Sizing help
What size water heater do you need?
Too small and you'll run out of hot water at the worst moment; too big and you're heating water you'll never use. Answer four quick questions and get a recommended tank size plus the tankless flow rate that serves the same peak demand.
Water heater sizing calculator
Tell us how your household uses hot water — we'll recommend a tank size and the tankless flow rate that would serve the same peak demand.
Serving Austin ((512) 233-6590) and Marble Falls ((830) 460-3565) — Texas Master Plumber License #M-41147. This is a sizing tool, not a quote — use our plumbing cost estimator to plan your budget, or read the water heater guide for repair-vs-replace help.