What is the difference between heating from radiators and underfloor heating?
Radiators mainly work on the principle of heat convection, not radiation. Air is heated to a high temperature in the range of 65-75ºC and needs to be moved from the radiator to the rest of the room.
This is achieved using thermal currents of hot air moving to the ceiling, cooling, and falling to create an air cycle.
Underfloor radiant heating (electric or hydronic) systems use considerably less energy than radiator systems, heating objects first rather than air.