Purpose
- 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.
Format: PDF
Language: English (US)
Content Source
National Center for Environmental Health
About This Page
Published: May 15, 2024
Updated: April 11, 2024
This page was last updated on this date. Updates may include minor edits, image changes, or other modifications to page content.
Reviewed: August 21, 2026
The information on this page was last reviewed by subject matter experts to ensure accuracy.