Outdoor surfaces in Australian homes accumulate dirt, mould, algae and grime at rates that reflect the climate — warm humid conditions, dust from dry periods and the general exposure of outdoor living. A driveway that takes two hours of scrubbing to clean can be done in 20 minutes with an appropriately specified pressure washer.

Pressure output (measured in bar or PSI) determines what the machine can clean effectively. Low-pressure domestic washers (80-120 bar) suit washing cars, bikes and outdoor furniture without risk of surface damage. Mid-range machines (120-160 bar) handle concrete driveways, brick paving, wooden decking and exterior walls effectively. Higher-pressure machines (160-250 bar) are needed for heavy moss and algae removal on aged concrete or rendering, but require care to avoid surface damage on softer materials.

Flow rate (litres per minute) is as important as pressure for cleaning efficiency. A high-pressure, low-flow machine takes longer to clean a large surface than a moderate-pressure, high-flow machine of similar wattage. For driveway and deck cleaning, a flow rate of 6-8 L/min or higher produces noticeably better results.

The range of nozzle attachments included with the washer determines its versatility. A 0° nozzle concentrates maximum pressure on a small point — useful for stubborn spots but can damage soft surfaces. A 25-40° fan nozzle is the standard for general surface cleaning. A turbo nozzle combines rotation with a narrow jet to increase cleaning effect on tough concrete staining. Soft wash nozzles with very low pressure suit car washing and delicate surfaces.

Browse our pressure washer range online with fast delivery across Melbourne and Australia.