Originally Posted by
mygirlsdad77
some detectors are combination gas and/or co. I have experienced small leaks(very small, small enough to were you couldnt even smell it unless you put your nose right on the joint) that have caused combination detectors to alarm. Start with marks advice(most likely your problem). But if the new detector goes off, we will need to investigate further. Actually, if the new detector goes off, you will need to call back in some different pros, because there would be a (potentially) very serious health hazard. Not something to wait and see if it gets worse, needs immediate attention.