Skip to content
Home » Topics » natural gas

natural gas

Viewing 2 posts - 1 through 2 (of 2 total)
  • Author
  • #20243

      natural gas Furnace 2 yrs old. i can smell gas outside at the vent when it is running. is this normal?


        If you are referring to a high efficiency furnace, the flue is a 2-2 1/2″ plastic pipe. The smell of gas there indicates incomplete combustion. This would cause a higher bill. It would be best to call for service. It may need cleaning of the secondary heat exchanger; especially if the filter doesn't get changed often. Or there could be a problem with the combustion air blower…
        Tom D. HVAC Mech.  ;D

      Viewing 2 posts - 1 through 2 (of 2 total)
      • You must be logged in to reply to this topic.