To replace a heater core, you should plan on spending anywhere between $500 to $1000. Yes, it will prove to be an expensive fix. Usually, most of the invoice amount would go towards the labor charges. The location of the heater core makes it quite difficult to work on it.How do you fix a leaking heater core?
If replacing your heater core with a new unit is not an option, repairing it may be possible. This process typically involves boiling the core in a large tank for several hours, passing a rod through the tubes to clear them of blockage, and then soldering the tubes wherever a heater core leak has developed.Where is the heater core located?
A heater core is a small radiator located under the dashboard of the vehicle, and it consists of conductive aluminium or brass tubing with cooling fins to increase surface area.