We study the distributed control of heating, ventilation, and air conditioning systems in buildings. We present and compare two control design techniques. In the first part, a one-step distributed model predictive controller (DMPC) is introduced. We compute the explicit state-feedback solution and show how to implement it on existing networked buildings control platforms. In the second part, we discuss a control logic currently used in the buildings industry called “Trim and Respond”. We show that “Trim and Respond” controllers can be seen as a special class of one-step DMPC algorithms. We conclude the paper with a simulation study which shows the DMPC control design and its equivalence with “Trim and Respond” heuristics.