GREENWORKS G40 vs KARCHER K4 Pressure Washer Comparison

Torn between buying a GREENWORKS G40 or KARCHER K4 pressure washer?

Greenworks/Karcher manufacture quality pressure washers, with the G40 – and K4 Power Control Flex reflecting just that. We compared the Karcher K4 Power Control Flex and Greenworks G40 -, analysing features, power, performance, and reviews.

How G40 – and K4 Power Control Flex Pressure Washers Work

Greenworks G40 and Karcher K4 pressure washers use a 1900 W and 1800 W (Watt) electric motor to draw up water, which is pressurised to 135 and 130 bar, respectively. Water is forced through GREENWORKS – G40 and KARCHER Power Control Flex K4 jet nozzle lance, creating a powerful stream of water used to clean dirty surfaces.

The G40 and K4 can clean cars, vans, paving stones, decking, and all types of outdoor items. With 135 and 130 bars of pressure, the Greenworks G40 and Karcher K4 are built to blast away stains, grime, moss, mud, and dirt from hard surfaces.

GREENWORKS G40 and KARCHER K4 Motor Wattage and Bar Pressure

Karcher K4 and Greenworks G40 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 Greenworks G40 measuring 1900 W.

For bar pressure, the Greenworks – G40 is rated maximum 135 and the Karcher K4 – has max 130, which is plenty for thorough cleaning.

• Does G40 GREENWORKS produce cordless pressure washers? – Yes – GDC40 G-MAX 40V, G24PW, G24PWK4
• 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 GREENWORKS G40 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. GREENWORKS G40 and KARCHER K4 have flow rates of 7.00 l/min and 7.00 l/min, making them powerful at washing and rinsing.

• G40 flow rate: 7.00 l/min
• K4 flow rate: 7.00 l/min

Hose Length

The high-pressure hose length of K4 and G40 electric pressure washers affects reach. The GREENWORKS G40 comes with a 6m hose, and the KARCHER K4 measures 8m. Both G40 – and K4 Power Control Flex pressure washer are compatible with hose extensions if required.

G40 – and K4 Power Control Flex Accessories

GREENWORKS G40 – and KARCHER K4 Power Control Flex pressure washers come with adjustable lance nozzles (varying spray patterns) and are compatible with Greenworks and Karcher accessories, including surface cleaners for patios, decking, and driveways, extension wands, brushes, detergent dispensers, snow foam, etc.

• Greenworks G40 Supplied accessories: Retractable Handle, Wheels, Variable Fan jet nozzle, Patio cleaner, Rotary Nozzle, foam sprayer, brush
• 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
GREENWORKS	G40	1900 W	135	6	£209.00
KARCHER	K4	1800 W	130	8	£249.00

Where to buy the G40? – Buy direct from GREENWORKS, or see best buy

Where to buy the K4? – Buy direct from KARCHER, or see best buy