Duncan Isenhower For a decade, Duncan has managed the installation, service and repair of machines for the top manufacturers of fitness equipment including Precor, Cybex, Technogym, Startrac, Freemotion just to name a few. Providing friendly, top quality, "white glove" service propelled Duncan onto the short list of highly-requested service technicians covering Central Texas. At Austin Fitness Rentals, Duncan is leading the expansion efforts of the finest rental and service team in Texas. His goal is to provide the best solution to meet all of your equipment needs. When he’s not providing stellar customer service, you can most likely find Duncan on the golf course or playing in a gig somewhere in or around Austin.