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Blog  -  Cooling System

Heater Core

picture of heater core auto repair in BedfordYou may be wondering where the air in your passenger compartment comes from.

Well, as your engine starts to warm up, it also warms the coolant/antifreeze that circulates around the engine and through the radiator. There is also a hose that moves coolant/antifreeze from the engine to the heater core and another that takes it back into the engine. The heater core looks like a little radiator and lives in the air blend box behind the dashboard.

When you turn on the heat, air blows over the heater core, is warmed, and comes into the cabin. Some vehicles have a heater valve that moves coolant through the heater core when the heat is on and bypasses the heater core when the heat is off. In other vehicles, the temperature of the air is controlled within the air blend box by how much air is directed over the heater core.

The engine cooling system, in a larger sense, also encompasses the heater core. Things that adversely affect, say, your radiator will also harm your heater core. The coolant/antifreeze contains corrosion inhibitors that coat the surfaces inside the cooling system, including the heater core. When the corrosion inhibitors are depleted, the cooling system can become corroded, filled with contaminants, and may even start to leak.

There are several signs that warn of a leaky heater core:

  • First you may a sweet smell from your vents. This is coolant leaking out and getting into the air.

  • You may see vapor coming out the vents and notice a film building up inside the windows. Of course, breathing coolant vapors is bad for you.

  • You may also see coolant on the driveway. 

  • Depending on the design of your vehicle, you may even get coolant leaking out into the foot wells of the cabin.

Coolant/antifreeze leaking out through the heater core means that the overall coolant level in the system will be low and the engine is in danger of overheating – which is a cause of mechanical breakdown.

The good news is that the things you do to protect your cooling system also protect your heater core. Changing your coolant/antifreeze as directed by your owners manual or upon the  recommendation of your Town Hill Auto Sales and Service advisor will help ensure your coolant has enough corrosion inhibitors working to protect this system. Also, quickly repairing any leaks and inspecting hoses for signs of internal breakdown will help keep any problem from becoming an emergency.

Make sure you with your friendly and knowledgeable Town Hill Auto Sales and Service service advisor about when a cooling system service should be serviced.

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pic of townhill service center - heater core auto repair in Bedford     

warranty for heater core auto repair in BedfordDid you know that all of the service professionals at Townhill Auto service in Bedford are ASE Master certified mechanics? These dealer trained technicians really know their cars. Certified in all makes and models these professionals can easily diagnose and repair anything; from the smallest leak to a major repair. Back that with being a Napa Certified Service Center you can have peace in mind that every repair uses the highest quality parts with industry-leading warranties.

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