Hi Im currently building a new home , it will be a split entry on a concrete slab, 28x40,, so roughly 1200 sq foot per floor. I will have in floor heating in the slab with 2inch sm Styrofoam under the concrete. The walls will be r35 with the standard r-20 in the walls with 2 inch sm on the outside walls.Ive been looking at several models and am now dizzy with all the info. I was looking at a Harman SF 260 but this is not a gassifier and seems to be a wood hog but far less cheaper then the gassifier units. Which one would be the most efficient wheter it be strictly wood boiler or the gassifier unit. I looked at the empyre elite and wasn't so sure..i looked at the central boiler but have read a lot of negative reviews about their steel walls being to thin and no customer service whatsoever...then I looked at the EKO..any info would be greatly appreciated...Thanks....This will be to heat the home and also hot water supply.