Garden & Lawn

Best Karcher Pressure Washer Reviews and we compare the K2, K4, K5 & K7

Last updated on April 14th, 2022

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Kärcher Power Washer Reviews

We are certain that pressure washers have contributed greatly to the thorough cleaning processes that we experience today. The pressure washer (as implied) uses pressure to dislodge loose dirt and dust from your home and driveway.

The Kärcher Company is the world-leading pressure washer manufacturer. They have made it their goal to produce resource-conserving products and continue succeeding at it.

Selecting between the best Kärcher pressure washer products is not that hard once you know which features work best for you and how much power you need.

My Karcher K5 AND K2
My Karcher K5 AND K2

My Best Pressure Washer for Patios review looks at a range of washers, some electric and some petrol, some for domestic use and some for professional jobs, some for light cleaning and others for places with really well-worked in grime and moss. We list the essential features of each model and discuss their benefits. Our Buyer’s Guide explains how to make the choice between electric and petrol powered washers, and some numbers to consider.

There are 4 main models of pressure washers, these include their small Kärcher K2 which is great for cleaning off bikes, washing down garden furniture and even cleaning a small car. You then have the K4 and K5 models which are ideal for more intensive jobs and have longer hoses. Also available is the K7 which is a real beast, with a more powerful motor, more pressure and a longer hose as well as a host of other useful features. This is where deciding which is the best for you becomes more difficult.

Karcher K5 Premium smart now how longer 10 meter hose
Karcher K5 Premium smart now how longer 10 meter hose

We have reviewed all 4 models, some of which have more than one variation of the same model (for example the K5 comes as a compact K5 and a full control K5) After much research we name our ‘Best Pick’ pressure washer the K5 Compact as it offers the most features and the best performance, also at the most affordable price.

Below you will find our detailed reviews for each model to help you decide which is the best model for you.


I now recommend the Karcher K5 Premium Smart Pressure washer

Best Pressure Washer For Patio Reviews - Top 6 models we could find


Kärcher K5 Compact Home High Pressure Washer with Home Kit
The Kärcher K5 is a well-built model that can easily handle large cleaning applications and will clean up to 40m² an hour. Features a quick-connect hose and lance mechanisms so you will no longer need to screw the hose onto the pressure washer. The K5 delivers high pressure as well as a high flow rate which will help to facilitate intensive cleaning. An 8-meter hose is also included to make those cleaning jobs easier as constantly lifting and moving the washer is now a thing of the past.

Below are the Kärcher Pressure Washer models which we have included in our review

Here you will find six of the Kärcher pressure washer products that meet our quality standards and performance expectations.

  1. Kärcher K5 Compact Home High Pressure Washer – BEST PICK
  2. Kärcher K2 Home Air-Cooled Pressure Washer
  3. Kärcher K4 Full Control Home Pressure Washer
  4. Kärcher K4 Compact Pressure Washer
  5. Kärcher K5 Full Control Home Pressure Washer
  6. Kärcher K7 Premium Full Control Plus Home Pressure Washer

From the different features and performance specifications being offered, we hope that you will find one that makes you feel satisfied.

Look for a professional pressure washer?Check out my review of some of the best pressure washers for professional cleaning including electric and petrol models

Karcher Pressure Washer Reviews

1. Karcher K5 Compact Home High Pressure Washer with Home Kit


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Kärcher K5 Compact Home High Pressure Washer with Home Kit

The Kärcher K5 Compact Home High-Pressure Washer with its Home Kit is a heavy-duty unit and the winner of our top recommended Kärcher pressure washer. The 2100 watt high-grade, water-cooled motor operates at a maximum pressure level of 145 bar which is high enough to clean even in the most demanding areas, but this model is also compact enough to be easily stored at home. The approximated water flow rate is at about 500l/h which is one of the best water flow rates we have seen from a pressure washer, especially one for home domestic use. Since the motor runs to provide higher output, it needs to be cooled by water in order to elongate user life so it is good to see that Kärcher has opted for the water-cooled motor for this model rather than the cheaper air-cooled motor you often see.

