The CIE certification will demonstrate that you can do the following:
Your clients want to be confident that they are hiring a trustworthy and competent consultant. One of the best ways to demonstrate your competency is to obtain a third-party accredited certification, such as the Certified Indoor Environmentalist (CIE). The CIE certification is sponsored by the American Council for Accredited Certification (ACAC).
The CIE Prep Course will prepare you to pass the CIE examination. The examination is offered at computerized testing centers throughout the US and beyond. Certain experience requirements and fees apply to students obtaining certification; however, no experience is required to participate in the CIE Prep course.
Upon registering, you're given six months to complete this program.
here for more information on financial assistance.