Excellent forum. Lots of information. Hope someone can answer my question. I have an Infinity 96 heating approximately 4000 sq ft 2 floor home. I want to remove the basement from the equation and add something else in the future. I want to zone the 1st floor from the second floor. I was told to have an evolution system placed, run a new trunk for the 1st floor and place 2 dampers to make 2 zones. At this point, cost is a factor. What other options are out there and is almost $5400 too much to place 40 ft of new trunk and the zone system? Thanks for any advise.