I am hoping that some of you can share your insight with me.
I live in a two story house with forced air heating/cooling. On the upper level I have return air vents in the master bedroom and in the hallway. There are upper and lower vents in each location. I have heard and read differing views on the proper operation of these vents. It seems that the traditional, most common, but not necessarily right method is to open the upper vents in the summer(to allow hot air an escape route), and the lower vents in the winter. However, I have read from one "professional" that the correct thing to do is to have both the upper and lower vents open, that while it may seem logical to have the lower closed in summer, and the upper closed in winter, you are actually restricting air flow and affecting the performance of your equipment, because you don't have enough air flowing over the coils.
If you could share your opinions with me, it will help me to make an educated decision of my own.
Thanking you in advance...