Kärcher K 7 Comfort Premium High-Pressure Washer, 180 bar vs Kärcher K 5 Classic Home High-Pressure Washer, 145 bar

Pros

• + 180 bar at 550 l/h, the most cleaning power on this list, adjustable down to 20 bar for render and uPVC
• + Water-cooled 2.8 kW motor - the durability answer none of the universal-motor machines here have
• + 10 m PremiumFlex hose on an integral reel, 2 m longer than anything else ranked
• + Rated 60 m2/h and takes an inlet up to 60 °C, where every other machine here stops at 40

Cons

• − 18.8 kg - more than three times the weight of the K 5 Classic Home below it
• − 9.2 litres a minute is more than many British outside taps will deliver; do the bucket test first
• − 59 Amazon UK ratings is the thinnest owner record on this page
• − Costs more than any other machine ranked here by a wide margin

Pros

• + 145 bar at 500 l/h - only the K 7 above it moves more water, and 500 l/h is what keeps a surface cleaner fed
• + T 5 T-Racer surface cleaner and a litre of stone and facade cleaner included, which is what makes it a drive machine
• + 8 m hose, a twist-to-set Vario Power lance and a dirt blaster in the box
• + 5.6 kg without accessories on an aluminium telescopic handle - a third of the K 7's weight

Cons

• − Kärcher publishes a universal motor here, not the water-cooled unit fitted to the cheaper K 4 Power Control Flex below it
• − No hose reel: the hose stows on the body
• − Inlet capped at 40 °C against the K 7's 60
• − 165 Amazon UK ratings is a thin owner record next to the Bosch machines lower down