When I hired a professional to repair the fax machine, I was surprised that he had many skills. I was expecting the guy to just repair the thing & be on his way, but then he started pointing out other troubles in the workplace, and he said the air quality wasn’t so good & the ductwork plan was rather filthy. He said that was likely the issue behind us experiencing such terrible air quality; When I asked him if he was some sort of Heating, Ventilation plus A/C professional on the side, he smiled & said he was indeed NATE certified. He explained that he was basically a jack of all trades. He could work on cars, household equipment, & do Heating, Ventilation plus A/C upgrades & repair work. I didn’t expect all that, I had my secretary just send out to have the fax machine repaired because I didn’t recognize like purchasing a new a single. Well, he said in his van, he had all the tools needed to take care of the ductwork cleaning job if I wanted. I got a fast bid & it seemed adequate enough. Not to mention, he spoke of all the concerns it could repair in the office locale, especially with uneven heating & cooling. So he got to work with the duct cleaning & this guy did an impressive job. Even other employees were asking why the repair guy was cleaning the ductwork system. I told people what he told me, he was a jack of all trades & he was certified as an expert Heating, Ventilation plus A/C professional. I realize that not many people have so many skills, so I took his supplier card & told him I would be calling him again for a heating plan tune-up before the Winter started.