View Single Post
Old 02-15-13, 06:01 AM   #16
Mikesolar
Master EcoRenovator
 
Mikesolar's Avatar
 
Join Date: Aug 2012
Location: Toronto
Posts: 958
Thanks: 40
Thanked 158 Times in 150 Posts
Default

Why not propylene glycol? Ethylene is way too deadly and is losing market share to propylene and if it is USP grade, a single wall HX is OK in most places. Not so with ethylene, double wall is needed.

I'd be very interested in the results.
Mikesolar is offline   Reply With Quote