Could the Karcher K4 be the ultimate pressure washer?
It has many of the same features as the K2 as standard, so we won’t rewrite all of them again.
(It includes the same three extensions – lances for different pressure settings.)
The design of the K4 is also pretty similar to the K2, except it is just slightly bigger to accommodate the extra features and power.
The Karcher K4 water pressure can be set anywhere between 20 up to to 130 bar pressure. So it is more powerful than the K2.
The extra power may not be necessary though, it you only have a small garden area to deal with. The power can be adjusted, just like with the K2 using the dial on the front of the Karcher unit or using the adjustable lances.
The more advanced K4 has a water cooling feature for the motor.
This means it is more robust and can be used for longer periods of time.
(That is not to say that the K2 can’t be used for long periods of time!)
This is a unique feature to the K4 and not many other jet washers on the market have such a feature.
Unique LED Screen
When trying to multitask using the Karcher power washer and not get covered in water spray, it can be difficult to accurately select the correct pressure for the surface you are working on.
Or you may forget which level of pressure you are on. (The Karcher is pretty noisy and distracting!)
The unique Led screen on the Karcher handle lights up and tells you exactly what power setting you are using so that you can easily adjust the water flow accordingly.
This Karcher has an led screen to help you figure out the best speed setting for the thing you are jet washing. (You don’t have to worry about accidentally damaging painted surfaces.)
The K4 is slightly larger, so all of the attachments fit neatly into the unit for easy storage.
The handle is adjustable, and the wheels make it easier to manoeuvre.
The larger unit also allows for the detergent bottle to sit inside the unit to feed the water supply when wanting to add a cleaning liquid to your jet washing. (This is way better because the bottle can’t accidentally get knocked over.
The pressure can be selected from 20 to 130 bar pressure which is tough enough for even the worst surfaces you need to tackle.
It is quite bit more expensive than the K2 and doesn’t actually come with all of the additional cleaning accessories, these are sold as additional items with the K4.
The unit is quite large and apart from the retracting handle, the unit isn’t very compact for storing between uses.
The Nilfisk C is an excellent value for money pressure washer.
It does everything you want it to, but without costing a fortune.
The only real difference between the Nilfisk and the Karcher K2 is that there is no patio dome cleaner.
Also, instead of getting two spray lances, you only get one, but it has two detachable end nozzles for different spray patterns. (This obviously makes it a little more fiddly to change heads when completing a project.)
But considering the money saving that there is to be make by opting for the Nifisk over the Karcher, you might just think it is worth it.
One handle with one lance – this has two interchangeable end attachments for jet washing different surfaces.
There is a the option to use a detergent bottle, for adding liquid cleaning products to the water flow. (You don’t have to use a particular branded washing liquid.)
All of the attachments can be conveniently stored on the Nilfisk unit so it can be easily stored away.
It fits all major tap fittings and hose pipe for the water supply – such as Hozelock and Karcher.
Can get 110 bar pressure. This is on par with the K2 from Karcher (which costs more.)
The Spear and Jackson pressure washer is a superior pressure washer, on par with the Karcher K4.
It literally offers everything you could want or need.
The look of the Spear and Jackon model is completely different from all the other pressure washers we have seen.
It feels luxurious, robust and is very high quality. The Spear and Jackson looks more like a race car than a pressure washer.
The Spear and Jackson pressure washer comes with:
The patio cleaner head, a special dome attachments for jet washing patios – so you don’t get lots of spray going everywhere!
A fixed brush – perfect for cleaning car wheels.
The vario lance – so that you can instantly change the water pressure via the handle and lance, instead of going back to the main unit.
A turbo lance, for concentrated areas – perhaps the moss that has been growing on your slabs for years and years might need this attachment!
1.5l Detergent Bottle – for cleaning patios and slabs. The cleaning fluid is mixed with the water flow when on a gentle pressure. This gives you the ability to apply cleaning fluid to a large area quickly and easily. All thats left to do it blast it off when the cleaning detergent has done its thing.
The standard pressure is 110 bar and the max power is 130 bar – this matches the Karcher K4.
The kit contains everything you need to get going straight away.
The unit has robust large wheels, perfect for pulling across a gravel driveway. The handle is at a convenient height too.
You get 7m of hose which enables you to walk 7 metres away from the unit whilst retaining the full water pressure.
Can be used with an outdoor tap, hose pipe or water butt.
Every attachment, including the large patio head can be conveniently stored on the back of the Spear and Jackson pressure washer, so you won’t lose any important bits!
Slightly higher priced than some of the smaller models.
The Bosch AQT 35-12 is a fantastic all rounder, if offers the high power of 130 bar.
And just about every attachment you could wish for.
(Its worth noting that this pressure washer is also available as a simple unit with one spray nozzle – this is around £40 cheaper – so its good if you’re on a budget and only really need if for one or two cleaning uses.)
But if you’re thinking about all the different ways you can use a pressure washer after reading this article, it may be worth investing the extra bit of money and getting the full set of accessories.
The Bosch AQT 35-12 is very similar to the Spear and Jackson model mentioned previously, it also has a similar price tag.
This model has a hard plastic outer shell that will survive and knocks or bumps your shed throws at it.
The handle is extremely sturdy and can fold down. This means the unit is actually really small when you want to store it away.
The Bosch 32-12 comes with 6 different attachments including a brush extension for car wheels.
Hose pipe wise, you get 6m of extension, so you dont have to drag the unit around with you as you use it.
The wheels are strong and stable, for use on all terrain.
There is a Bosch liquid bottle for incorporating the use of detergent when using the pressure washer.
Most of the attachments can be stored away by fixing to the main body of the pressure washer, but not all. There is no room for the larger items – like the patio head cleaner.
The attachments and joints are of course, fit for purpose, but when compared the fittings on the Karcher or Spear and Jackson models, they do not feel quite as robust.
Hi, I’m Mike. I am a keen gardener and I love growing my own produce at home and maintaining my allotment (my pride and joy). I have worked in a garden centre for a number of years and have decided to apply my knowledge online to help you decide which gardening tools are best for you.