K 4 Power Control Pressure Washer, Pressure: max 130 bar, Flow Rate: 420 l/h, Area Coverage: 30 m²/h, Water Filter, Weight: 11.5 kg, High-Pressure Hose and Gun, Dirt Blaster, Spray Lance

This is our second Karcher we had the other one over 20 years the cleaning power is fantastic and happy now I bought the flex pipe good on cars, paving slabs and bricks recommended

A really good robust item as you would expect from karcher. Its not that heavy to move about as there are wheels to help get you moving. Its pretty compact and not some huge heavy beast that needs to be lugged about. It has bags of power and can easily clean a huge amount of decking that I have with ease. Make sure you have the correct extension on or you will cut holes in the wood, and yes I did. Very easy to put together. A couple of screws and snap on plates and you are good to go. The only gripe I have is the hose. It is stiff and the work of the devil, and impossible to roll up. Just change the hose which is readily available. apart from the hose I would definitely recommend it. One last thing. Make sure to register it as you will get a five year guarantee for peace of mind.

The pressure washer is fine, the hose is way to inflexible and has horrible deformation that makes it want to stay looped up. Ideally budget for a replacement rubber hose. I bought the patio cleaner too.. that a little brittle and the plastic broke pretty soon as small stones bounced around inside. I bought replacement spay heads that are brass... Cleaned the patio pretty well though

Great bit of kit...is it worth the money,probably not as cheaper jet washers do the same job..its the name that sells it..so if you like brands this is probably the one to get if you want a jet wash.otherwise RYOBI is a good choice

The Kärcher K4 Power Control Flex is an excellent mid-range pressure washer that delivers impressive cleaning power without being overcomplicated. Setup is quick, and the Flex anti-twist hose is a real upgrade, making it far easier to move around without constant tangling. Cleaning performance is strong — it effortlessly lifts built-up dirt, algae, and grime from patios, driveways, and decking. The Power Control system is genuinely useful, allowing you to adjust pressure easily for different surfaces and avoid damage. Build quality feels solid, storage is well thought out, and the machine is stable in use. Noise levels are reasonable for its power, and water consumption feels efficient. Overall, this is a well-engineered pressure washer that balances power, control, and usability extremely well. Ideal for regular home maintenance and excellent value for the performance it offers. Highly recommended.

I used to own the Karcher K3, and last year I upgraded to the top-end K7, which turned out to be a mistake. It was far too big, heavy, and expensive, and the fancy tech on it caused more trouble than it was worth. Mine started cutting out intermittently, which was frustrating given the price tag. I ended up returning it and decided to take my time finding a better balance of power, reliability, and simplicity. That’s when I settled on the K4 Power Control Flex, and I can honestly say it’s the best middle ground in the whole Karcher range. It’s powerful enough to clean both cars and patios with ease, and it’s far lighter and less bulky to move around. The pressure is more than enough at 130 bar, and the spray lance gives precise control without any gimmicks. The 8-metre flex hose is a good length too, so you’re not constantly dragging the unit around. The Plug ’n’ Clean system is handy for quick detergent changes, though I prefer using an external foamer for more control. I’ve used this on my patio once and washed my cars three times since October, and it’s been faultless. It feels well-built, runs smoothly, and is easy to store when done. At roughly a third of the price of the K7, this offers brilliant value. It does everything most people need, without the overcomplicated tech that can go wrong.

I purchased the Karcher K4 Power Washer with the Home Kit package. The base model comes with a Dirt Blaster lance and a Spray Lance. The additional Home Kit adds a T5 surface cleaner and a bottle of facade cleaning liquid. A relatively simple assembly is needed before the pressure washer can be used - for which you will need a cross head (Philips) screwdriver. Assembly took about 20 minutes for me. There were no printed assembly instruction in my box, however there was a reference to a Karcher mobile app to download, which included step-by-step instructions. The T5 surface cleaner attachment can be used to clean a patio / stonework surface without creating as much mess as using a standard lance, as the water spray is covered by the attachment. I initially used the T5 surface cleaner attachment along with the cleaning solution. I could definitely see a marked improvement in the surface, and it did work well reduce the mess. However, you need to move the attachment relatively slowly so that the water nozzles covers all of the surface. I am not sure how much difference, if any, using the facade cleaning liquid made for the pressure wash. Depending on how clean the surface is to begin with, this may be sufficient. However, for my clean, once I had performed a single pass with the T5 surface cleaner, I needed to make a second pass with the high powered lance to remove any remaining dirt, moss etc. Overall I am very happy with the results of the power wash and I would recommend this item. Just some other things to consider, that in addition to the power washer, I also needed to buy an extension power cable (rated for outdoor and splash proof), as the supplied cable and lance lengths were too short to cover the length of my garden. I also needed to purchase some Kiln dried sand to re-sand the paving the next day once it was all dry.

Great pressure washer! Powerful enough for the driveway but gentle on the car with the adjustable settings. The hose is a bit stiff, but overall it makes cleaning fast and easy