Hi, new member here.
We are building a new house in SC Wisconsin. 32x44 envelope, full main and first floor, 32x24 loft. There will be no basement as our soil is pretty bad (clay, rocks and very wet), basically slab on grade and 2.5 story house. No carpeting, all tile or wood floors. Total heatloss is ~44K BTU/hr.
We are general contracting together with our friend HVAC guy (he has the both HVAC and GC license, insurance) and subbing only concrete and plumbing (by the code).
Now, we are pretty much decided on hydronic floor heating. As we are getting mixed advice, there are questions we have:
1. Visquine over the grade, then 2-4in of sand, 2in foamular, pex piping, mesh w/ties to press it down and then 4in concrete floor. (other options are foamular only 8ft around perimeter, no visquine, staples instead of mesh).
2. One zone in the main floor, 2 zones in first floor, 1 zone (loft w/ 2 bedrooms) on the second floor.
3. Gas boiler with big tank electric water heater in front of it also running hot water (option is just a holding tank).
4. Biggest problem... AC/vent
Any advice or help is greatly appreciated as we would like to avoid putting conventional H/AC furnace.
BTW, I forgot to mention that both floors are 16" trusses (2x4 plates and webs), most of exterior walls are 2x6, tall south wall (with big windows) is 2x8, roof trusses allow for R-50.
[Edited by witom on 10-21-2006 at 02:43 PM]