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I've seen design's done both ways does one work better than the other Out 1 Out 2 Out 3 Return 3 Return 2 Return 1 Out 1 Return 1 Out 2 Return 2 Out 3 Return 3

Any suggestions on how to lift rebar 1" so that the pex system will be at the optimum height in a 4" cement slab. Contractor suggested stones (sounded too inconsistent to me) and the rebar chairs are too high. If we could do this inexpensively it would be great!

I keep reading posts that specify having a factor of R25 under a hydronic heating system floor. How exactly is this achieved. The $35 dollar range polystyrene carries an R10? Am I missing something here?:headscrat

We're looking at radiant heat costs for start up (sticker shock to state the least) but nowhere have we seen actual operating costs when compared to gas forced air, radiant tubes, etc. Given it is a comfortable heat, has a huge set up price, but is there any benefit in the operating costs when...