HVAC's "heating" part ... cool air through the cabin vents. Finally, the low-pressure refrigerant gas returns to the compressor, and the cycle repeats. Yes, car air conditioning can reduce fuel ...

Few things are as welcoming as a car’s AC on a steamy summer day ... that comes from the evaporator inside your heating and cooling system,” says Jake Fisher, Consumer Reports’ senior ...

Is there a funky smell in your car ... your heating and cooling system. With the engine on and the interior fan running, spray plenty of cleaner on both sides of the plenum intake vent, and ...