[Greenbuilding] Air-heated slabs

[RT]

And while I'm here, and for the same reason (quiet list) I thought I'd  
toss the following  out for comment.

In my immediate neighbourhood there two expanded polystyrene (EPS)  
insulating concrete form (ICF) homes (one built two years ago, one  
currently being built) that chose to use heated air rather than hydronics  
to heat the slab-on-grade floor.

They both use closely-spaced runs (24" o/c or less ?) of small diameter (4  
inch ? or less ) sheet metal ducts embedded in the concrete.

Me ? I think that it's a dumb idea for a number of reasons but it'd be  
interesting to hear from others what they think , pro or con.


-- 
=== * ===											AOD257
Rob Tom
Kanata, Ontario, Canada

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