemble and easy to operate and a very fast delivery as descibed next day
A very powerful piece of kit easy to assemble and easy to operate and a very fast delivery as descibed next day
If you’re looking at buying this bit of kit don’t hesitate it does exactly what you would expect great ergonomic design and very straightforward to use and there are endless amount of different adapters available to cover just about any job around your home.
This product is good does exactly what it Supposed to thank you
Received it on time, decent packaging.
I’m not an idiot but the pictures in the assembly suck big time.
Some parts look like they are designed for other washers.
Parts supplied were not shown, as a part number or ref number, so we don’t know what parts have a name/number/they fit etc.
Anyway, I unpacked it using directions and common sense.
Looked good, only 2 screws left. Sorted that after checking for 2 holes missing.
Tried it and works fine, Take care, it can rip out tarmac or other soft surfaces.
Bottom line, its a good machine, take care its powerful.
Received it on time, decent packaging.
I’m not an idiot but the pictures in the assembly suck big time.
Some parts look like they are designed for other washers.
Parts supplied were not shown, as a part number or ref number, so we don’t know what parts have a name/number/they fit etc.
Anyway, I unpacked it using directions and common sense.
Looked good, only 2 screws left. Sorted that after checking for 2 holes missing.
Tried it and works fine, Take care, it can rip out tarmac or other soft surfaces.
Bottom line, its a good machine, take care its powerful.
Driveway and patio have come up a treat.
I have purchased the car wash detergent and patio cleaner seprately. Not sure it has made much difference though
Fast, efficient, good product. Up to kartcher’ usual high standards
Very useful piece of kit. I shall be doing my own car in future, as I can take my time without any risk of scratches. The K4 does a great job at cleaning the car, I wish I bought one years ago. My patio came up very nicely so it has paid for itself already.
Very good machine except the pressure hose is not very flexible and does not rotate “very irritating” Have to buy a new hose that does. I would like the el cable to be 2m longer same for the pressure hose. That should be more flexible and rotate
Great pressure adjustment. Can be a bit fiddly to get the correct pressure, otherwise easy to use.
Great item, we’ve always had karcher pressure washer and upgraded to this one. We use it for so much.
Great product and simple to out together but diagrams are very small in instructions. Delivery was a day late, but not the fault of the seller, as Hermes always seem to be late where we live. Overall very pleased.
Had this pressure Washer for two years now and it is still going strong. I am quite surprised by the amount of negative reviews as like I’ve already mentioned, it has never missed a beat in all the time I have owned it.
Easy to set up and use, I must use mine on average twice a month, mainly for the car but do all the block paving in the warmer months also. The hose has a decent length to it but would of been better if it had another couple of meters so the unit didn’t have to be moved whilst doing the car.
One of the things that I do that has maybe prolonged the life of the washer is that mine is kept inside when not being used. The unit regardless of how it’s orientated after use does retain quite a lot of water. This is noticeable after leaving it a few weeks and when I come to use it again quite a lot of water is released from the hozelock attachment. The issue I believe many might be having is that storing this in a shed over winter, the retained water will freeze within the unit causing it to expand which might be the reason why some are breaking down.
Personally I think it’s a great piece of kit.
Got this machine as an upgrade for my last Karcher 3.99 all features same but improved. I’m pleased with the performance so fa
It does exactly what we wanted from washing the car to tackling the the old decking excellent product. We now look to buy various attachments to enhance it furthe
I love my new karcher pressure washer. I am itching for the weather to get warmer so I can power wash EVERYTHING. This karcher has great pressure and is easy to use. It made a fantastic job of the patio and cleaned my plastic patio furniture up like new. I only gave 4 stars for manoevrability as it is quite heavy lifting in and out of shed, but when working with it, it is easily pulled around. Assembly took me awhile, I just wish things would come ready assembled. However I am not very good at that kind of thing so anyone with a brain and hands more used to this type of activity would have no problem with it.
Wow very impressed with my new karcher K4 Full Control.
My old one k2 that I had for 4 1/2 yrs and I thought that was a powerful little machine, then I got this bad boy, o my word I was washing my aunties back garden and the paths are made up of old rough concrete with yrs of moss. I was soaking it first with my old one then I got this, I could not believe the power!!! It not only blasted the moss it’s acts ass a weed remover as well.
The only little thing I would improve is I got power washing cramp haha so if it had a button to keep the trigger on.
Over all I’m very very impressed .
his product is amazing to me and I have had plenty of use out of it so far cleaned just about everything I could outside and it easily removed dirt form years old patio slabs cleaned my car like a dream its my new toy till I need to upgrade
After I’d put it together – which was pretty simple – although the instructions are written as a test to see if you’re half asleep or paying attention or something because they were not written for a human being. Ok, that’s partly a joke because everything else is so good.
After the usual drama about realising I was not getting any output as I hadn’t gotten the water hose connected properly it sprang into life and with the first job of cleaning the patio I couldn’t believe how fast and efficient and how DRAMATIC the difference was.
