Heater Core

If the heat in your vehicle has stopped working at optimum efficiency or you have experienced catastrophic failure in the form of steam and hot water through your vent system, it is more than likely your heater core failing.

The heater core brings hot coolant into the cabin in a safe way to warm up the interior. If your interior isn't getting warm, the heater core may be too clogged to allow fluid to flow through adequately.