To aid in controlling the pressure, a hand trigger has the option to switch to different pressures depending on the job at hand. This is an excellent feature that is very useful as it can be lowered to prevent damage when undertaking more delicate jobs. The quick-connect ends are a big improvement to the usual screw ends that you see on most models. The trigger also facilitates the easy attachment and detachments of the two different lances that come with this model. Another feature that has easy attachment is the hose mechanism. This mechanism is a time saver due to its simplicity and also prevents the worry of the usual screw type attachments that can be easily damaged.

The unit weighs an estimated 11.5kgs, this is without the attachments, so add a couple of kilograms for the true weight. Although it is not too heavy for most people, it comes with large wheels which make moving it around when necessary a much easier task, especially for those who may struggle otherwise. Together with the adjustable handle, the user can now move the unit without pulling a muscle. The handles are padded to avoid harming the user’s hands and to provide enough grip. All in all a great design making it very mobile.

It comes with a long 8-meter cable which is longer than the K2 and K4  but not quite as long as the hose fitted to the K7. However, we feel that 8 meters are more than enough, even for those larger driveways and patio areas, to use this pressure washer comfortably. To ensure that the hose doesn’t let particles through, the unit is also fitted with a filter which helps prevent damage to the pump.

The model that we reviewed here also includes the Home Kit. This is supplied with a Vario lance, a dirt buster lance, Stone and Façade 3 in 1 Cleaner, a 3/4inch hose adapter and a T 350 Surface Cleaner which is perfect for speeding up cleaning patio and drives as it cleans it up to 5 times faster. It even has a handle so you can use it to clean walls and garage doors. All these features can be used in different instances thus providing value for money especially when you consider it comes with a 3-year warranty. One last feature which we think is great and one we almost forgot to mention, is that can be used in both the upright or lay down position and this is something that the K5 Full Control Pressure Washer cannot do.


  • Well-constructed to handle large cleaning applications.
  • Easy to use hose and lance attachment mechanisms, simply click into place.
  • Higher pressure and water flow help facilitate intensive cleaning.
  • Long 8 meter hose to provide the operator with enough room to clean large areas efficiently.
  • Home kit and accessories can be accessed to make the user’s life easy.
  • Comes with the T350 Surface Cleaner attachment which can clean patios and driveways up to 5 times faster than using the lance.


  • Lacks compartment for storing the lance, therefore, giving the user more tasks to find adequate storage. A simple solution is to hang it on a hook or nail fastened to the wall.

Our recommendation

The Kärcher K5 Compact Home High-Pressure Washer is made for those who need more power than the average user and it is a great alternative to the Kärcher K4 as it has more power and a longer hose.

This unit that operates at a pressure level of 145 bar will effectively handle cleaning walls, vehicles and walkways without any real problems.

Our main grapple with this unit is the lack of compartments to effectively store things. One has to think about storage options for the hose. Apart from that, it is a reliable unit. The surface cleaner has well-constructed and durable handles to help you clean that patio squeaky clean and we like that it can be used on walls as not all patio cleaners have handles to make this possible.

Overall this model offers performance, quality and value for money which helped it win the spot for our top recommended Kärcher pressure washer. After comparing the cheaper K4, we decided it was worth spending the extra cost to get the longer hose and extra power the K5 provides.

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2. Karcher K2 Home Air-Cooled Pressure Washer

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Kärcher K2 Home Air-Cooled Pressure Washer

The Kärcher K2 Home Air-Cooled Pressure Washer is easy to use due to its lightweight construction and it is Kärcher’s most affordable pressure washer. The unit is equipped with a 1400 watt motor that runs efficiently to produce a 110 pressure bar which is only 20 bar less than the more expensive K4 models. The air-cooled washer is adequate for cleaning small patios and drives, small cars, bicycles and any other general cleaning applications.

