This picture shows furnace flue condensation problems. This problem is caused by hot gases cooling too quickly in the flue. As the hot gasses cool, the moisture in the gases condenses and starts dripping back down the flue. Typically, there is a combustion issue or bad flue design. (more…)
Gas Oil Vent Flue Vents Materials Table - Gas and oil vent flue piping uses different types of materials depending on the applications. It is important that gas or oil flue vent pipes are installed correctly and maintained throughout the life of the furnace
This pipe has a condensation problem which an adept technician will recognize and take corrective action before the corrosive effects of condensed gas residue eat through the flue pipes and weaken masonry in chimneys.
Draft hood not connected properly to the flue on an atmospheric boiler
Flue Size Chimney Liners Corrosion - It is important that furnace flues are sized properly or vent into chimneys that have chimney liners in them. Many older heating systems were oversized. From the furnace to the chimney used to vent the exhaust gases many older systems are oversized.
These older systems were also inefficient. Modern furnaces and boilers are far more efficient than the older inefficient systems. The older systems had flue gases that contained more heat than the newer modern heating systems. It is, therefore, important that flue size is sized properly for the newer furnaces because the flue gases are highly corrosive when they condense. (more…)
