Bill is the President & Owner of TruTechTools.com, a webstore for high tech tools used to ensure energy efficiency in homes and buildings. Using his background as a mechanical engineer and his leadership role in the HVAC and Building Performance industries, he regularly teaches and writes on technically complex topics to a wide range of audiences on the applications of testing and measurement instrumentation in building science, healthy homes, Indoor Air Quality, weatherization, and HVACR. Bill hosts the Building HVAC Science Podcast as part of the BlueCollarRoots.com media network and the RESTalk podcast for RESNET.us, the Home Energy Rating organization.