Kärcher K4 Classic: questions before you buy
Yes — on a budget.
The K4's power in a lighter, cheaper machine.
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Is it as powerful as the K4 Power Control?
Yes — same 130 bar and 420 litres an hour, covering about 30 m² an hour. The difference is the gun, the hose length and the extras.
How do I change the pressure?
By twisting the Vario Power lance, not on the gun. The kit also includes a dirt blaster lance for stubborn grime.
How long is the hose?
6 metres — 2 m shorter than the K4 Power Control's, so you'll move the machine more often.
How heavy is it?
Light for a K4 — Expert Reviews put it at about 5.6 kg, easy to carry up steps or to the car.
Does it come with a patio cleaner?
Not the standard K 4 Classic. The K 4 Classic Home adds Kärcher's T 5 surface cleaner and stone and façade cleaner.
Does it have a water filter?
Yes, a built-in filter protects the pump from dirt in the water supply.
Is it good for cars?
Yes, with the Vario lance turned down for paintwork. If you switch between car and patio a lot, the Power Control's pressure settings on the gun are easier.
Should I get the K4 Classic or the K4 Power Control?
The Classic to spend less and carry it easily, if you mostly wash the car and furniture. The Power Control for pressure settings on the gun and a longer hose.
Answers from Kärcher UK: K 4 Classic and Expert Reviews. We don't test products ourselves.