TL;DR
A PSI rating is the maximum spray pressure a pressure washer can produce, the headline number on every machine from 1,500-PSI electric units to 4,000-plus gas rigs. The rating dictates what surfaces are safe: soft washing siding and roofs needs low pressure with chemical cleaners, while etched concrete and paint stripping demand the top of the scale.
What it means
A PSI rating is the maximum spray pressure a pressure washer can produce, the headline number on every machine from 1,500-PSI electric units to 4,000-plus gas rigs. The rating dictates what surfaces are safe: soft washing siding and roofs needs low pressure with chemical cleaners, while etched concrete and paint stripping demand the top of the scale. Cleaning speed, though, depends just as much on flow in gallons per minute, which the headline figure conveniently omits.
Where it sits in the glossary
PSI rating is part of the Trade jargon group inside the ProFix Directory glossary. Browse every term in this category from the glossary index.
Why Ohio homeowners should know it
This is a term Ohio homeowners encounter when reading contractor quotes, hiring paperwork, or inspection reports. Understanding it well enough to ask one good follow-up question is usually all the protection a homeowner needs.
ProFix Directory keeps definitions short on the index page and saves the longer context — Ohio-specific rules, where the term comes from, and which ProFix tools touch it — for these per-term pages so the term is easy to cite and easy to share.
ProFix tools that touch this term
See also
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