High Voltage Electric Heating (HVH or HVCH) is the ideal heating system for plug-in hybrid vehicles (PHEVs) and battery electric vehicles (BEVs). It converts DC electrical energy into heat with virtually no loss. Powerful as its namesake, this high-voltage heater is specialized for electric vehicles. By converting the battery’s electrical energy with DC voltage, ranging from 300 to 750 V, into abundant heat, this device provides efficient, emission-free heating throughout the vehicle’s interior.