Posted By MSG79 on 05 Nov 2012 04:38 AM

The incoming air would go directly to a ground loop (back outside) of air sealed PEX piping.

I'm thinking that the fans needed to move all this air through the "air sealed" tubes would take away from the incremental energy saved. Even though the in ground tubing was perfectly air sealed we are still talking about air being passed through it from the outside. I believe eventually mold will grow inside that tubing.

When I first began this thread, wow almost three years ago, I had not yet purchased a lot for my planned retirement home. Well, I now have a lot in Georgia, where it is nice and humid. :-) The mold issues concerning this type system have caused me to drop the idea. Like someone mentioned earlier, you really need to give these types of ideas a good reality check.

It is my understanding that the rehau system has a filter and is anti-microbial.  But at about $2000 I can't see the payback.