Increasing the flow from 1.0 to 2.0 GPM flushes soil from a surface twice as fast. ![]() The GPM rating is a good indicator of a pressure washer’s power. Industrial cleaning and paint stripping: 4,000 psiĪ pressure washer’s cleaning power is expressed in terms of its flow rate and water pressure.įlow rate, expressed in gallons per minute (GPM), is the amount of water that flows through the machine at any given time.House siding and driveway pavement: 3,000 psi. ![]() Cars, bikes, and grills: up to 1,500 psi.Common household cleaning projects, along with the ideal pressure washer psi rating for each task, include: While it’s possible to use a stronger pressure washer for a lighter task, care must be taken to avoid damaging the material’s finish and surface. Use the psi rating as a tool to help determine if the model in consideration can perform the desired tasks. When shopping for a pressure washer, consider its intended use. Electric pressure washers are a good choice for cleaning everyday household objects, such as cars, lawn mowers, patio furniture, driveways or patios. They are typically smaller, lighter, quieter, and easier to store than their gas-powered counterparts. This, along with the fact that they don’t have to be tethered to a power cord, means gas pressure washers are especially useful for larger, dirtier projects, such as cleaning fences, driveways, and house siding.Įlectric pressure washers typically produce somewhat lower water pressure at about half the flow rate of gas. Gas pressure washers produce more water pressure at a greater flow rate than electric pressure washers. ![]() The following key pressure washer characteristics can help when shopping. With dozens of models to choose from, it’s helpful to have a method to narrow the search. Photo: What to Consider When Choosing a Ryobi Pressure Washer
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