Pressure, in bar, breaks the bond between dirt and the surface. Flow, in litres per minute, carries it away. For mud and heavy site dirt, flow does most of the work, so compare both figures rather than pressure alone.
Hot or cold water
Cold water machines handle mud, dust and general cleaning. Hot water cuts through oil and grease much faster, which suits plant, vehicles and workshop floors.
Water, power and run-off
Check the water supply can keep up with the pump demand, and whether the machine runs from an engine or needs a power supply. Wash water carrying oil, silt or chemicals must not enter surface water drains, so plan where it will go before you start.
Common questions
Which matters more, pressure or flow?
Both. Pressure loosens dirt and flow washes it away. For mud and site dirt, flow is often the bigger factor.
Do I need hot water?
For oil and grease on plant and vehicles, yes. For mud and general cleaning, cold water is usually enough.
Where can wash water go?
Not into surface water drains. Contain it, or discharge it to the foul sewer with the relevant permission.
Which brands do you stock for Pressure Washers?
We supply Pramac and DyMac. Ranges vary, so check the brand page for the full listing.