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5 Possible Reasons Why Your Car Heater Isn’t Working


It’s that time of the year in Northern Virginia again when we all need to bundle up to leave our houses. When we head out the door to go turn on our cars, we expect our heater to heat up quickly. If you keep getting cold air instead of warm air, then you have a heater problem.

How Do Car Heaters Work?

The heating system brings the heat from the engine to keep your vehicle’s interior warm and comfortable in the winter. It comprises the heater core, a fan, coolant, and more. At our auto repair shop, we are committed to getting to the bottom of your heater problem. We are equipped to handle the most challenging heater repairs.  

 If your vehicle’s heating system is malfunctioning, it can be due to any of the following problems:

  1. Low Coolant - If your car is low on coolant fluid, your vehicle won’t get the proper heating. You can check the levels by popping the hood of your car open.
  2. Dirty Coolant - The condition of the coolant fluid also plays a role in the effectiveness of your vehicle’s heating. If it is contaminated, then it can get backed up and won’t circulate to the heater core.
  3. Malfunctioning Heater Core - A heater core is simply a small radiator. It is in charge of heating and defrosting. If there’s a clog or jam in the heater core, you won’t get warm air. 
  4. Failing Blower Motor - If the issue isn’t related to the coolant fluid or heater core, you should check on the blower fan next. A malfunctioning blower fan will result in no air blowing through the vents at all. This is most obvious to diagnose because you won’t feel or hear anything from the heating system.
  5. Broken Heater Controls - The heater controls can get jammed after many years of use. If this is the case, bring your vehicle to our shop for a replacement. 

Let us keep you and your loved ones warm, comfortable, and safe this season. If you are dealing with a heater issue with your vehicle, please bring your car to one of our convenient shop locations. We look forward to seeing you at Chahel Automotive.

2084 Chain Bridge Rd Vienna, VA 22182 (703) 356-3367
102 Maple Ave W Vienna, VA 22180 (703) 938-4733
545 Maple Ave W Vienna, VA 22180 (703) 255-3000
2961 Hunter Mill Rd Oakton, VA 22124 (703) 938-7732
12080 Glade Dr Reston, VA 20191 (703) 860-0414