Heliosa 99 Double Infrared Wall-Mounted Heater with Waterproof DesignHeated area about 40 45 square meters. Highest heat efficiency and maximum heated area thanks to the special reflectors patented by Star Progetti. These special patented reflectors cover a larger heated area more efficiently and by allowing more efficient space heating. Heliosa has no combustion and therefore does not produce direct CO2. Its heart is a bulb, it turns on and off, realizing the maximum heat immediately Heliosa produces a healthy heat