How Long Does a Residential Propane Backup Generator Last?

Source: InterNACHI Life Expectancy Chart
10-20 years
Estimated lifespan
10 years
Minimum
20 years
Maximum

Estimated Replacement Cost

$3,000 – $10,000
installed | National average, 2025-2026

Extend Its Life

Run the generator under load for 30 minutes monthly. Change oil and filters per manufacturer schedule. Have a technician service it annually. Keep fuel fresh — add stabilizer if stored.

Category: Electrical

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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