The Best Karcher Pressure Washers Reviews: A Complete Buyers Guide

The best Karcher pressure washers are arguable the market leaders in the pressure washer world and you can find high-quality, reliable pressure washers that will stand the test of time and if looked after last you a lifetime.

Kärcher was founded in 1935 by an inventor named Alfred Kärcher and developed their first hot water pressure washer in 1950.

Fast forward 70 years and Karcher employ over 10,000 people and have annual revenue nearing 3 billion pounds.

We have featured Karcher in our hot water and electric pressure washer guides in the past, they also made a guest appearance in our best pressure washers under £100 guide with the Karcher K2 Compact.

Why a Karcher over any other brand you might ask?

Karcher may be a premium-priced product but you get some great perks if you are willing to pay a little extra.

Not only are Karcher a german based company, offering German engineering, the peak of high-class engineering you also get Karcher’s warranty a guaranteed 24 month

Top of our list and for great reason is the Karcher K7, the newest version of the K7 is the first pressure washer in history to be integrated with an app.

All the settings for the pressure washer are put into the app on your smartphone and then transferred to the pressure washer via Bluetooth. The app also offers a range of helpful tips and tricks for your home and garden from Karcher experts.

The boost mode, which is activated via the gun or the app will release an extra 15 BAR of pressure allowing you to tackle even the most stubborn of dirt.

The deal includes the unit itself, a Karcher T7 surface cleaner, some stone detergent, and a 3-in-1 multi lance. The hose length is a huge 10 meters so you can really reach the harder-to-reach places with little to no effort at all.

You could find that this unit isn’t great for built-up residential areas as it has a working volume of around 81dB but keeping usage to daylight hours should cause any issues.

You can choose the high-pressure level you get from this unit, using the app or the gun, and choose between 20-180 BAR of pressure and with a maximum water flow rate of 600 liters per hour, you can expect to clean around 60sq/m per hour.

You can use the Karcher K7 with the mains water supply or the standing water, out of a pond or bucket if needed.

The K7, with all of its top-notch settings and extras, does make it one of Karcher’s heaviest electric pressure washers at 18kg without the accessories.

If you are looking for a slightly cheaper alternative to the pressure washer Karcher k7 then the K5 Premium Smart Control Home is for you.

Compared to the K7, you’ll likely save over £100 and only be losing a few perks that you get with beefer K7.

You can expect a variable flow rate of 20-145 BAR pressure whereas the K7 tops out at a high pressure of 180 BAR pressure.

The water flow is also 100 litres per hour lower than the K7 at 500 litres per hour. With this BAR pressure and water flow rate, you can expect to be able to clean around 40 square meters per hour of floor space, a considerable drop from the 60 square meters you can expect from the Karcher K7.

Despite the K5 and K7 both having the same dimensions the K5 is actually just over 7kg lighter making it around 12.7kg in weight. Of course, this makes it much easy to transport and maneuver.

The package available includes a T350 patio cleaner, and detergent, the same as K7.

A built-in hose reel to easily store the 10-meter hose, as well as space for all the other parts of the main system, make it great for compact tiding way.

You can use the K5 from standing water or the mains water supply which makes it great for use in hard-to-reach places.

This version of the K5 pressure washer also includes the Karcher Smart Control trigger gun. This allows you to take the recommended settings for your job from the dedicated Karcher app and, via Bluetooth, and automatically put it onto the pressure washer automatically.

The Karcher K2 is a much more affordable pressure washer and great for casual, round-the-home use.

The K2 has some great features, we even carried out a full in-depth review of the Karcher K2 full control when we got our hands on it a little while back.

A Karcher pressure washer is known to be two things, reliable and powerful, and even with the K2’s smaller price tag, it doesn’t disappoint.

Although the app doesn’t control any of the settings for this Karcher pressure washer, it does still give great tips such as what pressure to use for what jobs and great tips for your garden cleaning jobs.

This full control home pressure washer is super easy to use and you can change the type of spray with a simple twist of the lance to adjust the pressure. The best pressure you can get from the K2 is 110 BAR which is great for cleaning cars or bikes.

All this cleaning power comes at a cost of 74dB of noise, which in fairness isn’t too loud and would be fine to use at any reasonable time of day.

This Karcher pressure washer has a 5-meter hose, half the length of the K7 Karcher pressure washers 10-meter hose but remember, the K2 is a much cheaper unit.

You can expect 360 LPH from the K2, plenty for round garden cleaning, and a 5-meter hose that the water comes out of so you have a pretty decent reach for garden cleaning.

The K2 is the perfect Karcher pressure washer for keeping your car, bike, and patio furniture clean and even cleaning your fence panels.

The unit has a telescopic handle so can be adjusted for taller used to avoid as much bending over and easy movement, it also has a detergent suction hose making it super easy to use detergent with the unit.

The K2 is a great entry-level pressure washer and great for getting to know how to safely use a pressure washer and what you can clean with pressure washers.

The Karcher K4 full control pressure washer is another Karcher pressure washer we love and one that we have done a full in-depth review on that can be read here.

The Karcher K4 full control weighs in just shy of 12kg without the accessories, this might seem quite heavy for a pressure washer but the unit’s heavy-duty wheels make it easy to maneuver.

The unit has a moderate water flow rate of 420 LPH put it at brought 40 sq/m per hour of cleaning power. The best pressure you can get from the K4 full control is 130 BAR pressure, great for blasting through driveways and patios.

The package actually includes a patio cleaner and the built-in detergent tank makes it easy to apply and clean concrete flooring. You also get a bottle of detergent included in the box for your first clean.

It has a 6m hose that is easily stored on the back of the unit using a hose reel, keeping it all tidy. There is also a net for storing other bits just below offering great value.

The gun has a LED display on it that controls all of the settings, you will 2 triple A batteries for the gun but your first 2 AAA batteries are included in the box.

The telescopic handle makes it easy to transport and the wheels help if the ground is uneven.

The Karcher K3 is the slightly older brother to the Karcher K2 electric pressure washer.

Fortunately, the price is closer to the K2 rather than the Karcher K5 or K7.

This unit is still pretty heavy-duty with it being tailored toward a cheaper home-style pressure washer. The deal comes with a T150 patio cleaner and a 500ml bottle of patio and decking cleaner.

You can load the patio and decking cleaner directly into the built-in to the bottom of the Karcher unit.

You can expect a maximum of 120 BAR pressure which is a happy medium for the best pressure washers. The maximum water flow rate you can get is 380 litres per hour.

The hose length is 6 meters and can conveniently be stored onboard along with the trigger gun and lances.

The unit itself, without the accessories, weighs around 6.5kg so it’s pretty lightweight for a semi-powerful pressure washer. You will normally find that pressure washers can weigh over 10kg so having one that is easy to move around is a bonus.