Carbon monoxide (CO) is a highly toxic, lighter than air gas which is most often found in an area surrounding a combustion source (e.g., a furnace, boiler or space heater) where there is insufficient oxygen to allow for complete combustion of fuel in use.
Deemed the “silent killer” because it is colorless, odorless, tasteless, and non-irritating, carbon monoxide is virtually impossible to detect without testing.
