How Long Does a Hot-Water and Steam-Radiant Boiler Last?

Source: InterNACHI Life Expectancy Chart
25-50 years
Estimated lifespan
25 years
Minimum
50 years
Maximum

Estimated Replacement Cost

$4,500 – $12,000
installed | National average, 2025-2026

Extend Its Life

Have a technician inspect annually. Bleed radiators when they feel cold at the top. Check the pressure gauge monthly. Listen for banging — this usually indicates trapped air or scale buildup.

Category: HVAC

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Lifespan estimates are based on industry data for typical residential installations with normal use and proper maintenance. Actual lifespan varies with installation quality, climate, usage intensity, and maintenance. These figures may differ from other sources.

Source: InterNACHI Standard Estimated Life Expectancy Chart for Homes

Page generated: 2026-03-29