{"hq_id":"hq-p-hom-000067","name":"Unvented Gas Space Heaters and Indoor Propane Appliances","category":{"primary":"household","secondary":"","tags":[]},"product_tier":"HOM","overall_risk_level":"low","description":"400 deaths/year; 50,000 ER visits; no federal CO detector mandate; generators 'indoor safe' marketed without CO detectors Key materials: Carbon Monoxide from Residential Combustion Appliances.","synthesis":{"derived_risk_level":"moderate_to_high","synthesis_confidence":0.5,"synthesis_method":"compound_composition","context_used":"human_child","context_source":"product_users","exposure_modifier":0.935,"vulnerability_escalated":true,"escalation_reason":"Child exposure group","compounds_resolved":2,"compounds_total":2,"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":{"overall_risk":"low","primary_concerns":["Overall risk level: low."],"sensitive_populations":"","exposure_routes":""},"exposure":{"routes":["dermal"],"contact_types":["dermal","inhalation"],"users":["adult","child"],"duration":"minutes","frequency":"weekly","scenarios":["Incidental mouthing or hand-to-mouth transfer by children"],"notes":"Exposure to Unvented Gas Space Heaters and Indoor Propane Appliances occurs via dermal. Children and infants face higher exposure per body weight due to developing detoxification systems, higher surface-area-to-weight ratio, and behavioral factors (mouthing, crawling)."},"consumer_guidance":{"red_flags":[{"indicator":"Identified safety concern","meaning":"Overall risk level: low.","action":"Review safety data; follow use guidelines; consider alternatives"}],"green_flags":[{"indicator":"EPA Safer Choice certified","meaning":"Meets EPA criteria for safer chemical ingredients","verification":"Look for EPA Safer Choice label on packaging"}],"what_to_ask":[{"question":"Is this product safe for use around children and pets?","why_it_matters":"Many household chemicals are formulated for adult use; children and pets have higher exposure per body weight and developing organ systems"}],"alternatives":[{"name":"Vented gas space heaters","notes":"Direct venting to outdoors eliminates indoor combustion byproduct exposure"},{"name":"Electric space heaters","notes":"No combustion or ventilation requirements; eliminates carbon monoxide risk"},{"name":"Heat pump systems","notes":"Energy-efficient and no indoor air quality risks from combustion"}],"notes":null},"regulatory":{"applicable_regulations":[{"jurisdiction":"USA","regulation":"Consumer Product Safety Act (CPSA) + FHSA","citation":null,"requirements":"Household products must not present unreasonable risk of injury. Federal Hazardous Substances Act requires labeling of hazardous household products (corrosive, flammable, toxic, irritant).","compliance_status":null,"effective_date":null,"enforcing_agency":null,"penalties":null,"source_ref":null},{"jurisdiction":"USA","regulation":"EPA Safer Choice / Design for the Environment","citation":null,"requirements":"Voluntary program. Products meeting Safer Choice criteria can display the label. Requires disclosure of all ingredients and safer chemical alternatives.","compliance_status":null,"effective_date":null,"enforcing_agency":null,"penalties":null,"source_ref":null},{"jurisdiction":"EU","regulation":"CLP Regulation (EC) No 1272/2008","citation":null,"requirements":"Classification, labelling, and packaging of hazardous chemical products. GHS-aligned hazard communication. Signal words, pictograms, and precautionary statements required.","compliance_status":null,"effective_date":null,"enforcing_agency":null,"penalties":null,"source_ref":null}],"certifications":[{"name":"CPSC General Safety","issuer":"CPSC","standard":"Consumer Product Safety Act","scope":"General consumer product safety requirements"}],"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":null,"disposal_guidance":"Varies by material; check local recycling guidelines","hazardous_waste":false,"expected_lifespan":"1-3_years"},"formulation":{"form":"composite_material","key_ingredients":[{"hq_id":null,"name":"Propane (C3H8) or natural gas (CH4) fuel","role":"active_ingredient","concentration_pct":"95-99"},{"hq_id":null,"name":"Carbon monoxide CO (incomplete combustion byproduct)","role":"additive","concentration_pct":"variable ppm (hazard)"},{"hq_id":null,"name":"Nitrogen dioxide NO2 (combustion byproduct)","role":"additive","concentration_pct":"variable ppm"},{"hq_id":null,"name":"Particulate matter PM2.5 (combustion soot)","role":"additive","concentration_pct":"trace ug/m3"}],"certifications":[]},"materials":{"common":[{"material_id":"hq-m-env-000035","material_name":"Carbon Monoxide from Residential Combustion Appliances","component":null,"prevalence":"common"}],"concerning":[{"material_id":"hq-m-env-000035","concern":"CDC burden: ~400 non-fire-related CO deaths/year; ~50,000 ER visits; ~150,000 documented exposures; CO = most common environmental toxic exposure in US","compounds_of_concern":[],"source_refs":[]},{"material_id":"hq-m-env-000035","concern":"CO detector adoption ~60% of homes; ~40% of US homes have NO CO detector; no federal mandate requiring residential CO detectors; IRC Section R315 requires CO alarms in new construction but state/local adoption variable; HUD required CO alarms in federally assisted housing only 2022","compounds_of_concern":[],"source_refs":[]},{"material_id":"hq-m-env-000035","concern":"Post-disaster surge predictable and recurring: Houston 2021 (100+ CO ER visits in 48 hours from indoor generators); Puerto Rico Hurricane Maria (37 deaths); predictable scenario repeats after every major storm; no federal preparedness mandate","compounds_of_concern":[],"source_refs":[]},{"material_id":"hq-m-env-000035","concern":"Unvented gas space heaters and portable generators sold with minimal safety guidance; generators marketed as 'indoor safe' but require CO detector and adequate ventilation — devices not bundled with detectors; CPSC voluntary standard does not mandate CO detector inclusion","compounds_of_concern":[],"source_refs":[]},{"material_id":"hq-m-env-000035","concern":"Potential contaminant: Ultrafine particulate matter (PM0.1)","compounds_of_concern":[],"source_refs":[]},{"material_id":"hq-m-env-000035","concern":"Potential contaminant: Secondary organic aerosol formation products","compounds_of_concern":[],"source_refs":[]}],"preferred":[]},"compound_composition":[{"hq_id":"hq-c-org-000043","compound_name":"Carbon monoxide","role":"base","typical_concentration":null},{"hq_id":"hq-c-ino-000010","compound_name":"Nitrogen dioxide (NO₂)","role":"base","typical_concentration":null}],"identifiers":{"common_names":["unvented gas space heaters and indoor propane appliances","unvented gas space heaters","indoor propane appliances","unvented gas space heaters and indoor propane appliance"],"brands":["Mr. Heater Portable Buddy","Dyna-Glo heaters","vent-free gas fireplace","portable generators"],"aliases":[],"manufacturer":null},"brand_examples":[{"brand":"Generic Mass-Market Brand A","manufacturer":"Consumer Products Corporation","market_position":"mass_market","notable":"Widely available mass-market option"},{"brand":"Generic Mass-Market Brand B","manufacturer":"Consumer Goods Ltd","market_position":"mass_market","notable":"Popular budget alternative"},{"brand":"Premium Brand A","manufacturer":"Premium Consumer Inc","market_position":"premium","notable":"Upscale premium positioning"},{"brand":"Professional Brand","manufacturer":"Professional Products Co","market_position":"professional","notable":"Professional/salon-grade option"},{"brand":"Specialty Eco-Brand","manufacturer":"Natural Products Ltd","market_position":"premium","notable":"Sustainable/natural product line"}],"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":[{"id":"src_001","type":"regulatory","title":"CDC: Carbon Monoxide Poisoning Burden ~400 Deaths/Year, 50,000 ER Visits, Most Common Environmental Toxicant","year":2023,"inherited_from":"hq-m-env-000035"},{"id":"src_002","type":"regulatory","title":"CPSC: Indoor Generator Use Single Largest CO Death Source (~170 deaths/year)","year":2022,"inherited_from":"hq-m-env-000035"},{"id":"src_003","type":"report","title":"Houston Winter Storm Uri 2021: 100+ CO Poisoning ER Visits in 48 Hours from Indoor Generators","year":2021,"inherited_from":"hq-m-env-000035"},{"id":"src_004","type":"regulatory","title":"HUD CO Alarm Mandate for Federally Assisted Housing (2022)","year":2022,"inherited_from":"hq-m-env-000035"}],"meta":{"schema_version":"4.0.0","last_updated":"2026-03-25","timestamp":"2026-05-14T01:27:04.537Z"}}