Tips for Building
981 W of rated hydraulic power, 88 dB(A) guaranteed sound power, the lowest in the panel, and one of the lowest prices per kilowatt. The motor is a universal motor, not an induction one.
What its figures are worth
- Rated hydraulic power 40 %981 W · 6.5/10
- Price per hydraulic kW 25 %180.5 USD per kW · 6/10
- Sound power LwA 15 %88 dB(A) · 10/10
- Weight 10 %7.9 kg · 8.5/10
- Hose length 10 %7 m · 6.5/10
Every criterion in the scale could be calculated. Weighting: Rated hydraulic power 40 %, Price per hydraulic kW 25 %, Sound power LwA 15 %, Weight 10 %, Hose length 10 %.
Choose it if
- Cleaning next to an occupied house or close neighbours.
- Regular use without going beyond a mid-range budget.
- Drawing from a tank, up to 0.5 m.
Skip it if
- Rated values taken from a copy of the manual, not from a Bosch page.
- Less real power than a K 5 Classic or an AdvancedAquatak 140.
Published specifications
| Specification | Stated value |
|---|---|
| Rated pressure | 92 bar |
| Rated flow | 384 l/h |
| Advertised maximum pressure | 135 bar |
| Advertised maximum flow | 450 l/h |
| Input power | 1,900 W |
| Motor | universal (brushed) |
| High-pressure hose | 7 m |
| Draws from a tank | yes, up to 0.5 m |
| Guaranteed sound power LwA | 88 dB(A) |
| Sound pressure | 74 dB(A), distance not stated |
| Weight | 7.9 kg (without accessories) |
Before you pull the trigger
- Never at a person, an animal or electrical equipment. A jet above 100 bar can pierce skin and inject water beneath it: that is a medical emergency, even when the wound looks small.
- Eye protection and closed shoes. The jet throws grit, joint fragments and moss up to face height.
- Never on old fibre-cement roofing or cladding. Older sheets can contain asbestos, and high pressure releases the fibres.
- A socket protected by a 30 mA RCD, an outdoor extension lead fully unwound, and connections kept out of puddles.
- Render and timber: try a hidden corner first. Old render, crumbly pointing or soft wood erode quickly. Keep the nozzle back and start with a wide spray.
What the maker shows
Frequently asked questions
Where does this machine's score come from?
It is calculated, not awarded. Five measurable criteria are weighted, and each value is mapped onto a scale relative to the other machines in the comparison. For this machine, 100% of the scale could be applied: criteria the maker does not publish drop out rather than being replaced by an estimate.
How much pressure does a patio or a render need?
Look at rated pressure and flow rather than the box figure. For a slabbed patio or a render, rated hydraulic power of around 1 kW, for example 110 bar at 330 l/h, does a clean job; below that, the machine suits garden furniture and bikes better. On render or soft timber, nozzle distance matters, not maximum pressure.
Can a pressure washer work without a mains water supply?
Yes, if it can draw from a tank: most of this panel can, up to 0.5 m of lift, with a suction hose fitted with a filter. That helps on a plot with no connection, using a rainwater butt. Each machine's page says whether the maker publishes it.