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Final answer:An air-conditioning system with a high-side restriction will operate with a lower coefficient of performance (COP) than a heat pump. The COPref for air conditioners and refrigerators typically ranges from 2 to 6, which is better than the COPhp values for heat pumps.Explanation:An air-conditioning system with a high-side restriction will operate with a lower coefficient of performance (COP) than a heat pump. The COPref for air conditioners and refrigerators typically ranges from 2 to 6, which is better than the COPhp values for heat pumps. The smaller the temperature difference, the smaller the efficiency and the greater the COPhp....