Head to head
Honda Power Equipment WB20XT vs Karcher K5 Power Control Flex
The Honda Power Equipment WB20XT is a gx120-engined 2 inch water transfer pump in carry frame. The Karcher K5 Power Control Flex is a domestic electric pressure washer for patios, cars and outdoor cleaning.
Last reviewed 13 September 2026
Specifications side by side
| Honda Power Equipment WB20XT | Karcher K5 Power Control Flex | |
|---|---|---|
| Weight | 27 kg | 12.4 kg (without accessories) |
| Max pump capacity | 600 l/min | - |
| Total head | 32 m | - |
| Discharge bore | 2 inch | - |
| Engine | Honda GX120 OHV | - |
| Max pressure | - | 20-145 bar |
| Max flow rate | - | 500 l/h |
| Area performance | - | 40 sq m per hour |
Sources: Honda Power Equipment WB20XT, Karcher K5 Power Control Flex. Figures vary by model year and options, so check with the supplier before you commit.
Buy or hire the WB20XT if...
The WB20XT is a general-purpose 2 inch water transfer pump used for site dewatering, drainage and irrigation tasks, valued for the GX120 engine's reputation for easy starting and long service intervals. It is a common item on plant and tool hire depot pump racks.
Full WB20XT specifications →Buy or hire the K5 Power Control Flex if...
The K5 sits in Karcher's mid-to-upper domestic range, bought outright by homeowners for regular patio, car and garden furniture cleaning rather than hired. It is frequently the model UK reviewers and retailers use as the benchmark domestic Karcher pressure washer.
Full K5 Power Control Flex specifications →Common questions
What is the difference between the Honda Power Equipment WB20XT and the Karcher K5 Power Control Flex?
The Honda Power Equipment WB20XT is a gX120-engined 2 inch water transfer pump in carry frame; the Karcher K5 Power Control Flex is a domestic electric pressure washer for patios, cars and outdoor cleaning.
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