An air heater includes a bell housing semi-attached to an exhaust fume output manifold of an engine of a vehicle for collecting hot air, preferably during starting, linked by an air hose to a small turbine or an extractor which forces air into vehicle's compartment, to front and rear screens or to exterior rear view mirrors by way of a suitable pipe or several of these; a thermostat for shutting off the air heater and opening up or turning on the vehicle's conventional heater by means of a manual or electrically-operated butterfly valve, shutting off the turbine. It includes a bell housing semi-attached to the exhaust fume output manifold of an engine of a vehicle for collecting hot air, preferably during starting, linked by an air hose to a small turbine or an extractor which forces air into the vehicle's compartment.