What is temperature rise?

The maximum flow rate that our tankless water heaters can produce depends on temperature rise. Temperature rise is the difference between the set temperature of the unit and the temperature of the incoming ground water. For instance, if you set the temperature of the unit to 120° F and the incoming ground water temperature is 60° F, this is a 60° temperature rise. The lower the set temperature, and the higher the incoming ground water temperature, the more hot water flow the unit can produce and vice versa. If sized correctly for your application, the unit(s) should not have a problem producing enough flow for your hot water needs.

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