Karcher Pressure Washer Reviews: Compare the Best Models

Be the KING of pressure washers. Choose KARCHER. 

When you find the best Karcher pressure washer for you in our guide, you are discovering a whole new way to keep your decking and patio space looking incredible.

It’s time to stop skimping on quality and pick the best. 

We took the top Karcher pressure washer models on the market and put them through our detailed analysis programme for a good 30 hours to ensure that they were able to stand the test of time – and take a good beating from regular use. The results? Well, they are all in this guide. 

But why did we do this?

When you’re picking the best pressure washer, you want to make sure you are getting the best value for money, something that has enough POWER, and fits in with your budget. Our analysis process ensures you get all of that and more. 

Karcher pressure washer review

So, which Karcher pressure washer took the crown and became King? For us, it was the K5 Full Control, a superb model that really checks all the boxes. 

But hey, we know that not everyone will feel the same way about our editor’s pick.

That’s why we have a load of models available for you to take a gander at. 

Karcher Pressure Washers Reviews (In Order)

Karcher k5 full control

1. Karcher K5 Full Control Pressure Washer

Editors Pick Best Karcher Pressure Washer

Key Features
  • Power: 2100w
  • Pressure: 145 bar (max)
  • Power Source: Mains
  • Max Flow Rate: 500l/h
  • Weight: 12.7kg

Presented in the classic Karcher yellow, this chunky pressure washer machine might seem like a weighty addition to your home but is actually surprisingly compact and easy to store away.

Offering smooth wheels and a comfortable handle, you can pop it in and out of the shed with ease. One of the most exciting features is the intelligent LCD controls on the main trigger.

This allows you to select the power setting quickly and ensure the pressure is just right – all at the simple click of a button. Certainly takes a little pressure off you (I’m here all week). 

Following on from this, you get POWERFUL cleaning from other aspects of this karcher pressure washer as well.

The power has an incredible wattage that allows for an impressive 145 bar max pressure alongside a WHOPPING 500L per hour flow rate. Talk about power. Seriously. 

The multi-lance is three tools in one, providing you with variable speeds and pressures that make it suitable for everything from your patio to your car.

The attachments also simply click onto the hose to make life easier, and you benefit from nifty onboard storage

When you have really tricky tasks to tackle, why not make use of the detergent nozzle? This will ensure you get right through the grime and grease, leaving the area looking as though it’s brand new all over again.

All you have to do is plug in the detergent bottle to get started. Maintenance has never been easier, and it’s considered an eco-friendly choice thanks to its low water usage and excellent efficiency.

With filters to prevent sediment build-up, you’re looking at a pressure washer that’s going to see plenty of summer cleaning sessions. Not sure this is quite the right Karcher pressure washers for you, or want to keep your options open? 

While we are firmly set on this being the creme de la creme of Karcher models, we do also have an exceptional budget pick that you might want to look at. It’s just below! 

  • Classic karcher pressure washer design that looks good and is easy to store away
  • Impressive wattage and flow rate to really keep you on your toes 
  • Allows you to switch between cleaning modes with speed and ease
  • Instant start and perfect pressure to get any job done efficiently
  • Intelligent LCD controls that really bring pressure washing into the modern age

Karcher k4 compact pressure washer

2. Karcher K4 Compact Pressure Washer

Our Pick For Best Budget Karcher Pressure Washer

Key Features
  • Power: 1800w
  • Pressure: 130 bar (max)
  • Power Source: Mains
  • Max Flow Rate: 420l/h
  • Weight: 13.5kg

Little and sleek, this pressure washer from Karcher reminds us that some of the best things come in small packages.

That’s certainly the case with this model, and it ensures a lightweight feel alongside a handy extendable handle and sturdy wheels for quick transportation.

It really packs a punch, with a POWERFUL motor that leaves you shocked by the impressive 130 bar max pressure and 420L per hour flow rate.

With this much water pumping out of such a little model, you’re sure to have all your cleaning tasks done in a jiffy. 

The Vario lance and dirt blaster allows you to adjust the pressure accordingly, meaning that you can switch between a sharp blast for the patio and a lighter splash for the exterior of your car (not the interior though, the number of questions asked about that…). 

The handy suction tube for detergent means that you only need to plug the bottle in and use the detergent nozzle to quickly eliminate those tough dirt spots.

Best of all, this Karcher pressure washer can be applied to any surface, which means there is no dirt that’s safe from this heavy-duty cleaner. 

The telescopic handle provides excellent length while cleaning, extending and retracting as necessary while also remaining very easy to store away after use.

