{"hq_id":"hq-p-hom-000228","name":"Emergency Candle and Kerosene Heater Safety (CO, Fire, PM2.5 Indoors)","category":{"primary":"household","secondary":"emergency","tags":["emergency","candle","kerosene heater","CO","fire","PM2.5","power outage","indoor air"]},"product_tier":"HOM","overall_risk_level":"high","description":"During power outages, candles and kerosene heaters are common but hazardous alternatives. Candles: NFPA reports ~7,900 home structure fires/year from candles (2015-2019). Kerosene heaters: produce CO, NO2, SO2, and PM2.5 — indoor air quality degrades rapidly without ventilation. Unvented kerosene heaters banned in some states. K-1 kerosene only (not diesel, gasoline, or contaminated kerosene). CO detector essential with any combustion heating. Space heater fires: #2 cause of home fire deaths in US (NFPA).","synthesis":{"derived_risk_level":"moderate","synthesis_confidence":0.682,"synthesis_method":"compound_composition","context_used":"human_child","context_source":"product_users","exposure_modifier":1.1,"vulnerability_escalated":true,"escalation_reason":"Child exposure group","compounds_resolved":4,"compounds_total":4,"synthesis_date":"2026-05-09","synthesis_version":"1.2.0","methodology_note":"exposure_modifier and adjusted_magnitude are computed from ALETHEIA-calibrated heuristics (route × duration × frequency multipliers, clamped to [0.5, 1.4]). Multipliers are directionally informed by EPA Exposure Factors Handbook (2011) and CalEPA OEHHA but are not regulatory consensus. See /api/methodology for full disclosure."},"hazard_summary":{"sensitive_populations":"children (fire, CO), elderly (fire, falls), asthmatics (PM2.5, NO2)","overall_risk":"high","primary_concerns":["Candle fires: 7,900 home structure fires/year (NFPA)","Kerosene heater indoor air pollution: CO, NO2, SO2, PM2.5","Space heater fires: #2 cause of home fire deaths","CO poisoning from combustion heating in enclosed spaces"],"exposure_routes":"Inhalation (CO, NO2, PM2.5 from combustion); fire and burn risk"},"exposure":{"routes":["inhalation"],"contact_types":["inhalation"],"users":["adult","child"],"duration":"hours","frequency":"event-based","scenarios":["Kerosene heater in poorly ventilated room (CO, NO2, PM2.5 buildup)","Candle fire: 7,900 home fires/year (NFPA), unattended candles primary cause","Space heater too close to combustibles (fire risk — #2 cause of home fire deaths)","Fuel contamination: gasoline mixed with kerosene (explosion risk)"],"notes":"NFPA: candle fires peak during power outages and winter holidays. Flameless LED candles: identical ambiance, zero fire risk. Kerosene heaters: use ONLY K-1 kerosene (not diesel, not gasoline). Ventilation required: crack window in room with kerosene heater. CO detector battery-powered: ESSENTIAL during any combustion heating. Space heater 3-foot rule: keep 3 feet clear of all combustibles on all sides. Never use gas oven or range for heating (CO risk). Banned in some states: unvented kerosene heaters (CA, many others)."},"consumer_guidance":{"usage_warning":"LED flameless candles: zero fire risk alternative. Kerosene heater: K-1 fuel ONLY, ventilate room, CO detector essential. Space heater: 3-foot clearance on all sides, plug directly into wall (no extension cord), auto-shutoff tip-over protection. NEVER use gas oven, charcoal grill, or camp stove for indoor heating (CO poisoning).","safer_alternatives":["LED flameless candles (identical ambiance, zero fire risk)","Battery backup or solar + battery system (eliminates combustion heating need)","Propane buddy heater with ODS (oxygen depletion sensor) for emergency only","Sleeping bags rated for indoor temperature (reduce heating need)"]},"regulatory":{"applicable_regulations":[{"jurisdiction":"USA","regulation":"UL 647 / State bans on unvented kerosene heaters","citation":"UL 647; various state codes","requirements":"UL 647: safety standard for unvented kerosene heaters. Many states (CA, MA, CT, others) ban unvented kerosene heaters entirely.","compliance_status":null,"effective_date":null,"enforcing_agency":"State fire marshal / building codes","penalties":null,"source_ref":null}],"certifications":[],"labeling":{"required_disclosures":[],"prop65_warning":{"required":null,"chemicals":[],"endpoint":null,"notes":null},"ghs_labeling":{"required":null,"signal_word":null,"pictograms":[],"hazard_statements":[],"notes":null},"hidden_ingredients":{"trade_secret_protected":null,"categories_hidden":[],"estimated_count":null,"known_concerns":null,"notes":null},"notes":null},"recalls":[],"regulatory_gap":null,"notes":null},"lifecycle":{"recyclable":false,"disposal_guidance":"Kerosene heater: appliance recycling. Kerosene fuel: hazardous waste.","hazardous_waste":true,"expected_lifespan":"5-15_years"},"formulation":{"form":"varies","key_ingredients":[],"certifications":[]},"materials":{"common":[],"concerning":[],"preferred":[]},"compound_composition":[{"hq_id":"hq-c-org-000043","compound_name":null,"role":"combustion_product","typical_concentration":null},{"hq_id":"hq-c-org-000035","compound_name":null,"role":"combustion_product","typical_concentration":null},{"hq_id":"hq-c-org-000028","compound_name":null,"role":"combustion_product","typical_concentration":null},{"hq_id":"hq-c-org-000011","compound_name":null,"role":"combustion_product","typical_concentration":null}],"identifiers":{"common_names":["emergency candle and kerosene heater safety (co, fire, pm2.5 indoors)"],"aliases":[],"manufacturer":null,"brands":[]},"brand_examples":[{"brand":"Yankee Candle","manufacturer":"Newell Brands","market_position":"premium","notable":"Leading scented candle brand"},{"brand":"Bath & Body Works","manufacturer":"Bath & Body Works","market_position":"mass_market","notable":"Popular scented candles"},{"brand":"Duraflame","manufacturer":"Duraflame","market_position":"mass_market","notable":"Firelogs and emergency candles"}],"brand_examples_disclaimer":"Representative branded products of this category. Concerning ingredients listed in materials.concerning[] apply to the category, not necessarily to every named brand. Specific formulations vary by SKU and may have changed since this record was written; consult the brand's current ingredient label before drawing brand-level conclusions.","sources":[{"type":"expert_curation","name":"ALETHEIA Safety Database","date":"2026-03-25"},{"type":"regulation","title":"UL 647 / State bans on unvented kerosene heaters (UL 647; various state codes)","jurisdiction":"USA","citation":"UL 647; various state codes","id":"src_91005722"},{"id":"cdc_co_poisoning","type":"report","title":"CDC: Carbon Monoxide Poisoning — Facts and Prevention","year":2023,"inherited_from_compound":"hq-c-org-000043"},{"id":"atsdr_co","type":"report","title":"ATSDR Toxicological Profile for Carbon Monoxide","year":2012,"inherited_from_compound":"hq-c-org-000043"},{"id":"iarc_63_acrolein","type":"regulatory","title":"IARC Monographs Volume 63: Acrolein","year":1995,"inherited_from_compound":"hq-c-org-000035"},{"id":"epa_acrolein_iris","type":"regulatory","title":"US EPA IRIS: Acrolein — Provisional Toxicological Review (External Review Draft)","year":2003,"inherited_from_compound":"hq-c-org-000035"},{"id":"iarc_100e","type":"regulatory","title":"IARC Monographs Volume 100E: Personal Habits and Indoor Combustions — Acetaldehyde Associated with Consumption of Alcoholic Beverages","year":2012,"inherited_from_compound":"hq-c-org-000028"},{"id":"epa_acetaldehyde_iris","type":"regulatory","title":"US EPA IRIS: Acetaldehyde — Carcinogenicity Assessment (Group B2)","year":1991,"inherited_from_compound":"hq-c-org-000028"},{"id":"iarc_100f_form","type":"regulatory","title":"IARC Monographs Volume 100F: Formaldehyde","year":2012,"inherited_from_compound":"hq-c-org-000011"},{"id":"epa_form_iris","type":"regulatory","title":"US EPA IRIS Assessment: Formaldehyde (draft)","year":2010,"inherited_from_compound":"hq-c-org-000011"},{"type":"standard","title":"National Fire Protection Association (NFPA)","jurisdiction":"USA","id":"src_4ec2ca30","extraction":"description_reference"}],"meta":{"schema_version":"4.0.0","last_updated":"2026-03-25","timestamp":"2026-05-14T01:27:05.293Z"}}