Friends, Colleagues Celebrate Willers at Retirement Party April 06, 2023 A retirement party for former IIBEC President John Willers (2008–2009), F-IIBEC, RRC, PE, founder of Rooftop System Engineers, brought out friends and colleagues for a celebration of Willers and all that he has accomplished during his career. Willers, who officially retired at the end of March, was the eighth recipient of the RRC designation from […] Read More
