An evaporator for an air conditioning system, comprising: a first manifold; a second manifold spaced from and substantially parallel with said first manifold; a plurality of refrigerant tubes hydraulically connecting said first and second manifolds (108, 110) for a refrigerant flow therebetween, wherein said plurality of refrigerant tubes includes an upper region and a lower region with respect to gravity; and a first phase change material (pcm) housing configured to contain a phase change material such that the phase change material is in thermal contact with at least one of said plurality of refrigerant tubes, wherein the only portion of said at least one of said plurality of refrigerant tubes that the phase change material is in thermal contact with is the upper region, the evaporator further comprising a second pcm housing configured to contain a phase change material such that the phase change material is in thermal contact with said at least one of said plurality of refrigerant tubes, wherein the only portion of said at least one of said plurality of refrigerant tubes that the phase change material is in thermal contact with is the upper region and wherein said first pcm housing is in hydraulic communication with said second pcm housing for hydraulic communication of phase change material there between and, wherein said at least one of refrigerant tubes includes two opposing flat surfaces, and wherein each of said pcm housings is in thermal contact with said opposing flat surfaces, respectively, characterized in that, said at least one of refrigerant tubes is a flat refrigerant tube having a through-hole between said opposing flat surfaces, wherein said first and second pcm housings include a pcm port,wherein said through-hole of said at least one of flat refrigerant tubes cooperation with said pcm ports of said pcm housings to define a pcm passageway hydraulically interconnecting said pcm housings and, in that said pcm housing contains a heat conductive material and said heat conductive material includes metallic particles or fibers. a first manifold; a second manifold spaced from and substantially parallel with said first manifold; a plurality of refrigerant tubes hydraulically connecting said first and second manifolds (108, 110) for a refrigerant flow therebetween, wherein said plurality of refrigerant tubes includes an upper region and a lower region with respect to gravity; and a first phase change material (pcm) housing configured to contain a phase change material such that the phase change material is in thermal contact with at least one of said plurality of refrigerant tubes, wherein the only portion of said at least one of said plurality of refrigerant tubes that the phase change material is in thermal contact with is the upper region, the evaporator further comprising a second pcm housing configured to contain a phase change material such that the phase change material is in thermal contact with said at least one of said plurality of refrigerant tubes, wherein the only portion of said at least one of said plurality of refrigerant tubes that the phase change material is in thermal contact with is the upper region and wherein said first pcm housing is in hydraulic communication with said second pcm housing for hydraulic communication of phase change material there between and, wherein said at least one of refrigerant tubes includes two opposing flat surfaces, and wherein each of said pcm housings is in thermal contact with said opposing flat surfaces, respectively, characterized in that, said at least one of refrigerant tubes is a flat refrigerant tube having a through-hole between said opposing flat surfaces, wherein said first and second pcm housings include a pcm port,wherein said through-hole of said at least one of flat refrigerant tubes cooperation with said pcm ports of said pcm housings to define a pcm passageway hydraulically interconnecting said pcm housings and, in that said pcm housing contains a heat conductive material and said heat conductive material includes metallic particles or fibers.