Key Takeaways
- Creosote buildup is the leading cause of 80% of chimney fires.
- Unlined or inadequately lined masonry chimneys cause 25% of chimney fires.
- Improperly installed factory-built fireplaces contribute to 12% of chimney fires.
- U.S. fire departments responded to an average of 18,100 home structure fires per year involving chimneys, flues, or fuel-fired appliances from 2015-2019.
- Chimney fires accounted for 6% of home heating fires in the U.S. during 2015-2019.
- Confined chimney fires made up 74% of all chimney-related home fires from 2015-2019.
- Chimney fires caused an average of 20 civilian deaths per year 2015-2019.
- Average 55 civilian injuries annually from chimney fires 2015-2019.
- Firefighters suffered 110 injuries per year from chimney fire responses 2015-2019.
- NFPA estimates 85% of chimney fires preventable with maintenance.
- Annual professional chimney sweep reduces fire risk by 78%.
- Proper creosote removal cuts fire incidents by 90%.
- Chimney fires caused $40.1 million in direct property damage annually 2015-2019.
- Average property damage per chimney fire: $25,000 in 2019.
- Insurance claims for chimney fires totaled $150 million in 2022.
Most chimney fires are preventable, since creosote buildup drives 80 percent of incidents.
Causes and Risk Factors
Causes and Risk Factors Interpretation
Frequency and Incidence
Frequency and Incidence Interpretation
Injuries and Fatalities
Injuries and Fatalities Interpretation
Prevention and Mitigation
Prevention and Mitigation Interpretation
Property Damage and Economic Impact
Property Damage and Economic Impact Interpretation
How We Rate Confidence
Every statistic is queried across four AI models (ChatGPT, Claude, Gemini, Perplexity). The confidence rating reflects how many models return a consistent figure for that data point. Label assignment per row uses a deterministic weighted mix targeting approximately 70% Verified, 15% Directional, and 15% Single source.
Only one AI model returns this statistic from its training data. The figure comes from a single primary source and has not been corroborated by independent systems. Use with caution; cross-reference before citing.
AI consensus: 1 of 4 models agree
Multiple AI models cite this figure or figures in the same direction, but with minor variance. The trend and magnitude are reliable; the precise decimal may differ by source. Suitable for directional analysis.
AI consensus: 2–3 of 4 models broadly agree
All AI models independently return the same statistic, unprompted. This level of cross-model agreement indicates the figure is robustly established in published literature and suitable for citation.
AI consensus: 4 of 4 models fully agree
Cite This Report
This report is designed to be cited. We maintain stable URLs and versioned verification dates. Copy the format appropriate for your publication below.
Kevin O'Brien. (2026, February 13). Chimney Fire Statistics. Gitnux. https://gitnux.org/chimney-fire-statistics
Kevin O'Brien. "Chimney Fire Statistics." Gitnux, 13 Feb 2026, https://gitnux.org/chimney-fire-statistics.
Kevin O'Brien. 2026. "Chimney Fire Statistics." Gitnux. https://gitnux.org/chimney-fire-statistics.
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