PRESSURE WASHERS

Pressure washers are powerful outdoor cleaning machines

They produce high pressure water streams while their different nozzles remove dirt, debris and stubborn stains from paths, driveways, decks, vehicles, boats and sheds. They can even clean home exteriors and windows. Pressure washers come in many sizes and pressure outputs and have an array of built-in, on-board features and accessories. Consequently, some are better suited to certain tasks than others. Knowing what you want to use a pressure washer for will help in your purchasing decision.

What to consider Key features
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What to consider

Using a Ryobi pressure washer to scrub down the bonnet of a car

What do you want to clean?

Family cars don’t need a lot of pressure to clean them, but a muddy 4WD will need a lot more. Cleaning a dirty garden path doesn’t require a lot of pressure, but removing oil stains from a garage floor or driveway does. As a quick guide, a large area, or a particularly dirty item will be cleaned quicker and more effectively with a higher-pressure machine.

A Ryobi pressure washer being used to remove moss from dark concrete

How much PSI (or Bar) will I need?

Water pressure is measured in PSI (and sometimes Bar). You can expect to pay more for a higher PSI-rated machine so it pays to buy a model that suits your task and space. Higher pressure models can clean concrete quickly and easily and even reach second storey windows. But too much pressure can damage delicate surfaces, even car paintwork when paired with a 0° nozzle.

A Ryobi pressure washer spraying and washing down bitumen

What is flow rate?

Flow rate, measured in litres per minute (lpm), indicates how much water a pressure washer uses. An average garden tap has a flow rate of around 40-60 lpm, whereas most pressure washers save water by having flowrates under 10 lpm. It’s the combination of flow rate and pressure that makes a pressure washer effective at cleaning. The pressure X flow rate = how effective the model’s cleaning power is.

Features

Recommended angles for getting best results with a Ryobi pressure washer

Nozzles

Nozzles direct the pressurised water produced from the washer’s motor on to the targeted area. Most pressure washers in the market have interchangeable nozzles to suit a variety of tasks.

On-board storage

Look for a pressure washer that stores its various nozzles, hoses and lances on-board. A wind-up pressure hose can be a useful feature.

Cleaning reach

The combination of power cord length (for electric models) and pressure hose length determines the cleaning reach of a unit. The longer the cleaning reach, the more freedom you have to move around without having to reconnect to a power source. Note that some models have shorter cords and hoses than others.

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