A heat transfer system, comprising a module comprising a peripheral frame; an electrocaloric element disposed in an opening in the peripheral frame, said electrocaloric element comprising an electrocaloric film, a first electrode on a first side of the electrocaloric film, and a second electrode on a second side of the electrocaloric film; a first electrically conductive element electrically connected to the first electrode, said first electrically conductive element disposed adjacent to a first surface of the peripheral frame, said first surface extending from the electrocaloric film toward the peripheral frame perimeter; and a second electrically conductive element electrically connected to the second electrode, said second electrically conductive element disposed adjacent to a second surface of the peripheral frame, said second surface extending from the electrocaloric film toward the peripheral frame perimeter; a first connection to an electrical circuit, said first connection disposed along the peripheral frame perimeter proximate to the peripheral frame first surface, and electrically connecting the first electrically conductive element to the electrical circuit; a second connection to an electrical circuit, said second connection disposed along the peripheral frame perimeter proximate to the peripheral frame second surface, and electrically connecting the second electrically conductive element to the electrical circuit; and a working fluid flow path comprising an inlet, an outlet, and a flow path along at least one surface of the of the electrocaloric element; wherein the module further comprises a support extending parallel to the electrocaloric film in the peripheral frame opening; and characterized in that: the support is permeable to the working fluid. a module comprising a peripheral frame; an electrocaloric element disposed in an opening in the peripheral frame, said electrocaloric element comprising an electrocaloric film, a first electrode on a first side of the electrocaloric film, and a second electrode on a second side of the electrocaloric film; a first electrically conductive element electrically connected to the first electrode, said first electrically conductive element disposed adjacent to a first surface of the peripheral frame, said first surface extending from the electrocaloric film toward the peripheral frame perimeter; and a second electrically conductive element electrically connected to the second electrode, said second electrically conductive element disposed adjacent to a second surface of the peripheral frame, said second surface extending from the electrocaloric film toward the peripheral frame perimeter; a first connection to an electrical circuit, said first connection disposed along the peripheral frame perimeter proximate to the peripheral frame first surface, and electrically connecting the first electrically conductive element to the electrical circuit; a second connection to an electrical circuit, said second connection disposed along the peripheral frame perimeter proximate to the peripheral frame second surface, and electrically connecting the second electrically conductive element to the electrical circuit; and a working fluid flow path comprising an inlet, an outlet, and a flow path along at least one surface of the of the electrocaloric element; wherein the module further comprises a support extending parallel to the electrocaloric film in the peripheral frame opening; and characterized in that: the support is permeable to the working fluid.