It is heated by PTC heater high efficiency of conversion between electricity and heat rapid heating.
Portable Air Cooler Fan & Heater Humidifier with Washable Filter Remote Control The indoor portable evaporative air cooler and heater is multifunctional. Portable Air Cooler Fan & Heater Humidifier with Washable Filter Remote Control White Its non-compressor system cools naturally efficiently and inexpensively without power-hungry components. It can also be used as a air purifier because of its anion generator. It distributes cool air through the honeycomb cooling media while the dust filter cleanses the air.