section_path: Safety concerns/Risk of carbon monoxide inhalation
section_name: Risk of carbon monoxide inhalation
paragraph_text: Risk of carbon monoxide inhalation
  
  Natural gas heating systems may cause carbon monoxide poisoning if unvented or poorly vented. Improvements in natural gas furnace designs have greatly reduced CO poisoning concerns. Detectors are also available that warn of carbon monoxide or explosive gases such as methane and propane.