How do combustion pollutants get into the home?
Combustion pollutants enter the home from a variety of sources. Any heating appliance that burns fuels—furnaces, boilers, water heaters, fireplaces, stoves, space heaters, ranges and clothes dryers—may introduce combustion gases. These pollutants are also produced by tobacco smoking, burning of candles, automobile exhaust entering from a garage, and activities involved in the use of the internal combustion engines, burning, welding or soldering. Combustion gases and particles also come from chimneys and flues that are improperly installed or maintained and from cracks in furnace heat exchangers. Pollutants from fireplaces and wood stoves with no dedicated outdoor air supply can be back-drafted from the chimney into the living space, particularly in weatherized homes.
Combustion pollutants enter the home from a variety of sources. Any heating appliance that burns fuels—furnaces, boilers, water heaters, fireplaces, stoves, space heaters, ranges and clothes dryers—may introduce combustion gases. These pollutants are also produced by tobacco smoking, burning of candles, automobile exhaust entering from a garage, and activities involved in the use of the internal combustion engines, burning, welding or soldering. Combustion gases and particles also come from chimneys and flues that are improperly installed or maintained and from cracks in furnace heat exchangers. Pollutants from fireplaces and wood stoves with no dedicated outdoor air supply can be back-drafted from the chimney into the living space, particularly in weatherized homes. Carbon monoxide buildup can occur several ways: when flues or chimneys become blocked so exhaust can not be vented to the outside; when a fuel burning furnace has a cracked or rusted heat exchanger allowing combustion gase
