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FAQ - What does the term "temperature rise" mean.

Article Number: 7 | Rating: Unrated | Last Updated: Thu, Oct 9, 2014 4:25 PM

The difference between the incoming ground water temperature and the set temperature of the tankless unit. For example, if your tankless unit was set at 120°F and your incoming ground water temperature was 50°F your temperature rise would be 70°F (120-50=70). Temperature rise is used to determine BTU size of heater, when peak fixture demand is known. I.e. large temperature rise and high peak fixture demand requires a tankless heater with higher btu input capacity.

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