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 |
The Karcher K4 pressure washer is a very impressive piece of equipment, particularly compared to our very old similar version which needed replacement. We already have various items from Karcher and know the brand is excellent. On this occasion I must also mention the seller, we had a couple of minor issues and contacted the company, they responded and sorted things immediately to our complete satisfaction. I can only compare such high calibre customer services when dealing with John Lewis so highly recommend and would buy again from iBuyTech-UK.
The product was easy to use. But the assembly manual not very clear. Unfortunately, the carry handle was easy to crack because it was not use the heavy duct plastic. It was broken when I used in day one.
The machine did not work as it was missing the small clip which held the hose to the pressure washer.
Rather than return the machine I purchased a clip on line.
So much for the assurances that the machine had been removed from it original packaging to ensure that a pre-delivery inspection was carried ou
The only disadvantage of the pressure washer is that the hose tangles. I’m planning to buy the anti twist adapter (20) or a new hose (50). Also, the hose is too short, so 10 or 15 m would be better.
If you don’t have experience with a pressure washers, here is what I have cleaned with it so far: car, bins, shed, patio, path, concrete, storage boxes, parasol, stripped old paint.
For car, I got a separate foam lance.
Overall, the performance is great – I wanted K4, as it has water cooled engine – you can use it longer.
The k4 home pressure washer is the best on the market, used it as soon as it arrived. Did a great job on getting the garden and driveway looking clean. The right size and power for you to use yourself. No longer have to pay a ridiculous amount each time to pay someone else to do a job I can easily do myself.
I recently purchased the Krcher K 4 Power Control Home high pressure washer with the hope of being able to tackle some tough cleaning jobs around my home. The added feature of intelligent app support was a real selling point and the home kit was a nice bonus.
Out of the box, the Krcher K 4 Power Control Home looked great and was easy to set up. The high pressure washer was well designed and felt sturdy while being used. The intelligent app support was an added bonus which allowed me to control the pressure of the washer with my phone, and made using the device incredibly convenient.
The Krcher K 4 Power Control Home was able to tackle tough cleaning jobs with ease, such as removing stubborn dirt and grime from my patio and garden furniture. I felt confident using the high pressure washer, knowing that I was in control of the pressure and intensity of the water flow.
However, I did have an issue with the Surface Cleaner attachment that was included with the Home Kit. Sadly, it broke during its second use, which was disappointing and frustrating. Although I was initially impressed by the Krcher K 4 Power Control Home, this experience did sour my opinion.
Overall, I can say that the Krcher K 4 Power Control Home high pressure washer is a great tool for tackling tough cleaning jobs and the intelligent app support made it incredibly user friendly. However, it’s important to be aware that some of the included accessories may not be as durable as you might hope.
I found this very powerful compared with previous electric pressure washers that i’ve used. It does a really good job on everything I’ve tried it on, ranging from decking, to walls to cleaning the path and patio using the T5 patio cleaner. For non commercial use I doubt many will need anything more powerful than this.
I’ve seen a few reviews on here with regard putting together the Karcher Power washer and how difficult it was. I’m no DIY expert but after downloading the app it couldn’t have been easier. Took me no more than 20 minutes.
* great piece of kit, super powerful with lots of accessories (see the before and after pictures of my patio!)
* patio cleaner is a real highlight, very impressed with how effective this is
* Hose reel is nice and long, as it the plug to turn power on
* The app is a real plus, can be difficult to use initially, but once you get your head around it, it makes cleaning your home/car much easier and helps produce great results
Cons:
* hose is very stiff
* setting up the machine can be difficult, use the app instead of the booklet provided in the box!
* had a lot of trouble getting the hose into the nozzle at the start, okay once I got going but really had to fight it
* spray gun absolutely eats through the detergent – I’d recommend buying another brand, much better options out there!
I have had three Karchers over many years and i like them because they are reliable
The only gripe i have is the pressure hose which is a real pain and it doesnt have to be.
Just go on line and look for recommended upgrades. Its well worth th emoney to get a longer and more flexible hose.
Ive looked at other pressure washer but never felt the need to change
I found attaching the lances very difficult at first until I discovered that before twisting the two parts together one has to press the end firmly down on the ground before the parts will engage.
Glad to say that after all this the performance of the washer is excellent. I found the best approach is to use the patio cleaner first to shift the dirt. It does use a lot of water. Then I used the variable lance to move most of the debris and dirt onto soil or a drain. THe variable lance does a pretty good job of cleaning when set to ‘Hard’ but doesn’t remove weeds, lichen or stubborn stains/dirt. You need to use the high powered lance. Be warned it kicks up any remaining mud or dirt. The first time I use it I was covered in spatters and had to wash my face and hair. Thereafter I dressed in full waterproof gear and wellingtons. Also be careful near windows as it throws spatters several feet in the air.
The water supply hose to the spray heads is too stiff and remains in coils: it would be so much better if made with a more pliable material. It gets tangled repeatedly making gate unit awkward to move.
Overall I’m pleased with washer but think it could be better with a few modifications.
UPDATE 28 April 2023
I mention above that the hose that links to the attachments is infuriating in the way it keeps coiling and tangling. I’ve found a way to reduce this by laying the hose flat and completely stretched and leaving it for a day or so. I guess that if done in hot weather it would be even more effective as I’ve found for plastic garden hoses. Even better if water is left in the hose as it will get hot in the sun and further soften the plastic in uncoiled state. Good luck!
