Posted on 4/25/2025
If your car starts blowing fog through the air vents, it can be a little disturbing—especially if it looks like smoke at first glance. While it's often just condensation, fog coming from your vents isn’t something you should ignore if it keeps happening. Whether it's a one-time surprise or something you notice on every drive, understanding what causes this fog can help you avoid discomfort and rule out any serious issues. In most cases, this cloudy vapor is harmless. However, in others, it could point to a failing AC component, poor ventilation, or excess moisture in the system. Let’s break down what’s normal, what’s not, and what to do when your AC starts acting like a fog machine. How Moisture Turns Into Fog Inside Your Vents Your car’s AC system works by removing heat and moisture from the air. When that hot, humid air hits the cold evaporator coil inside your dash, the moisture condenses. Most of the time, this water d ... read more