An electric resistance radiant furnace that includes multiple panel emitters and at least one layer of metallic screen located between the panel emitters. In some embodiments, the panel emitters each include a ceramic body with an electric resistance wire embedded therein. Furnaces can be for heating an occupied space within a building and can also include a blower and controls and heat produced by electricity passing through the wire can be conducted through the ceramic body of each panel emitter and at least part of the heat can be radiated from the ceramic body to the metallic screen and then be transferred to air blown by the blower between the panel emitters and along the metallic screen. Concave or convex surfaces of curved layers of metallic screen can face opposite directions, can face the panel emitters, or both.