Flue Size Chimney Liners Corrosion | HVAC Heating

Flue Size Chimney Liners Corrosion

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…)