Why does my car only blow hot air while I'm driving?

Only the heat in my car works while I’m driving and I’m not sure why. Is this an easy fix, or will I need to ask a mechanic about it? I would rather avoid repair bills if I can.

Liz Jenson · Updated on
Reviewed by Shannon Martin, Licensed Insurance Agent.
I’m sorry to hear that you’re having car troubles! When a car is only able to blow hot air while you’re driving, the most common culprit is a low coolant level. The simplest fix for this is – as you might have guessed–
adding coolant
to your car.
However, it’s also a possibility that you have a leak in part of your cooling system that caused the coolant level to drop. If this is the case, simply adding coolant won’t fix the issue since it’ll just leak right back out again. In this case, it’s probably best to talk to a professional about the issue to make sure that everything is properly patched or replaced.
While you’re learning more about your vehicle, why not learn about your car insurance options too? With
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MORE: Why your car heater is blowing cold air
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Jerry partners with more than 50 insurance companies, but our content is independently researched, written, and fact-checked by our team of editors and agents. We aren’t paid for reviews or other content.

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