This 1-2 Person model offers 7 Low EMF infrared Carbon Energy Efficient heating panels that produce a wider, softer heat that is evenly distributed throughout the sauna. Our Low EMF FAR infrared Carbon Energy Efficient heating panel heaters are 30% larger than saunas heated by ceramic tubes and penetrate skin 40% more to maximize therapeutic benefits. Unlike ceramic heaters, you will never have to replace our Carbon Energy Efficient heating panels. Unlike traditional rock and water saunas (which heat at or over 200F and do not penetrate your skin), Golden Designs Saunas operate at a much lower and safer 130F. In fact, Golden Designs Saunas operate most effectively at 120F.