Infrared heaters and heat panels generate so-called radiant heat, which arises when the device is connected to electricity. A shortwave bath heater, IR-A for short, generates instant heat that acts directly on the body or objects without heating up the circulation air. Bath heaters with medium wave, short: IR-B, on the other hand radiate heat to the circulating air, so that the room temperature in the bathroom increases slightly after a short lead time. BURDA infared heat panels with mirrored glass surfaces are so-called long wave heaters with IR-C radiation. Here, a large part of the generated heat is released to the circulating air, so that convection heat immerses the bath in gentle warmth.