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What is a heater core?

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A heater core is the part of your car that heats the interior. It receives hot engine water, and then dissipates it using a blower. It's like a computer radiator, but bigger, or like a car radiator, but smaller, for our purposes.
 
Yeah, basically it's a miniature radiator that dissipates heat from your watercooling loop. Although you didn't ask, I'd recommend a 1986 Chevette heatercore if you're looking into buying one.
 
A heater core is part of a car that you rarely see. It's hidden in the ductwork, and transfers heat from your coolant to the air that is blown into the car. IOW, it's your car's heater.

Some are made of Aluminum (ok, aluminium) and some of copper. As many here use copper water cooling components, the copper heater cores avoid the interactive corrosion that would happen if we used an aluminum heater core.
 
So... what is a heater core's use in a computer? It takes the heat and moves it outside of the PC? And Punk, are you saying that the only way to get a heater core is to take one from a car?
 
You can buy a new one. You might want to do a little research on watercooling, if you don't understand the point of a radiator (NOT being rude, just trying to help.) There should be a sticky that explains watercooling.
 
In a watercooling system, a pump circulates the water through the tubing. The water picks up the heat from the processor (and whatever else you're cooling) and moves along the loop to the heatercore. The heatercore dissipates the water's heat.

Watercooling is kinda like air cooling, except instead of dissipating the heat at the heatsink, it's moved elsewhere and dissipated at the heatercore.
 
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