Re: [Phys-l] Copper and aluminum

[brian whatcott <betwys1@sbcglobal.net>]

On 12/14/2010 11:02 AM, Bernard Cleyet wrote:
> /snip/

> When you're inclined, replace the iron pipe w/ PEX and use 
> "noodles".As suggested, tape the ends together and the ends.
> brian whatcott wrote:
>
> > The "unless" involves either a return flow pipe  or an 'instantaneous'
> > heater. The return pipe need only be narrow gauge, but still it wastes
> > energy if it flows hot water  to waste.
>
> As I've posted, Costco sells (sold) a pump and relief valve so water will circulate w/o the need for a extra return pipe.  It includes a 24 hr. timer.
>
>
> bc

I think Josh's system uses copper.
Here's what one happy Costco customer said about returning chilled hot 
water via the cold water supply:

Rating:
4 out of 5
4 out of 5
Andy1
Location: granada hills,CA
Date: November 22, 2008


   great product

"i installed this product by myself, its very simple if you know what 
you're doing, in no time it started working instantly hot water gets to 
my kitchen and master bathroom in no time, the only thing is my gas bill 
doubled in the first 2 weeks and cold water line is not cold anymore its 
warm but i really think its worth paying more for gas."

You can see a positive side-effect of this method: the cold water supply 
gets heated - that stops freeze-ups in exposed situations.

Brian W