Gas-fired low-intensity infrared heating equipment has demonstrated operating efficiencies resulting in energy savings of 30% to 50% or more (Buckley and Seel 1986; New York Ad Hoc Committee 1973), which support application of an adjustment factor to standard heat loss calculations. This adjustment factor reduces the calculated heat input requirement for a given space when compared to standard procedures. The objective of this paper is to demonstrate that this is supportable with the application of basic engineering principles. The areas studied are:

 -Radiant energy heats solid objects and the floor, not the air.

 -The floor temperature is elevated proportional to the radiant intensity.

 -With radiant heat, normal comfort levels are provided at a lower ambient temperature.

 -There is less heat stratification with radiant heating.

Units: I-P