In 2007 Illinois passed a law requiring every home to have at least one carbon monoxide detector within 15 feet of every room that people sleep in.
Seven years later homeowners are getting an unexpected surprise.
If your CO detector has started beeping at you, that is sound that you need to pay attention to.
That sound may mean that the detector's battery is low or that it has come to the end of its lifespan.
Quincy Fire Chief Joe Henning says that many people don't know that the detectors only last between 5 to 7 years.
"We went on 72 calls in the last year and that's up significantly," Chief Henning said. "And 53 of those were simply indicators that the detector had reached the end of its life. So we just had to tell the consumer it's time to go out and get a new detector."
Quincy Farm and Home supply manager Leon Obert says that sales of carbon monoxide detectors are up at his store.
"We've seen a lot of people coming in to get these replaced," Obert said. "When the 7 year period is up of course they start beeping, people think they are malfunctioning due to low battery or whatever. Find out they put new batteries in of course find out after they get to reading on the detector it has expired and its time for replacement."
Wes Beitl is a safety expert who checks the CO detectors in his home on a regular basis.
"I check it during daylight savings time changes, twice a year," Beitl said. "But then in between if it was to beep or any abnormality of it. That I would think is a problem, I would check it again."
Chief Henning has a simple way for anyone to keep track of the life of their CO detector.
"Locate on there where the manufacturing date is for that particular detector," Henning said. "Once they do that then they need to read the directions, find out what they've got, do the math and then indicate on that detector, with a sharpie or something what the expiration date would be.
Here is a link to some CO safety guidelines for your and your family.