Combustion Pollutants

This page last reviewed January 29, 2013

The major indoor combustion pollutants are carbon monoxide (CO), nitrogen dioxide (NO2), particles (PM10) and polycyclic aromatic hydrocarbons (PAHs). At elevated levels, carbon monoxide causes headaches, fatigue, queasiness, and at very high levels, brain and heart damage and death. Other combustion pollutants can cause eye, nose, and throat irritation, and serious lung disease, including cancer. Smoke from cigarettes or wood burning contains a particularly toxic combination of many pollutants that can cause respiratory irritation and cancer. Young children, people with asthma, and people with heart or lung disease are especially vulnerable to the toxic effects of combustion pollutants. For more information on combustion pollutants see the links below.

A new California law requires that carbon monoxide detectors or alarms were to be installed by July 1, 2011 in all single family dwellings that have any kind of fuel type appliance (gas, propane, etc.) or an attached garage. All other dwellings with fuel appliances or an attached garage must have such devices installed by January 1, 2013. The CO detectors/alarms must be those approved by the California Office of the State Fire Marshall. For questions regarding the requirements of the law, please contact the State Housing Law Program at (916) 445-9471. For a list of CO alarms and detectors approved by the State Fire Marshall's Office, please see the third item below.

Go to HCD Bulletin

Carbon Monoxide Detectors are Now Required in California Homes (PDF 326 KB) - NEW!!

Go to State Fire Marshall's page

State Fire Marshall CO Information - NEW!!

Go to SFM approved CO alarms/detectors

Carbon Monoxide Detectors and Alarms Approved by the State Fire Marshall - NEW!!

Go to Health and Safety Code

Carbon Monoxide Poisoning Prevention Act of 2010 (16 KB) - NEW!!

Go to Indoor Poison: Carbon Monoxide video

Indoor Poison: Carbon Monoxide - Video

Go to ARB Press Release

ARB Press Release on Carbon Monoxide

Go to US EPA website on CO

U.S. EPA Information on Carbon Monoxide

Go to US CPSC website on CO

US Consumer Product Safety Commission (CPSC) Carbon Monoxide Q&A - NEW!!

Go to Combustion Pollutant Guideline

Combustion Pollutants in Your Home - Guideline No. 2 (htm) or (PDF 8 MB)

Go to Combustion Pollutant Supplement

Combustion Pollutants in Your Home - Supplement to Guideline No. 2 (PDF 1 MB)

Go to Residential Cooking Study

Residential Cooking Exposure Study - Final Report

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