I'm trying to figure out what is the best way to zone my first floor. I have 2 zones to play with. There are 5 bedroom and a living area on the first floor. Should I zone 2 most commonly used room plus the upper living as one zone and the other 3 rooms as zone two? Or all bedrooms as zone one and upper living as zone two. I'm thinking of how the return air can be channelled back to the temperature sensor located in the upper living area.
Any AC expert out there who can help?