I put in an oil-fired boiler and zoned hydro-air system a few years back.  I oversized the boiler for the major addition we are doing now.  I am REALLY glad I picked hydro-air. 

We will have 2 additional zones with separarte air handlers/condensor units.  The problem is their remote locations.  I imagine that running boiler water over some distance (as much as 60′ in my case) would cause a lot of energy loss.  The standard closed-cell foam sleeves just won’t cut it.

Does anyone know of copper piping that is already super-insulated, or a manufacturer of high r-value insualtion which can be applied to the pipe runs?  I know this must exist, I just don’t know who manufactures it.

Thanks in advance!