Kärcher K 4 Power Control Home high pressure washer: Intelligent app support – the right solution for heavier soiling – incl. home kit
1 CLEVER 2 SUSTAINABLE 3 EFFICIENT 4 COMFORTABLE
Kärcher high-pressure washers: performance classes in comparison
 K 4 Power Control Home |  K 7 Smart Control Home |  K 5 Power Control Home |  K 3 Power Control Home |  K 2 Power Control Home | |
| Pressure | max. 20 – 130 bar | max. 20 – 180 bar | max. 20 – 145 bar | max. 20 – 120 bar | max. 20 – 110 bar |
| Flow rate | 30 m²/h | 60 m²/h | 40 m²/h | 25 m²/h | 20 m²/h |
| Surface performance | max. 420 l/h | max. 550 l/h | max. 500 l/h | max. 380 l/h | max. 360 l/h |
| Max. Inlet temperature | max. 40 °C | max. 60 °C | max. 40 °C | max. 40 °C | max. 40 °C |
| Weight without accessories | 11,5 kg | 17,6 kg | 13 kg | 4,4 kg | 4 kg |
| Dimensions (L x W x H) | 402 x 306 x 588 mm | 458 x 330 x 666 mm | 402 x 306 x 588 mm | 297 x 280 x 677 mm | 246 x 280 x 586 mm |
| High-pressure hose length | 8 m | 10 m | 10 m | 7 m | 5 m |
| Water suction | ✔ | ✔ | ✔ | ✔ | ✔ |
| Connection capacity | 1,8 kW | 2,8 kW | 2,1 kW | 1,6 kW | 1,4 kW |
| Surface cleaner | T 5 | T 7 | T 5 | T 5 | T 1 |
| Weight: | 11.5 kg |
| Dimensions: | 40.2 x 30.6 x 58.8 cm; 11.48 Kilograms |
| Model: | 1.324-034.0 |
| Part: | 13240340 |
| Colour: | Yellow |
| Pack Quantity: | 1 |
| Batteries Required: | No |
| Manufacture: | Kärcher |
| Colour: | Yellow |
| Quantity: | 1 |
Very easy to set up and foolproof cleaning
I have a smaller Karcher power washer and prior to that, I’ve used another brand model for some years. Both worked well; the Karcher I bought to replace a heavier and more bulky cleaner I’d been using for some 15 years. I love the Karcher. It’s lightweight, easy to operate and effective. It cost me less than 100 ( as a lightning deal) so I wondered how or whether this K4 smart washer would compare.
I’m blown away! It takes power hose cleaning to a different level. Firstly, with the App, it miraculously understands the surface to be cleaned and adjusts the strength accordingly. I don’t have to mess around adjusting nozzles or spray width to remove the gunk. But the cleaner tool is incredible. Instead of being splashed by residual spray, this dedicated cleaning head contains all the water and directs it to the area to be tackled. There’s no wet feet or legs from backsplash and it sweeps across paving slabs and concrete, bringing both to crisp new fresh state. If required, a bottle with cleaning solution can be attached quickly. I’ve only used cold tap water and it’s worked very well.
This cleaner is more costly. Is it worth the extra? I’d have to say yes because it takes away much of the manual effort of the smaller and lower powered version. Given the brand, I’m confident that I’ll get year# of use from the cleaner and can add a wide range of accessories I I wish. It’s an all round winner.
Good cleaning but let down by small details
A really good pressure washer set coming with the K4 pressure washer that is suitable for cleaning patios, drives, cars bike etc.
Assembly was more tricky than I expected primarily down to the clarity of the instructions but once I got used to the notation it became more straightforward.
The home kit in this review comes with the great Karcher vario-lance, dirt blaster lance, extension lance and the surface cleaner. It also comes with a bottle of patio detergent that plugs into the the top of the unit.
This is a little disappointing as personally I’d rather have had the foaming adaptor rather than a bottle of detergent that I likely will not use.
The trigger gun is the major change from the last Karcher I owned. This comes with a gauge that indicates to you the type of cleaning that the vario-lance is set for. Its a little gimmicy to me but at least it takes away the worry that you are using too high pressure for cleaning your car.
