HEATER CORE: The Most Expensive Little Part in Your Car!

It's called a heater core-but there's nothing "little" about the job of replacing one.

As we continue our Cooling System Revival, we're getting right into the core of things: the heater core.

What exactly is a heater core? What does it look like? Where is it hiding? How does it work? And why can something that looks like a tiny radiator turn into a major repair bill?

The heater core is part of your vehicle's cooling system, using hot engine coolant to provide heat inside the passenger compartment. But when it becomes restricted with rust, sludge or deposits, you may lose heat - or lose coolant altogether.

And here's the ugly part: getting to the heater core.

On many vehicles' the heater box is buried deep behind the dashboard. The car may have been assembled around that heater box, meaning access can involve removing the seats, centre console, carpet, dashboard and a whole lot of hardware just to reach the part.

I share the story of a Dodge Spirit that needed a heater core replacement. The job took nearly eight hours - I explain why I told the owner not to come looking over my shoulder while I was doing it. Some jobs require absolute focus!

And if you think eight hours of labour sounds expensive, wait until you multiply that by today's shop rates. You might want to check your underwear drawer before you hear the final number.😂

We'll also talk about why attempting to flush a badly plugged heater core isn't always successful, and why sometimes replacement is the only real solution.

Another nugget in the Cooling System Revival, because knowing how your cooling system works before it fails can save you some serious money.

#CoolingSystemRevival #HeaterCore #CarMaintenance

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