How long should a smoke detector last?
While you may think your smoke detector sits idle until smoke is detected, in reality it's constantly monitoring the air 24 hours a day. So an ionization smoke detector goes through 3.5 million monitoring cycles in 10 years. In a photoelectric smoke detector, a light operates 24 hours a day to check for smoke particles in the air. And just like any electrical appliance, the components of smoke detectors wear out over time. When a smoke alarm reaches 10 years of use, the potential of failing to detect a fire increases substantially. Replacing them after 10 years reduces the likelihood of failure.
Check your state and local codes before starting any project. Follow all safety precautions. Every effort has been made to ensure the accuracy and safety of this information. Neither Westlake nor any contributor can be held responsible for damages or injuries resulting from the use of the information in this document.