A big thing is made of the app too. Apart from making registration of your product much easier its really nothing more than an electronic manual showing the how to use the vario lance for your home kit set up and then the “ideal set up” which basically is a selling tool offering add-ons to put into a basket for you to buy direct from Karcher
The mix in with the app and the touchscreen style appearance of the trigger gun did at first confuse me into thinking this K4 is a fully connected “smart” pressure washer but it isn’t – worth noting.
The niggles about this product are small but to me significant.
1) Hose coiling – the design has a hole through which the hose is supposed to go through – this implied to me that the hose could be at least uncoiled from the hook at the back – the reality is not the same it just jams – not a big issue really as most pressure washers have the issue with hose coiling. Just having this design element left me feeling a little let down by its implementation.
2) Trigger gun – maybe its just this unit but the hose was fiddly to attach in and difficult to detach when i realised I needed get rid of a kink in the hose preventing it coming through the slot mentioned in point 1.
3) The app/unit interaction is overplayed and so the reality feels a let down compared to the blurb
4) Electric cord tidy – the cord at the moment is pretty stiff meaning is not so easy to coil up the wire and push in through the opening above the elasticated cargo style net – I resorted to partially removing the net to store it.
While these are small niggles for the price of the unit and the quality I’ve come to expect of karcher I can’t quite give it 5 stars
Works well.
Relatively easy to assemble and simple to use. This is my second K4, after a few years of use I replaced it for the same model. Its used for car cleaning and patio cleaning it certainly works well.
Works well
I had a K4 full control before but it had the plastic connection for the hose which continually popped off when the water tap was turned on. This is the newer model with metal connections and now no issues, much better hose connections stay on. Make sure you get a newer model with metal hose connection. Also this is the Full Control
Model and NOT the smaller Compact K4. All works brilliantly. Would highly recommend.Karcher provide a water cooled motor which allows the unit to be used for a longer period of time without cutting off due to excess heat.
I had used it for every task under the sun ,Boats ,cars.patios,roofs and the block paving drive at the front of the house.
Only fault is that the hose needs to be less plastic and more rubber. Apart from that excellent product. Power great, even gets the 20 year moss off with minimal effort.
My previous, smaller, Karcher power washer developed a leak inside the sealed unit which I assumed would be irreparable. I note in the instruction booklet that an ‘aqua-lock’ connection must NOT be use on the hose connector to the device – could this have led to the ‘leak’ issues on my old model? My only concern now is that my new K4 is very heavy to lift, which must be done sometimes. Time will tell how reliable the K4 is!
Works well.
Relatively easy to assemble and simple to use. This is my second K4, after a few years of use I replaced it for the same model. Its used for car cleaning and patio cleaning it certainly works well.
Works well.
Relatively easy to assemble and simple to use. This is my second K4, after a few years of use I replaced it for the same model. Its used for car cleaning and patio cleaning it certainly works well.
A1 quality , 130 bar is a good pressure but wouldnt go any lowe
The patio cleaner isn’t great , but that depends if you removing heavy moss but its ok on lightly soiked slabs . The hose needs to be rubber and not the very stiff plastic . Its awkward to unwind and constantly wants to follow its natural coil when in use
Easy to setup and use
This is my second Karcher power washer. Works well enough, I like the new pressure indicator on the handle. My only gripe is the pressure hose is like a coiled spring, my last one didn’t have this problem. At the end of the day it does the job.
Decent power washe
Purchased this after my existing power washer died. Researched showed this to be the best in comparison to my much older previous one.
Once it arrived, attempted to put it together – took a little while after figuring out the not fantastic instructions, I used logistical guesswork(!)
Once up and running, works brilliantly, good to have both styles of lances, ever bit as good as the previous one, plus a good carry/drag handle to save physically lifting it.
Only thing that it does offer that I feel isn’t really much use is the option to download an app which suggests power modes to use depending on your requirements.
Very effective tool
Reason for 4* is the crappy hose, but that isn’t the end of the world, performed brilliantly while cleaning both company vehicles, so overall its a worthwhile purchase
Brilliant pressure washe
Good news for anyone thinking of purchasing this pressure washer, I received this on time with no damage to the box or anything inside of the box as seen with some of the other reviews ! The pressure washer works flawlessly and is ideal for the car detailing I intend to use it for. over all I have had a very good experience and would not hesitate to buy another one.
