Calculateur de Dimensionnement de Chauffe-Eau Gratuit
Déterminez la taille de chauffe-eau adaptée à votre foyer. Calculez la capacité nécessaire en fonction du nombre d'occupants.
Recommended Tank Size
80 gal
Recommended Tank Size vs Number of Occupants
Formule
Water Heater Sizing
Daily Demand = Occupants x Gallons per Person
BTU/hr = Demand x 8.33 x Temp Rise / Recovery Hours
The constant 8.33 is the weight of one gallon of water in pounds. Tank size is rounded up to the nearest standard 10-gallon increment.
Exemple Résolu
A household of 4 using 20 gallons each, 70 degF rise, 1-hour recovery.
- 01Daily demand = 4 x 20 = 80 gal
- 02Tank size = round up to 80 gal
- 03BTU = 80 x 8.33 x 70 / 1 = 46,648 BTU/hr
Questions Fréquentes
What temperature rise should I use?
In most regions, incoming water is 50 to 60 degF and the target is 120 degF, giving a rise of 60 to 70 degF. Use 70 degF as a safe default.
Tank vs tankless - how does sizing differ?
Tankless heaters are sized by flow rate (GPM) and temperature rise. This calculator is for tank-style heaters where storage capacity is the key variable.
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