Infrared warms the building fabric not the air, resulting in less energy being wasted through draughts. This means that your room will reach a higher ambient temperature with infrared than it will with a convection heater of the same wattage.
Solids lose their heat more slowly than air, so less heat is required to maintain thermal comfort. As a result you need around 30% less wattage than you would with a traditional convector heater such as a radiator or storage heater.
Thermostats can be set at least 2 degrees lower than with convection systems without compromising the comfort level. For every degree less you save 6% energy so for a 2 degree reduction you will save a minimum of 12%. It is also likely the infrared system will be required to run for less time. In addition, almost 100% of input electrical energy is converted to infrared and therefore heat.
The amount saved will depend on the structure of the house or building and your previous heating solution. However, it has been proven that a sufficiently insulated building fitted with infrared panels, can expect significant reductions in energy usage, including:
up to 30% reduction on gas central heating systems;
up to 50% reduction on oil central heating systems;
up to 60% reduction on electrical storage heating.