Excessive humidity is the most dangerous humidity condition for homes in any climate. Excess humidity provides the perfect senerio for the growth of mold and dust mites, and adds to wood rot and material degradation. Low humidity usually occurs in the winter months, causing dry itchy skin, nose bleeds, and a sensitivity to chills and drafts. There are many ways to control the humidity in your home. For example, running the bathroom exhaust fan during and for 20 minutes after a shower can help control humidity. Cleaning gutters, downspouts, and directing water away from foundation walls is another effective way to control humidity levels. Download this fact sheet to learn more about ways to control humidity levels and improve indoor air quality.