This model comes with a Vario lance which has a bayonet-style end on the lance, simply twist the end to alter the pressure from low to high. A simple but very effective way to control pressure.

This model comes designed to produce a water flow of 360l/h. This, compared to larger models, may seem inadequate. But due to the size and design of this product, the water flow is adequate to accomplish cleaning small tasks, making it ideal (and affordable) for anyone looking for a lightweight model for smaller cleaning jobs like cleaning bikes off or even a small car.

If you have a stubborn stain that has been glaring at you for a while, you need a model that offers detergent applications. The Kärcher K2 Home Air-Cooled Pressure Washer lets the user suction their preferred detergent into the unit without any problems, making it convenient for all. The only real downside is that it does not have a built-in detergent tank, this can become a problem if you need to constantly move the pressure washer around as you have to also move the bottle of detergent at the same time which can be awkward.

Easy manoeuvrability even in rough terrain is possible. The unit is equipped with durable wheels and a handle so that the user can pull it along. A storage compartment is present in order to store the cable and other essentials you may need, they can feel a little cramped but they do the job.

To add more value for money, this product is presented with a few accessories that could be useful to you. You will find a Vario lance (which we have already mentioned) that will enable water pressure control from low to high or vice versa. A dirt blaster is also provided to help you deal with stubborn areas. The dirt blaster utilises a rotating nozzle to increase the pressure used in dislodging dirt. Last but not least we have a T150 Patio Cleaner to help with cleaning applications on the patio.

A 4-meter hose is supplied in order to provide you with adequate reach when cleaning in a small radius. Also, you will find that this product comes with a 2-year warranty that can be used in the case of any product flaws but it proved very reliable when not overworked so this should not be needed for the majority of us.


  • Equipped with a storage compartment to hold the lances, power cable and hose.
  • Offers value for money due to the extra accessories provided including the T150 Patio Cleaner which makes cleaning patios much easier.
  • The water inlet is designed to have a filter to prevent particles damaging the washer.
  • Available at very competitive prices make it attainable for most people.
  • Lightweight design with wheels making it portable.
  • It can allow for detergent applications to deal with those difficult spots.
  • Comes with 2 years warranty for full peace of mind.


  • Pressure is not high enough to deal with difficult areas.
  • Hose maybe a little short to offer adequate reach in large areas or cleaning larger cars.

Our recommendation

The Kärcher K2 Home Air-Cooled Pressure Washer is effective for those small cleaning applications where you don’t need meters of hose length or very high pressure. It has a 1400 watt motor that runs efficiently, but if it is overworked, you will have issues. 

For the price, the features of this unit are more than adequate and it offers great value for money. If you are looking for a lightweight unit that can take care of simple cleaning applications such as cleaning your car once a week, rinsing off the bikes or even cleaning a small patio a few times a year, then this is the one for you.

The main downside of this model is the hose length, if you have a larger car (such as a 4×4) then you will struggle as the hose length is not quite long enough. If this is something you are looking to clean then we would recommend getting the next model up, the K4 as it offers the extra hose and slightly more power. If you are cleaning off your bikes or garden chairs, this will do just fine and is more than adequate.

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3. Karcher K4 Full Control Home Pressure Washer

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Kärcher K4 Full Control Home Pressure Washer

The Kärcher K4 Full Control Home Pressure Washer can effectively deal with even the most demanding cleaning tasks but at a more affordable price. Although it is more than double the cost of the K2 so read on to see what the extra money pays for. We feel there is a big improvement between the K2 and the K4 in terms of extra features, more power, better and more reliable motor, the longer hose for better reach, better storage, better detergent cleaner application, the list goes on.

