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Forced air
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Steve_210
Member Posts: 647
I have a customer who is heating his home with forced air (I know - that's what they want) the home is very well insulated with foam spray insulation - probably bordering passive. I am considering running the supply and return to reach hot water coil with Pex (home runs from the boiler). Is there a good type of insulation for pex? Or what is the best? Or is it even necessary? I have really only used pex for radiant heat before now.
Thanks in advance.
Thanks in advance.
0
Comments
-
I'd use
the same closed cell foam snap on stuff I'd use for any hot water pipe...
Main thing with PEX and hot water is support -- the stuff sags like crazy when it gets hot. I might even put it in a tray. But you probably know that...Br. Jamie, osb
Building superintendent/caretaker, 7200 sq. ft. historic house museum with dependencies in New England0 -
Copper
Why not use copper. What is actual reason for using pex?Gennady Tsakh
Absolute Mechanical Co. Inc.0 -
reasons are
Less cost and less labor
Is copper really any better?0 -
Yes, copper is better
in my humble opinion -- if only because it doesn't need as much support. That said, I use PEX in applications where it is difficult to "thread" copper into an existing chase, or where copper solder joints would be very close to old wood (fire hazard). Both of which are problems in the building I superintend and maintain...Br. Jamie, osb
Building superintendent/caretaker, 7200 sq. ft. historic house museum with dependencies in New England0 -
less labor
actually if you do proper support it is more labor. and after you install 90 degree fittings it will be even more labor and much higher flow resistance.Gennady Tsakh
Absolute Mechanical Co. Inc.0 -
Does anybody use
Insulation on pex if so what type0 -
Dumb Question
Why aren't they just going with a HE forced air furnace? Do they already have a boiler for other parts of the home?
Rob0 -
Condensing boiler
We are using a knight with an indirect.
It's hard to explain but in this situation its easier to use pex and bracket it properly than use copper0
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