Tomorrow I’m going to Jet-Clean everything. It’s CV19 lockdown so everything will get it. If I had a cat it would get it too. Also a dog or Tortoise would get the treatment.
Very very impressed.
Quieter than old K2. Pressure is good and gets algae off patio and decking.
I’ve only used this once since buying and the results were very good. A choice of power settings makes it easy to use but there are a few elements that are not great.
1. The electronic display on the handle is a waste of time, it offers nothing and is a cheap gimmick
2. There is no locking mechanism to keep the trigger held in the ‘on’position. Not an issue for me, but should anyone have any issues with gripping such as arthritis or a disability in their wrist/hand, it is very difficult to use for any length of time.
3. Storage of hose and cable is poor
Overall, the actual pressure washer element is fine, good power, not too noisy, good wheels and handle for moving around but it feels like a lazy design and with little thought it could have been so much better.
Overall the jet wash performs perfectly it has made my concrete driveway look brand new, as for the electronic nozzle its a bit pointless to be honest and not needed. A big design flaw from Karcher is the fact they didn’t have a reel of some sort to the back of the jet wash to coil up the hose and the little pouch that you are expected to put your cable is very small meaning you have to bundle the cable quite tight after use. Personally I would recommend the product for its performance alone. However it has numerous design flaws that need correcting in any future models. I also find that because of the new slot that guides the hose through the jet wash ends up bundling up badly and end up messing on for ages just to get the full length of the hose out.
Great power washer for the money
Should come with more accessories though
Cheeky that they are extra to buy
I use this for cleaning flags and patio very good job done very pleased with i
Still a pain to move around with the stiff cable
Like most things in life you get what you pay for. In this instance we have been successful. Works as it should but we only use it for cleaning externally. Never use it on the car as we have seen the effects on our fencing. Now we are ready for some fine weather.
Only a simple test so far, to compare with my old pressure washer of similar power and was pleased with the power and clean.
Bought based on research as to which is the best pressure washer. (which is the K7 but that has an astronomical price!) This was the second best. Can’t fault it. Sturdy, well built and does a great job
Three comments:
1. although on wheels, with an extendable handle it is VERY heavy if you have to pick it up.
2. you do not have to buy the pricey (on average 13 a bottle) Karcher “drop in” cleaning solutions if you pay the extra 15 for the Karcher foam bottle/lance and use another, better value, cleaning solution. You’d then only have to consider buying a bottle of cleaner if you wanted to clean the patio.
3. Check prices…. It may be cheaper to buy the T450 patio cleaner head and the T4 standalone separately rather than in one inclusive package.
Bought this over a year ago. Jet wash works great easy to move and assemble . Karcher after care is brilliant. Small peice is broken and leaking. A simple message to karcher and a collection is arrange for the repair free of charge.
Decided on the Karcher full control K4 after reading several reviews of similar products. Glad I did as this is a beast of a machine! Cuts through patio grime with ease. Took me no more than 15 mins to assemble.
I spent a long time looking to buy a pressure washer. I compared all of the different types. I also spoke to several people who had different types and this one came up trumps. One person had his for years until he lent it out to a friend who broke it.
After spending a couple of weeks looking at them all I made the right decision in buying this make and model.
Bit of a crazy one this…I ordered this item 9 months ago an received it in excellent time,the item packaging box etc was all spot on no issues at all,I had to grab it from a pick up point as it had bin attempted delivered at one time but that’s my fault due to my work,I picked my item up from the pick up point an brought it home,no issues,now it’s bin sat dormant doin nothin until today when I wanted to use it for the first time as I planned to use it when necessary,an it failed to work,now I have proof of purchase dates,times etc,I’ve watched videos read instructions on how to use it aswell an the Karcher K4 jet wash won’t work for me,hope ya can help,thank you
Fantastic – replaced a 10 year old Bosch which was on its last legs. Cleaned a large driveway covered in moss in an hour. Only issue, like all of them, is they aren’t really easy to move and the hose will never go back the way it’s intended but still a great machine
All work fine, really I use only twice, but everything was how should be.
I had another pressure but as it got older it was hard to get accessories for it. As Karcher is more or less the industry standard for home users, I plumped for this. I needed to do the guttering, so the K4 is the best compromise, it has the required power. It’s been a joy to use. A little bit fiddly on the initial assembly, but once put together easy to use. I sorted my guttering problem with the pipe and guttering kit. It cleaned the paving down the side of the house, which was very dirty and moss bound without a problem, looks like new. Very happy.
I reviewed this jet wash on you tube, there’s a guy who does an excellent review, and having had Karcher products before went for the next level up from the one I had last….Boy i’m so glad I did, I wasn’t disappointed it’s great it does everything I needed, I have used it on my motorbikes (it can lower the pressure, the LCD control shows you) to our cars, the foamer you get with it is brilliant it is just like a snow foam gun (no need to buy another attachment as this does the perfect) it cleans the drive brilliant, just one thing that I didn’t like was because of the power doing the driveway I always get wet legs, I did cure this and bought the Krcher T 350 Wide Area Surface Cleaner this keep the over spray down and no wet legs…..all in all I love it.
