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A tankless water heater sizing calculator determines the required flow rate (GPM) and temperature rise to select the correctly sized unit. Flow rate is the sum of all simultaneous hot water uses; a shower (2.5 GPM) + dishwasher (1.0 GPM) requires a unit capable of 3.5 GPM at the required temperature rise.
Guide étape par étape
- 1Input base values
- 2System computes results
Exemples résolus
Entrée
Enter the required values
Résultat
Result computed by the formula
Erreurs courantes à éviter
- ✕Precision loss
- ✕Ignoring variables
Questions fréquentes
What does this calculator do?
Input base values
How do I use this calculator?
System computes results
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