Carbon Monoxide can be a deadly gas. You can't see or smell it but at high levels it can kill a person in minutes.Bad heat exchangers on a fuel burning furnace can be a major cause of carbon monoxide build up in a house. CO can make you dizzy, mentally confused, nauseated, or faint. Prevention is the key to avoiding CO poisoning. Get your furnace tuned-up regularly to avoid being poisoned by CO. We do work in the following areas; idaho_falls blackfoot, fort_hall rexburg idaho rigby shelley eastern_idaho southeast_idaho ammon arco moore driggs victor ririe, firth and more.