I am about to pour the slab for my new house, and have some PEX questions regarding water supply distribution (not talking about radiant heating).
In my PEX research I keep finding
essentially 2 methods: home-run (where each fixture has a hot and cold
line run directly from a central manifold), or trunk-and-branch, where
the fixtures are hooked up in sequence and sized down at each fixture
for pressure (the way that most copper systems are installed).
But I was wondering if a hybrid of home-run
and trunk-and-branch might not make sense. In other words using a
home-run system for all the hot water distribution, and
trunk-and-branch for the cold water distribution. It would seem you
would have the home-run benefits of energy efficiency and less wait time
for the hot water, but also the trunk-and-branch benefits of fixture pressure and less
material costs for the cold water. Has anyone ever done this? Am I
overlooking something obvious that would make it a bad idea?
|