How long does a home security system last?

You can expect a home security system to last 12 to 20 years, with an average of 15 years. Although systems may remain functional at 20 years out, repair parts are often no longer available and upgrading to a new system with latest features becomes sensible. Also, see our blog post Can the smoke sensors in a home security/fire alarm system replace the smoke alarms required by the building code?

    Here’s a bar graph comparing a security system life expectancy to other home technologies.
    Go to our blog post What is the average lifespan of the parts of a house? for rating of other house components. To understand the basis, potential use, and limitations of lifespan ratings, see How accurate are the average life expectancy ratings of home components? Are they actually useful?  

Here’s links to a collection of our blog posts about HOME SAFETY: 

• Why is it important to use "cabinet screws" to mount the upper cabinets in the kitchen?

• Is the door between an attached garage and the house required to have a closer (self-closing device)?

• Can the smoke sensors in a home security/fire alarm system replace the smoke alarms required by the building code?

• Should I get a lightning rod system to protect my house? 

• What are the "Aging In Place" features to look for when buying a retirement home?

• How do I safely remove a dead rodent (rat, mouse or squirrel) from the attic?

• Does pushing the test button on a smoke alarm test the smoke sensor device inside? 

• What is the minimum height of a ceiling fan above the floor?

• Should a smoke alarm be installed in the kitchen? 

• Why is a double cylinder deadbolt lock on an exterior door a safety hazard? 

• Why are rubber washing machine hoses a safety risk?

• What can I do to avoid kitchen accidents and injuries?

• Where are smoke alarms required to be located? 

• Are carbon monoxide alarms required to be installed in homes in Florida?

• Are old vinyl tile floors dangerous?  

• How can I use safety checks to limit my tenant liability for a rental house?

• Do you inspect for trip hazards around the home? 

• When should I replace my smoke alarms?

    Visit our SAFETY page for other related blog posts on this subject, or go to the INDEX for a complete listing of all our articles. 

NOTE: These life expectancies are based on data provided by InterNACHI, NAHB, FannieMae, and our own professional experience. Because of the numerous variables that can affect a lifespan, they should be used as rough guidelines only, and not relied upon as a warranty or guarantee of future performance.