Tackling climate change one building at a time At Petersen Engineering, we design buildings with fully integrated MEP/FP systems. Critical to our success is our “keep it simple” approach. We start by finding ways to reduce energy demand. Then we consider cost effective and simple solutions that ensure your building performs well throughout its whole lifecycle, while maximizing comfort and building quality. We stand behind the belief that high performing, energy efficient buildings can be beautiful, durable, comfortable, and affordable.