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Clues You Can and Can't See

Carbon monoxide (CO) clues you can see:

  • Rusting or water streaking on vent/chimney
  • Loose or missing furnace panel
  • Sooting
  • Loose or disconnected vent/chimney connections
  • Debris or soot falling from chimney, fireplace or appliance
  • Loose masonry on chimney
  • Moisture inside of windows

Carbon monoxide (CO) clues you cannot see:

  • Internal appliance damage or malfunctioning components
  • Improper burner adjustment
  • Hidden blockage or damage in chimneys

Only a trained service technician can detect hidden problems and correct these conditions!



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