What is the temperature of the dishwasher final rinse cycle?

• A. 170-185 degrees F
• B. 180-194 degrees F
• C. 195-205 degrees F
• D. 210-220 degrees F

Answer: (B)

High-temperature dishwashers achieve sanitization through a hot final rinse. To ensure effective sanitization, the final rinse water should be in a range that can reliably kill pathogens with enough contact time—typically 180°F or higher for a defined dwell time (about 10 seconds). The 180-194°F range is the standard window that meets this sanitization requirement while staying within what most equipment can reliably hold. If the rinse is below 180°F, sanitization may not occur; if it climbs well above 194°F, it usually isn’t necessary and can strain equipment or increase energy use. So the 180-194°F range best fits the need for proper sanitizing performance. Verify with a calibrated thermometer at the end of the final rinse to confirm the temperature.