Money-saving
Replace alarms older than 10 years
Sensors degrade; manufacturers rate alarms for about 10 years.
- How often
- Every 10 yr
- Who
- DIY
- Typical cost
- $20–$60
- Time
- 30 min
Why this matters
Sensors degrade; manufacturers rate alarms for about 10 years.
If you skip it: An expired sensor may not trigger even when it appears to work.
Who should do it
This is a do-it-yourself task. With basic tools and a few minutes, most homeowners can handle it without hiring anyone.
When to do it
There's no special season for this — just keep it on a every 10 years rhythm so it doesn't slip.
Frequently asked questions
How often should I replace alarms older than 10 years?+
Plan to replace alarms older than 10 years every 10 years. Sensors degrade; manufacturers rate alarms for about 10 years.
How much does it cost to replace alarms older than 10 years?+
It typically runs $20–$60. This is a do-it-yourself task. With basic tools and a few minutes, most homeowners can handle it without hiring anyone.
What happens if I skip it?+
An expired sensor may not trigger even when it appears to work.