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Old 02-19-10, 07:54 PM   #4
Heynow999
Lurking Renovator
 
Join Date: Feb 2010
Location: Toronto
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I have compared the two different types of heat exchangers, external flat plate VS internal coil. I know that on my system they glycol will only drop about 4C after it goes through the heat exchanger. I have two thermometers on the pump station. A friend of mine has an external heat exchanger and he sees a huge drop in temperature when the glcoy goes through it. I don't remember any numbers and I know this is not scientific evidence but I remember being really surprised when he told me the numbers

The other thing I would do different next time is I would make a drainback system so I could use water as a heat transfer fluid. Water is better (and cheaper!) than glycol. I am tired of wiping glycol off the wall.

Last edited by Heynow999; 02-20-10 at 07:02 AM..
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