Karcher K4 Premium Power Control review
Electric pressure cleaner. Priced at $549.
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Type
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Electric pressure cleaners draw their power from a standard home power plug, while battery-powered pressure cleaners are cordless. In our experience testing these models, the battery life only lasts long enough for small cleaning jobs.
- Electric
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Recommended
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We recommend pressure cleaners with a CHOICE Expert Rating of least 80%.
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CHOICE Expert Rating
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This overall score is made up of cleaning performance (60%) and ease of use (40%).
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Cleaning performance score
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Each cleaner is tested on a concrete path (for our 2021 test) or a sandstone path (for tests prior to 2021). This is a tough test, allowing our expert tester to rate how well the pressure cleaners clean the path. He uses each cleaning nozzle supplied and times how long it takes to clean with each. The fastest time is used as the basis of the cleaning performance score.
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Ease of use score
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We rate ease of manoeuvring, taking into account hose length, unit weight and ease of wheeling or carrying if the unit doesn't have wheels. We also assess ease of cleaning, checking the length of the handle/lance, vibrations and trigger comfort.
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Ease of cleaning score
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Our expert rates ease of cleaning based on trigger comfort, length of the lance and vibration.
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Ease of manoeuvring score
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Our expert rates how easy the pressure cleaner is to move around.
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Noise (dB)
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We measure the noise of the cleaner at the user's position, approximately one metre from the unit. The noise produced by each nozzle is measured and we publish the highest noise level here.
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Year tested
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Due to a change in test conditions, models are comparable according to year tested. We may retest models from previous tests to bring results in line with current conditions.
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Price
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The price we paid or the recommended retail price at the time of testing.
- $549
- Items supplied
- Cleaner, gun, high pressure hose, variable spray lance, rotary action lance, instructions
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Weight (kg)
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The measured weight, including the hose, gun, lance and attachments that are stored/attached to the unit.
- 15.02
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Reach from power point (m)
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The distance from power point to nozzle tip at full stretch.
- 15
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Length of hose (m)
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The length of the hose from the pressure cleaner's body to the nozzle.
- 9
- Power (rated, W)
- 1900
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Water delivery (L/min)
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How much water the pressure cleaner delivers per minute (in litres).
- 6.7
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Claimed water consumption (L/hour)
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The manufacturers' claimed water consumption. We state the 'working' figures (not the 'maximum' figures) as noted in the manufacturer's manual. These figures can also be referred to as 'rated' or 'nominal'.
- 402
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Claimed operating pressure (bar)
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The manufacturer's claimed water pressure at the nozzle, in bar. We don't measure this. We state the 'working' figures (not the 'maximum' figures) as noted in the manufacturer's manual. These figures can also be referred to as 'rated' or 'nominal'.
- 120
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Claimed operating pressure (psi)
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The manufacturer's claimed water pressure at the nozzle, in psi (if we don't have this figure, we convert the claimed operating pressure in bar to psi). We state the 'working' figures (not the 'maximum' figures) as noted in the manufacturer's manual. These figures can also be referred to as 'rated' or 'nominal'.
- 1740.456
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Warranty (years)
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Some manufacturers extend the warranty period if you register the product. This is shown in the table with a "+" symbol.
- 3 + 2
- Country of origin
- China
- Website
- kaercher.com/au/
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Nozzles
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These are the nozzles supplied with the unit. They control the spray of water and each one is ideal for cleaning different surfaces.
- Variable spray lance, rotary action lance
- Trigger-off lock
- Yes
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Detergent bottle
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Whether the pressure cleaner comes with a detergent bottle. This is used to hold the cleaning detergent which the pressure washer mixes with water before dispersing. When we test performance, we only test using water in order to provide directly comparable results, but a detergent may help for some types of stubborn stains.
- No
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On-board tool storage
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Whether the pressure washer can store the various tools/accessories it comes with.
- Yes
- Wheels
- Yes
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Rotary brush
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This is a useful attachment for paths and patios and is sometimes an optional extra.
- No