Heater Core Replacement

Heater Core Replacement

The heater core is a part of every car’s cooling system which looks and works much like a radiator. Through its fins and tubes, the heater core spreads the heat from your car’s cooling system into the air from the blower which is then used to provide warmth in your car’s cabin. Over time your heater core can deteriorate or become damaged and you will need a heater core replacement for your vehicle.

How does a heater core work?

The car’s engine system runs a cooling system which helps it to stay within a certain temperature range. When the coolant is run through the engine by the water pumps, it needs to disperse the heat accumulated to keep cooling your engine, and this is where your heater core plays a significant role.

The heater core has tubes and fins where the coolant is forced through to dissipate as much heat as possible. The heat is taken up by air coming from the blower and thrust into your car’s cabin to keep it warm. The heater core is also connected to the car’s air conditioning system where it works together with the evaporator coil to remove any moisture from the air keeping your car’s air conditions at optimum.

Where is the Heater Core Located?

The common location of the heater core is in the dashboard behind several components on the passenger seat side. In some automobiles, it’s easily reached from under the hood, but in most cases, you have to remove the dashboard and several other components before reaching it which makes it very labor intensive.

What are the common problems faced by the heater core?


The tubes carrying the coolant through the heater core tend to get clogged by the old coolant after a while. When this happens very little to no heat is produced into the car’s cabin. As a preventative measure, it’s recommended that you periodically flush the coolant to prevent the formation of any clogs


A leak from the heater core or the car’s cooling system can be easily noticed when the car starts blowing in cold air, the smell of the coolant or by the formation of wet patches on the passenger’s carpet. Keep on mind that the coolant is toxic and should not be inhaled as it can lead to health problems.

Rand Auto Scan Heater Core Replacement

When your heater core is not working, always get your car checked out by a certified auto technician to diagnose and fix the problem as soon as possible. The heater core can be simply fixed, or your vehicle may undergo a full heater core replacement.

Do not try to fix it because the repair involves a lot of delicate steps and you may cause more severe damages without the required knowledge and tools to repair. When a heater core needs to be replaced this can involve a full dash removal. Rand Auto Scan is only one of few in Randburg that can handle a full dash removal procedure effectively, timely and professionally at a fair price.

To request a quote for all heater core repair needs, simply fill out the quote form on this page or to request an appointment head to our contact us page.

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