Pull up handle is a bit flimsy but good enough.
Powerful with a selection of heads. Tried it with the rotator on an old garden chair as an experiment. Tore the fabric.
Quite a bit of assembly required. Straightforward though.
USE THE APP FOR ASSEMBLY much clearer. The instruction book is next to useless and the PDF is just the instruction book.
Pipe is stiff and inflexible. It would be better if rubber and flexible.
not normally one for apps, but this one was actually really useful. It also provides step by step instructions for each type of cleaning and tells you which attachments and key strength to use.
The machine is very easy to use and it’s simple to change attachments. I used the patio cleaner attachment which was fantastic and took off years of lichen, moss and dirt in seconds with no scrubbing needed. It really was so easy. My patio looks amazing. The specific patio attachment was well worth it, although just the normal jet would have also done the job it would have taken a long time to do the large area.
Haven’t yet used the car attachment but looks very easy also and am sure it will also give great results.
As previous reviews take care in worn areas, the pressure was so high it took out some (already damaged) grout between flagstones but I was expecting this and it’s no drama to repair, my patio still looks better.
Seems solidly built and is easy to move. Whilst it’s heavy it’s not unmanageable. The wheels and telescopic handle are good features. Storage net is a little too small to hold the power cable but that’s the only negative I can find.
Definitely worth the money
As for rest of the accessories and Krcher shampoos I will not be using them on my car or patio as I don’t want to damage my paintwork or my brick work with something that doesn’t tell you what it contains. I just don’t want to run the risk.
I will use them for bicycles and scooters and outdoor toys and areas that’s not visible all year round.
As for power it’s very powerful and does the job no chemicals needed, makes my k2 look like it’s been used daily for 20 years it’s that powerful. 130 bar is enough to clean a patio and car without damaging it set to the right setting.
My existing Karcher jet washer wasn’t working properly so I purchased this new one. It’s great. Has an extra accessory which stops the water splashing everywhere when jet washing the patio so doesn’t spray all the dirt up the patio doors. Fabulous. It’s easy to wheel and store. Good quality as usual. Also my son is quite happy with my old jet wash which he has been using so all good
Easy to use and bought mine on prime day so had it a lot cheape
Easy to use and bought mine on prime day so had it a lot cheape
Easy to use and bought mine on prime day so had it a lot cheape
Easy to use and bought mine on prime day so had it a lot cheape
Liked product. Solid build but heavier than thought. App helps ease set up but not so easy to get settings to work. Liked all attachments and on highest power it was good.
Liked product. Solid build but heavier than thought. App helps ease set up but not so easy to get settings to work. Liked all attachments and on highest power it was good.
Liked product. Solid build but heavier than thought. App helps ease set up but not so easy to get settings to work. Liked all attachments and on highest power it was good.
I’m only writing this review really to help other people who might buy this and find they can’t get it to work out the box…
You need to attach the device to a conventional hose. However, the increasingly popular expansion hose has an attachment that doesn’t fit. ..
…and annoyingly there is no attachment included. Therefore you need to buy one. Good news is they are 5 pounds and you just search for expansion hose adaptor. Alternatively I’ve reviewed one at the same time as this.
For me this is a big issue, but the power hose itself is great , hence 4 stars
Easy enough to assemble
Easy to use with nice long quick release hose to gun
Various water control via twist nozzle
Down side would be the weight of appliance
A lot Quieter than the last pressure washer I owned
Really easy to assemble & operate. Good value for money too. I use it on our composite decking and it clears any dirt and grime in seconds. The app will advise which settings/parts to use for different surfaces (e.g. cleaning the car, hosing wood or a driveway). 10/10
Excellent product. Used loads and been great. Well worth the price
Krcher K 4 Power Control Home high pressure washer: Intelligent app support – the right solution for heavier soiling – incl. home kit
In the box.
The main washer, hose, nozzle kit, telescopic pressure gun and deck cleaner plus instructions all in a solid box. It comes with full instructions and link to an app which advises you on setting etc. The instructions to set it up are easy to follow. It runs from the UK mains and has a lead with a fitted plug.
Quality.
It is a Karcher so it is robust and well designed. It is easy to manoeuvre. One thing I find annoying is that the hose is so easy to kink which stops the flow of water. They have designed it to be flexible but that makes it soft and easy to twist — some more thought needed here Karcher!
In use.
It is easy to use once connected but the hose kinks so easily it becomes annoying to say the least. It is not too noisy in operation. I have used it on concrete paths and it did a great job at cleaning then up. The deck tool is useful but I do prefer the pressure hose to be honest. This can also be used to get a lot of pressure on heavily soiled areas of paths, decking and patios. The app is useful and a source of advice on cleaning many different surfaces. It is great at getting mud off cars too!
Overall.
A good pressure washer from Karcher with a few design issues like the super easy kink hose. I did eventually replace this with a stiffer third party one which does not kink at all. I have used it a lot and it is very reliable. Worth getting if you need the patio cleaning system included with this model.
I had an old Karcher K2 that had lost power. I decided to buy a new version rather than try to repair the old one – I was amazed by the increase in power compared to the K2 when it was new. The dirt blaster lance is my new toy! I’ve cleaned my patio, my decking and my neighbour’s patio in the first 24 h – it just cuts through the muck. 5/5