The performance ensures the distance how far the infrared waves can still be delivered in full. Because we all have different sensitivities, one should not exaggerate the intensity and try to choose the recommended distance between the IR emitter and the body.

Perfomance: Distance to: Recommended use:
350 watts     5 - 30 cm back and lower legs
500 watts   10 - 50 cm Especially good for the back
750 W.   40 - 90 cm Frontal or ceiling spotlight
1,300 Watts 80 - 130 cm Ideal as a ceiling spotlight