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Posted by Harold Kestenholz - Hydronic Network on November 24th, 2001 08:41 PM
In reply to radient floor heat/antifreeze by Cathy on November 24th, 2001 08:23 PM [Go to top of thread]

1 of 1 people found this post helpful

RV antifreeze is similar to the antifreeze for boiler systems in that it is propylene glycol, a non-toxic antifreeze used to sweeten some sodas. RV antifreeze is meant to be used for a season, then discarded.

A plumbing/heating supplier sells an antifreeze made for boiler systems that has water treatment chemicals included to prevent corrosion and may be in a well-sealed system for decades.

Automobile antifreeze, ethylene glycol, is toxic and may contain silicone which jels and messes up pumps in hot water systems.

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