The 240-volt motor is water cooled to facilitate overall high performance, this is where a lot of the extra cost goes, water-cooled motors cost much more than air-cooled motors. A motor that runs hot for too long stands to be damaged by all that heat and needs an outlet, this is why air-cooled motors cannot be used for long periods of time. A water-cooled motor will run for much longer due to continuous heat management, simply put they are much better.

Pressure washers come with different pressure ratings. The more pressure produced the easier cleaning will be. This unit comes with a pressure rating of 130 bar which is more than adequate to cover 30m2/h effectively, to give you a better idea, the K2 has an area cleaned rating of 20m2/h, which is a third less cleaning time.

When it comes to water flow rate you cannot ignore this spec as it gives a good indication of how well it cleans. The higher the rate of water flow the more intensive the cleaning process will be. This unit is designed to house a water flow rate of 420l/h which is more than adequate for medium applications.

The trigger is fitted with an LED indicator that shows the current power level setting so you know whether the pressure is set too low or too high, which at the very least helps avoid you pressure washing fragile surfaces on full power and avoids unnecessary damage. As you have adjustable pressure settings from high, low to detergent, the trigger will indicate which pressure you are working at, it is not a major deciding factor but a nice feature to have.

Another nice feature is the onboard storage, this is, of course, a feature of all models but nevertheless, this helps keeps everything neat and tidy when storing away.

Some models are fitted with suction mechanisms in order to dispense detergent. This model offers the option of the in-house detergent compartment. Just plug the detergent unit in and you are good to go. At first, we thought this would be expensive if you had to replace the plugin detergent bottles with Kärcher bottles only, however, they can be refilled so you have the option to refill them with whichever detergent you choose.

Also to help with the cleaning, various accessories have been provided. You have a Vario lance and a lance blaster in order to deal with the difficult areas. You also get a T350 T-Racer surface cleaner with a handle for easy use, again this is one of the better surface cleaners as it can also be used on walls and doors etc thanks to the handle design. This pressure washer is supplied with a 3-in-1 detergent that can tackle most of the dirt around your home so you are good to go out of the box.

For reach, this unit is supplied with a 6-meter hose. This is longer than the previous K2 model, therefore, you won’t have to struggle as much when using with larger cars and patios. When it is time to call it a day, you can pack up the components of the unit, store them in their respective compartments and wheel them away. The durable wheels on this unit, paired with the telescopic handle, (which is also much better than the K2  fixed style handle) makes mobility and storage a breeze. You also get a 2-year warranty that you can engage the manufacturer on if any flaws are detected. Remember, this is a year’s less warranty than the K5 which is our best pick, in our mind we think that this means that Kärcher expect the K5 model to last longer but we have no proof of this.


  • Longer 6 meter hose for adequate reach in difficult areas.
  • Powerful and reliable water cooled motor for longer life.
  • Designed with housing compartments to ensure everything is packed in a compact and neat form.
  • Includes an indicator to let the user know what pressure they are dealing with.
  • Supplied with all the additional accessories like lances and surface cleaner to deal with more difficult areas.
  • Designed with durable wheels and an adjustable handle in order to facilitate easy movement.
  • 2 years warranty for full peace of mind.


  • Detergent dispenser needs an upgrade so as to work continuously and effectively.
  • A bit heavy for some users to manoeuvre around effectively.

Our recommendation

The Kärcher K4 Full Control Home Pressure Washer is a step higher than the normal pressure washer. The water-cooled model is designed in such a way that every feature is well placed to provide a compact unit. Considering that the unit weighs around 11kgs it was only prudent that wheels and an ergonomic telescopic handle are installed and it feels well balanced and stable.

We love that the trigger offers an indicator to inform the user what function they are operating at, again not essential and certainly does not improve performance, but a nice added feature.

Overall, you can rely on this unit for proper cleaning functions aided by the accessories provided. It will cost you a little more coin than normal but it is worth the sacrifice and a big improvement on the K2 alternative. If the K5 is too expensive and not within budget this is a great alternative model to choose without going for the budget model which may not be suitable for your cleaning jobs. All in all, we love the K4 and think it is a fantastic pressure washer, it is just the K5 obviously has the edge.