Karcher pressure washe
If you want a pressure washer it has to be Karcher. This is a nice powerful model. A-bit of a faff to assemble. At this price you really should not have to put it together yourself but worth the effo
Powerful enough for dirty patio
I need a long hose from the outside tap to reach parts of my drive. The water pressure to the K4 is not the best but this doesn’t seem to affect the power of the jet and it works fine.
Adequately very bright. Suspect battery life.
Certainly illuminates well, even on a dark, rainy, rural night with no road markings. You cab still clearly make out the ditch from the road. Cars dip their lights straight away.
Although, this is the 2nd one of these I’ve had. The first one gave me in excess of 5 Hours at full brightness, this one only 3 Hours.
The 1st one lasted approx 25 sessions of 3 Hour rides. It died due to the on/off switch breaking internally. I did toggle to settings sometimes during my ride to suit the conditions, so my concern would be the durability of it.
Both developed a rattle within their first few uses. This was overcome by undoing the screws on the back and wedging a thin bit of card down the edge of the battery. This will invalidate your guarentee though.
But despite this, I find it value for money and impressively bright.
Karcher Power Washe
This is our second time we have bought this item. but they do last a long time with care. It is brilliant for doing the job it is for. cleans patios, pavers drive ways and everything brilliantly.
Almost perfec
In general, the k4 is an excellent piece of kit for car cleaning and blasting dirt from composite decking, which is why I bought it after my k2 gave up. Sadly, the T-racer from the k2 doesn’t fit but I should be ok with the high power lance. The adjustable lance is a game changer for me as it’s so versatile for different applications. The hose, on the other hand is both brilliant and awful at the same time. The extra length is terrific but it kinks like a demented snake. Apparently the hoses on the k5 upwards are much better and I don’t know why these ‘better’ hoses aren’t provided with the more budget cleaners although they’re hardly budget in the first place. But for the hose, this cleaner would be perfect. Too bad
Completely satisfied
Works really well as a power washer, however, I purchased the soap bottle dispenser separately and tried using it to wash my car as directed. Absolutely rubbish, it used half of the soap bottle in 1 wash. Avoid purchasing the soap bottle as at 6 per bottle it’s not fit for purpose.
Good pressure washer, powerful
Excellent! Very powerful and easy to use, bit of assembly required but if you can build a basic Lego model you can build this!
Hose could do with another meter or two.
Don’t bother with a Karcher snow foam gun it’s not great, buy a dedicated valeters one for the same price.
Does the job well
Does the job well, with a lot less noise than our previous (non Karcher) model.
Does the job well
Does the job well, with a lot less noise than our previous (non Karcher) model.
Does the job well
Does the job well, with a lot less noise than our previous (non Karcher) model.
Karche
here is nothing I dislike about the Karcher,I found it easy to assemble and is easy to use
Karche
here is nothing I dislike about the Karcher,I found it easy to assemble and is easy to use
Karche
here is nothing I dislike about the Karcher,I found it easy to assemble and is easy to use
Does a great job
Found the assembly instructions a bit difficult to follow but eventually used up all the screws provided. I bought this to replace my old Bosch pressure washer which died after 15 years of use. Hope this K4 lasts as long. It’s much quieter than my old washer and more powerful. Cleaned the terrace in much less time. Nice to have the adjustable Lance for car cleaning. Would definitely recommend.
Pleased with purchase
Great product, went for this model as had an older version before, did find the instructions a little confusing and very small illustrations other than that Happy with product and price.
Very Powerful and versatile
I bought this to replace a diesel powered Karcher which no longer fitted my requirements.
Even though this one does not have a hot function, it fits my needs very very adequately
Does the job
Used this several times now. No idea how to use the app with it. I just have it full beans all the time. Pretty sure the app is just a gimmick. But it does the job i expected it to do. Since ive had karchers all my life. My kids keep leaving water in them over winter, freezes and bursts the hose seals. So beware frost with these things.
Nice updated model.
I had my previous Karcher for a lot of years and as usual the model and relevant spares are unavailable. I asked for a recommendation from our local agent and he said the K4 would suit my needs. How right he was it’s excellent, my favourite feature is that it’s self contained and compact. It’s powerful and it’s really superb in my opinion.
