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Tank Water Heater Sizing by Household

Pick a tank size (gal) for a family of 1–6.

Result

Recommended tank

48 gal

Standard tank

50 gal

First-hour rating

54 gal

About this tool

Enter household size, fixtures, and inlet temperature; get a recommended first-hour rating and tank size. Targets r/Plumbing '50 gal vs 75 gal' debates.

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