Stalled Draft at Furnace Flue | Home Inspections Bellevue Seattle Everett
This home located in the Bellevue, Washington area was constructed in the 1950's.
Since that time, it has been extensively remodeled and updated.
The newer mid-efficiency furnace has a flue diameter of approximately 5".
It qickly transitions to a connection to the original flue with a diameter of approximately 10".
With the furnace activated, the gases from the furnace begin to condensate and drip onto the floor of the mechanical room within a few minutes. There is substantial corrosion at both the flue and furnace.
When changing the efficiency of a furnace or making any other changes to the furnace venting system, consideration must be given to the ability of the flue gases to escape with back drafting into the house or condensing inside the flue as the gases are not as hot as older low efficiency furnaces.
Higher efficiency furnaces extract more of the heat out of the waste gases which can lead to the condensation problem.
Schedule a Home Inspection today ! Hergert Inspection 425-652-6515
- Washington State Inspector License 619
- WSDA Structural Pest Inspector license 79988
- Over 25 years new home construction experience
- Custom Reports including digital and infrared images
- Weekend appointments available