Lighter than my old one!
Good Value and recommended and a replacement to my very old one
Lighter than my old one!
Good Value and recommended and a replacement to my very old one
Lighter than my old one!
Good Value and recommended and a replacement to my very old one
Oh that hose!
Love the washer apart from the hose that kinks so easily, difficult to find a replacement.
Brillia
My hubby said best power washer he’s ever had easy to assemble and to use and for how it performs great value for money
Brillia
My hubby said best power washer he’s ever had easy to assemble and to use and for how it performs great value for money
Brillia
My hubby said best power washer he’s ever had easy to assemble and to use and for how it performs great value for money
Excelle
Great purchase. Had to turn it on the lowest power to stop it removing all my glittery grout on my porcelain slabs as it is so powerful. Don’t listen to the negative reviews about assembling just read the instructions properly and it will take around 5 mins to do. First Karcher product I’ve bought really pleased
Amazing!
Absolutely amazing pressure washer. Cleans patio and bricks really well – very easy to assemble and use. The pressure gauge is useful and the attachments are all equally good for different tasks. Patio cleaner attachment is a personal favourite! Definitely recommend.
eliable cleaning powe
bought to replace an older K4 pressure washer, seems just as good, and a bit more thought to the design,
fits the old accessories , dont get the point of the App thats available or the fancy handle display which only works of the back pressure from adjusting the nozzle manually
but yes a good quality powerfull washer ideal for cleaning the car, patio or even the windows and gutters
only downside is having to attach all the parts
My patio is now looking very bright and clea
The assembly instructions are poor for a top of range machine. When assembling I had two screws left over. Once it was up an running it worked great. It comes with a patio and car cleaning solution. Adding the cleaning solution it just a matter of plugging and unplugging it into the machine. My patio has not previously been cleaned for years and was stained with years of lichen and mud but it all shifted quickly. The car cleaning parts also seem to do a good job
Great washe
Takes a bit of getting used to if your new to power washing, but great when you’re up to speed. Used mine to wash motorhome.
Great washe
Takes a bit of getting used to if your new to power washing, but great when you’re up to speed. Used mine to wash motorhome.
Great washe
Takes a bit of getting used to if your new to power washing, but great when you’re up to speed. Used mine to wash motorhome.
Great washe
Takes a bit of getting used to if your new to power washing, but great when you’re up to speed. Used mine to wash motorhome.
Great washe
Takes a bit of getting used to if your new to power washing, but great when you’re up to speed. Used mine to wash motorhome.
Great washe
Takes a bit of getting used to if your new to power washing, but great when you’re up to speed. Used mine to wash motorhome.
Complicated to assemble but powerful.
Had to send the first one back, due to missing parts.
Quite complicated to assemble, if you are a novice.
Powerful device.
Complicated to assemble but powerful.
Had to send the first one back, due to missing parts.
Quite complicated to assemble, if you are a novice.
Powerful device.
Complicated to assemble but powerful.
Had to send the first one back, due to missing parts.
Quite complicated to assemble, if you are a novice.
Powerful device.
We got a returned KARCHER!
It’s tricky to install and ours has a lump out if the wheel where someone tried before us. It’s also scuffed and dinted on the side. Again where some one tried and failed to install it. Would NOT recommend this seller! Not sending it back as the damage isn’t detrimental BUT very disappointed.
I was toying with the idea of getting a power washer for a while and after doing a lot of research between different brands in a similar price range I finally bit the bullet and decided on the karcher K4 premium power control home and car kit pressure washer with hose reel included.
What can I say, excellent piece of kit with all the accessories you could possibly need to get the job done. The washer was easy to assemble it took me around 10 minutes.
I also recommend this kit as it comes with the additional hose reel on the back of the power washer and the other models without the car and home kit do not include this. It really helps when your finished to pack away nice and tidy with no cables sticking out.
So far I have only used the mud blaster attachment to clean the pavers out in my back garden and it did an excellent job of that, light work and they came up like new.
I cannot comment on the rest of the accessories as I have not yet used them all but so far so good. It’s a 10/10 from me offering great value for money.
Pleased with purchase
Have used 4 times now and must admit i’m impressed with the ability of this Karcher, Excellent on cleaning paving and must recommend the patio cleaner (saves so much time) So far very pleased.
