AIR CONDITIONER

摘要

When using at least one of heat exchangers 25 related to heat medium that exchange heat between a heat source side refrigerant and a heat medium as an evaporator, in a case where an air-conditioning apparatus 100 has detected, in the heat exchanger 25 related to heat medium that functions as the evaporator, an evaporating temperature of the heat source side refrigerant which causes the temperature of the heat medium passing through this heat exchanger 25 related to heat medium to become equal to or lower than a freezing temperature, the air-conditioning apparatus 100 performs a heat medium anti-freezing operation by blocking entry of the heat source side refrigerant into the heat exchanger 25 related to heat medium that functions as the evaporator, and causing the heat source side refrigerant to flow to a bypass pipe 20.