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Why Do We Need Purifiers and Humidifiers?
Nearly 40 years after the passage of the Clean Air Act, more than half of all Americans still live in areas that don't meet clean-air standards. Dirty air can increase the risk of heart disease, stroke, cancer and respiratory problems. While everyone suffers some harm, the 22 million Americans with asthma are particularly vulnerable.
Indoor air pollution, building-related illness, and "sick building syndrome" have received increased attention over the last several years. Research, conducted by various agencies such as the Environmental Protection Agency (EPA), has shown that the quality of indoor air can be as much as 10 times more polluted than the outdoor air. Given the fact that many people spend as much as 90 percent of their time inside, the health risk due to indoor air pollutants is a great public health concern.
Indoor air quality can affect people's health and can have economic and legal implications. For example:
Pollutants can cause or contribute to short- and long-term health problems, including asthma, respiratory tract infections, allergic reactions, headaches, congestion, eye and skin irritations, coughing, sneezing, fatigue, dizziness and nausea.
Indoor air pollutants can cause discomfort, and reduce attendance and productivity. Recent data suggest that poor Indoor Air Quality can reduce a person's ability to perform specific mental tasks requiring concentration, calculation, or memory.
Indoor air pollutants quicken building deterioration. For example, uncontrolled moisture can result in mold growth that has foul odors and leads to the structural decay of building components.
Poor indoor air quality strains relationships among employees, family members, parents, teachers, students and school administrations.
What Causes Indoor Air Problems?
Indoor pollution sources that release gases or particles into the air are the primary cause of indoor air quality problems in homes. Inadequate ventilation can escalate indoor pollutant levels by not letting in enough cleaner outdoor air to breakdown emissions from indoor sources and by not carrying indoor air pollutants out of the home. High temperature and humidity levels can also increase concentrations of some pollutants.
Pollutant Sources
There are several sources of indoor air pollution in every home. These include combustion sources such as oil, gas, kerosene, coal, wood, and tobacco products; building materials and furnishings as diverse as older, asbestos-containing insulation, wet or damp carpet, and cabinetry or furniture made of certain pressed wood products; products for household cleaning , personal care, or hobbies; central heating and cooling systems and humidification devices; also outdoor sources such as radon, pesticides, and outdoor air pollution.
The relative importance of any single source depends on how much of a given pollutant it emits and how hazardous those emissions are. In some cases, factors such as how old the source is and whether it is properly maintained are significant. For example, an improperly adjusted gas stove can give off significantly more carbon monoxide than one that is properly adjusted.
Some sources, such as building materials, furnishings, and household products like air fresheners, release pollutants more or less continuously. While other sources, related to activities carried out in the home, release pollutants intermittently. These include smoking, the use of unvented or malfunctioning stoves, furnaces, or space heaters, the use of solvents in cleaning and hobby activities, the use of paint strippers in redecorating activities, and the use of cleaning products and pesticides in house-keeping. High pollutant concentrations can remain in the air for very long periods after some of these activities.
Nearly 40 years after the passage of the Clean Air Act, more than half of all Americans still live in areas that don't meet clean-air standards. Dirty air can increase the risk of heart disease, stroke, cancer and respiratory problems. While everyone suffers some harm, the 22 million Americans with asthma are particularly vulnerable.
Indoor air pollution, building-related illness, and "sick building syndrome" have received increased attention over the last several years. Research, conducted by various agencies such as the Environmental Protection Agency (EPA), has shown that the quality of indoor air can be as much as 10 times more polluted than the outdoor air. Given the fact that many people spend as much as 90 percent of their time inside, the health risk due to indoor air pollutants is a great public health concern.
Indoor air quality can affect people's health and can have economic and legal implications. For example:
Pollutants can cause or contribute to short- and long-term health problems, including asthma, respiratory tract infections, allergic reactions, headaches, congestion, eye and skin irritations, coughing, sneezing, fatigue, dizziness and nausea.
Indoor air pollutants can cause discomfort, and reduce attendance and productivity. Recent data suggest that poor Indoor Air Quality can reduce a person's ability to perform specific mental tasks requiring concentration, calculation, or memory.
Indoor air pollutants quicken building deterioration. For example, uncontrolled moisture can result in mold growth that has foul odors and leads to the structural decay of building components.
Poor indoor air quality strains relationships among employees, family members, parents, teachers, students and school administrations.
What Causes Indoor Air Problems?
Indoor pollution sources that release gases or particles into the air are the primary cause of indoor air quality problems in homes. Inadequate ventilation can escalate indoor pollutant levels by not letting in enough cleaner outdoor air to breakdown emissions from indoor sources and by not carrying indoor air pollutants out of the home. High temperature and humidity levels can also increase concentrations of some pollutants.
Pollutant Sources
There are several sources of indoor air pollution in every home. These include combustion sources such as oil, gas, kerosene, coal, wood, and tobacco products; building materials and furnishings as diverse as older, asbestos-containing insulation, wet or damp carpet, and cabinetry or furniture made of certain pressed wood products; products for household cleaning , personal care, or hobbies; central heating and cooling systems and humidification devices; also outdoor sources such as radon, pesticides, and outdoor air pollution.
The relative importance of any single source depends on how much of a given pollutant it emits and how hazardous those emissions are. In some cases, factors such as how old the source is and whether it is properly maintained are significant. For example, an improperly adjusted gas stove can give off significantly more carbon monoxide than one that is properly adjusted.
Some sources, such as building materials, furnishings, and household products like air fresheners, release pollutants more or less continuously. While other sources, related to activities carried out in the home, release pollutants intermittently. These include smoking, the use of unvented or malfunctioning stoves, furnaces, or space heaters, the use of solvents in cleaning and hobby activities, the use of paint strippers in redecorating activities, and the use of cleaning products and pesticides in house-keeping. High pollutant concentrations can remain in the air for very long periods after some of these activities.
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