Antifreeze is one word that hydronic system owners should understand. For the hydronic HVAC contractor, this antifreeze is more accurately described as the heat transfer fluid necessary for the proper ...
ST. LOUIS — Nu-Calgon has added two new formulations to its line of Freez-Kontr’l propylene glycols. Freez-Kontr’l HD is a heavy-duty heat transfer fluid designed to work at a higher operating ...
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