The wavelength of 2 to 10 microns emitted by the HT-200 is absorbed by the paint. As a result, the paint emits hot air and then the warm air rises to the roof of the enclosure oven. The hot air is then captured and passed through a fan that redistributes it in the furnace providing free energy that is then recovered. The infrared and hot air mix offers the best of both worlds, plus it vents a little hot air outside the building according to CSA B149.15.