Immediate steps

Stop using the appliance if smoke continues to enter the room. If a carbon-monoxide alarm sounds or anyone feels unwell, get outside to fresh air and contact emergency services. Do not re-enter until authorities say it is safe.

What to document

Note startup versus established fire, doors or exhaust fans in use, weather, fuel and recent changes. Take photos from a safe position; do not open or dismantle the appliance to investigate.

What a professional may review

Possible areas include a blockage, deposits, damper position, vent condition, air supply or building pressure. These are possibilities, not a diagnosis. Ask what was tested and what needs correction before the next use.

Find a local company and confirm scope

Company profiles are directory records, not a diagnosis or endorsement. Confirm current service area, qualifications, insurance, availability and written scope directly with the provider.

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