NOVELTY - Composition (I) comprises: a compound A comprising (E)-pentafluoropropene (HFC-1225ye) and/or (Z)-HFC-1225ye in a molar ratio of 2.5:1-1:2.5; and at least one compound D comprising e.g. 1,3,3,3-tetrafluoropropene, 2,3,3,3-tetrafluoropropene, 1,2,3,3-tetrafluoropropene, 3,3,3-trifluoropropene, difluoromethane, pentafluoroethane, perfluoro-methylvinyl ether, propane, n-butane, isobutane, 2-methylbutane, n-pentane, cyclopentane, dimethyl ether, bis-(trifluoromethyl)-sulfide, carbon dioxide or trifluoromethyl iodide.    USE - (I) is useful: for mobile air-cooling; and in refrigerants (claimed). (I) is useful as solvents, blowing agents, fire extinguishants, organic rankine cycle liquids, heat transformer liquids, heat pipe liquids or aerosol-producing gases.    ADVANTAGE - (I) has a global warming potential of less than 150, preferably less than 120, and is non-flammable (claimed). (I) has low toxicity.    DETAILED DESCRIPTION - Composition (I) comprises: a compound A comprising (E)-pentafluoropropene (HFC-1225ye) and/or (Z)-HFC-1225ye in a molar ratio of 2.5:1-1:2.5; and at least one compound D comprising 1,3,3,3-tetrafluoropropene (HFC-1234ze), 2,3,3,3-tetrafluoropropene (HFC-1234yf), 1,2,3,3-tetrafluoropropene (HFC-1234ye), 3,3,3-trifluoropropene (HFC-1243zf), difluoromethane (HFC- 32), pentafluoroethane (HFC-125), 1,1,2,2-tetrafluoroethane (HFC-134), 1,1,1,2-tetrafluoroethane (HFC-134a), 1,1,1-trifluoroethane (HFC-143a), 1,1-difluoroethane (HFC-152a), fluoroethane (HFC-161), 1,1,1,2,3,3,3-heptafluoropropane (HFC-227ea), 1,1,1,2,3,3-hexafluoropropane (HFC-236ea), 1,1,1,3,3,3-hexafluoropropane (HFC-236fa), 1,1,1,3,3-pentafluoropropane (HFC-245fa), 1,1,1,3,3-pentafluorobutane (HFC-365mfc), perfluoro-methylvinyl ether, propane, n-butane, isobutane, 2-methylbutane, n-pentane, cyclopentane, dimethyl ether, bis-(trifluoromethyl)-sulfide, carbon dioxide or trifluoromethyl iodide. INDEPENDENT CLAIMS are included for:    (1) a method for heating or cooling, comprising applying the composition or refrigerant; and    (2) a refrigerant comprising (I) and refrigerant additives.