What is underfloor heating?

Traditional wall-mounted radiator heating systems that are
found in most homes convect heat into the room, sending
heat towards the ceiling in a circular cycle. In contrast,
underfloor heating consists of electric elements, or water pipes,
that radiate heat up evenly throughout the whole room. For
optimum efficiency, a thermostat in each room can monitor and
control the temperature.
Underfloor heating is also unobtrusive and easier to maintain
as the elements, or pipework, can be embedded in concrete floors
when houses are constructed, or they can be fitted under existing
flooring. A saving of 20 per cent can be made on fuel bills, and for
buildings with high ceilings, savings can reach as high as 40 per
cent compared with traditional heating systems.