FAQ'S - Why Is There No Hot Air In My Vehicle?

Why Is There No Hot Air In My Vehicle?

Your car’s heater is supposed to keep you warm while driving around in cold weather – a necessity during the winter in Minnesota. If your car is not producing hot air when the heater is turned on, there could be several reasons for this issue. Here are some common causes:

  • The heater core, a small radiator that provides heat for the interior of your car, can become clogged or corroded over time, reducing its ability to transfer heat. Flushing the heater core may help, but in some cases, it may need to be replaced by a professional mechanic.
  • Insufficient coolant in the engine can prevent the heater core from getting hot enough to produce warm air. Check the coolant level in the radiator and reservoir. If it’s low, top it up with the appropriate coolant mixture to get your heater working again.
  • The thermostat, which regulates the flow of coolant through the engine, could be stuck open. If this happens, the engine may not reach the proper operating temperature, resulting in cold air blowing from the heater. Consider replacing the thermostat in your vehicle if it’s malfunctioning.
  • If the blower motor or its resistor is faulty, it may not blow air through the heater core effectively. Check for any issues with the blower motor or its resistor, and replace them if necessary.
  • Check for leaks in the coolant system, including hoses, connections, and the radiator. A leak can lead to a loss of coolant, negatively affecting the heater’s performance.


If you can’t seem to get your car’s heater working, contact Arvu Auto today to schedule heater repair services in the West Minneapolis metro!

We’re open from Monday through Friday, 7:30AM to 5PM. If you’re not sure of a service we offer, give us a call at (320) 286-5925 or send us a text message at (320) 247-6296.

For our location & directions, click here.

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  • Hours: Monday – Friday, 8:00AM to 5PM
  • Address: 14177 US-12 SW, Cokato, MN 55321