Flue Route & Termination Diagnostics
Ferroli boilers, like all modern condensing units, require specific conditions for their flue systems. We regularly encounter issues with flue terminations on older Ferroli models, especially in the tightly packed Victorian terraces common in Atherton. If the flue is too close to an opening window, a neighbour's property, or even an unventilated alleyway, it can re-circulate exhaust gases, leading to lock-outs or inefficient operation. We verify correct clearances and look for signs of plume corrosion on the terminal, which can indicate prolonged exposure to corrosive condensate.
- Check flue terminal clearances
- Inspect for plume re-circulation
- Assess condensate disposal points

