There is a lot of confusion as to the extent of the energy saving abilities of underfloor heating (also called radiant floor heating). Results from various studies put the energy consumption of radiant floor heating anywhere between 52% less and 10% more than conventional heating systems. The confusion is caused by the extent of the reduction in ambient air temperature.

With radiant heating systems, approximately half the energy is emitted into the room as low temperature radiant heat. This process is very efficient as it provides a lower ambient air temperature allowing you to feel warmer at a lower temperature because the radiant heat is lowering the heat loss from your body.

Energy savings vary depending on the insulation, usage patterns and personal requirements of the occupants. Other factors to bear in mind include the cost of the power source.

The many variables make it impossible to provide a reliable rule of thumb. As a general principle with Warmup a 10-15% energy saving should be possible using insulated undertile heating when compared to conventional electric heating.