Sometimes I wonder if builders ever give thought to where they place the thermostats, light switches return vents and so on. My best guess is that not much thought is given to such as evidenced by what I refer to as the "Trifecta Wall" at our house. It was given that name since it has three winning combinations, that wall is home to the door bell box, the return vent and the thermostat is smack in the middle! For your viewing pleasure here is a shot of it.