Brilliant power washe
This product is as good as is possible have used it a few times and think it is a good produc
Brilliant power washe
This product is as good as is possible have used it a few times and think it is a good produc
Brilliant power washe
This product is as good as is possible have used it a few times and think it is a good produc
powerful and effective works well and saves time , app is useful but clunky.
i bought this to help restore a large area of decking and some car cleaning , on both counts the washer worked very well and the tool for floors was particularly effective on the decking and also didn’t spray water
everywhere the job was completed in just over an hour with effective and pleasing results i expected it to take much longer. the time saved was worth assembling and dismantling before and after the job well pleased.
my other task was car cleaning particularly the alloy wheels again the job was done in record time and with exceptional results the machine will no doubt be used for allsorts of difficult to clean applications. and to maintin the car and decking in good conditio
Brilliant machine.
Had one of these Karcher washers about 7 years ago which was good but unfortunately it started to leak so decided on a new on. Absolutely brilliant washed my block paving come up like new.
Brilliant tool👌
It’s powerful and a great tool to remove dirt and moss from the patio.
Brilliant tool👌
It’s powerful and a great tool to remove dirt and moss from the patio.
Brilliant tool👌
It’s powerful and a great tool to remove dirt and moss from the patio.
Expensive but still grea
Very expensive and poorly packaged in the box, but a great product.
Expensive but still grea
Very expensive and poorly packaged in the box, but a great product.
Expensive but still grea
Very expensive and poorly packaged in the box, but a great product.
Expensive but still grea
Very expensive and poorly packaged in the box, but a great product.
Does what is supposed to do
High pressure water pipe very difficult to “roll” up. Foam dispenser, excellent accessory for car washing
Does what is supposed to do
High pressure water pipe very difficult to “roll” up. Foam dispenser, excellent accessory for car washing
Good Performe
Just bought this pressure washer along with the telescopic Lance extension to clean my guttering and soffits. It all worked fine and did the job as expected, The washer I felt was expensive compared with alternatives at the same pressure level and if I had not needed the lance extension , which I could not find from an alternative make I would have bought a cheaper less well known model which I feel would have performed as well for most of the sort of things I will use it for. Karcher are the market leader and I feel price their stuff accordingly, but in practise probably doesn’t perform any better than cheaper alternatives.
Excelle
Delivery was really fast. I got to work with it straight away, tho there is an element of having to put it together which my son did for me as I’m not good at that kind of thing. Jet washed the patio and was amazed at the results, was previously thinking I’d have to reslab. Very easy to use and manoeuvre. Ideal.
Very easy to assemble and very powerful
Brilliant product – and a blessing when it comes to jet washing the patio and car – simply a great product. I have also purchased additional accessories
A good domestic pressure washed
This is a good pressure washer particularly for patio paving and general washing of furniture. It is quite cumbersome and very heavy. I don’t know why the wheels are so small as to be barely functional especially for those of above average height.
A good domestic pressure washed
This is a good pressure washer particularly for patio paving and general washing of furniture. It is quite cumbersome and very heavy. I don’t know why the wheels are so small as to be barely functional especially for those of above average height.
Great all rounde
Love this Karcher. Downloaded the app and followed the assembly on the app.
So far so good with the use +++++
saves a lot of work, recommended
My husband and I tried putting this together and it took us over 2 hours! Instructions are in black and white pictures and we did not find it very easy to make out the pieces. 20/20 vision would have helped!! Only arrived yesterday and used it this morning on a very, very old patio set and some equally old patio slabs. Very pleased with the patio slabs. The patio set did not come up pristine but it had really ingrained dirt so did not expect it to come up as good as it did. Extremely pleased with this item.
A versatile tool for the home and garden.
This product was easy to assemble Randy excellent to use. The wheels make it easy to manoeuvre the long pressure tube makes it easy to reach what you need. You can vary the pressure from very harsh to light depending on the surface you are cleaning. No drawbacks yet I can see. I’m happy I bought this.
Power at you fingertips
The difference of power settings work for all types of jobs
Power at you fingertips
The difference of power settings work for all types of jobs
Will clean everything
Will clean everything.
from stained patio to dirty car. Very good pressure. Happy with it. Don’t buy anything cheaper or higher than the K4 as this is the perfect pressure for all kinds. You will not be disappointed!
