what will carbon monoxide detector sound like if there is CO in home?

carbon monoxide detectors first alert image

Chloegirl

I just plugged in a first alert carbon monoxide detector down in basement. The horn will sound once or twice every 20 minutes or so and the red light will flash every so often also. Is this a malfunction or is there CO in my home?

Answer
A very load chirping noise.

Why does my Carbon Monoxide detector keep going off?

Stephen T

We have a brand new First Alert smoke/carbon monoxide detector. One day it was going off when I came home for lunch. I called the fire dept. and they came and did a test and said my levels were normal for the basement. A few weeks ago it started going off again so I opened a window. We felt no symptoms. This morning it went off yet again.

Is my device faulty? What could be the problems. Every time it has gone off I have replaced the batteries just in case the signal meant low battery.

Answer
I would try a different unit (or even different brand) and see if the results are the same. You might even try getting separate smoke/CO detectors and try different locations. And if it goes off again, I would have the fire department come and check more than the basement (and they should use two detectors to make sure THEIR readings are accurate). There's a whole myriad of factors involved here; I wouldn't rest until I was sure I wasn't in any danger. People die from CO poisoning every day. I've found a couple of websites that might help:

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