A radiant heat panel system comprising multiple radiant heat transfer panels (16), each of the panels having a thermal mass (18) and a conduit channel (20); a fluid conduit (21), the conduit communicating with an apparatus (23) for heating fluid (22) in the conduit; the multiple panels positioned adjacent each other such that the conduit extends through a series of the conduit channels; the panels, conduit and apparatus so configured and arranged to permit heat transfer from the fluid to the thermal mass of the panel, whereby heat radiates from the panel.