Glycol is not added to deal with ambient temp around the unit. Glycol is added to prevent the freezing of the unit itself. The glycol goes through a heat exchanger inside the chiller, on the other side of the exchanger is refrigerant. If the mix is not correct the glycol mix freezes inside the heat exchanger, which will damager your compressor and pump(s). The money is worth it, the compressors used in chillers are some of the most expensive on the market.
Last edited by BrewinLou; 07-31-2012 at 12:49 PM.
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