Heater Service: A Year-Round Opportunity – UnderhoodService
Connect with us
Close Sidebar Panel Open Sidebar Panel


Heater Service: A Year-Round Opportunity


Nothing is more annoying than a heater that blows cold air – except maybe one that leaks. So if you’re dealing with a heater problem, be it a leaker or one that doesn’t seem to put out much warmth, keep reading because this article can help you solve your heater blues.


Before we get into troubleshooting heater problems, let’s talk about the heater itself. The heater core is like a mini-radiator. It has inlet and outlet pipes and a finned copper or aluminum core through which hot coolant from the engine circulates. The heater core is located inside the HVAC plenum under the dash and usually on the passenger’s side of the box.

When hot coolant from the engine flows through the heater core, the core gets hot and heats the air that’s forced through it by the blower motor. Generally speaking, a heater should put out air that’s at least 70

Click to comment