Havells OFR - 11Fin 2900-Watt PTC Fan Heater (Black) Havells heater features a PTC Ceramic heating element which provides faster, safer and energy efficient heating. Moreover, its oscillation function helps in delivering multi directional heating. For safety reasons, it’s made in a way that if the PTC fan heater falls/tips over accidentally then it switches off automatically. Havells PTC fan heater comes with a dust filter that prevents dust from entering the product and can be cleaned from time to time. It also ensures overheat protection as it switches off automatically if the heater is overheated. Its plastic body remains cool during the functioning, to avoid any mishaps.