Homeowner service scope
Smoke and Draft Problem Diagnosis
Draft is an interaction among the appliance, flue, house, weather and operation. A useful diagnosis gathers conditions and tests plausible causes instead of jumping directly to a taller cap or new liner.

When it may be relevant
Reasons to discuss this service
- Smoke enters the room during startup or operation.
- Draft changes when exhaust fans or doors operate.
- The appliance is difficult to light or burns poorly.
- The symptom began after remodeling, weatherization or appliance changes.
These are conversation starters, not a remote diagnosis. The same observation may support a different service once the appliance, venting system and site conditions are examined.
Written scope
What a clear proposal should address
- 1
Record when the symptom occurs and which appliances or fans are running.
- 2
Assess fuel, damper, connector, flue and termination conditions.
- 3
Consider house pressure, stack effect and make-up air factors.
- 4
Explain observations, tests, limitations and corrective options.
Before hiring
Questions for the chimney professional
- Which conditions were reproduced or measured?
- Was blockage ruled out?
- How were house-pressure effects considered?
- What evidence supports the proposed correction?
Also verify current insurance, applicable licensing or registration, relevant training, permits and warranty terms directly. A directory profile is not verification.
Smoke and carbon-monoxide concerns can be urgent. Stop use, respond to alarms and seek emergency help for immediate danger.
For an active fire, carbon-monoxide alarm, rapidly filling smoke or immediate danger, leave the building and contact emergency services.