How Long Does a Ducting Last?

Source: InterNACHI Life Expectancy Chart
60-100 years
Estimated lifespan
60 years
Minimum
100 years
Maximum

Estimated Replacement Cost

$2,000 – $6,000
whole house installed | National average, 2025-2026

Extend Its Life

Have ducts professionally inspected and cleaned every 5-7 years. Seal leaky duct joints with mastic or metal tape — not cloth duct tape. Insulate ducts in unconditioned spaces.

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