Since its inception in 1981, Davis Energy Group has continually remained at the forefront of assessing new and emerging energy efficiency technologies. These efforts have kept DEG at the cutting edge in understanding everything from discrete component performance to the integrated performance of buildings. The focus of our work has been in advanced HVAC systems, water heating performance, and building envelope optimization in different climates. This broad expertise encompasses performance issues, technology costs, implementation barriers, and optimization for specific applications. This knowledge filters through all the work we do, benefiting codes and standard activities, as well as implementation activities and net zero energy design activities. Our clients include utilities, federal and state government agencies, and manufacturers.