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Guide to Warewashing & Janitorial Equipment
A booster heater is a dedicated heating device used in commercial dishwashing to
raise the final rinse water temperature to the required sanitizing level — 180°F (82°C) for
high-temperature machines. Achieving this temperature is essential for meeting NSF
sanitation standards and ensuring that dishes are not only visibly clean but hygienically
safe for reuse.
While the building’s standard hot water supply may only reach 120°F to 140°F, the
booster heater “boosts” that water to the higher temperature required for thermal
sanitization. Whether integrated into the dishmachine or installed externally, the booster
heater is a critical component of any high-temp warewashing system.
What is a Booster Heater?
The Essentials
Behind the
Machine
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Booster heaters can be configured in two main ways: internal (built into the
dishmachine) or external (standalone units installed adjacent
to the machine). Both perform the same function, but each
comes with unique considerations for selection, maintenance,
and installation.
Internal vs. External Booster Heaters