How can I troubleshoot faulty carbon monoxide and fire alarms that give false positives?
You can procure carbon monoxide test gas with a known PPM (parts per million) concentration. Place your CO detector in a small plastic bag that can be sealed tight but squeeze the bag down to reduce the amount of air that is in the bag with your detector before sealing it. Spray the carbon monoxide test gas into the bag that houses the alarm and seal the bag. Wait... Without testing with a known quantity of gas you may always wonder. A short Youtube video demonstrating this can be viewed at www.coexperts.com