Head to head
Karcher K5 Power Control Flex vs Milwaukee M18 FH
The Karcher K5 Power Control Flex is a domestic electric pressure washer for patios, cars and outdoor cleaning. The Milwaukee M18 FH is a 18v sds-plus rotary hammer with 4 operating modes.
Last reviewed 13 September 2026
Specifications side by side
| Karcher K5 Power Control Flex | Milwaukee M18 FH | |
|---|---|---|
| Weight | 12.4 kg (without accessories) | 2.9 kg (without battery) |
| Max pressure | 20-145 bar | - |
| Max flow rate | 500 l/h | - |
| Area performance | 40 sq m per hour | - |
| SDS chuck | - | 26mm SDS-Plus |
| Impact energy | - | 2.5 J |
| No-load speed | - | 0-1330 rpm |
| Impact rate | - | 0-4800 bpm |
Sources: Karcher K5 Power Control Flex, Milwaukee M18 FH. Figures vary by model year and options, so check with the supplier before you commit.
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 →Buy or hire the M18 FH if...
The M18 FH is Milwaukee's cordless answer to corded SDS-plus hammers, used by electricians and fixers who want to drop cable and chase without a compressor or extension lead on site. It is aimed at users already invested in the M18 range rather than those buying on price alone.
Full M18 FH specifications →Common questions
What is the difference between the Karcher K5 Power Control Flex and the Milwaukee M18 FH?
The Karcher K5 Power Control Flex is a domestic electric pressure washer for patios, cars and outdoor cleaning; the Milwaukee M18 FH is a 18V SDS-Plus rotary hammer with 4 operating modes.
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