The heater core is a small radiator that warms the car’s cabin using hot coolant from the engine. The cooling system’s hoses circulate liquid coolant through the heater core as they do through ...

As winter sets in and temperatures drop, a functioning heater becomes a necessity. But what if, instead of warm comfort, your heater blows icy air through the vents, or fails to work altogether?

Air passing over the heater core warms up your car on frigid mornings. Conversely, air going through the AC evaporator coil on blazing summer days cools down your vehicle’s interior. ASE Master ...