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4. Karcher K4 Compact Pressure Washer

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Kärcher K4 Compact Pressure Washer

The Kärcher K4 Compact Pressure Washer is another high-performance unit that is reliable. It is a more compact version of the Kärcher K4 we have just looked at with a few small differences, one being it can be used lay down. Powered by an 1800 watt water cooled motor for optimum performance. The motor is equipped with an automatic trigger that lets you choose when to render the motor active, this means it only runs when in use which reduces general wear.

This quality pressure washer is a breeze to move from one place to another. This is due to the long-lasting wheels and telescopic handle. Seeing that it weighs around 11kgs the wheels balance the weight of the unit when being pulled making it easy to move around.

For maximum cleaning, you need adequate pressure. A pressure bar of 130 is adequate to deal with medium cleaning applications which are basically those around the average garden. When it comes to water flow rate, this unit can accommodate a maximum of 420l/h. Paired with the 130 bar pressure, this pressure washer is perfect for applications such as cars and bicycle washing amongst many others. The unit is also fitted with a filter to prevent any debris from the water messing with the pump which can damage it.

Some of the pressure washer models have weak connection systems between the hose and the unit, this is especially true for weak screw type connectors. This model comes introducing an easy to secure and reliable hose connection. The quick-connect saves the user time that could have been used screwing the hose on. We also like that the K4 full control pressure washer also comes with a 6-meter hose that will provide you with all the cleaning reach that you need.

Detergent enabling mechanisms cannot be overlooked since sometimes you need to remove tough stains. For this washer, it employs the suction tube method. This basically lets the washer get detergent from an outside source such as a bottle of detergent. We think this is where this model could be improved as our best pick has the click and go type detergent tank where you simply insert a bottle into the machine. However, the simple suction tube is adequate.

Accessories provided to help with cleaning include a lance and a dirt blaster with a nozzle that rotates. This seems to be an industry standard and they are seemingly convenient when you need more pressure.

To ensure that the unit is compatible with the garden hose, the Kärcher group has provided a 3/4 adapter that you can use to connect the water.

Finally, you get a 3-year warranty which is a sign of good faith in the product presented.


  • Comes in a compact and easy to transport form due to the wheels and telescopic handles and compact design.
  • Ideal for medium sized jobs thanks to its power and longer 6 meter hose.
  • The unit can be placed lying flat with no leaks or short circuiting.
  • Designed with an easy and secure hose attachment system to prevent leaks.
  • Water- cooled motor for overall longevity and optimum performance.
  • Onboard storage for lances, trimmer and hose keeping everything to hand.
  • 3 years warranty for full peace of mind.


  • No problems to report

Our recommendation

The Kärcher K4 Compact Pressure Washer is a great alternative to the Kärcher K4 Full Control pressure washer and is slightly cheaper as it comes without some of the fancy features, one example being the LED control which is supplied on the more expensive model but is not essential.

What we love about this product is the compact fit, its easy hose attachment system as well as the power and build quality. We also like that it can be laid down which means it cannot be knocked over, a problem we have seen with the upright range of pressure washers.

The wheels and the telescopic handle are effective for transportation and this makes it easy to balance the weight of the unit.

If you happen to be in search of a pressure washer that is water-cooled and has less fussy features, then this is the one for you. For a lighter unit that offers more or less the same function, look at the Kärcher K2 Home Air-Cooled Pressure Washer.

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5. Karcher K5 Full Control Home Pressure Washer

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Karcher K5 Full Control Home Pressure Washer

The Kärcher K5 Full Control Home Pressure Washer runs on a 2100 watt water-cooled motor just like the ‘Compact Model’ which won our top recommended model. This pressure washer can adequately cover 40m2 which is slightly larger than what other models can do, with the exception of the K7. This high-performance unit is fitted with a pressurised trigger in order to control the unit. To notify the user of the mode of use, the washer is equipped with an LED indicator. You can tell what pressure you are working with before rendering the unit active.