Had a K2 that died after around 7 years. This was the replacement and well pleased with it.
Great bit of kit but hose is a little bit short, so I’ve ordered an extension hose to save moving around
Am happy with it. Cleans cars, walls, patios to a good standard.
Had a good look round before deciding on this model from the Karcher range and I am not disappointed.
A considerable improvement on the model I had for several years and really good to be able to wheel it around with ease and generally it is all that much easier to use. Really pleased with the purchase.
Little bit of a fiddle to put together, have to make sure pipes are tight to avoid a leaki.
Does the job very weill.
Instructions are poor and heavy than Karcher make out
Either way still better than the K2 and good value
It was difficult to put it together. Instructions could be better. The hose pipe is very stiff and difficult to bend and put around the attached hanger. A more flexible material which can withstand pressure can help. Very heavy equipment so a foldable handle which could go up when pulled just like a suitcase could be better. Otherwise good product, it thoroughly cleaned my patio. The patio cleaner liquid should come with the product.
Pressure washer does what it says in the box and is powerful enough for my needs. I had experienced a problem when the washer was delivered with damage on the casing, possibly in transit. However the problem was resolved within two days with the damaged item being uplifted one day and the perfect replacement delivered the next. Great service.
First time purchase of a pressure washer. Does everything that I want and has plenty of extra equipment to purchase if wanted. Recommended
The pressure doesn’t seem as good as my last K3.575 Karcher at 11MPa but the K4 is supposed to be 130 Bar i.e. 13MPa.
Also there is an LED display on the handle which is absolutely superfluous as you don’t look at it when you’re directing the nozzle at the target. It’s a gimmick which suggests to me Karcher are more interested in marketing that the engineering.
Had to replace the motor on my last one and then it just failed after about 5 years. Hopefully i’ll get my money’s worth out of this one. It does the job I suppose. [Car washing and patio cleaning]
An excellent item that needs little reviewing!
If you want a good pressure washer for cleaning patios and your car, this is great. The pressure is constant and does not drop – the interchangeable lances offer excellent control of the spray. The ability to go from hard, medium and soft pressures is excellent, although I just stayed on hard as that was most effective!
A definite purchase and worth the cost!
This item is very well used. I think pressure washers should part of every household tools.. I could not do without it.
Not user friendly with all the power cable.Not easy to use with the cables all over the place.
Well I put this together without instructions it’s easy to use and does a great job cleaning the patio after the winter.
Very powerful for its size excellent for cleaning the car drive and the Garden patio prior to purchasing this one I had an industrial unit which this one replaced Apart from the length of the hose on the Lance Which I could buy an extension for everything else I’m very happy with
Great pressure washer! My only slight gripe is the high pressure hose is very stiff and unruly, more so than my last pressure washer (Draper)
Easy to assemble and very easy to use. No point going cheap on a pressure washer. Made very light work of my patio and made it look like new. I even managed to get my son to clean his car as it was so easy and he too was well impressed where he also discovered that his car was actually white!!
A superb replacement/upgrade for my K2. The only possible negative so far is that the extension to lance are not backwards compatible.
Excellent piece of machinery. Three levels of power. Great all rounder for the car, motorbike, patio slabs and garden furniture.
Very good in cleaning my flag areas to front and rear of my property
Quite heavy and you have to be careful not to kink the hose, goes through detergent very quickly if you use there own bottle
Works very well
Plenty of power easily controlled
but I was expecting to get the plastic bottle that clips into the top with it
The 6 metre supplied lance hose gets kinked up very easily
I bought a 10 metre one , non karcher and it has a swivel connection so doesn’t. Kink up
Never used a pressure washer before so wasn’t sure what to expect but this has done an absolutely brilliant job of cleaning the block paving in my front garden and pavement.
I didn’t have any detergent but all the dirt and marks came off extremely well without. I was loathed to use detergent anyway as the paving is so close to flower beds.
Only thing was the setup. The instructions aren’t that clear and when putting on the bottom basket/rack it wasn’t easy to tell from the diagram that you needed to put the large plugs in then screw them in so I put a screw in first and it fell into the body of the machine and wouldn’t come out so it’s now rattling around in there for ever more! I’m now one screw short for the hose holder on the front so will have to nip to the DIY store to get one. Then I used the incorrect screws for the handle as again, the instructions aren’t clear. I got there eventually but the instructions could do with a clearer explanation of the screws and other bits in the box.
Having said all that, once it was set up I found it very easy to use and am very impressed with the result.
Had the smaller k2? Before this one. Have used it several times now on different surfaces and does a fantastic job. Well worth the extra money for this more powerful machine.
Nice pressure washer. I have had Krcher products for years, and this was an upgrade to my previous pressure washer. Lances are solidly built, works well. ‘Mix’ pressure is close to useless and get more power from the garden hose. At high pressure,it is fantastic. Have to say the hose feed is useless to, same problem with curling hoses like every Krcher washer I have had. Good product but some design issues need recrifiwd in future generations