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How to Fix Car Heater Blowing Cold Air?

How to Fix Car Heater Blowing Cold Air? Having a working car heater is essential during the cold months. As the weather cools, there are more problems with defective heaters. This is due to the fact that many drivers overlook the issue until it is too late to utilise the car heater. On a frigid winter day, no one wants their car heater to suddenly start pumping cold air instead of heat. The harsh Canadian winter months can be practically intolerable if your car heater fails.

The heating system in your car is intended to keep the cabin warm. Something is wrong if this does not occur. A car heater blowing chilly air could suggest a faulty heating unit.

There could be various reasons why a car heater isn’t working, but the two most prevalent are that air from the blower isn’t being directed at the heater core and coolant isn’t flowing through the heater core. Coolant and air are not flowing through their allocated pathways due to a variety of factors. A problem with the thermostat or heater core could possibly be the cause of the issue. This post will explain how to remedy the car heater blowing cold air problem. Continue reading!

Causes of a Car Heater Blowing Cold Air

  1. Low Coolant Level
  2. Malfunctioning Thermostat
  3. Broken Heater Flaps/Blend Door Actuators
  4. Air in the Cooling System
  5. Broken Heater Controls
  6. Clogged Heater Core

How to Fix Car Heater Blowing Cold Air?

One of the most prevalent car faults is a heater that blows chilly air. This can be caused by a variety of conditions, but it is usually easy to fix. Here are some tips for troubleshooting and repairing your car heater:

  1. If you’ve determined that a low coffee coolant level is the source of your issue, simply replenish it. If you recently filled your coolant, you should inspect it for leaks.
  2. To get your heater working again, you must instal a new thermostat. It is a straightforward and quick remedy.
  3. A blocked heater core route is frequently flushed, and a clogged heater core exterior is physically cleaned by removing any obstructed debris. A replacement heater core may be necessary for some circumstances.
  4. The blender door must be replaced. A jammed mix is usually addressed in conjunction with other, major repairs, such as water pump replacement.

How Much Does it Cost to Fix No Heat in the Car?

Many different reasons can cause your car’s heat to stop working. It might be low coolant fuel, which costs $10 to buy and refill, or a broken heater core, which costs $1,000 to $2,000 to fix.


This problem will emerge out of nowhere if you neglect your car and its maintenance. When winter approaches, you are unhappy and begin to question, “Why is my vehicle heater not blowing hot air, and how can I fix it if the car heater is not working and blowing cold air?” You can sometimes solve the car’s blowing cold air instead of heat problems on your own, but employing skilled people is the best alternative other times.

We hope you now have a thorough understanding of car heating system components, how they work to keep you warm inside your vehicle, and how to resolve car heater-blowing cold air difficulties.

Also Read: How to Fix Car Ac Blowing Hot Air?

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