Handles on any kind of equipment need to be comfortable for the user to access. Short handles may cause the user to stoop which is not comfortable, as we have found with the K2 it is not a major problem because it’s so light, but this is not the case with the K5 model. The K5 pressure washer comes with an adjustable handle and wide wheels to offer weight balance. Without the wheels moving the 12kg unit would be a hassle for some people, so this small but well-designed handle is essential.

The unit is designed to hold all the parts in compartmentalised stations. Your Vario lance, dirt buster lance, trigger, power cord and hose all have a place to park. This, in turn, gives the whole unit a compact and organised form.

For those wondering what the working pressure is, here are the facts. This unit will operate optimally at a pressure of 145 bar and has a water flow rate of 500l/h. Since this unit has a higher capacity it can correspond to larger cleaning applications. The lances provided are adjustable so as to control the pressure.

The hose provided is also longer offering more meters. The longer the reach the easier it is to work without tumbling the washer over which we found to be a problem with the K2. Together with the 8-meter hose includes the extra 3-in-1 detergent, a T350 T Racer Surface Cleaner, Vario lancer and a dirt buster. The detergent can be plugged into the unit instead of the suction method which we prefer and think is a lot more convenient.


  • Aesthetically pleasing design with a durable water cooled motor for full efficiency.
  • The plug-in detergent mechanism for easy cleaning applications.
  • Long 8 meter cable for wider reach when working.
  • LED fitted trigger to notify the user of the pressure level in use.
  • Can cover a wider area due to higher pressure bar and water flow rate.
  • Features compartmentalised areas for easy storage and organisation of all the lances, trigger and hose.
  • 3 years warranty for full peace of mind.


  • Quite bulky to move around.
  • A little expensive.

Our recommendation

The Kärcher K5 Full Control Home Pressure Washer will do perfectly for heavy cleaning applications and is one fantastic piece of kit, in fact, it would have been our best recommended Kärcher pressure washer had the compact K5 model not been cheaper.

In terms of cleaning performance and specification, they are nearly identical but the compact model has the convenient features missing, such as the plugin detergent instead of a suction pipe and the LED trigger. Again these are great additions but not essential which is why we decided to not choose this model as the best pick. Basically, it came down to the price which is an important factor to take into consideration.

Those who are looking for a top of the range pressure washer that looks good can purchase this unit and enjoy the extra convenience you get with this model. We found no major setback. We would consider this the best Kärcher pressure washer for intensive cleaning applications that would be within the budget of most people.

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6. Karcher K7 Premium Full Control Plus Home Pressure Washer

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Kärcher K7 Premium Full Control Plus Home Pressure Washer

The Kärcher K7 Premium Full Control Plus Home Pressure Washer is more than effective, to say the least, and it is probably the best pressure washer available for home domestic use but it comes at a price. However, you get a lot more pressure washer for your money, a bigger motor, more cleaning power, a longer hose, an integrated hose reel, and not to mention the plugin detergent system, LED trigger and 5-year warranty.

It weighs a hefty 17.7kg without the accessories which is considerably more than the K5, and this shows you how much power you can expect from the unit. The 2800 watt motor operates at a maximum pressure of 160 bars, again 15 bar more than the K5, proving to be powerful enough to clean driveways. With a 600l/h flow, capacity cleaning has never been this easy.

Most pressure washers come designed to house two lances. This pressure washer does you a big favour. It combines the operations of the dirt buster, detergent function and the Vario lance all into one unit. The all improved lance has controls that allow the user to select the right settings. The LCD display is situated on the trigger gun to help you control the unit as you continue working.

In the spirit of easy detergent replacement, this unit features a simple structure. You insert the detergent so that it can directly feed the washer. This works better than the suction pipe method. Considering that you have a 10-meter hose you can scrub that driveway spotless covering an average of 60m2/h.

