Infrared radiation (IR) is electromagnetic radiation of a wavelength longer than that of visible light. Infrared radiation can be used as a deliberate heating source. For example, it is used in infrared saunas to heat the occupants and also to remove ice from the wings of aircraft (de-icing).

Far Infrared Radiation is rapidly gaining popularity as a safe heat therapy method of natural health care & physiotherapy. Infrared can be used in cooking and heating food as it predominantly heats the opaque, absorbent objects, rather than the air around them. Efficiency is achieved by matching the wavelength of the infrared heater to the absorption characteristics of the material or human body.