The experimental pressure-volume-temperature-composition (PVTx) properties of a binary refrigerant, a system of difluoromethane (R-32)+pentafluoroethane (R-125), R-32+125, and a ternary refrigerant, a system of R-32, R-125, and 1,1,1,2-tetrafluoroethane (R-134a), R-32+125+134a, have been measured by a constant-volume method coupled with expansion procedures in an extensive range of temperatures, pressures, and densities. Ninety-four PVTx property data of the R-32+125 system were measured in a range of temperatures from (330 to 440) K, of pressures from (1.8 to 5.2) MPa, and of densities from (67 to 158) kg . m(-3), of the compositions of 20.089 and 39.977 mass % R-32. One hundred and five PVTx property data of the R-32+125+134a system were measured in a range of temperatures from (315 to 440) K, of pressures from (1.6 to 5.7) MPa, and of densities from (67 to 166) kg . m(-3), at compositions of (22.993/25.026/51.981), (23.075/25.112/51.813), (30.018/10.059/59.924), (29.996/29.971/40.033), (33.408/33.257/33.335) mass %.