Last summer, several HVAC condensing units iced up frequently during the night. This caused a loss of cooling air. In the morning, as the temperature began to rise, the air conditioning was inoperable due to thick ice. As a temporary fix, techs melted the ice away each morning with electric heat guns and gas torches. The units are a bit old, but your HVAC contractor's test reports show they meet spec and are mechanically sound. Based on this, your plant manager says the only logical ...

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