Humidifier maintenance is a big issue because when water evaporates inside a humidifier it can leave behind minerals that coat the inside of the machine with hard, gray deposits. Jodi Zirbel, a spokesperson for Aprilaire, said home humidifiers are growing in popularity because of health concerns. EPA statements about indoor air pollution have made homeowners more willing to invest in humidifiers, dust filters and fresh air exchangers. The American Lung Association advises consumers to use humidifiers carefully, being sure to keep them clean and set at the lowest setting that provides comfort. In a statement issued Feb. 1, the association said humidifiers can help people with respiratory problems breathe more easily.
Excess humidity can lead to the growth of dust mites and airborne bacteria.
The association says humidity settings should never be set above 50 percent, and that any signs of condensation are signs that the indoor humidity is too high. Some content on this site has been supplied by paid sponsors.