Torn between buying a KARCHER K7 or KARCHER K4 pressure washer?
Karcher/Karcher manufacture quality pressure washers, with the K7 Premium Smart Control Flex FJ and K4 Power Control Flex reflecting just that. We compared the Karcher K4 Power Control Flex and Karcher K7 Premium Smart Control Flex FJ, analysing features, power, performance, and reviews.
Karcher K 5 Power Control Flex
Best pressure washer pick, beating all comparable KARCHER pressure washers on value and performance.
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Get DealHow K7 Premium Smart Control Flex FJ and K4 Power Control Flex Pressure Washers Work
Karcher K7 and Karcher K4 pressure washers use a 2800 W and 1800 W (Watt) electric motor to draw up water, which is pressurised to 180 and 130 bar, respectively. Water is forced through KARCHER Premium Smart Control Flex FJ K7 and KARCHER Power Control Flex K4 jet nozzle lance, creating a powerful stream of water used to clean dirty surfaces.
The K7 and K4 can clean cars, vans, paving stones, decking, and all types of outdoor items. With 180 and 130 bars of pressure, the Karcher K7 and Karcher K4 are built to blast away stains, grime, moss, mud, and dirt from hard surfaces.
KARCHER K7 Specs
- Pressure Washer Brand: KARCHER
- Model: K7
- Series: Premium Smart Control Flex FJ
- Power(W): 2800 W
- Pressure(bar): 180
- Flow rate(litres per minute): 9.17 l/min
- Hose Length(metres): 10m
- RRP: £599.99
KARCHER K4 Specs
- Pressure Washer Brand: KARCHER
- Model: K4
- Series: Power Control Flex
- Power(W): 1800 W
- Pressure(bar): 130
- Flow rate(litres per minute): 7.00 l/min
- Hose Length(metres): 8m
- RRP: £249.00
KARCHER K7 and KARCHER K4 Motor Wattage and Bar Pressure
Karcher K4 and Karcher K7 pressure washers power is measured by their wattage and pressure (bar/force). Typically, pressure washers range between 1200 – 3000W, with the Karcher K4 rated at 1800 W and Karcher K7 measuring 2800 W.
For bar pressure, the Karcher Premium Smart Control Flex FJ K7 is rated maximum 180 and the Karcher K4 Premium Smart Control Flex FJ has max 130, which is plenty for thorough cleaning.
- Does K7 KARCHER produce cordless pressure washers? – Yes – KHB 6, OC 3, 1.117-220.0, KHB 4-18
- Does K4 KARCHER produce cordless pressure washers? – Yes – OC 3, 1.117-220.0, KHB 4-18, KHB 6
Water Flow Rate
Water flow rate of the KARCHER K7 and KARCHER K4 pressure washer is measured in litres per minute or hours, (l/min – l/h), and informs how much water the machine goes through. KARCHER K7 and KARCHER K4 have flow rates of 9.17 l/min and 7.00 l/min, making them powerful at washing and rinsing.
- K7 flow rate: 9.17 l/min
- K4 flow rate: 7.00 l/min
Hose Length
The high-pressure hose length of K4 and K7 electric pressure washers affects reach. The KARCHER K7 comes with a 10m hose, and the KARCHER K4 measures 8m. Both K7 Premium Smart Control Flex FJ and K4 Power Control Flex pressure washer are compatible with hose extensions if required.
K7 Premium Smart Control Flex FJ and K4 Power Control Flex Accessories
KARCHER K7 Premium Smart Control Flex FJ and KARCHER K4 Power Control Flex pressure washers come with adjustable lance nozzles (varying spray patterns) and are compatible with Karcher and Karcher accessories, including surface cleaners for patios, decking, and driveways, extension wands, brushes, detergent dispensers, snow foam, etc.
- Karcher K7 Supplied accessories: Surface Cleaner, Q Smart Control gun, multi jet nozzle
- Karcher K4 Supplied accessories: G 160 Q Power Control Gun, Dirt Blast Lance, Vario Power Lance
| Brand | Model | Power (W) | Pressure (bar) | Hose (m) | Prices |
| KARCHER | K7 | 2800 W | 180 | 10 | £599.99 |
| KARCHER | K4 | 1800 W | 130 | 8 | £249.00 |
Where to buy the K7? – Buy direct from KARCHER, or see best buy
Where to buy the K4? – Buy direct from KARCHER, or see best buy
Karcher K 5 Power Control Flex
Best pressure washer pick, beating all comparable KARCHER and KARCHER pressure washers on value and performance.
Offers Available
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