Gallons per minute (GPM) and pounds per square inch (PSI) are two important measurements for pressure washers.
GPM, or gallons per minute, measures the flow rate of water. It tells you how much water the pressure washer is able to deliver in a minute. A higher GPM means the pressure washer can deliver more water, which can make cleaning faster and more efficient.
PSI, or pounds per square inch, measures the pressure of the water. It tells you how much force the water is being delivered at. A higher PSI means the water is being delivered with more force, which can make it more effective at removing dirt and grime.
When choosing a pressure washer, it’s important to consider both GPM and PSI to find the right balance of water flow and pressure for your cleaning needs. If you are cleaning a large surface like a parking lot or a fleet of trucks, you may want a pressure washer with a high GPM and PSI. On the other hand, if you are cleaning delicate surfaces like wooden decks or cars, you may want a pressure washer with a lower GPM and PSI.
It’s also important to note that not all surfaces can handle high PSI, for example, some delicate surfaces like painted wood or brick can be damaged by high pressure and it’s recommended to use lower PSI in those cases.