Furthermore, the long power cable also ensures you have great reach and radius, for stress-free pressure washing. Maintenance is simple, with self-priming that keeps the dirt and sediments away so that you don’t end up with unwanted build-up.

In addition to this, you also have tools that are easy to clean, all they need is a quick wipe after use and you’re good to go. 

Whether you love our budget pick or just want to see what else Karcher has to offer, we’re sure you’ll love the rest of our Karcher pressure washers selections below.

Let us know which one you end up with, and which you feel is the best of the best.

  • Sleek and compact design with that traditional Karcher touch
  • Easy to use and get set up so that you can start cleaning quickly  
  • Variable pressure so that you can clean any surface you like without worry
  • Handy storage that keeps everything in one place at all times
  • A budget price that reminds you quality doesn’t have to cost a fortune 

Karcher k2 pressure washer

3. Karcher K2 Compact Home Pressure Washer

Our Pick For Best Lightweight Karcher Pressure Washers

Key Features
  • Power: 1800w
  • Pressure: 130 bar (max)
  • Power Source: Mains
  • Max Flow Rate: 420l/h
  • Weight: 13.5kg

The Karcher K2 Compact pressure washer is lightweight and easy to carry around, making it ideal for those who need something small and easy to store so that they can carry out odd jobs around the home.

It is a great entry-level model that offers a compact build with all the power you need for some light work. It’s perfect for use on bikes, cars, and patio furniture.

It is really easy to use, with very few settings or attachments. This goes back to it being an entry-level model and shows how simple it is to use so that even those who have never handled a pressure washer before can find their way around it with ease.

Plus, it is incredibly affordable, so great for those who are on a budget or don’t want to spend a great deal. It’s definitely one of the best-priced machines.

However, if you are looking for a pressure washer that is capable of cleaning large patios, brickwork, or garage doors, then something like the K5 or K7 might be the best bet for you.

Features and Benefits

The K2 Compact has a 1400-watt motor, providing the karcher pressure washer with 110 bar pressure and an impressive 360 litres per hour.

The karcher pressure washer has also been designed with an automatic start and stops function so that it is not constantly using water while you are cleaning. The water inlet filter is also built into the machine, protecting the motor and pump from potentially harmful debris.

It comes ready with onboard storage for each of the tools and accessories that come with this machine. It also has a detergent suction tube, allowing you to draw detergent from a container.

The pressure washer will then slowly draw detergent out and use it when it is being handled at low-pressure levels.

It comes with four accessories, each of which is incredibly useful and easy to use. The dirt blaster is a powerful rotary nozzle that has been designed with a rotating pencil jet.

This provides up to 50% increased cleaning power. The one-way lance is ideal for patios as it provides a constant high-pressure jet.

The T150 patio cleaner attachment is used for the splash-free cleaning of your patio and has the benefit of two flat, rotating jet nozzles for extra cleaning power.

The high-pressure hose measures in at four metres and simply connects to the main unit via the trigger gun (which can be stored in the allocated slot when not in use).

It also has a cable hook, so that when it is not in use the cable does not get left lying around. This handy feature is great for safety as well as tidy packing.

The Karcher K2 Compact is definitely the best Karcher pressure washer for those looking for something either on a budget or entry-level.


Q: Is this on wheels so that it’s easy to move around?

A: No it’s not on wheels but it is very light and compact so easy to move around. 

Q: What is the length of the cable?

A: 5 metres so plenty of lengths to get around the whole of the garden.

karcher k4 pressure washer

4. Karcher K4 Full Control Pressure Washer Review

Ideal Karcher Pressure Washer for Your Patio 

The Karcher K4 Control may not be as light as its K2 counterpart, but it is very portable thanks to the strong wheels that have been included on the base of the model, along with the handle which is easy to grip.

 It is not massively heavy, but the wheels and handle certainly make it easier to transport.

It’s a great pressure washer model for use around your home, thanks to all of the additional features that come with it.

There is even a patio cleaner included, so no odd job will end up left out or forgotten thanks to this comprehensive piece of kit.

It’s very easy to use, with simple settings and quick tool attachment. It certainly makes life a little easier when it comes to cleaning the outside of your home, and it is ideal for use on bikes or cars, outdoor furniture, patios, and garage doors.

However, if you are looking for something a little more compact and lightweight, the K2 Karcher pressure washer compact might be the right model for you. It’s smaller and perfect for cars and bikes.

 Or, if you need something with more power and capability, the K7 is also available. This model is perfect for brickwork, large areas, and vans.

Features and Benefits

The K4 Control has more power than the K2 Compact, providing 130 bar pressure and 420 litres per hour, thanks to the 1800w motor. It can do everything the K2 Compact is capable of, and more thanks to its size and power.

