Ron Kliewer started out framing houses and remodeling homes, becoming a custom home builder and general contractor. He has worked around the world, building everything from an outhouse to nuclear power plants while wearing many hats, which include framer, cabinetmaker, electrician, plumber, special inspector, and general contractor. He has focused on heat pump water heater performance research for the last few years. His most current work is with Southern California Edison, the Electric Power Research Institute, and South Coast Air Quality Management District conducting energy retrofit inspections and working in building science and energy storage projects.