Choosing a Pressure Washer
When looking for a pressure washer to buy there are many different things to consider. First you need to understand the
main terms associated with pressure washer specifications:
Pounds Per Square Inch (PSI)
The PSI rating of a pressure washer is the maximum amount of force or pressure discharged by the pressure washer. PSI usually ranges from
1500 - 4000 PSI for the most common types of pressure washers.
Gallons Per Minute (GPM)
A unit of volumetric flow rate. GPM usually ranges from 2 - 5.5 GPM for most brands.
The power rating of the engine is measure in Horsepower. The common HP ranges for pressure washers are 6, 7, 9, 11, 13, 16, 20 and 24 HP
Portable units are typically places on a 1-1/4" inch steel frame and have pneumatic wheels for easy, all
terrain maneuvering. Some of the common design styles for a portable unit are the roll-cage design and the hand truck model.
Skid- Mounted units are usually mounted on a trailer so they can be taken into remote locations and draw water from a trailer-mounted water
tank . The pressure washer is typically placed on a 1-1/4" powder coated, steel skid frame.
Hot Water Units
Hot water pressure washers are best used for industrial jobs where significant amounts of oil or grease are
present. These units have a burner or heater attached that can heat water up to 200°F. Heat is one of the most important elements of
cleaning. The high temperature of the water, combined with chemicals helps to emulsify the dirt, grime and tough stains while the
water pressure breaks the particles loose and carries them away.
Some of the main uses for hot water units are parking garages, restaurants, construction vehicles, and driveways with oil stains.