The infrared spectrum consists of near (NIR), mid (MIR), and far (FIR) waves, each with distinct characteristics and frequency ranges. It’s impossible to deliver these three peak wavelengths at one time from a single source. Our saunas provide a unique technology that combines three heating elements in one sauna heater. Solocarbon 3-in-1 heaters combine three distinct components within a single heating panel to provide near, mid and far-infrared at their peak wavelengths.