Here in PHX I get all the radiant heat I need from the sun.
The hot/cold water plumbing in my house is AquaPEX. I am doing a little remodelig in my house and want to tee into the hot/cold water lines for a laundry sink. I have all the other wirsbo AquaPEX tools and fittings, I just need the 1/2" tubing (60' or so).
I have only found 8' FlexPex lengths at the 3 large hardware stores.
SAN Plumbing Supply Scottsdale at 101 and Princess Dr. 480-998-3880 and ask for Don. Open Saturday mornings. But you will have to buy a roll, they do not cut it.