A heater main point is lot like a small radiator. Coolant is circulated through it indigenous the water pump and also it has actually fins to boost the surface area and shed heat an ext efficiently. The heater main point is situated in the HVAC crate (which represents heating, ventilation, and air conditioning), which is generally located top top the firewall in the vehicle’s passenger compartment. In order come gain access to the heater main point the box commonly needs to it is in disassembled, which in many situations involves the complicated job of removing the dash. In many cases, it’s an all-day job, at least.

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Signs the a heater core needs replaced are:

Coolant loss, regularly from the HVAC drain approximately the firewall area.
The odor of coolant in the cabin, and sometimes greasy-feeling mist top top the reduced windshield from the defrost vents.No warmth from the vents, if the heater main point is blocked. To ascendancy out temperature mix door issues, i m sorry can reason the exact same problem, usually, the heater water tap temperatures space checked. If coolant is flowing through both hoses will certainly be the same temperature and hot.

Costs that Heater main point Replacement

On typical it costs about $800 to replace the heater main point in many vehicles.

For some much more specific approximates of the expense of heater core replacement, making use of $100 an hour as a labor rate and adding in the cost of a couple of gallons the coolant:


For a 2003 Honda civic with a 1.7-liter engine, the labor time to replace the heater core is 7.3 hours. A factory heater core costs about $341, or a UAC component costs about $65. This provides the job around $1081 using OE parts, or about $815 making use of aftermarket parts.

For A 2006 Ford blend with a 3.0-liter engine, the labor time to replace the heater main point is 5.6 hours. A manufacturing facility heater core costs about $169, or a Spectra Premium part costs around $67. This provides the job about $749 using OE parts, or around $647 utilizing aftermarket parts.

For a 2009 Nissan Frontier four-wheel drive, the labor time to change the heater core is 6.6 hours. A factory heater main point costs about $348, or a GPD component costs about $87. This provides the job around $1028 using manufacturing facility parts, or around $767 making use of aftermarket parts.


For a 2002 dodge Intrepid with a 2.7-liter engine, the job time to replace the heater main point is 5.8 hours. A factory heater core costs around $167, or a UAC part costs around $68. This makes the job around $767 using OE parts, or around $668 using aftermarket parts.

What walk Wrong v Heater Cores

The many common reason for replacement is a heater core leak. They space necessarily made out of thin metal to transmit heat most effectively, and also they deserve to be delicate. Vibrations or physical taking care of can cause a heater main point to crack and leak, or lock can additionally leak native corrosion. Their ar in the car is quite well safeguarded from outside corrosives, however if the liquid in the cooling device is aged or contaminated they have the right to corrode internally. The thinness the the metal can make the heater core the first thing come leak in that case.


Another factor to replace the heater core is if the core becomes plugged. In most situations a plugged heater core can be flushed. It only takes a small bit of obstruction to reduce coolant flow to the allude that the heater no work, and also the procedure then is typically to traction the heater hoses and also flush clean water through the core back and forth until it runs clean and also freely. The doesn’t constantly work though, and then replacement is the following step.

Clogs can happen since the fluid is old or contaminated, or periodically they have the right to be brought about by stop-leak products, which can clog little passages in the radiator and also heater core. An additional issue is that part different varieties of coolant are incompatible; as soon as mixed, part combinations can congeal come a thick gelatin that is very complicated to clear from well coolant passages. In the case, the heater core is one of the first parts affected, and it is generally replaced.


How can I stop heater main point problems?

The main way is to organization the coolant follow to the schedule in the owner’s manual, and also to make certain that nothing however the correct liquid is added to the cooling system. If water should be added most manufacturer’s recommend making use of distilled water fairly than insanity water.


Can i drive without heater core?

Yes, though that’s an ext or less a problem depending on the weather. The heater hoses have the right to be blocked off the isolate a leaking heater core. Yet there will be no warmth or defrost attributes in the automobile then.

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How lengthy does it take to change a heater core?

In most situations it’s close come an every day job, sometimes also involving disassembling and removing the dash.


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Daniel Rey
Daniel has worked for 33 years currently in the automotive field, as an ASE master Technician because that independent shops and dealerships, as a Certified Chrysler Technician, together a warranty claims adjuster for general Motors.