Sunster 12V 24V 8KW Air Diesel Heater bluetooth Night Parking Upgrade LCD For RV

Ventilation mode: The device includes a ventilation feature, which allows air to circulate without using the heating function. Whether at high altitude or in cold temperatures, this portable diesel heater campers will provide you with constant warmth, preheat your vehicle, keep the interior warm, preheat the engine, and prevent windows from freezing.

eBay