On the covered Kidde smoke alarm, chirping every 30 seconds on a sealed-battery model means end of life. On sealed-battery models Kidde says the alarm chirps every 30 seconds to indicate it is time to replace the alarm. First, find the manufacture or replace-by date on the back or side label.
Differential
Likely causes of “Kidde smoke alarm chirping every 30 seconds on a sealed-battery model”, and how to tell them apart
- 1
The sealed-battery alarm has reached its end of life
What separates it The alarm chirps every 30 seconds
How to confirm Find the replace-by date on the label
- 2
The sealed battery is nearly spent
What separates it The alarm is near ten years
How to confirm Replace the alarm
- 3
An unknown age
What separates it There is no date
How to confirm Replace it
- 4
A past-ten-years alarm
What separates it The date has passed
How to confirm Replace it
- 5
A faulty alarm
What separates it It chirps early
How to confirm Contact Kidde
Before you touch a setting
Record this first — changing settings destroys the evidence
- That the chirp is every 30 seconds
- The manufacture date
- Whether the battery is sealed
- The model number
Try in this order
0 of 8 completedWhat to do first
ReversibleFind the manufacture or replace-by date on the back or side label.
Correct only the documented fault domain
ReversibleA sealed-battery alarm cannot take a new battery, so Kidde's instruction is to replace the whole alarm. Kidde recommends replacing all smoke alarms, battery and hardwired, every 10 years, and says an alarm older than that or of unknown age should be replaced.
Find the manufacture or replace-by date
ReversibleRemove the alarm from its bracket and read the date on the back or side label.
Count the years
ReversibleKidde recommends replacing smoke alarms, battery and hardwired, every ten years, so an alarm older than that is due.
Replace the whole alarm
ReversibleA sealed-battery alarm cannot take a new battery, so Kidde's instruction is to replace the whole alarm.
Replace the other alarms of the same age
ReversibleAlarms bought at the same time reach the end of life together, so check them all.
Test the new alarm
ReversiblePress the Test button on the new alarm and on every other alarm in the home.
Dispose of the old alarm correctly
ReversibleFollow local rules, since some alarms contain a small amount of radioactive material or a battery that should not go in household waste.
Model-specific
What is true of this model and not of its siblings
- The condition on this page
- End of life: a chirp every 30 seconds on a sealed-battery alarm.
- Parts involved
- The whole alarm.
- Source
- Kidde's guide to consistent chirping.
- Sealed batteries and the ten-year design
- Sealed-battery alarms are built so that the battery and the sensor are meant to last about ten years, and then the whole alarm is replaced. The chirp every 30 seconds is the alarm telling you that its time is up, even though it may still seem to work.
- Do not remove it without a replacement
- A home without a working smoke alarm is at risk. Fit the new alarm as soon as you can, and consider interconnected alarms so that one sounding alerts the whole house.
Stop boundary
When this stops being a self-service repair
- !A sealed-battery alarm cannot take a new battery, so replace the whole alarm
- !Replace all alarms every ten years
- !Contact Kidde with the model
Evidence ledger
Sources behind this answer
Exact questions
Common questions
What does chirping every 30 seconds on a sealed-battery model mean on a Kidde smoke alarm?+
End of life. On sealed-battery models Kidde says the alarm chirps every 30 seconds to indicate it is time to replace the alarm.
What does a chirp every 30 seconds mean on a sealed-battery Kidde alarm?+
It is time to replace the alarm.
Can I change the battery?+
No.
How old is too old?+
Ten years.
What if I do not know the age?+
Replace it.
Should I replace the others?+
Yes.
Can I silence the chirp for a while?+
You can hush it with the button for a short time, but the chirp returns, and the proper fix is to replace the alarm.
Is a sealed ten-year alarm worth buying?+
Yes, for most homes, because it removes the need to change batteries.