Since it is a hefty motor, there is a need for wheels and a handle. The good thing is that the handle is telescopic, similar to what we have seen on the K5. This indicates that it can be adjusted to suit the user’s needs. The handle is ergonomically designed to provide grip even when the user has sweaty hands. Grip and comfortability are supported.

When you need to connect the unit to your garden hose, a 3/4inch adapter is provided. A filter is also in the washer to prevent unwanted debris from clogging the pump and causing motor damage. Together with this, the package will include a 1L 3-in-1 Stone/Facade cleaner, T450 Patio Cleaner and a home kit for use.

Storage facilities for cords are important since compact storage is a priority for the majority of users. This model is supplied with a cord reel to help you with this problem.

The 5-year warranty will aid in the case that problems arise with the unit.


  • Perfect for large cleaning jobs such as vans, boats, cars, large driveways, patios, garden furniture, walls and more.
  • High performance motor that provides higher pressure to dislodge dirt more intensely.
  • High quality features that can withstand constant use without evident wear and tear.
  • Adjustable handle and durable wheels to balance the weight of the unit.
  • Adequate accessories like an integral lance are provided for easy convenience.
  • Supplied together with a 5-year warranty as a vote of confidence from the manufacturer.
  • 10 meter hose for wider reach.


  • Quite hefty to carry along.
  • Expensive

Our recommendation

The Kärcher K7 Premium Full Control Plus Home Pressure Washer is perfect for those who need a serious pressure washer for cleaning larger areas. The high-pressure unit is supplied with a high-pressure hose that can dislodge dirt very easily. We love that it is designed to house detergent applications and has a much longer 10-meter hose and integrated hose reel which is a big improvement on all the other models that simply have a hook to wind the hose around.

Those looking to spend money on a high quality, durable unit can’t really go wrong with the Kärcher K7. Overall it is a heavyweight unit for a heavier cleaning tasks and it also comes at a heavyweight price, however, if you have the budget you will not be disappointed.

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The Buyer’s Guide

Searching for a good company to trust your with your pressure washer needs may seem daunting. Fortunately for you, there are companies that excel in making pressure washers and Kärcher is one of them.

To select the best unit for your use, you need to understand what the product specifications mean. Once you understand the features and what they have to offer selection will be very simple.

This is basically what you need to understand about pressure washers.

Types of pressure washer

You will run into two types of pressure washers in the market. This categorisation is due to the two powers systems available. Electric pressure washers are light and easy to use without dispensing too much power. The only shortcoming is that with no electricity the unit is rendered useless. When using electric units, the higher the wattage the better as more power is provided for use. The petrol models are effective as they can be used anywhere. They are not limited by cords or heavy work. Petrol units can withstand everyday use without wearing down. They are a bit heavier than the electric models but much more efficient. They might cost more if they are units to be used for commercial reasons.

Size of the washer

The size of the washer that you use affects the space taken up and the pressure that can be emitted. Light duty pressure washers operate below 100bar. Medium duty washers operate on pressure levels between 100-200 bar whilst larger models operate from 200+bar. Depending on how much cleaning you have to do, select the pressure accordingly. The higher the PSI the more you can dislodge difficult debris from your items and cars. Don’t forget the higher the pressure the more expensive the pressure washer is likely to be.

Flow rate

The water flow rate is measured in litres per hour. The more water that goes through the hose the faster you will be able to clean something. The higher the purported flow rate the better for you, especially if you have a large area full of dirt to cover. Most regular units have a minimum flowrate of around 400l/h.

The detergent section

Not all models come fitted with a detergent slot. This can be a hindrance when trying to clean using detergent. You have two options here, you can either select units that acquire detergents from outside sources or ones that use inbuilt systems. The suction systems can prove challenging if you keep having to move the pressure washer around. Most consumers prefer inbuilt systems that can move with the detergent holder even when the unit is in transit.

