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What is the antifreeze solution used in slab heating? - Page 2

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Posted by Ecnerwal on November 12, 2006, 12:42 am

I first saw the stuff when I lived in NYS, IIRC, at most of the usual
stores (wal-mart, sears, etc). Prestone had a version (De-Icer), then
several copycat versions came out. Much ado about better deicing, a
distinctive yellow-green colorr, and an ingredient that surprised the
heck out of me (as well as the usual Methyl). I haven't really looked to
see if it's still on the market, but if you see windshield wash that's
yellow-green, you're probably looking at it.

Appears to be still on the market, except perhaps in "TX, and selected
counties in CA, AZ and GA" based on a quick web search.

Follow the link below and then go to windshield washer fluids (the whole
link to the precise description would wrap...), the description page
mentions "a high concentration of methanol...and the addition of
ethylene glycol..." - so they are still selling the stuff to
deliberately dump on the road via your windshield washer. I couldn't
understand it then, and I still don't.


Cats, coffee, chocolate...vices to live by

Posted by daestrom on November 13, 2006, 9:44 pm

Ugh.  I'm not a super-enviro sort of guy, but that's just too stupid for
even me.

Kind of like the local law that allows homeowners to take their lawn debris
(clippings / leaves / small branches) to the curb for pickup by the city to
take to the landfill.  But the DPW (Department of Public Works) require that
it be placed in *PLASTIC BAGS* for ease of collection!!!!  Dumb, dumber,


Posted by Jack on December 24, 2006, 4:23 pm
 think Propylene Glycol (non-toxic) as opposed to Ethylene Glycol (toxic)

Posted by SJC on December 24, 2006, 8:57 pm
 "For the purposes of radiant heat, either Propylene Glycol (non-toxic) or
Ethylene Glycol (automotive/toxic).
Most commonly used with heat exchangers for freeze protection or snowmelt


Posted by ChelseaDog on November 28, 2006, 3:52 am
 I've used Walmart RV antifreeze for the past four years in my closed
loop water heating system with no problems.  I live in Colorado.  I
was skeptical at first and put a small amount in the freezer and it
never went from a liquid state. I flush the system out every couple of
years (13 gallons).


On Fri, 10 Nov 2006 13:49:41 -0600, "Steve Barker LT"

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