Black soot streaks inside the firebox and door mean incomplete combustion.
Seasoned hardwood and a proper draft reduce soot; annual sweeping keeps the flue safe.
Typical fix cost in Boise: $100-$300. Do not attempt work on live systems - get a licensed specialist on it.
| Item | Range |
|---|---|
| Diagnosis | $75-$150 |
| Repair | $100-$300 |
If there is risk of damage, safety hazard or no service at all, treat it as an emergency and act now. Otherwise schedule a standard visit.
Regular maintenance catches most of these early - see the maintenance checklist in the emergency guide.