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wrote:
Harry K wrote:

wrote:

wrote:

...a well sealed insulation jacket will not allow
moisture to fomr on the pipe.

And it may increase the water heating bill.

Not in any measurable way...

I disagree.

Nick

Care to expound on why? The amount of water contained in a 3/4" pipe
say 20 ft long is not very much. About 5 cu in/ft (after heavy
rounding off) unless my long ago math is out of whack. Water in the
cold intake pipe also doesn't usually sit there long enough to pick up
much ambient heat.

Harry K