Which performance reduction occurs when an HVAC evaporator coil ices over completely?

💡 Explanation

When an evaporator coil ices over, thermal insulation reduces heat transfer because the ice acts against conductive heat flow, limiting the ability of the refrigerant to absorb latent heat during phase change. Therefore, heat absorption decreases due to insulation rather than alternative processes driven by changes such as refrigerant flow or pressure.

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