A fireplace that will not draw is usually fighting a closed or stuck damper, a creosote blockage, a cold flue, a flue that is too short, or negative air pressure in a tight home. Each has a specific fix.
Common causes
A damper not fully open, a blockage of creosote or debris, a cold flue at startup, a flue sized wrong for the firebox, or negative pressure starving the fire of air.
Quick fixes
Open the damper fully, prime a cold flue by warming the air near the damper, crack a nearby window to relieve negative pressure, and burn seasoned wood that lights and burns hot.
When to call a pro
If the basics check out and draft is still poor, the cause may be flue sizing, chimney height, or a downdraft pattern. A draft assessment finds and fixes it.
Frequently Asked Questions
Why does it only smoke at startup?
A cold flue. Priming the flue first usually fixes startup draft problems.
Can a tight house cause poor draft?
Yes, negative pressure. Adding combustion air or cracking a window helps.
Could it be a blockage?
Yes, creosote or debris restricts airflow.
Need a chimney sweep, inspection, or repair?
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