I'm no plumber, but 1/4" line sounds too small to me. You'll have great pressure, but no volume, and I believe higher volume will get the hot water there quicker.
You are right... I misspoke. I thought I had read 1/4" when I was looking at manifolds but now looking at it it seems that they are 1/2". Sorry about that.I'm no plumber, but 1/4" line sounds too small to me. You'll have great pressure, but no volume, and I believe higher volume will get the hot water there quicker.
I think 3/4" is way too high. Most homes are supplied with 3/4" I think. Plus, since this is home run (one line per faucet) it doesn't need the flow like other systems.1/2" sounds a little more normal. I wonder if doing 3/4" manifolds then dropping to 1/2" nearer to the faucets might not work too. That way you would have better volume delivery and the drop in size would ramp up the pressure near the faucet.
The only plus I see to them is a convenient way to shut off each fixture. And they look cool.I would never recommend a manifold pex system....its very wasteful
probably 3-4x the materials and if you run the water to a sink it does nothing to get hot water to the shower....your wasting all that water to run the hot to the shower every morning and letting that hot water sit in the sink pipe when it could have been used in the shower
I see no reason to do a manifold pex system...it just doesn't make sense...sure it looks nice
waste of time and money installing it
waste of time and money every day its in use
ive seen a few manifold pex system in parade of homes models, but in real life ive never seen one...people look to save money and time
agreedThe only plus I see to them is a convenient way to shut off each fixture. And they look cool.
Thanks for the advice! Nice 2002 by the way.It depends upon how the building lays out and where you are locating your water heater in relation to those loads. This is very important with any water heater, but especially tankless. Btw, Never call them instant. There is a story there that cost me a lot of dough, due to using inaccurate terminology. I don't have a problem with a manifold if everything is really close. I just built a new kitchen, two baths and laundry room here at the house. The longest hot line is 16' from the water heater and I manifolded almost the whole thing except the tub and master shower. Everything steps right along. The thing to be careful of with pex is the supply pressure. My old well pump set-up is 40-60#. Everything is fine at 50-60#. Not so good at 40-50#, which is driving me more nuts than she who must be obeyed. I had planned on a Constant Pressure well pump but will now definitely do so…soon.
You say you may use 1/4" or 3/8" pex. Personally, I can't imagine doing so. Check the "bushing" sizing of the fittings. I think 1/2" is 3/8, 3/4=9/16 and 1=13/16. That can create a problems for you flow wise.