Is under floor heating cheaper to run than radiators?
Yes. Radiant energy emitted by the floor is partly reflected by each surface and partly absorbed. Where it is absorbed, that surface becomes a secondary emitter. After a while, all surfaces become secondary emitters. Furnishings themselves radiate energy and the room becomes evenly and uniformly warmed. The energy reaches into every corner of the room – no cold spot, no hot ceilings and no cold feet. Because you feel, and you extremities (feet) feel so much warmer you actually run the system at a lower temperature. This is save about 10% energy. If you then connect it to a new dual temperature under floor heating condensing boilers or a heat pump then your savings will be even greater.
