When I turn on my hot water in my shower (furthest point from HW heater) it can take a couple of minutes of running the hot water full on to get anything approaching hot out. I started reading about these Hot Water Recirculation pumps/set-ups, but have a couple of questions. I am on a slab with all plumbing under ground.
1) Could I use PEX and run the return line through my attic, via recirculation pump) back to the HW heater?. I have used PEX before to bypass a leaky underground copper, and it has worked well for me so far (knock on wood).
2) What would my alternative be if using PEX was unacceptable?
I appreciate any help... thanks