The present invention provides a mixed refrigerant having (1) a superior cooling COP compared to R410A, which is an existing alternative refrigerant to R22, and (2) an equal or superior refrigerating effect in comparison with R22, even under conditions of use in which the condensation temperature setting is high, such as at a high outside air temperature. The present invention pertains to a composition containing refrigerants, the refrigerant containing HFC-32, HFC-125, and HFC-134a, the mass ratio of the three components being, in a ternary composition diagram having the three components as respective apexes, in the range of a triangle having the following three points as apexes:;point A (HFC32/HFC125/HFC134a=36/25/39 mass %);point B (HFC32/HFC125/HFC134a=36/31/33 mass %); andpoint C (HFC32/HFC125/HFC134a=43/34/23 mass %).
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