Pex-Al-Pex for Heating?

AKO

Pex-Al-Pex piping is rated for 180'F at 125 psi, but I haven't seen that is gets much press for use in conventional hot water heating systems. (I suppose that because water at higher temperatures than 180'F can be circulated, it may not be a good idea.)

I am changing over to a hot water heating system in a contemporary house, and it's going to be difficult to get from point A to point B in some cases. I'd love to know that I could use Pex-Al-Pex as an alternative for some areas.

Anyone have any experience with this? Or are you finding that the local inspectors wouldn't allow it, regardless?

Mike Reavis_2

The rating is also 200 degrees@ 100 psi.

> Pex-Al-Pex piping is rated for 180'F at 125 psi,

> but I haven't seen that is gets much press for

> use in conventional hot water heating systems.

> (I suppose that because water at higher

> temperatures than 180'F can be circulated, it may

> not be a good idea.)

>

> I am changing over to a

> hot water heating system in a contemporary house,

> and it's going to be difficult to get from point

> A to point B in some cases. I'd love to know

> that I could use Pex-Al-Pex as an alternative for

> some areas.

>

> Anyone have any experience with

> this? Or are you finding that the local

> inspectors wouldn't allow it, regardless?

Mike Reavis_2

The rating is also 200 degrees@ 100 psi.

The manufacturers make fittings, and adapters to get you from plastic to copper. It is a great alternative to cutting and sweating pipe. I ran 50 feet of the stuff through a bay space above a dropped ceiling, and into the roughed area for the baseboard in about 15 minutes. Insulate the pipe to get your temp @ the radiation.
Mike

steve gates

by all means

use the orange for hot and blue for cold only. I use it almost exclusivly(both domestic and heat).

It almost never hurts to check with the local inspectors. And sometimes they learn something, as do we.