5 Causes of a Smoky Fireplace and How to Fix Each

A fireplace that pushes smoke into the room instead of up the chimney is one of the most common complaints we hear from Aurora homeowners. It is almost always fixable once you find the cause. Here are the five usual suspects.

1. A Closed or Partly Open Damper

It sounds obvious, but a damper that is closed or only partly open is the number one cause. Confirm it is fully open before every fire.

2. A Dirty or Blocked Flue

Creosote buildup, a bird nest or fallen debris narrows the flue and chokes the draft. A professional sweep clears it and restores the pull.

3. A Cold Flue

A cold chimney holds a plug of dense air that resists the smoke. Warming the flue first, by holding a lit roll of newspaper up near the damper, often gets the draft started.

4. Not Enough Make-Up Air

Tight modern homes can starve a fire of air. Cracking a nearby window an inch gives the fire the air it needs to draft properly.

5. A Flue Sizing or Height Problem

Sometimes the flue is too short or the wrong size for the firebox. This is a job for a professional to diagnose, and the fix may involve the cap or flue.

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Published October 16, 2026 · Chimney Sweep Titan, Batavia IL