9/10 takes about half an hour to assemble
It arrived on time and was well packed it took me about half an hour to assemble I have not used it yet but so far so good I also agree with other reviewers that it could easily be delivered assembled and also I cant see why Karcher don’t include a detergent bottle? O” and the assembly instructions are a bit poor. But overall 9/10. Well I used it for the first time today drawing water from a water but and I was well pleased it performed perfectly washed off my mountain bike easy and cleaned the back yard concrete it did a perfect job. It could do with a reel for the cable and hose but not a big deal overall 9/10
Does what it says on the box 🗃
Easy to build, instructions are great. Will try it over the weekend.
Does what it says on the box 🗃
Easy to build, instructions are great. Will try it over the weekend.
Does what it says on the box 🗃
Easy to build, instructions are great. Will try it over the weekend.
Happy I chose this one
Instructions not that clear on assembly but able to work out. Works very well and a good choice.
Does what it says on the box 🗃
Easy to build, instructions are great. Will try it over the weekend.
Happy I chose this one
Instructions not that clear on assembly but able to work out. Works very well and a good choice.
Happy I chose this one
Instructions not that clear on assembly but able to work out. Works very well and a good choice.
Happy I chose this one
Instructions not that clear on assembly but able to work out. Works very well and a good choice.
The best thing since sliced bread
This washer is a dream to use better than my old one by fa
The best thing since sliced bread
This washer is a dream to use better than my old one by fa
Karcher K4 is the best high pressure power washer I have used
The Karcher 4 did an excellent job of cleaning my back garden patio and garden path and also my front garden block paving. I have now used it to clean my car and found the attachments very useful.
Good product bit expensive
Overall good product the hose connector would not seal had to fit new seal hence 4star only works fine now
Good product bit expensive
Overall good product the hose connector would not seal had to fit new seal hence 4star only works fine now
Good product bit expensive
Overall good product the hose connector would not seal had to fit new seal hence 4star only works fine now
Karcher K4 is the best high pressure power washer I have used
The Karcher 4 did an excellent job of cleaning my back garden patio and garden path and also my front garden block paving. I have now used it to clean my car and found the attachments very useful.
Karcher K4 is the best high pressure power washer I have used
The Karcher 4 did an excellent job of cleaning my back garden patio and garden path and also my front garden block paving. I have now used it to clean my car and found the attachments very useful.
Karcher K4 is the best high pressure power washer I have used
The Karcher 4 did an excellent job of cleaning my back garden patio and garden path and also my front garden block paving. I have now used it to clean my car and found the attachments very useful.
Fantastic
Best buy ever
No one can beat amazon for this price full kit 233
Great kit makes cleaning so easy
Did my patio in no time
Does the job
As expected the quality is good but not as good as my old one. One of the lances lasted just two days; Amazon replaced it within a week but disappointing that it should have failed in the first place.
The new lance worked well and got the job done. My last Kaercher lasted 10 years – I don’t think this new one will last that long but hopefully I’ll be pleasantly surprised..
Brilliant, as you would expect from Karche
Works brilliant and is such a versatile piece of equipment to have around, can clean near enough everything with it. Even without the cleaning solution it still does a great job, not really noticed too much of a difference between the K3 and the K4 apart from the accessories and the size. With the K3 being a lot smaller than this one. And the power control model only really seems to include better accessories than the older models.
Overall very good piece of kit, well built and will definitely last!
Takes a bit of time to assemble....
This is simply the very best pressure washer you can get – and we have tried a few!
Sadly though, this version is let down by the time it took to assemble. At this price point, I think you should be getting a fully assembled and functioning unit (which would also cut down on the reams of unnecessary packaging. So many fiddly little bits – I nearly had a tantrum doing it!
However, once up and running, it is reliable, and effective, it has made light work of many household tasks.
The quality of the build is so important as we are fed up of purchasing replacements – once you know you need to pressure wash, you just have to have one that lasts.
I particularly like the power this one affords which makes this easy to operate.
Recommended.
Good product.
Instructions for putting it together not great. Does exactly what it says on the box. Very pleased with it operationally. Used it on garden tiles, slabs and garden walls. (raised planter areas). So far seems good value for money.