Replace CO detectors (7-year lifespan)
Why it matters
Electrochemical CO sensors degrade and fail silently after 7 years. Most detectors have an EOL (end-of-life) date stamped on the unit.
Stop forgetting to do this.
Hearth generates a personalized maintenance schedule so you never miss another replace co detectors (7-year lifespan).
How to do it
- 1
Check the manufacture or EOL (end-of-life) date inside each CO detector.
- 2
Replace any detector 7+ years old or past its EOL date.
- 3
Position new detectors in bedrooms and living areas on the wall or ceiling.
- 4
Install within 15 feet of sleeping areas, per manufacturer guidelines.
- 5
Secure detectors to wall/ceiling with hardware-store-provided anchors.
- 6
Test the new detector using its built-in test button; alarm should sound.
- 7
Replace batteries annually and test monthly for proper function.