Kärcher · the dial against the bundle
Pressure control or the T 5 head — which K 4 should I buy?
This is the clearest either-or in the Kärcher range, and it turns on what you clean rather than on how much you spend.
| Compared on | K 4 Power Control | K 4 FJ Home |
|---|---|---|
| Flow rate | Not stated in the listing | 420 l/h |
| Area performance | Not stated | 30 m²/h |
| Pressure control | Adjustable at the lance | Vario Power lance only |
| Surface cleaner included | No | Yes — T 5 |
| Detergent | Not stated | Suction hose plus foam nozzle |
| Markets verified | Six | Five |
A tick marks the better answer on that line only. Counting ticks does not decide the page — the two verdicts below do, because these machines answer different questions.
Buy the Power Control if you clean several different surfaces in one session — the dial under your thumb is what stops render and decking being cleaned at terrace pressure.
Buy the FJ Home for a terrace, and because it publishes 420 l/h: it is the machine you can compare with anything else on the site.
Because you use it. A control at the machine means walking back, so people clean everything at the pressure that suited the worst job — and that is where most domestic damage happens.
The FJ Home, unless you already own a surface cleaner. A T 5 head bought separately costs a meaningful fraction of the machine.
Pressure dial on the lance · app support · 6 markets
The pressure setting moved to the lance, where your hand already is — and an app you can ignore.
Best for: A household cleaning several different surfaces in one session — a car, then render, then a drive
≈ 200 €
130 bar · 420 l/h · 30 m²/h · 5.7 kg
The first Kärcher that publishes its flow rate — and the number that tells you what the machine will actually do.
Best for: A terrace, a drive and a car, cleaned two or three times a year, where the K 3 would need too many passes
≈ 220 €
