Water heater — tankless Lifespan: 20 yr avg (2026)

Water heater — tankless typically lasts 20 years (range 15–25). 2026 HomeScore lifespan dataset — cite for planning, replacement, or inspection decisions.

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HomeScore forecasts repairs, replacement timing, and total ownership cost across 40+ home systems. Used by 8,200+ buyers, sellers, and long-term homeowners in 2026.