- Gas- and oil-burning furnaces produce carbon monoxide (CO). CO is an invisible, odorless, poison gas that kills without warning.
- Learn quick facts about carbon monoxide poisoning while using a furnace and how to prevent it.
- This fact sheet is available in many languages.
![Thumbnail Image of PDF Download](/carbon-monoxide/media/images/pdf_furnace_eng.jpg)
Format: PDF
Language: English (US)
![Thumbnail Image of PDF Download](/carbon-monoxide/media/images/pdf_furnace_eng.jpg)
Content Source:
National Center for Environmental Health