It comes with a Vario and dirt blaster lance, allowing you to vary the pressure by twisting the barrel until you reach the desired pressure.

 The LED display on the power gun is also an excellent indicator with regards to discovering if you have reached your desired power level.

This Karcher pressure washer has high-pressure settings, as well as a low-pressure detergent setting so that it provides optimal performance.

 The plug and clean detergent system is also incredibly efficient and can be quickly replaced with just one movement.

It even comes with 3-in-1 stone detergent, which provides high-quality cleaning performance for stone patios, walls, and facades.

It also comes with the T350 T-Racer surface cleaner, which is the ideal tool for cleaning a wide range of surfaces, including your patio.

It’s incredibly efficient and splash-free, along with having two flat jets on the base for quick and thorough results. It also has onboard storage for the hose, tools, and accessories, so you can take them with you easily.

Karcher k7 pressure washer

5. Karcher K7 Full Control Home Pressure Washer

Our Pick For Most Powerful Karcher Pressure Washer

The Karcher K7 Full Control pressure washer is in the premium price range, but its quality certainly reflects this.

Like its predecessors, it has fully reinforced wheels that allow it to take on most terrains, along with a retractable telescopic handle that has an easy and comfortable grip.

It weighs nearly 20kg, so the reinforced wheels will definitely come in useful. It is the ideal machine for homes that require a lot of power to keep the outdoor areas clean and free from mud and muck.

When it comes to vehicles, it is the perfect machine for cars, vans, boats, and 4×4’s. In terms of the home, it is the ideal model for outdoor furniture, large patios, garage doors, driveways, and brickwork.

However, if you don’t need something quite as powerful as this, then the K4 or K5 models might be a better fit for you.

They pack enough of a punch to keep outdoor areas clean but are also less expensive. They might not be able to cover quite as much space or as many vehicles as the K7 but they certainly do the trick.

Features and Benefits

This is the most powerful pressure washer in the Karcher family. It features an impressive 2800w motor, providing 160 bar pressure and 600 litres per hour of water.

No matter what you need the K7 Full Control to do, it’s more than likely able to get it done. The increased water flow makes jobs quicker, and the pressure causes them to also be more efficiently done.

Like the other models, the K7 has been designed to give you full control over the pressure. The spray gun offers an LED display, letting you know that you have the right pressure setting and power level.

It is also incredibly easy to set up and operate this model, making it perfect for those who are new to electric pressure washers, as well as more experienced buyers.

It has a plug and clean detergent system, allowing the detergent to be replaced quickly and easily with one simple move.

It even comes with one litre of stone detergent. This powerful formula is ideal for stone patios, walls, and facades around the home.

It works quickly to protect the surfaces as well as care for them when in use. It’s a fantastic formula that is bound to leave your stone surfaces looking amazing.

It comes with a Vario lance as well as a dirt blaster, much the same as the K4 and K5. These work simply by twisting the nozzle until your desired setting is reached.

They allow for the pressure to be varied according to the task you are undertaking, and the dirt blaster is perfect for particularly mucky outdoor areas or vehicles. They offer an efficient and comprehensive clean.

The K7 Full Control Karcher pressure washers also come with the T450 T-Racer surface cleaner.

 It has two flat jets on the base to create splash-free cleaning of surfaces such as patios and garage doors. It is able to tackle vertical surfaces thanks to the specially designed handle.

It also has a power nozzle for corner and edge cleaning, so you don’t miss a spot.

It has onboard storage for all the included accessories, as well as a place to store the hose. This makes packing it away more efficient as well as taking it from place to place.

The K7 pressure washer also features a lower centre of gravity for better stability, alongside the Karcher patented cooling system.

The water cooled motor reduces wear and increases the lifespan of the machine, so it will last you for years to come.

To Conclude

Karcher is a brand that many people trust, and it is highly respected for its great quality machines.

Finding the best Karcher pressure washer is no easy task, as each of the models here is exceptional.

A lot of it is down to personal preference and need. If you need something compact that does a good job on your car or bike, then the K2 Compact pressure washer is probably the right way to go.

If you are on a bit of a budget but need something to do some light work on the patio, then the K4 Full Control pressure washer is the best choice you can make.

However, for the bigger outdoor tasks, it’s between the K5 and the K7 Full Compact pressure washer.

Both of these are great for large areas, but the K7 Karcher pressure washers offer more power and are great for those with 4×4’s and boats to hose down.

You’re sure to find the right model for you here, it’s all down to what you need from a pressure washer.

Last Updated on January 27, 2022 by Gemma Tyler

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