Professor Ermann has authored or co-authored eight journal papers in the field of acoustics, and presented more than 30 papers on building systems. He authored the book Architectural Acoustics Illustrated (Wiley, 2015), which NCARB turned, verbatim, into a seven-part "Continuum Education" course. He is the former Undergraduate Architecture Program Co-chairman, and has earned two AIA design awards, two School of Architecture teaching awards, research awards from both the school and the state AIA chapter, and in 2019, the AIA Virginia Award for Distinguished Achievement for contributions to the profession as an educator and researcher.

Ermann's design for his own Bubble Wrap House earned an International Architizer A+ Award. Prior to joining the VT faculty Professor Ermann was an acoustical consultant in New York City and Florida. He received a bachelor of science in mathematics from Tulane University and a master of architecture degree from the University of Florida. He was the first person to pass all six ARE 5.0 divisions and enjoys hosting ARE Building Systems prep courses for those in practice. He’s taught over 1,000 at his in-person ARE exam prep seminars for AIA New York, AIA Miami, AIA Northern Virginia, AIA New Mexico, AIA Triangle (Raleigh), AIA Houston, AIA Alaska, and AIA Washington DC seminars--and more than 15,000 with his Amber Book online course.