32 products, sold by My Tool Shed
All 32 pressure washers in this collection, ranked on specs, value and price. Use the filters to narrow them down.
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A Karcher pressure washer is the machine most of us picture when we think of a jet wash, and the range runs from a handheld that fits in a drawer to petrol machines built for farms. If you're washing the car at weekends or bringing a green patio back to life, you'll find the right size here.
The home K2 to K7 models sit alongside cordless handhelds and the professional HD and HDS range. Not sure which class fits? Our K2 vs K3 vs K4 vs K5 vs K7 guide matches each one to the jobs you have. Every machine is sold by My Tool Shed.
Kärcher keeps things simple. The higher the number after the K, the higher the pressure and flow rate, so the machine gets through more cleaning in an hour. A K2 quotes about 20 square metres an hour, while a K7 quotes 60.
More power isn't always better, though. A light K2 is easy to carry round the garden and fine for garden furniture, bikes and a small patio. But if you've got a long block paving driveway or a caravan to wash, the extra flow rate of a K5 or K7 will save you hours of cleaning.
These figures come from the listings on our site. Bar is the maximum high pressure output and flow rate is the most water the pump moves in an hour.
| Model | Max pressure | Flow rate | Area per hour | Motor | High pressure hose | Weight |
|---|---|---|---|---|---|---|
| Karcher K2 | 110 bar | 360 l/h | 20 m² | Air-cooled | 3m to 4m | 3.4kg to 4.2kg |
| Karcher K3 | 120 bar | 380 l/h | 25 m² | Air-cooled | 6m | 4.3kg |
| Karcher K4 WCM Flex | 130 bar | 420 l/h | 30 m² | Water-cooled | 8m PremiumFlex | 11.8kg |
| Karcher K5 Classic | 145 bar | 500 l/h | 40 m² | Air-cooled | 8m | 5.6kg |
| K 5 WCM Flex HOME | 145 bar | 500 l/h | 40 m² | Water-cooled | 10m | 12.6kg |
| Karcher K7 Comfort Premium | 180 bar | 550 l/h | 60 m² | Water-cooled | 10m | 18.8kg |
The weight jump from the K3 to the K4 is the water-cooled motor. It runs cooler on long jobs and tends to last longer. The machine rolls on wheels with a telescopic handle too, so you rarely carry it far.
Compact and light with the hose stored on the machine. A Classic suits a small garden or a flat with a balcony where storage space is tight.
WCM means a water-cooled motor. Flex models add the PremiumFlex high pressure hose, which lies flat on the ground and winds onto the hose reel without kinking.
Power Control models have a trigger gun with a display, so you can see the setting and link it to the Kärcher Home & Garden app. The newer Comfort range covers the K 4 to the K 7 with the COMFORT!Hold trigger gun. Its 4-in-1 Multi Jet spray lance swaps between dirt blaster, high pressure flat jet, a gentle wide jet and detergent with a twist.
HOME kits add a T 1 or T 5 surface cleaner for patio cleaning. Car & Home kits bring a car brush and shampoo as well, which costs less than buying the accessories one at a time.
Most machines arrive with two lances that click on with Quick Connect. The Vario Power spray lance turns from a gentle spray for car cleaning to a high pressure jet for paving. The dirt blaster nozzle spins a pencil jet in a circle, which is what lifts moss out of the joints on a patio.
The eco!Booster lance on the K 3, K 4 and K 5 eco models is a clever extra. Kärcher says it gives 50% more cleaning performance than a flat jet on the same water and electricity. For car cleaning, our snow foam lances give a thicker foam than the standard detergent bottle.
No outside tap or socket? A Karcher cordless pressure washer runs on a battery and draws water from a bucket or water butt. The OC handheld works at 15 bar for up to 30 minutes on its built-in 7.2V pack, which is just right for muddy boots, bikes and the dog after a walk. The KHB 4-18 PLUS reaches 21 bar on an 18V pack.
They're rinsers rather than high pressure cleaners, so they won't strip a patio. For more choice, have a look at our cordless jet washers and portable pressure washers from other brands.
The HD and HDS machines are built for trades, farms and workshops. The first number in the name is roughly the flow rate in hundreds of litres an hour. The second is the working pressure in tens of bar, so the HD 5/11 P moves about 490 l/h at 110 bar.
Which? tests jet washers too and has a useful guide to choosing a pressure washer if you'd like a second view on bar and flow rate.
Prices change every day, so here's a rough guide. A K2 usually costs between £85 and £130 and a K3 between £140 and £180. The K4 and K5 models sit roughly between £220 and £330, with the K7 nearer £460. Pro HD electrics start around £250, while petrol, diesel and hot water machines run from about £700 to several thousand. Any with a real saving today show on our pressure washer deals page.
My Tool Shed usually delivers on the next working day and takes unused items back within 30 days. Kärcher gives home machines a two year guarantee, which goes up to five years if you register it with Kärcher within 28 days of buying.
The K5 adds pressure (145 bar against 130) and flow rate (500 l/h against 420), so it covers about a third more ground an hour. Choose it if you've got a big patio or driveway.
Yes, every machine from the K2 to the K7 can draw from a water butt with the Kärcher SH 5 suction hose. Fill the hose with water before you switch on.
A blocked inlet filter, air in the pump or a low water supply cause most faults. Our guide to a Karcher pressure washer not working goes through the fixes and parts.
Quick Connect lances and guns fit the newer K2 to K7 machines, but some are made for one class. Check the fit on our pressure washer accessories page, or browse the Kärcher UK range for details.
