Don’t Wait for a Chirp: How Long Does Your Carbon Monoxide Detector Last?
Your carbon monoxide (CO) detector is a critical safety device, but it doesn’t last forever. Just like a smoke detector, a CO alarm has a limited lifespan, and replacing it on time is a non-negotiable step for home safety.
CO Detector Lifespan: What You Need to Know
A typical carbon monoxide detector’s lifespan is between five and seven years, although some models are designed to last up to 10 years.
Why is age so important? The sensor inside the unit degrades over time. Once it expires, no amount of battery changing will revive it—it simply won’t be able to detect CO gas anymore.
Key Factors Affecting Lifespan
Environmental Factors: Extreme temperatures and high humidity can shorten an alarm’s useful life.
End-of-Life Warning: Most detectors manufactured after 2009 are required by Underwriters Laboratories (UL)to have an end-of-life alert. This usually involves a distinct series of beeps or chirps to let you know it’s time for a replacement.
Battery Management: If your detector doesn’t have a sealed, 10-year battery, you should replace the batteries annually.
Where to Find Your CO Detector’s Expiration Date
If you’re unsure how old your CO alarm is, it’s always best to err on the side of caution and replace it.
You can quickly check the unit’s age by following these steps:
Remove the detector from the wall or ceiling mount.
Look on the back of the unit for a manufactured date (or “Build Date”) or an expiration date (“Replace By”).
If the date shows your detector is more than seven years old (or past its “Replace By” date), replace it immediately. An expired detector in end-of-life mode will not detect carbon monoxide.
Installing Your CO Detectors for Maximum Safety
Carbon monoxide is often called “the silent killer” because it is a poisonous, colorless, odorless, and tasteless gas. Even low-level exposure can cause symptoms like headaches, dizziness, and nausea; high levels can quickly lead to disorientation, unconsciousness, and death.
Placement Guide
Location is Key: CO gas is about the same weight as air, so detectors can be mounted anywhere as long as they’re at least 15 inches below the ceiling.
Every Level: Install at least one detector on every level of your home, including the basement.
Near Bedrooms: Place detectors in hallways near every sleeping area (often required by law to be within 15 feet of every sleeping room).
Keep Distance: Install the alarm at least 15 feet away from fuel-burning appliances (like your furnace or water heater) to avoid false alarms.
Consider a Voice Alarm: For homes with small children, consider buying a talking CO detector. A voice warning is often more effective at waking and directing kids than a shocking horn.
Need Help with Your Home Gas Appliances? Call the Experts.
At PDM Plumbing, Heating, Cooling Since 1885, we’ve been dedicated to home safety for over a century. From gas leak testing to maintaining your furnace, water heater, and other gas appliances, our experienced team provides honest, reliable, and affordable service.
Why choose PDM?
Seven Generations of Service: We’ve seen it all and are experienced with all types of plumbing, heating, and cooling systems.
Guaranteed Happiness: If you aren’t completely thrilled with your service, we will rush back at no charge to correct the situation.
Trusted Reputation: We serve everyone from trusted businesses to over 1,600 five-star-reviewed residential customers in the area.
Contact the oldest gas expert in the greater Bolingbrook, Homer Glen, Joliet, New Lenox, and Plainfield, IL area for help with gas leak testing, gas piping repair/install, gas water heater service, gas furnace, and any plumbing, heating, and air conditioning maintenance and repair.
Call PDM today at 815-390-7095 and get back to normal fast.
