HHI and the Home Ventilating Institute (HVI) jointly released a White Paper, “Victory over VOCs - Energy-Saving Fans and Other Devices Help Keep Indoor Air Fresh.” It explains that “IAQ has been a growing concern, particularly when it comes to newer, energy-efficient homes. While tight, well-insulated homes save money and are better for the environment, they may also trap unhealthy indoor pollutants inside.”
While energy-saving homes are good at keeping in heat or air conditioning, this may cause them to retain high levels of harmful compounds, the paper points out. The U.S. Environmental Protection Agency (EPA) estimates that concentrations of volatile organic compounds (VOCs) can be up to 10 times higher indoors than outdoors. (VOCs are carbon-based gases emitted into the air by common household products or furnishings.)
“A few of the more obvious sources are solvents, cleaning products, fuels, and cigarette or wood smoke,” said Rathey. In addition, flooring, upholstery, fabrics, paints/varnishes, and cabinetry can also emit VOCs. Other potential sources can include cosmetics, dry-cleaned clothing, hobby and craft supplies, newspapers, photocopiers/printers, moth balls, and air fresheners.
The severity of their health risks depends on factors such as which compounds are emitted (benzene, for example), concentration levels, and the length of the exposure time.