Learn the methods, practices, and solutions that create a healthy indoor environment. Select from our twenty-six self-study courses, each of which will help you improve the indoor environment of homes, offices, and schools, and support the health and wellness of all who dwell, work, or visit there.

Our courses are comprised of text and supporting visual information contained in graphs, charts and tables. They are readily available online, and are also available to be downloaded as PDFs so that you may study while away from your computer. Please note that our mentored correspondence course manual, Natural Healthy Buildings, IBE 101, is shipped to you along with a GaussMeter, a radon testing kit, a water testing kit, and additional required reading.

Preview any of our courses for free, get started by clicking any circle here below: