After two service calls, the smoky odor persists. What has been done so far:
- Annual tune-up (nozzle etc.)
- Reinforced flue pipe where it was corroded
- Resealed flue pipe connection to chimney
- Cleaned soot out of chimney cleanout door so the door would shut better
- Trimmed some kind of lining in the boiler that was bent wrong and was contacting the flame (sorry, I forget exactly what it was)
- Cleaned around the boiler cleanout panel
- Checked to make sure the chimney is not blocked
- Rechecked the first guy's work
The second technician confirmed that the odor is coming from the furnace/boiler/heating appliance. Parting words: "This should be much, much better."
Has anything been missed here?