Posted on 1/6/2025

Why Does My Car Heater Have a Bad Smell? When the temperature drops, your car heater becomes indispensable. However, a foul smell emanating from your heater can ruin your comfort and may even signal underlying issues with your vehicle. Let’s delve into the reasons why your car heater might smell bad and how Grand Garage, located at 1556 E Grand Ave, Escondido, CA, can help restore freshness and functionality to your car. Common Causes of a Bad Smell from Your Car Heater 1. Mold and Mildew in the HVAC System Mold and mildew are common culprits when it comes to unpleasant odors in your car’s heating system. The evaporator core often traps moisture, creating a perfect environment for bacteria and mold growth. Signs: Musty or damp smell when the heater is turned on. Odor decreases slightly after running the system for a while. Why It Happens: Moisture buildup inside the HVAC system fosters the growth of mold spores, which are circulated when air passes thr ... read more