May 27, 2022 · Bestseller No. 10. VEVOR Diesel Air Heater 8KW, All in One 12V Truck Heater, Parking Heater with Black LCD, Remote Control, Fast Heating Diesel Heater for RV Truck, Boat, Bus, Car Trailer, Motorhomes. All-in-one Diesel Heater: Heater Power: 8KW; Rated Voltage: 12V; Working Temperature: -40 °C - +80 °C / 40 - 176 ℉.