While the terms are frequently used interchangeably in everyday conversation, the primary technical difference lies in water temperature. A standard pressure washer uses unheated ambient tap water, relying entirely on high-pressure mechanical force to blast away dirt. A power washer, by contrast, includes an integrated heating element that heats the water to high temperatures, allowing steam and hot water to dissolve grease, oil, and stubborn biological contaminants much faster than cold water alone.
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