How Long Does a Security System Last?

Source: InterNACHI Life Expectancy Chart
5-20 years
Estimated lifespan
5 years
Minimum
20 years
Maximum

Estimated Replacement Cost

$300 – $2,000
system installed | National average, 2025-2026

Extend Its Life

Test all sensors and the alarm monthly. Replace batteries in sensors annually. Keep the monitoring company's contact info current. Update access codes periodically. Clean camera lenses.

Category: Home Technology

Browse all home components →

Home Component Rankings

Shortest lived Most expensive to replace All components

Looking for a replacement?

Based on the data above, here are relevant options.

Shop Security System on Amazon
→

Affiliate link

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