Water Heater Sizing Guide
Answer two quick questions and get a recommended tank size or tankless flow-rate capacity for your household.
How water heater sizing actually works
Water heaters are sized differently depending on whether you're choosing a tank or a tankless unit. Tank sizing is about total capacity — how many gallons of hot water are ready at once. Tankless sizing is about flow rate — how many gallons per minute (GPM) the unit can heat on demand.
Why household size isn't the whole story
Two households of the same size can need very different capacity depending on habits — back-to-back showers before school or work, a soaking tub, or a dishwasher and laundry running at the same time as a shower all push demand higher than a simple headcount would suggest.
Getting the exact number
This tool gives you a solid planning estimate. The exact model, installed cost, and whether your home's gas line or electrical service needs upgrading for a tankless conversion all get confirmed during a free in-home assessment — no obligation.
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