Hose length

You need a high quality hose to keep up with the constant winding and unwinding. Poor hoses develop breaks along stress points. You want a hose with supple material to withstand stress. The longer the hose the more room you will have to work. We found that most people would need at least a 6 meter hose.

Additional accessories

All top quality washers provide excellent accessories to help the user with the cleaning process. These accessories will differ in use but are essential. In most cases, you find two forms of lances. The vario lance and the dirt buster lance. You can even find a model that combines the two lances in one function. Other additional features are surface cleaners that help you clean without the need for so much water. The nozzles are designed at different degrees for different intensity so be sure to check the nozzle specification. We also have a variety of brushes and detergents being offered. Depending on what you need, you can purchase a unit with the right accessories for you.

Price and warranty

Since all pressure washers offer different features and specialisation, they may vary in price. Basic units can be purchased under £100. Larger units can cost over £500 since they offer a heavier duty service. Look at the work that needs to be done, decide on a budget and try and stick to it. Remember to be keen on the quality of features rather than the quantity of accessories offered. We found a good pressure washer with attachments such as patio cleaners would cost between £200 and £300. Warranties are the tools that manufacturers use to instil confidence in the product. Most washers offer warranties of around 2 years but others can be extended upon purchase. The thing to remember is that the longer the warranty the better for you. Most of the higher end Kärcher models have between 3 and 5 years warranty which is a big plus, as some other manufacturers only offer 2 years on similar models.

Adjustable and storage features

In the case of washers, the only adjustable feature is the telescopic handle. In the case that the user is short or rather tall, they can adjust it accordingly. Check the product description to make sure that an adjustable handle is present. Onboard storage is important as it offers you a place to keep all the lances, triggers and hoses. There are models that offer compartments for every feature available therefore making storage an easy task. The K4, K5 and K7 have this covered but the hose hook on the K2 could be better designed.

Final Conclusion

It’s all a matter of preference when selection is concerned. There are many high-quality products on the market and only the keen-eyed can select the best.

Electric models are especially easy to find but be sure to keep a keen eye for quality. Pick products that offer you accessories and adequate storage features. This is just to make the product more useful to you. Other than that, remember the more power you need, the higher the product specification numbers should be.

We only had one contender for the most lightweight pressure washer and this crown was given to the Kärcher K2 Home Air-Cooled Pressure. This unit is adaptable to working small jobs. Using its 110 bars and a water flow rate of 360l/h, it can only handle so much work. Those who need a quick unit for small jobs such as cleaning the bike down and want an inexpensive price tag, can look forward to using this product.

All in all a good affordable pressure washer which gets the job done and comes with a decent 2 year warranty.

The unit we feel can handle heavy cleaning like a breeze is the Kärcher K7 Premium Full Control Plus Home Pressure Washer. It has a large motor that can support high pressure, which is essential when dealing with highly soiled items. It also covers a wide area at a given time making cleaning a fast process. We also appreciate the multi-functional lance and the other accessories like the surface cleaner.

All these features make the unit brilliant, but what makes it even more amazing is the power that it holds. Probably one of the most powerful pressure washers on the market for home use and it comes with an amazing 5 year warranty.

We hope that this has been one of the informative reviews of Kärcher pressure washers that you have read.

Get yourself a Karcher pressure washer model today and experience cleaning from another angle.

Last update on 2022-03-17 / Affiliate links / Images from Amazon Product Advertising API

Welcome to my site, my name is John and I have been lucky enough to work in horticultural nurseries for over 15 years in the UK. As the founder and editor as well as researcher, I have a City & Guilds Horticultural Qualifications which I proudly display on our About us page. I now work full time on this website where I review the very best gardening products and tools and write reliable gardening guides. Behind this site is an actual real person who has worked and has experience with the types of products we review as well as years of knowledge on the topics we cover from actual experience. You can reach out to me at

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