Kevin O’Toole. Exergyn, the company he co-founded, has patented a cutting-edge, emissions-free heat pump that contains no refrigerant gases. Picture: Fergal Phillips
Like most teenagers called to a meeting with the school guidance counsellor, Kevin O’Toole had no real idea what he wanted to do with his life. “I grew up wanting to be a train driver. My dad was a plumber, I was always around mechanical things and I liked them. When I was 16, deciding what to do with the guidance counsellor, I wasn’t sure what a mechanical engineer did. He told me...