CO Alarm FAQs
Why should I leave the carbon monoxide (CO) gas detector alarm plugged in all year?
Leave your carbon monoxide alarm plugged in all year. Carbon monoxide gas problems can happen at any time. Remember, your furnace or space heaters aren't the only source of carbon monoxide. Gas ranges, water heaters, dryers, charcoal grills, or vehicles left running in an attached garage can all cause carbon monoxide gas problems.
