MOKENA, ILL. — Manufacturers of hydronic heating and cooling equipment for the commercial market see a usurper taking market share away from them and they have decided to fight back. Their opponents are manufacturers of variable refrigerant flow air conditioning and heat pumps who, the hydronic manufacturers contend, are appealing directly to building owners by glossing over some important facts. Members of the Hydronics Industry Alliance — Commercial firmed up their marketing ...

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