Welcome to the Better Building Systems throwback series. In this episode we are recovering another great past podcast episode from the archives to bring to you! This episode is originally from our Building Management Systems podcast. We discuss the importance of proper control loop tuning. We discuss the three different closed control loops P (proportional), PI (proportional and integral), and PID (proportional, internal, and derivative) and the tuning aspects of each along with the characteristics of each control loop. Ultimately, a control loop should function like the cruise control on your car, smooth and steady and able to respond to changes such as hills and speed changes with ease. Our industry experts Mark and Rich also dive into the evolution of the control loop and give some personal and professional experiences on the good, bad, and ugly of control loop tuning.