We present new measurements of the vapor pressures of difluoromethane (R32) from 235 to 265 K, of 1-chloro-1,2,2,2-tetrafluoroethane (R124) from 220 to 286 K, and of pentafluoroethane (R125) from 218 to 286 K. Measurements were made in two ebulliometers, one of glass and one of metal. Overall, pressures ranged from 13 to about 950 kPa. We also present vapor pressures of R125, calculated via thermodynamic relationships, for temperatures down to 170 K (2.3 kPa). We study the azeotropic mixture of R125 with chloropentafluoroethane (R115), and we correct our data for a small R115 impurity.