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Don’t rely absolutely on the boiler water treatment to take care of the evap condenser. “Boiler treatment people don’t understand the condenser,” said one tech. “They push for a softener.” But if ...

Any time the evaporator coil sees reduced airflow across its face or a frosted coil, there will be a reduced heat load on the coil. No or low airflow, or frost, will cause the refrigerant in the coil ...